Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1 | #include "builtin.h" |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 2 | #include "perf.h" |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 3 | |
| 4 | #include "util/util.h" |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 5 | #include "util/evlist.h" |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 6 | #include "util/cache.h" |
Arnaldo Carvalho de Melo | e3f4260 | 2011-11-16 17:02:54 -0200 | [diff] [blame] | 7 | #include "util/evsel.h" |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 8 | #include "util/symbol.h" |
| 9 | #include "util/thread.h" |
| 10 | #include "util/header.h" |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 11 | #include "util/session.h" |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 12 | #include "util/tool.h" |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 13 | |
| 14 | #include "util/parse-options.h" |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 15 | #include "util/trace-event.h" |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 16 | |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 17 | #include "util/debug.h" |
| 18 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 19 | #include <sys/prctl.h> |
Markus Trippelsdorf | 7b78f13 | 2012-04-04 10:45:27 +0200 | [diff] [blame] | 20 | #include <sys/resource.h> |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 21 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 22 | #include <semaphore.h> |
| 23 | #include <pthread.h> |
| 24 | #include <math.h> |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 25 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 26 | #define PR_SET_NAME 15 /* Set process name */ |
| 27 | #define MAX_CPUS 4096 |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 28 | #define COMM_LEN 20 |
| 29 | #define SYM_LEN 129 |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 30 | #define MAX_PID 65536 |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 31 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 32 | struct sched_atom; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 33 | |
| 34 | struct task_desc { |
| 35 | unsigned long nr; |
| 36 | unsigned long pid; |
| 37 | char comm[COMM_LEN]; |
| 38 | |
| 39 | unsigned long nr_events; |
| 40 | unsigned long curr_event; |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 41 | struct sched_atom **atoms; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 42 | |
| 43 | pthread_t thread; |
| 44 | sem_t sleep_sem; |
| 45 | |
| 46 | sem_t ready_for_work; |
| 47 | sem_t work_done_sem; |
| 48 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 49 | u64 cpu_usage; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 50 | }; |
| 51 | |
| 52 | enum sched_event_type { |
| 53 | SCHED_EVENT_RUN, |
| 54 | SCHED_EVENT_SLEEP, |
| 55 | SCHED_EVENT_WAKEUP, |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 56 | SCHED_EVENT_MIGRATION, |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 57 | }; |
| 58 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 59 | struct sched_atom { |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 60 | enum sched_event_type type; |
Arnaldo Carvalho de Melo | eed05fe | 2010-04-05 12:53:45 -0300 | [diff] [blame] | 61 | int specific_wait; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 62 | u64 timestamp; |
| 63 | u64 duration; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 64 | unsigned long nr; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 65 | sem_t *wait_sem; |
| 66 | struct task_desc *wakee; |
| 67 | }; |
| 68 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 69 | #define TASK_STATE_TO_CHAR_STR "RSDTtZX" |
| 70 | |
| 71 | enum thread_state { |
| 72 | THREAD_SLEEPING = 0, |
| 73 | THREAD_WAIT_CPU, |
| 74 | THREAD_SCHED_IN, |
| 75 | THREAD_IGNORE |
| 76 | }; |
| 77 | |
| 78 | struct work_atom { |
| 79 | struct list_head list; |
| 80 | enum thread_state state; |
Frederic Weisbecker | aa1ab9d | 2009-09-14 03:01:12 +0200 | [diff] [blame] | 81 | u64 sched_out_time; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 82 | u64 wake_up_time; |
| 83 | u64 sched_in_time; |
| 84 | u64 runtime; |
| 85 | }; |
| 86 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 87 | struct work_atoms { |
| 88 | struct list_head work_list; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 89 | struct thread *thread; |
| 90 | struct rb_node node; |
| 91 | u64 max_lat; |
Frederic Weisbecker | 3786310a | 2009-12-09 21:40:08 +0100 | [diff] [blame] | 92 | u64 max_lat_at; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 93 | u64 total_lat; |
| 94 | u64 nb_atoms; |
| 95 | u64 total_runtime; |
| 96 | }; |
| 97 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 98 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 99 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 100 | struct perf_sched; |
| 101 | |
| 102 | struct trace_sched_handler { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 103 | int (*switch_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
| 104 | struct perf_sample *sample, struct machine *machine); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 105 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 106 | int (*runtime_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
| 107 | struct perf_sample *sample, struct machine *machine); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 108 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 109 | int (*wakeup_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
| 110 | struct perf_sample *sample, struct machine *machine); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 111 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 112 | int (*fork_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
| 113 | struct perf_sample *sample); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 114 | |
| 115 | int (*migrate_task_event)(struct perf_sched *sched, |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 116 | struct perf_evsel *evsel, |
| 117 | struct perf_sample *sample, |
| 118 | struct machine *machine); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 119 | }; |
| 120 | |
| 121 | struct perf_sched { |
| 122 | struct perf_tool tool; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 123 | const char *sort_order; |
| 124 | unsigned long nr_tasks; |
| 125 | struct task_desc *pid_to_task[MAX_PID]; |
| 126 | struct task_desc **tasks; |
| 127 | const struct trace_sched_handler *tp_handler; |
| 128 | pthread_mutex_t start_work_mutex; |
| 129 | pthread_mutex_t work_done_wait_mutex; |
| 130 | int profile_cpu; |
| 131 | /* |
| 132 | * Track the current task - that way we can know whether there's any |
| 133 | * weird events, such as a task being switched away that is not current. |
| 134 | */ |
| 135 | int max_cpu; |
| 136 | u32 curr_pid[MAX_CPUS]; |
| 137 | struct thread *curr_thread[MAX_CPUS]; |
| 138 | char next_shortname1; |
| 139 | char next_shortname2; |
| 140 | unsigned int replay_repeat; |
| 141 | unsigned long nr_run_events; |
| 142 | unsigned long nr_sleep_events; |
| 143 | unsigned long nr_wakeup_events; |
| 144 | unsigned long nr_sleep_corrections; |
| 145 | unsigned long nr_run_events_optimized; |
| 146 | unsigned long targetless_wakeups; |
| 147 | unsigned long multitarget_wakeups; |
| 148 | unsigned long nr_runs; |
| 149 | unsigned long nr_timestamps; |
| 150 | unsigned long nr_unordered_timestamps; |
| 151 | unsigned long nr_state_machine_bugs; |
| 152 | unsigned long nr_context_switch_bugs; |
| 153 | unsigned long nr_events; |
| 154 | unsigned long nr_lost_chunks; |
| 155 | unsigned long nr_lost_events; |
| 156 | u64 run_measurement_overhead; |
| 157 | u64 sleep_measurement_overhead; |
| 158 | u64 start_time; |
| 159 | u64 cpu_usage; |
| 160 | u64 runavg_cpu_usage; |
| 161 | u64 parent_cpu_usage; |
| 162 | u64 runavg_parent_cpu_usage; |
| 163 | u64 sum_runtime; |
| 164 | u64 sum_fluct; |
| 165 | u64 run_avg; |
| 166 | u64 all_runtime; |
| 167 | u64 all_count; |
| 168 | u64 cpu_last_switched[MAX_CPUS]; |
| 169 | struct rb_root atom_root, sorted_atom_root; |
| 170 | struct list_head sort_list, cmp_pid; |
| 171 | }; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 172 | |
| 173 | static u64 get_nsecs(void) |
| 174 | { |
| 175 | struct timespec ts; |
| 176 | |
| 177 | clock_gettime(CLOCK_MONOTONIC, &ts); |
| 178 | |
| 179 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; |
| 180 | } |
| 181 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 182 | static void burn_nsecs(struct perf_sched *sched, u64 nsecs) |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 183 | { |
| 184 | u64 T0 = get_nsecs(), T1; |
| 185 | |
| 186 | do { |
| 187 | T1 = get_nsecs(); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 188 | } while (T1 + sched->run_measurement_overhead < T0 + nsecs); |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | static void sleep_nsecs(u64 nsecs) |
| 192 | { |
| 193 | struct timespec ts; |
| 194 | |
| 195 | ts.tv_nsec = nsecs % 999999999; |
| 196 | ts.tv_sec = nsecs / 999999999; |
| 197 | |
| 198 | nanosleep(&ts, NULL); |
| 199 | } |
| 200 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 201 | static void calibrate_run_measurement_overhead(struct perf_sched *sched) |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 202 | { |
| 203 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
| 204 | int i; |
| 205 | |
| 206 | for (i = 0; i < 10; i++) { |
| 207 | T0 = get_nsecs(); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 208 | burn_nsecs(sched, 0); |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 209 | T1 = get_nsecs(); |
| 210 | delta = T1-T0; |
| 211 | min_delta = min(min_delta, delta); |
| 212 | } |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 213 | sched->run_measurement_overhead = min_delta; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 214 | |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 215 | printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 216 | } |
| 217 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 218 | static void calibrate_sleep_measurement_overhead(struct perf_sched *sched) |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 219 | { |
| 220 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
| 221 | int i; |
| 222 | |
| 223 | for (i = 0; i < 10; i++) { |
| 224 | T0 = get_nsecs(); |
| 225 | sleep_nsecs(10000); |
| 226 | T1 = get_nsecs(); |
| 227 | delta = T1-T0; |
| 228 | min_delta = min(min_delta, delta); |
| 229 | } |
| 230 | min_delta -= 10000; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 231 | sched->sleep_measurement_overhead = min_delta; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 232 | |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 233 | printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 234 | } |
| 235 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 236 | static struct sched_atom * |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 237 | get_new_event(struct task_desc *task, u64 timestamp) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 238 | { |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 239 | struct sched_atom *event = zalloc(sizeof(*event)); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 240 | unsigned long idx = task->nr_events; |
| 241 | size_t size; |
| 242 | |
| 243 | event->timestamp = timestamp; |
| 244 | event->nr = idx; |
| 245 | |
| 246 | task->nr_events++; |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 247 | size = sizeof(struct sched_atom *) * task->nr_events; |
| 248 | task->atoms = realloc(task->atoms, size); |
| 249 | BUG_ON(!task->atoms); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 250 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 251 | task->atoms[idx] = event; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 252 | |
| 253 | return event; |
| 254 | } |
| 255 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 256 | static struct sched_atom *last_event(struct task_desc *task) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 257 | { |
| 258 | if (!task->nr_events) |
| 259 | return NULL; |
| 260 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 261 | return task->atoms[task->nr_events - 1]; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 262 | } |
| 263 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 264 | static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task, |
| 265 | u64 timestamp, u64 duration) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 266 | { |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 267 | struct sched_atom *event, *curr_event = last_event(task); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 268 | |
| 269 | /* |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 270 | * optimize an existing RUN event by merging this one |
| 271 | * to it: |
| 272 | */ |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 273 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 274 | sched->nr_run_events_optimized++; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 275 | curr_event->duration += duration; |
| 276 | return; |
| 277 | } |
| 278 | |
| 279 | event = get_new_event(task, timestamp); |
| 280 | |
| 281 | event->type = SCHED_EVENT_RUN; |
| 282 | event->duration = duration; |
| 283 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 284 | sched->nr_run_events++; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 285 | } |
| 286 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 287 | static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task, |
| 288 | u64 timestamp, struct task_desc *wakee) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 289 | { |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 290 | struct sched_atom *event, *wakee_event; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 291 | |
| 292 | event = get_new_event(task, timestamp); |
| 293 | event->type = SCHED_EVENT_WAKEUP; |
| 294 | event->wakee = wakee; |
| 295 | |
| 296 | wakee_event = last_event(wakee); |
| 297 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 298 | sched->targetless_wakeups++; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 299 | return; |
| 300 | } |
| 301 | if (wakee_event->wait_sem) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 302 | sched->multitarget_wakeups++; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 303 | return; |
| 304 | } |
| 305 | |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 306 | wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 307 | sem_init(wakee_event->wait_sem, 0, 0); |
| 308 | wakee_event->specific_wait = 1; |
| 309 | event->wait_sem = wakee_event->wait_sem; |
| 310 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 311 | sched->nr_wakeup_events++; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 312 | } |
| 313 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 314 | static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task, |
| 315 | u64 timestamp, u64 task_state __maybe_unused) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 316 | { |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 317 | struct sched_atom *event = get_new_event(task, timestamp); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 318 | |
| 319 | event->type = SCHED_EVENT_SLEEP; |
| 320 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 321 | sched->nr_sleep_events++; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 322 | } |
| 323 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 324 | static struct task_desc *register_pid(struct perf_sched *sched, |
| 325 | unsigned long pid, const char *comm) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 326 | { |
| 327 | struct task_desc *task; |
| 328 | |
| 329 | BUG_ON(pid >= MAX_PID); |
| 330 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 331 | task = sched->pid_to_task[pid]; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 332 | |
| 333 | if (task) |
| 334 | return task; |
| 335 | |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 336 | task = zalloc(sizeof(*task)); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 337 | task->pid = pid; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 338 | task->nr = sched->nr_tasks; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 339 | strcpy(task->comm, comm); |
| 340 | /* |
| 341 | * every task starts in sleeping state - this gets ignored |
| 342 | * if there's no wakeup pointing to this sleep state: |
| 343 | */ |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 344 | add_sched_event_sleep(sched, task, 0, 0); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 345 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 346 | sched->pid_to_task[pid] = task; |
| 347 | sched->nr_tasks++; |
| 348 | sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_task *)); |
| 349 | BUG_ON(!sched->tasks); |
| 350 | sched->tasks[task->nr] = task; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 351 | |
Ingo Molnar | ad236fd | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 352 | if (verbose) |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 353 | printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 354 | |
| 355 | return task; |
| 356 | } |
| 357 | |
| 358 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 359 | static void print_task_traces(struct perf_sched *sched) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 360 | { |
| 361 | struct task_desc *task; |
| 362 | unsigned long i; |
| 363 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 364 | for (i = 0; i < sched->nr_tasks; i++) { |
| 365 | task = sched->tasks[i]; |
Ingo Molnar | ad236fd | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 366 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 367 | task->nr, task->comm, task->pid, task->nr_events); |
| 368 | } |
| 369 | } |
| 370 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 371 | static void add_cross_task_wakeups(struct perf_sched *sched) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 372 | { |
| 373 | struct task_desc *task1, *task2; |
| 374 | unsigned long i, j; |
| 375 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 376 | for (i = 0; i < sched->nr_tasks; i++) { |
| 377 | task1 = sched->tasks[i]; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 378 | j = i + 1; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 379 | if (j == sched->nr_tasks) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 380 | j = 0; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 381 | task2 = sched->tasks[j]; |
| 382 | add_sched_event_wakeup(sched, task1, 0, task2); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 383 | } |
| 384 | } |
| 385 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 386 | static void perf_sched__process_event(struct perf_sched *sched, |
| 387 | struct sched_atom *atom) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 388 | { |
| 389 | int ret = 0; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 390 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 391 | switch (atom->type) { |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 392 | case SCHED_EVENT_RUN: |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 393 | burn_nsecs(sched, atom->duration); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 394 | break; |
| 395 | case SCHED_EVENT_SLEEP: |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 396 | if (atom->wait_sem) |
| 397 | ret = sem_wait(atom->wait_sem); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 398 | BUG_ON(ret); |
| 399 | break; |
| 400 | case SCHED_EVENT_WAKEUP: |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 401 | if (atom->wait_sem) |
| 402 | ret = sem_post(atom->wait_sem); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 403 | BUG_ON(ret); |
| 404 | break; |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 405 | case SCHED_EVENT_MIGRATION: |
| 406 | break; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 407 | default: |
| 408 | BUG_ON(1); |
| 409 | } |
| 410 | } |
| 411 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 412 | static u64 get_cpu_usage_nsec_parent(void) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 413 | { |
| 414 | struct rusage ru; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 415 | u64 sum; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 416 | int err; |
| 417 | |
| 418 | err = getrusage(RUSAGE_SELF, &ru); |
| 419 | BUG_ON(err); |
| 420 | |
| 421 | sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3; |
| 422 | sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3; |
| 423 | |
| 424 | return sum; |
| 425 | } |
| 426 | |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 427 | static int self_open_counters(void) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 428 | { |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 429 | struct perf_event_attr attr; |
| 430 | int fd; |
| 431 | |
| 432 | memset(&attr, 0, sizeof(attr)); |
| 433 | |
| 434 | attr.type = PERF_TYPE_SOFTWARE; |
| 435 | attr.config = PERF_COUNT_SW_TASK_CLOCK; |
| 436 | |
| 437 | fd = sys_perf_event_open(&attr, 0, -1, -1, 0); |
| 438 | |
| 439 | if (fd < 0) |
Namhyung Kim | 60b7d14 | 2012-09-12 11:11:06 +0900 | [diff] [blame] | 440 | pr_err("Error: sys_perf_event_open() syscall returned " |
| 441 | "with %d (%s)\n", fd, strerror(errno)); |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 442 | return fd; |
| 443 | } |
| 444 | |
| 445 | static u64 get_cpu_usage_nsec_self(int fd) |
| 446 | { |
| 447 | u64 runtime; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 448 | int ret; |
| 449 | |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 450 | ret = read(fd, &runtime, sizeof(runtime)); |
| 451 | BUG_ON(ret != sizeof(runtime)); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 452 | |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 453 | return runtime; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 454 | } |
| 455 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 456 | struct sched_thread_parms { |
| 457 | struct task_desc *task; |
| 458 | struct perf_sched *sched; |
| 459 | }; |
| 460 | |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 461 | static void *thread_func(void *ctx) |
| 462 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 463 | struct sched_thread_parms *parms = ctx; |
| 464 | struct task_desc *this_task = parms->task; |
| 465 | struct perf_sched *sched = parms->sched; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 466 | u64 cpu_usage_0, cpu_usage_1; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 467 | unsigned long i, ret; |
| 468 | char comm2[22]; |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 469 | int fd; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 470 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 471 | free(parms); |
| 472 | |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 473 | sprintf(comm2, ":%s", this_task->comm); |
| 474 | prctl(PR_SET_NAME, comm2); |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 475 | fd = self_open_counters(); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 476 | if (fd < 0) |
| 477 | return NULL; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 478 | again: |
| 479 | ret = sem_post(&this_task->ready_for_work); |
| 480 | BUG_ON(ret); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 481 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 482 | BUG_ON(ret); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 483 | ret = pthread_mutex_unlock(&sched->start_work_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 484 | BUG_ON(ret); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 485 | |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 486 | cpu_usage_0 = get_cpu_usage_nsec_self(fd); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 487 | |
| 488 | for (i = 0; i < this_task->nr_events; i++) { |
| 489 | this_task->curr_event = i; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 490 | perf_sched__process_event(sched, this_task->atoms[i]); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 491 | } |
| 492 | |
Xiao Guangrong | c0c9e72 | 2009-12-09 17:51:30 +0800 | [diff] [blame] | 493 | cpu_usage_1 = get_cpu_usage_nsec_self(fd); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 494 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 495 | ret = sem_post(&this_task->work_done_sem); |
| 496 | BUG_ON(ret); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 497 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 498 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 499 | BUG_ON(ret); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 500 | ret = pthread_mutex_unlock(&sched->work_done_wait_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 501 | BUG_ON(ret); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 502 | |
| 503 | goto again; |
| 504 | } |
| 505 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 506 | static void create_tasks(struct perf_sched *sched) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 507 | { |
| 508 | struct task_desc *task; |
| 509 | pthread_attr_t attr; |
| 510 | unsigned long i; |
| 511 | int err; |
| 512 | |
| 513 | err = pthread_attr_init(&attr); |
| 514 | BUG_ON(err); |
Jiri Pirko | 12f7e03 | 2011-01-10 14:14:23 -0200 | [diff] [blame] | 515 | err = pthread_attr_setstacksize(&attr, |
| 516 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 517 | BUG_ON(err); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 518 | err = pthread_mutex_lock(&sched->start_work_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 519 | BUG_ON(err); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 520 | err = pthread_mutex_lock(&sched->work_done_wait_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 521 | BUG_ON(err); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 522 | for (i = 0; i < sched->nr_tasks; i++) { |
| 523 | struct sched_thread_parms *parms = malloc(sizeof(*parms)); |
| 524 | BUG_ON(parms == NULL); |
| 525 | parms->task = task = sched->tasks[i]; |
| 526 | parms->sched = sched; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 527 | sem_init(&task->sleep_sem, 0, 0); |
| 528 | sem_init(&task->ready_for_work, 0, 0); |
| 529 | sem_init(&task->work_done_sem, 0, 0); |
| 530 | task->curr_event = 0; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 531 | err = pthread_create(&task->thread, &attr, thread_func, parms); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 532 | BUG_ON(err); |
| 533 | } |
| 534 | } |
| 535 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 536 | static void wait_for_tasks(struct perf_sched *sched) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 537 | { |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 538 | u64 cpu_usage_0, cpu_usage_1; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 539 | struct task_desc *task; |
| 540 | unsigned long i, ret; |
| 541 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 542 | sched->start_time = get_nsecs(); |
| 543 | sched->cpu_usage = 0; |
| 544 | pthread_mutex_unlock(&sched->work_done_wait_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 545 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 546 | for (i = 0; i < sched->nr_tasks; i++) { |
| 547 | task = sched->tasks[i]; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 548 | ret = sem_wait(&task->ready_for_work); |
| 549 | BUG_ON(ret); |
| 550 | sem_init(&task->ready_for_work, 0, 0); |
| 551 | } |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 552 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 553 | BUG_ON(ret); |
| 554 | |
| 555 | cpu_usage_0 = get_cpu_usage_nsec_parent(); |
| 556 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 557 | pthread_mutex_unlock(&sched->start_work_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 558 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 559 | for (i = 0; i < sched->nr_tasks; i++) { |
| 560 | task = sched->tasks[i]; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 561 | ret = sem_wait(&task->work_done_sem); |
| 562 | BUG_ON(ret); |
| 563 | sem_init(&task->work_done_sem, 0, 0); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 564 | sched->cpu_usage += task->cpu_usage; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 565 | task->cpu_usage = 0; |
| 566 | } |
| 567 | |
| 568 | cpu_usage_1 = get_cpu_usage_nsec_parent(); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 569 | if (!sched->runavg_cpu_usage) |
| 570 | sched->runavg_cpu_usage = sched->cpu_usage; |
| 571 | sched->runavg_cpu_usage = (sched->runavg_cpu_usage * 9 + sched->cpu_usage) / 10; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 572 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 573 | sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0; |
| 574 | if (!sched->runavg_parent_cpu_usage) |
| 575 | sched->runavg_parent_cpu_usage = sched->parent_cpu_usage; |
| 576 | sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * 9 + |
| 577 | sched->parent_cpu_usage)/10; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 578 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 579 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 580 | BUG_ON(ret); |
| 581 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 582 | for (i = 0; i < sched->nr_tasks; i++) { |
| 583 | task = sched->tasks[i]; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 584 | sem_init(&task->sleep_sem, 0, 0); |
| 585 | task->curr_event = 0; |
| 586 | } |
| 587 | } |
| 588 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 589 | static void run_one_test(struct perf_sched *sched) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 590 | { |
Kyle McMartin | fb7d0b3 | 2011-01-24 11:13:04 -0500 | [diff] [blame] | 591 | u64 T0, T1, delta, avg_delta, fluct; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 592 | |
| 593 | T0 = get_nsecs(); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 594 | wait_for_tasks(sched); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 595 | T1 = get_nsecs(); |
| 596 | |
| 597 | delta = T1 - T0; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 598 | sched->sum_runtime += delta; |
| 599 | sched->nr_runs++; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 600 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 601 | avg_delta = sched->sum_runtime / sched->nr_runs; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 602 | if (delta < avg_delta) |
| 603 | fluct = avg_delta - delta; |
| 604 | else |
| 605 | fluct = delta - avg_delta; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 606 | sched->sum_fluct += fluct; |
| 607 | if (!sched->run_avg) |
| 608 | sched->run_avg = delta; |
| 609 | sched->run_avg = (sched->run_avg * 9 + delta) / 10; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 610 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 611 | printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / 1000000.0); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 612 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 613 | printf("ravg: %0.2f, ", (double)sched->run_avg / 1e6); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 614 | |
Ingo Molnar | ad236fd | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 615 | printf("cpu: %0.2f / %0.2f", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 616 | (double)sched->cpu_usage / 1e6, (double)sched->runavg_cpu_usage / 1e6); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 617 | |
| 618 | #if 0 |
| 619 | /* |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 620 | * rusage statistics done by the parent, these are less |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 621 | * accurate than the sched->sum_exec_runtime based statistics: |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 622 | */ |
Ingo Molnar | ad236fd | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 623 | printf(" [%0.2f / %0.2f]", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 624 | (double)sched->parent_cpu_usage/1e6, |
| 625 | (double)sched->runavg_parent_cpu_usage/1e6); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 626 | #endif |
| 627 | |
Ingo Molnar | ad236fd | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 628 | printf("\n"); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 629 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 630 | if (sched->nr_sleep_corrections) |
| 631 | printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections); |
| 632 | sched->nr_sleep_corrections = 0; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 633 | } |
| 634 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 635 | static void test_calibrations(struct perf_sched *sched) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 636 | { |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 637 | u64 T0, T1; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 638 | |
| 639 | T0 = get_nsecs(); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 640 | burn_nsecs(sched, 1e6); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 641 | T1 = get_nsecs(); |
| 642 | |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 643 | printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 644 | |
| 645 | T0 = get_nsecs(); |
| 646 | sleep_nsecs(1e6); |
| 647 | T1 = get_nsecs(); |
| 648 | |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 649 | printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 650 | } |
| 651 | |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 652 | static int |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 653 | replay_wakeup_event(struct perf_sched *sched, |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 654 | struct perf_evsel *evsel, struct perf_sample *sample, |
| 655 | struct machine *machine __maybe_unused) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 656 | { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 657 | const char *comm = perf_evsel__strval(evsel, sample, "comm"); |
| 658 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 659 | struct task_desc *waker, *wakee; |
| 660 | |
| 661 | if (verbose) { |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 662 | printf("sched_wakeup event %p\n", evsel); |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 663 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 664 | printf(" ... pid %d woke up %s/%d\n", sample->tid, comm, pid); |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 665 | } |
| 666 | |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 667 | waker = register_pid(sched, sample->tid, "<unknown>"); |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 668 | wakee = register_pid(sched, pid, comm); |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 669 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 670 | add_sched_event_wakeup(sched, waker, sample->time, wakee); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 671 | return 0; |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 672 | } |
| 673 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 674 | static int replay_switch_event(struct perf_sched *sched, |
| 675 | struct perf_evsel *evsel, |
| 676 | struct perf_sample *sample, |
| 677 | struct machine *machine __maybe_unused) |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 678 | { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 679 | const char *prev_comm = perf_evsel__strval(evsel, sample, "prev_comm"), |
| 680 | *next_comm = perf_evsel__strval(evsel, sample, "next_comm"); |
| 681 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
| 682 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); |
| 683 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 684 | struct task_desc *prev, __maybe_unused *next; |
Arnaldo Carvalho de Melo | 7f7f8d0 | 2012-08-07 11:33:42 -0300 | [diff] [blame] | 685 | u64 timestamp0, timestamp = sample->time; |
| 686 | int cpu = sample->cpu; |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 687 | s64 delta; |
| 688 | |
Ingo Molnar | ad236fd | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 689 | if (verbose) |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 690 | printf("sched_switch event %p\n", evsel); |
Ingo Molnar | ad236fd | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 691 | |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 692 | if (cpu >= MAX_CPUS || cpu < 0) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 693 | return 0; |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 694 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 695 | timestamp0 = sched->cpu_last_switched[cpu]; |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 696 | if (timestamp0) |
| 697 | delta = timestamp - timestamp0; |
| 698 | else |
| 699 | delta = 0; |
| 700 | |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 701 | if (delta < 0) { |
Namhyung Kim | 60b7d14 | 2012-09-12 11:11:06 +0900 | [diff] [blame] | 702 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 703 | return -1; |
| 704 | } |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 705 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 706 | pr_debug(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", |
| 707 | prev_comm, prev_pid, next_comm, next_pid, delta); |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 708 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 709 | prev = register_pid(sched, prev_pid, prev_comm); |
| 710 | next = register_pid(sched, next_pid, next_comm); |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 711 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 712 | sched->cpu_last_switched[cpu] = timestamp; |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 713 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 714 | add_sched_event_run(sched, prev, timestamp, delta); |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 715 | add_sched_event_sleep(sched, prev, timestamp, prev_state); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 716 | |
| 717 | return 0; |
Ingo Molnar | fbf9482 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 718 | } |
| 719 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 720 | static int replay_fork_event(struct perf_sched *sched, struct perf_evsel *evsel, |
| 721 | struct perf_sample *sample) |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 722 | { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 723 | const char *parent_comm = perf_evsel__strval(evsel, sample, "parent_comm"), |
| 724 | *child_comm = perf_evsel__strval(evsel, sample, "child_comm"); |
| 725 | const u32 parent_pid = perf_evsel__intval(evsel, sample, "parent_pid"), |
| 726 | child_pid = perf_evsel__intval(evsel, sample, "child_pid"); |
| 727 | |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 728 | if (verbose) { |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 729 | printf("sched_fork event %p\n", evsel); |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 730 | printf("... parent: %s/%d\n", parent_comm, parent_pid); |
| 731 | printf("... child: %s/%d\n", child_comm, child_pid); |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 732 | } |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 733 | |
| 734 | register_pid(sched, parent_pid, parent_comm); |
| 735 | register_pid(sched, child_pid, child_comm); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 736 | return 0; |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 737 | } |
| 738 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 739 | struct sort_dimension { |
| 740 | const char *name; |
Ingo Molnar | b5fae12 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 741 | sort_fn_t cmp; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 742 | struct list_head list; |
| 743 | }; |
| 744 | |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 745 | static int |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 746 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 747 | { |
| 748 | struct sort_dimension *sort; |
| 749 | int ret = 0; |
| 750 | |
Ingo Molnar | b5fae12 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 751 | BUG_ON(list_empty(list)); |
| 752 | |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 753 | list_for_each_entry(sort, list, list) { |
| 754 | ret = sort->cmp(l, r); |
| 755 | if (ret) |
| 756 | return ret; |
| 757 | } |
| 758 | |
| 759 | return ret; |
| 760 | } |
| 761 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 762 | static struct work_atoms * |
Ingo Molnar | b5fae12 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 763 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
| 764 | struct list_head *sort_list) |
| 765 | { |
| 766 | struct rb_node *node = root->rb_node; |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 767 | struct work_atoms key = { .thread = thread }; |
Ingo Molnar | b5fae12 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 768 | |
| 769 | while (node) { |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 770 | struct work_atoms *atoms; |
Ingo Molnar | b5fae12 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 771 | int cmp; |
| 772 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 773 | atoms = container_of(node, struct work_atoms, node); |
Ingo Molnar | b5fae12 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 774 | |
| 775 | cmp = thread_lat_cmp(sort_list, &key, atoms); |
| 776 | if (cmp > 0) |
| 777 | node = node->rb_left; |
| 778 | else if (cmp < 0) |
| 779 | node = node->rb_right; |
| 780 | else { |
| 781 | BUG_ON(thread != atoms->thread); |
| 782 | return atoms; |
| 783 | } |
| 784 | } |
| 785 | return NULL; |
| 786 | } |
| 787 | |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 788 | static void |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 789 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 790 | struct list_head *sort_list) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 791 | { |
| 792 | struct rb_node **new = &(root->rb_node), *parent = NULL; |
| 793 | |
| 794 | while (*new) { |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 795 | struct work_atoms *this; |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 796 | int cmp; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 797 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 798 | this = container_of(*new, struct work_atoms, node); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 799 | parent = *new; |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 800 | |
| 801 | cmp = thread_lat_cmp(sort_list, data, this); |
| 802 | |
| 803 | if (cmp > 0) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 804 | new = &((*new)->rb_left); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 805 | else |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 806 | new = &((*new)->rb_right); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | rb_link_node(&data->node, parent, new); |
| 810 | rb_insert_color(&data->node, root); |
| 811 | } |
| 812 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 813 | static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 814 | { |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 815 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 816 | if (!atoms) { |
| 817 | pr_err("No memory at %s\n", __func__); |
| 818 | return -1; |
| 819 | } |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 820 | |
Frederic Weisbecker | 1756220 | 2009-09-12 23:11:32 +0200 | [diff] [blame] | 821 | atoms->thread = thread; |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 822 | INIT_LIST_HEAD(&atoms->work_list); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 823 | __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 824 | return 0; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 825 | } |
| 826 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 827 | static int latency_fork_event(struct perf_sched *sched __maybe_unused, |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 828 | struct perf_evsel *evsel __maybe_unused, |
| 829 | struct perf_sample *sample __maybe_unused) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 830 | { |
| 831 | /* should insert the newcomer */ |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 832 | return 0; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 833 | } |
| 834 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 835 | static char sched_out_state(u64 prev_state) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 836 | { |
| 837 | const char *str = TASK_STATE_TO_CHAR_STR; |
| 838 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 839 | return str[prev_state]; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 840 | } |
| 841 | |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 842 | static int |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 843 | add_sched_out_event(struct work_atoms *atoms, |
| 844 | char run_state, |
| 845 | u64 timestamp) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 846 | { |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 847 | struct work_atom *atom = zalloc(sizeof(*atom)); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 848 | if (!atom) { |
| 849 | pr_err("Non memory at %s", __func__); |
| 850 | return -1; |
| 851 | } |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 852 | |
Frederic Weisbecker | aa1ab9d | 2009-09-14 03:01:12 +0200 | [diff] [blame] | 853 | atom->sched_out_time = timestamp; |
| 854 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 855 | if (run_state == 'R') { |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 856 | atom->state = THREAD_WAIT_CPU; |
Frederic Weisbecker | aa1ab9d | 2009-09-14 03:01:12 +0200 | [diff] [blame] | 857 | atom->wake_up_time = atom->sched_out_time; |
Frederic Weisbecker | c6ced61 | 2009-09-13 00:46:19 +0200 | [diff] [blame] | 858 | } |
| 859 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 860 | list_add_tail(&atom->list, &atoms->work_list); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 861 | return 0; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 862 | } |
| 863 | |
| 864 | static void |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 865 | add_runtime_event(struct work_atoms *atoms, u64 delta, |
| 866 | u64 timestamp __maybe_unused) |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 867 | { |
| 868 | struct work_atom *atom; |
| 869 | |
| 870 | BUG_ON(list_empty(&atoms->work_list)); |
| 871 | |
| 872 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
| 873 | |
| 874 | atom->runtime += delta; |
| 875 | atoms->total_runtime += delta; |
| 876 | } |
| 877 | |
| 878 | static void |
| 879 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 880 | { |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 881 | struct work_atom *atom; |
Frederic Weisbecker | 6668567 | 2009-09-13 01:56:25 +0200 | [diff] [blame] | 882 | u64 delta; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 883 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 884 | if (list_empty(&atoms->work_list)) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 885 | return; |
| 886 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 887 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 888 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 889 | if (atom->state != THREAD_WAIT_CPU) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 890 | return; |
| 891 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 892 | if (timestamp < atom->wake_up_time) { |
| 893 | atom->state = THREAD_IGNORE; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 894 | return; |
| 895 | } |
| 896 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 897 | atom->state = THREAD_SCHED_IN; |
| 898 | atom->sched_in_time = timestamp; |
Frederic Weisbecker | 6668567 | 2009-09-13 01:56:25 +0200 | [diff] [blame] | 899 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 900 | delta = atom->sched_in_time - atom->wake_up_time; |
Frederic Weisbecker | 6668567 | 2009-09-13 01:56:25 +0200 | [diff] [blame] | 901 | atoms->total_lat += delta; |
Frederic Weisbecker | 3786310a | 2009-12-09 21:40:08 +0100 | [diff] [blame] | 902 | if (delta > atoms->max_lat) { |
Frederic Weisbecker | 6668567 | 2009-09-13 01:56:25 +0200 | [diff] [blame] | 903 | atoms->max_lat = delta; |
Frederic Weisbecker | 3786310a | 2009-12-09 21:40:08 +0100 | [diff] [blame] | 904 | atoms->max_lat_at = timestamp; |
| 905 | } |
Frederic Weisbecker | 6668567 | 2009-09-13 01:56:25 +0200 | [diff] [blame] | 906 | atoms->nb_atoms++; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 907 | } |
| 908 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 909 | static int latency_switch_event(struct perf_sched *sched, |
| 910 | struct perf_evsel *evsel, |
| 911 | struct perf_sample *sample, |
| 912 | struct machine *machine) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 913 | { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 914 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
| 915 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); |
| 916 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 917 | struct work_atoms *out_events, *in_events; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 918 | struct thread *sched_out, *sched_in; |
Arnaldo Carvalho de Melo | 7f7f8d0 | 2012-08-07 11:33:42 -0300 | [diff] [blame] | 919 | u64 timestamp0, timestamp = sample->time; |
| 920 | int cpu = sample->cpu; |
Ingo Molnar | ea92ed5 | 2009-09-12 10:08:34 +0200 | [diff] [blame] | 921 | s64 delta; |
| 922 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 923 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
Ingo Molnar | ea92ed5 | 2009-09-12 10:08:34 +0200 | [diff] [blame] | 924 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 925 | timestamp0 = sched->cpu_last_switched[cpu]; |
| 926 | sched->cpu_last_switched[cpu] = timestamp; |
Ingo Molnar | ea92ed5 | 2009-09-12 10:08:34 +0200 | [diff] [blame] | 927 | if (timestamp0) |
| 928 | delta = timestamp - timestamp0; |
| 929 | else |
| 930 | delta = 0; |
| 931 | |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 932 | if (delta < 0) { |
| 933 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
| 934 | return -1; |
| 935 | } |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 936 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 937 | sched_out = machine__findnew_thread(machine, prev_pid); |
| 938 | sched_in = machine__findnew_thread(machine, next_pid); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 939 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 940 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 941 | if (!out_events) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 942 | if (thread_atoms_insert(sched, sched_out)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 943 | return -1; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 944 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 945 | if (!out_events) { |
| 946 | pr_err("out-event: Internal tree error"); |
| 947 | return -1; |
| 948 | } |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 949 | } |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 950 | if (add_sched_out_event(out_events, sched_out_state(prev_state), timestamp)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 951 | return -1; |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 952 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 953 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 954 | if (!in_events) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 955 | if (thread_atoms_insert(sched, sched_in)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 956 | return -1; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 957 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 958 | if (!in_events) { |
| 959 | pr_err("in-event: Internal tree error"); |
| 960 | return -1; |
| 961 | } |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 962 | /* |
| 963 | * Take came in we have not heard about yet, |
| 964 | * add in an initial atom in runnable state: |
| 965 | */ |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 966 | if (add_sched_out_event(in_events, 'R', timestamp)) |
| 967 | return -1; |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 968 | } |
| 969 | add_sched_in_event(in_events, timestamp); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 970 | |
| 971 | return 0; |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 972 | } |
| 973 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 974 | static int latency_runtime_event(struct perf_sched *sched, |
| 975 | struct perf_evsel *evsel, |
| 976 | struct perf_sample *sample, |
| 977 | struct machine *machine) |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 978 | { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 979 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
| 980 | const u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); |
| 981 | struct thread *thread = machine__findnew_thread(machine, pid); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 982 | struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
Arnaldo Carvalho de Melo | 7f7f8d0 | 2012-08-07 11:33:42 -0300 | [diff] [blame] | 983 | u64 timestamp = sample->time; |
| 984 | int cpu = sample->cpu; |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 985 | |
| 986 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 987 | if (!atoms) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 988 | if (thread_atoms_insert(sched, thread)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 989 | return -1; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 990 | atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 991 | if (!atoms) { |
Namhyung Kim | 60b7d14 | 2012-09-12 11:11:06 +0900 | [diff] [blame] | 992 | pr_err("in-event: Internal tree error"); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 993 | return -1; |
| 994 | } |
| 995 | if (add_sched_out_event(atoms, 'R', timestamp)) |
| 996 | return -1; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 997 | } |
| 998 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 999 | add_runtime_event(atoms, runtime, timestamp); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1000 | return 0; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1001 | } |
| 1002 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1003 | static int latency_wakeup_event(struct perf_sched *sched, |
| 1004 | struct perf_evsel *evsel, |
| 1005 | struct perf_sample *sample, |
| 1006 | struct machine *machine) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1007 | { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1008 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"), |
| 1009 | success = perf_evsel__intval(evsel, sample, "success"); |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1010 | struct work_atoms *atoms; |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1011 | struct work_atom *atom; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1012 | struct thread *wakee; |
Arnaldo Carvalho de Melo | 7f7f8d0 | 2012-08-07 11:33:42 -0300 | [diff] [blame] | 1013 | u64 timestamp = sample->time; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1014 | |
| 1015 | /* Note for later, it may be interesting to observe the failing cases */ |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1016 | if (!success) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1017 | return 0; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1018 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1019 | wakee = machine__findnew_thread(machine, pid); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1020 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
Frederic Weisbecker | 1756220 | 2009-09-12 23:11:32 +0200 | [diff] [blame] | 1021 | if (!atoms) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1022 | if (thread_atoms_insert(sched, wakee)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1023 | return -1; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1024 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1025 | if (!atoms) { |
Namhyung Kim | 60b7d14 | 2012-09-12 11:11:06 +0900 | [diff] [blame] | 1026 | pr_err("wakeup-event: Internal tree error"); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1027 | return -1; |
| 1028 | } |
| 1029 | if (add_sched_out_event(atoms, 'S', timestamp)) |
| 1030 | return -1; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1031 | } |
| 1032 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1033 | BUG_ON(list_empty(&atoms->work_list)); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1034 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1035 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1036 | |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1037 | /* |
| 1038 | * You WILL be missing events if you've recorded only |
| 1039 | * one CPU, or are only looking at only one, so don't |
| 1040 | * make useless noise. |
| 1041 | */ |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1042 | if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING) |
| 1043 | sched->nr_state_machine_bugs++; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1044 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1045 | sched->nr_timestamps++; |
Ingo Molnar | ea57c4f | 2009-09-13 18:15:54 +0200 | [diff] [blame] | 1046 | if (atom->sched_out_time > timestamp) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1047 | sched->nr_unordered_timestamps++; |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1048 | return 0; |
Ingo Molnar | ea57c4f | 2009-09-13 18:15:54 +0200 | [diff] [blame] | 1049 | } |
Frederic Weisbecker | aa1ab9d | 2009-09-14 03:01:12 +0200 | [diff] [blame] | 1050 | |
Ingo Molnar | b1ffe8f | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1051 | atom->state = THREAD_WAIT_CPU; |
| 1052 | atom->wake_up_time = timestamp; |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1053 | return 0; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1054 | } |
| 1055 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1056 | static int latency_migrate_task_event(struct perf_sched *sched, |
| 1057 | struct perf_evsel *evsel, |
| 1058 | struct perf_sample *sample, |
| 1059 | struct machine *machine) |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1060 | { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1061 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
Arnaldo Carvalho de Melo | 7f7f8d0 | 2012-08-07 11:33:42 -0300 | [diff] [blame] | 1062 | u64 timestamp = sample->time; |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1063 | struct work_atoms *atoms; |
| 1064 | struct work_atom *atom; |
| 1065 | struct thread *migrant; |
| 1066 | |
| 1067 | /* |
| 1068 | * Only need to worry about migration when profiling one CPU. |
| 1069 | */ |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1070 | if (sched->profile_cpu == -1) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1071 | return 0; |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1072 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1073 | migrant = machine__findnew_thread(machine, pid); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1074 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1075 | if (!atoms) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1076 | if (thread_atoms_insert(sched, migrant)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1077 | return -1; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1078 | register_pid(sched, migrant->pid, migrant->comm); |
| 1079 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1080 | if (!atoms) { |
Namhyung Kim | 60b7d14 | 2012-09-12 11:11:06 +0900 | [diff] [blame] | 1081 | pr_err("migration-event: Internal tree error"); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1082 | return -1; |
| 1083 | } |
| 1084 | if (add_sched_out_event(atoms, 'R', timestamp)) |
| 1085 | return -1; |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1086 | } |
| 1087 | |
| 1088 | BUG_ON(list_empty(&atoms->work_list)); |
| 1089 | |
| 1090 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
| 1091 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; |
| 1092 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1093 | sched->nr_timestamps++; |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1094 | |
| 1095 | if (atom->sched_out_time > timestamp) |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1096 | sched->nr_unordered_timestamps++; |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1097 | |
| 1098 | return 0; |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1099 | } |
| 1100 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1101 | static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1102 | { |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1103 | int i; |
| 1104 | int ret; |
Frederic Weisbecker | 6668567 | 2009-09-13 01:56:25 +0200 | [diff] [blame] | 1105 | u64 avg; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1106 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1107 | if (!work_list->nb_atoms) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1108 | return; |
Ingo Molnar | ea57c4f | 2009-09-13 18:15:54 +0200 | [diff] [blame] | 1109 | /* |
| 1110 | * Ignore idle threads: |
| 1111 | */ |
Ingo Molnar | 80ed098 | 2009-09-16 14:12:36 +0200 | [diff] [blame] | 1112 | if (!strcmp(work_list->thread->comm, "swapper")) |
Ingo Molnar | ea57c4f | 2009-09-13 18:15:54 +0200 | [diff] [blame] | 1113 | return; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1114 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1115 | sched->all_runtime += work_list->total_runtime; |
| 1116 | sched->all_count += work_list->nb_atoms; |
Frederic Weisbecker | 6668567 | 2009-09-13 01:56:25 +0200 | [diff] [blame] | 1117 | |
Ingo Molnar | 80ed098 | 2009-09-16 14:12:36 +0200 | [diff] [blame] | 1118 | ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1119 | |
mingo | 08f69e6 | 2009-09-14 18:30:44 +0200 | [diff] [blame] | 1120 | for (i = 0; i < 24 - ret; i++) |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1121 | printf(" "); |
| 1122 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1123 | avg = work_list->total_lat / work_list->nb_atoms; |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1124 | |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 1125 | printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n", |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1126 | (double)work_list->total_runtime / 1e6, |
| 1127 | work_list->nb_atoms, (double)avg / 1e6, |
Frederic Weisbecker | 3786310a | 2009-12-09 21:40:08 +0100 | [diff] [blame] | 1128 | (double)work_list->max_lat / 1e6, |
| 1129 | (double)work_list->max_lat_at / 1e9); |
Frederic Weisbecker | cdce9d7 | 2009-09-12 08:06:14 +0200 | [diff] [blame] | 1130 | } |
| 1131 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1132 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1133 | { |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1134 | if (l->thread->pid < r->thread->pid) |
| 1135 | return -1; |
| 1136 | if (l->thread->pid > r->thread->pid) |
| 1137 | return 1; |
| 1138 | |
| 1139 | return 0; |
| 1140 | } |
| 1141 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1142 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1143 | { |
| 1144 | u64 avgl, avgr; |
| 1145 | |
| 1146 | if (!l->nb_atoms) |
| 1147 | return -1; |
| 1148 | |
| 1149 | if (!r->nb_atoms) |
| 1150 | return 1; |
| 1151 | |
| 1152 | avgl = l->total_lat / l->nb_atoms; |
| 1153 | avgr = r->total_lat / r->nb_atoms; |
| 1154 | |
| 1155 | if (avgl < avgr) |
| 1156 | return -1; |
| 1157 | if (avgl > avgr) |
| 1158 | return 1; |
| 1159 | |
| 1160 | return 0; |
| 1161 | } |
| 1162 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1163 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1164 | { |
| 1165 | if (l->max_lat < r->max_lat) |
| 1166 | return -1; |
| 1167 | if (l->max_lat > r->max_lat) |
| 1168 | return 1; |
| 1169 | |
| 1170 | return 0; |
| 1171 | } |
| 1172 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1173 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1174 | { |
| 1175 | if (l->nb_atoms < r->nb_atoms) |
| 1176 | return -1; |
| 1177 | if (l->nb_atoms > r->nb_atoms) |
| 1178 | return 1; |
| 1179 | |
| 1180 | return 0; |
| 1181 | } |
| 1182 | |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1183 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1184 | { |
| 1185 | if (l->total_runtime < r->total_runtime) |
| 1186 | return -1; |
| 1187 | if (l->total_runtime > r->total_runtime) |
| 1188 | return 1; |
| 1189 | |
| 1190 | return 0; |
| 1191 | } |
| 1192 | |
Randy Dunlap | cbef79a | 2009-10-05 13:17:29 -0700 | [diff] [blame] | 1193 | static int sort_dimension__add(const char *tok, struct list_head *list) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1194 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1195 | size_t i; |
| 1196 | static struct sort_dimension avg_sort_dimension = { |
| 1197 | .name = "avg", |
| 1198 | .cmp = avg_cmp, |
| 1199 | }; |
| 1200 | static struct sort_dimension max_sort_dimension = { |
| 1201 | .name = "max", |
| 1202 | .cmp = max_cmp, |
| 1203 | }; |
| 1204 | static struct sort_dimension pid_sort_dimension = { |
| 1205 | .name = "pid", |
| 1206 | .cmp = pid_cmp, |
| 1207 | }; |
| 1208 | static struct sort_dimension runtime_sort_dimension = { |
| 1209 | .name = "runtime", |
| 1210 | .cmp = runtime_cmp, |
| 1211 | }; |
| 1212 | static struct sort_dimension switch_sort_dimension = { |
| 1213 | .name = "switch", |
| 1214 | .cmp = switch_cmp, |
| 1215 | }; |
| 1216 | struct sort_dimension *available_sorts[] = { |
| 1217 | &pid_sort_dimension, |
| 1218 | &avg_sort_dimension, |
| 1219 | &max_sort_dimension, |
| 1220 | &switch_sort_dimension, |
| 1221 | &runtime_sort_dimension, |
| 1222 | }; |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1223 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1224 | for (i = 0; i < ARRAY_SIZE(available_sorts); i++) { |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1225 | if (!strcmp(available_sorts[i]->name, tok)) { |
| 1226 | list_add_tail(&available_sorts[i]->list, list); |
| 1227 | |
| 1228 | return 0; |
| 1229 | } |
| 1230 | } |
| 1231 | |
| 1232 | return -1; |
| 1233 | } |
| 1234 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1235 | static void perf_sched__sort_lat(struct perf_sched *sched) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1236 | { |
| 1237 | struct rb_node *node; |
| 1238 | |
| 1239 | for (;;) { |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1240 | struct work_atoms *data; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1241 | node = rb_first(&sched->atom_root); |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1242 | if (!node) |
| 1243 | break; |
| 1244 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1245 | rb_erase(node, &sched->atom_root); |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1246 | data = rb_entry(node, struct work_atoms, node); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1247 | __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list); |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1248 | } |
| 1249 | } |
| 1250 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1251 | static int process_sched_wakeup_event(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1252 | struct perf_evsel *evsel, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1253 | struct perf_sample *sample, |
Arnaldo Carvalho de Melo | 4218e67 | 2012-09-11 13:18:47 -0300 | [diff] [blame] | 1254 | struct machine *machine) |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 1255 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1256 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 1257 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1258 | if (sched->tp_handler->wakeup_event) |
| 1259 | return sched->tp_handler->wakeup_event(sched, evsel, sample, machine); |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 1260 | |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1261 | return 0; |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 1262 | } |
| 1263 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1264 | static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel, |
| 1265 | struct perf_sample *sample, struct machine *machine) |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1266 | { |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1267 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
| 1268 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1269 | struct thread *sched_out __maybe_unused, *sched_in; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1270 | int new_shortname; |
Arnaldo Carvalho de Melo | 7f7f8d0 | 2012-08-07 11:33:42 -0300 | [diff] [blame] | 1271 | u64 timestamp0, timestamp = sample->time; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1272 | s64 delta; |
Arnaldo Carvalho de Melo | 7f7f8d0 | 2012-08-07 11:33:42 -0300 | [diff] [blame] | 1273 | int cpu, this_cpu = sample->cpu; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1274 | |
| 1275 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); |
| 1276 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1277 | if (this_cpu > sched->max_cpu) |
| 1278 | sched->max_cpu = this_cpu; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1279 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1280 | timestamp0 = sched->cpu_last_switched[this_cpu]; |
| 1281 | sched->cpu_last_switched[this_cpu] = timestamp; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1282 | if (timestamp0) |
| 1283 | delta = timestamp - timestamp0; |
| 1284 | else |
| 1285 | delta = 0; |
| 1286 | |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1287 | if (delta < 0) { |
Namhyung Kim | 60b7d14 | 2012-09-12 11:11:06 +0900 | [diff] [blame] | 1288 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1289 | return -1; |
| 1290 | } |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1291 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1292 | sched_out = machine__findnew_thread(machine, prev_pid); |
| 1293 | sched_in = machine__findnew_thread(machine, next_pid); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1294 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1295 | sched->curr_thread[this_cpu] = sched_in; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1296 | |
| 1297 | printf(" "); |
| 1298 | |
| 1299 | new_shortname = 0; |
| 1300 | if (!sched_in->shortname[0]) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1301 | sched_in->shortname[0] = sched->next_shortname1; |
| 1302 | sched_in->shortname[1] = sched->next_shortname2; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1303 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1304 | if (sched->next_shortname1 < 'Z') { |
| 1305 | sched->next_shortname1++; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1306 | } else { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1307 | sched->next_shortname1='A'; |
| 1308 | if (sched->next_shortname2 < '9') { |
| 1309 | sched->next_shortname2++; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1310 | } else { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1311 | sched->next_shortname2='0'; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1312 | } |
| 1313 | } |
| 1314 | new_shortname = 1; |
| 1315 | } |
| 1316 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1317 | for (cpu = 0; cpu <= sched->max_cpu; cpu++) { |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1318 | if (cpu != this_cpu) |
| 1319 | printf(" "); |
| 1320 | else |
| 1321 | printf("*"); |
| 1322 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1323 | if (sched->curr_thread[cpu]) { |
| 1324 | if (sched->curr_thread[cpu]->pid) |
| 1325 | printf("%2s ", sched->curr_thread[cpu]->shortname); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1326 | else |
| 1327 | printf(". "); |
| 1328 | } else |
| 1329 | printf(" "); |
| 1330 | } |
| 1331 | |
| 1332 | printf(" %12.6f secs ", (double)timestamp/1e9); |
| 1333 | if (new_shortname) { |
| 1334 | printf("%s => %s:%d\n", |
| 1335 | sched_in->shortname, sched_in->comm, sched_in->pid); |
| 1336 | } else { |
| 1337 | printf("\n"); |
| 1338 | } |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1339 | |
| 1340 | return 0; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1341 | } |
| 1342 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1343 | static int process_sched_switch_event(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1344 | struct perf_evsel *evsel, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1345 | struct perf_sample *sample, |
Arnaldo Carvalho de Melo | 4218e67 | 2012-09-11 13:18:47 -0300 | [diff] [blame] | 1346 | struct machine *machine) |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 1347 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1348 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1349 | int this_cpu = sample->cpu, err = 0; |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1350 | u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
| 1351 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 1352 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1353 | if (sched->curr_pid[this_cpu] != (u32)-1) { |
Ingo Molnar | c8a3775 | 2009-09-16 14:07:00 +0200 | [diff] [blame] | 1354 | /* |
| 1355 | * Are we trying to switch away a PID that is |
| 1356 | * not current? |
| 1357 | */ |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1358 | if (sched->curr_pid[this_cpu] != prev_pid) |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1359 | sched->nr_context_switch_bugs++; |
Ingo Molnar | c8a3775 | 2009-09-16 14:07:00 +0200 | [diff] [blame] | 1360 | } |
Ingo Molnar | c8a3775 | 2009-09-16 14:07:00 +0200 | [diff] [blame] | 1361 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1362 | if (sched->tp_handler->switch_event) |
| 1363 | err = sched->tp_handler->switch_event(sched, evsel, sample, machine); |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1364 | |
| 1365 | sched->curr_pid[this_cpu] = next_pid; |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1366 | return err; |
Frederic Weisbecker | 419ab0d | 2009-09-12 03:59:01 +0200 | [diff] [blame] | 1367 | } |
| 1368 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1369 | static int process_sched_runtime_event(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1370 | struct perf_evsel *evsel, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1371 | struct perf_sample *sample, |
Arnaldo Carvalho de Melo | 4218e67 | 2012-09-11 13:18:47 -0300 | [diff] [blame] | 1372 | struct machine *machine) |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1373 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1374 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
mingo | 39aeb52 | 2009-09-14 20:04:48 +0200 | [diff] [blame] | 1375 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1376 | if (sched->tp_handler->runtime_event) |
| 1377 | return sched->tp_handler->runtime_event(sched, evsel, sample, machine); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1378 | |
| 1379 | return 0; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1380 | } |
| 1381 | |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1382 | static int process_sched_fork_event(struct perf_tool *tool, |
| 1383 | struct perf_evsel *evsel, |
| 1384 | struct perf_sample *sample, |
| 1385 | struct machine *machine __maybe_unused) |
| 1386 | { |
| 1387 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
| 1388 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1389 | if (sched->tp_handler->fork_event) |
| 1390 | return sched->tp_handler->fork_event(sched, evsel, sample); |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1391 | |
| 1392 | return 0; |
| 1393 | } |
| 1394 | |
| 1395 | static int process_sched_exit_event(struct perf_tool *tool __maybe_unused, |
| 1396 | struct perf_evsel *evsel, |
| 1397 | struct perf_sample *sample __maybe_unused, |
| 1398 | struct machine *machine __maybe_unused) |
| 1399 | { |
| 1400 | pr_debug("sched_exit event %p\n", evsel); |
| 1401 | return 0; |
| 1402 | } |
| 1403 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1404 | static int process_sched_migrate_task_event(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1405 | struct perf_evsel *evsel, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1406 | struct perf_sample *sample, |
Arnaldo Carvalho de Melo | 4218e67 | 2012-09-11 13:18:47 -0300 | [diff] [blame] | 1407 | struct machine *machine) |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1408 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1409 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1410 | |
Arnaldo Carvalho de Melo | 9ec3f4e | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1411 | if (sched->tp_handler->migrate_task_event) |
| 1412 | return sched->tp_handler->migrate_task_event(sched, evsel, sample, machine); |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1413 | |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1414 | return 0; |
Mike Galbraith | 55ffb7a | 2009-10-10 14:46:04 +0200 | [diff] [blame] | 1415 | } |
| 1416 | |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1417 | typedef int (*tracepoint_handler)(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1418 | struct perf_evsel *evsel, |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1419 | struct perf_sample *sample, |
Arnaldo Carvalho de Melo | 4218e67 | 2012-09-11 13:18:47 -0300 | [diff] [blame] | 1420 | struct machine *machine); |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 1421 | |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1422 | static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused, |
| 1423 | union perf_event *event __maybe_unused, |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 1424 | struct perf_sample *sample, |
| 1425 | struct perf_evsel *evsel, |
| 1426 | struct machine *machine) |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1427 | { |
Arnaldo Carvalho de Melo | 73ee3b2 | 2012-10-01 13:58:17 -0300 | [diff] [blame] | 1428 | struct thread *thread = machine__findnew_thread(machine, sample->tid); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1429 | int err = 0; |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1430 | |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1431 | if (thread == NULL) { |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 1432 | pr_debug("problem processing %s event, skipping it.\n", |
Arnaldo Carvalho de Melo | 22c8b84 | 2012-06-12 13:55:13 -0300 | [diff] [blame] | 1433 | perf_evsel__name(evsel)); |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1434 | return -1; |
| 1435 | } |
| 1436 | |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 1437 | evsel->hists.stats.total_period += sample->period; |
| 1438 | hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); |
Julia Lawall | f39cdf2 | 2009-10-17 08:43:17 +0200 | [diff] [blame] | 1439 | |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 1440 | if (evsel->handler.func != NULL) { |
| 1441 | tracepoint_handler f = evsel->handler.func; |
Arnaldo Carvalho de Melo | 2b7fcbc | 2012-09-11 19:29:17 -0300 | [diff] [blame] | 1442 | err = f(tool, evsel, sample, machine); |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 1443 | } |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1444 | |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1445 | return err; |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1446 | } |
| 1447 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1448 | static int perf_sched__read_events(struct perf_sched *sched, bool destroy, |
| 1449 | struct perf_session **psession) |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1450 | { |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 1451 | const struct perf_evsel_str_handler handlers[] = { |
| 1452 | { "sched:sched_switch", process_sched_switch_event, }, |
| 1453 | { "sched:sched_stat_runtime", process_sched_runtime_event, }, |
| 1454 | { "sched:sched_wakeup", process_sched_wakeup_event, }, |
| 1455 | { "sched:sched_wakeup_new", process_sched_wakeup_event, }, |
| 1456 | { "sched:sched_process_fork", process_sched_fork_event, }, |
| 1457 | { "sched:sched_process_exit", process_sched_exit_event, }, |
| 1458 | { "sched:sched_migrate_task", process_sched_migrate_task_event, }, |
| 1459 | }; |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 1460 | struct perf_session *session; |
| 1461 | |
Feng Tang | 70cb4e9 | 2012-10-30 11:56:02 +0800 | [diff] [blame] | 1462 | session = perf_session__new(input_name, O_RDONLY, 0, false, &sched->tool); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1463 | if (session == NULL) { |
| 1464 | pr_debug("No Memory for session\n"); |
| 1465 | return -1; |
| 1466 | } |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 1467 | |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1468 | if (perf_session__set_tracepoints_handlers(session, handlers)) |
| 1469 | goto out_delete; |
Arnaldo Carvalho de Melo | ee29be6 | 2011-11-28 17:57:40 -0200 | [diff] [blame] | 1470 | |
Arnaldo Carvalho de Melo | cee75ac | 2010-05-14 13:16:55 -0300 | [diff] [blame] | 1471 | if (perf_session__has_traces(session, "record -R")) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1472 | int err = perf_session__process_events(session, &sched->tool); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1473 | if (err) { |
| 1474 | pr_err("Failed to process events, error %d", err); |
| 1475 | goto out_delete; |
| 1476 | } |
Jiri Olsa | 4c09baf | 2011-08-08 23:03:34 +0200 | [diff] [blame] | 1477 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1478 | sched->nr_events = session->hists.stats.nr_events[0]; |
| 1479 | sched->nr_lost_events = session->hists.stats.total_lost; |
| 1480 | sched->nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST]; |
Arnaldo Carvalho de Melo | cee75ac | 2010-05-14 13:16:55 -0300 | [diff] [blame] | 1481 | } |
Arnaldo Carvalho de Melo | d549c769 | 2009-12-27 21:37:02 -0200 | [diff] [blame] | 1482 | |
Jiri Olsa | 4c09baf | 2011-08-08 23:03:34 +0200 | [diff] [blame] | 1483 | if (destroy) |
| 1484 | perf_session__delete(session); |
| 1485 | |
| 1486 | if (psession) |
| 1487 | *psession = session; |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1488 | |
| 1489 | return 0; |
| 1490 | |
| 1491 | out_delete: |
| 1492 | perf_session__delete(session); |
| 1493 | return -1; |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1494 | } |
| 1495 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1496 | static void print_bad_events(struct perf_sched *sched) |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1497 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1498 | if (sched->nr_unordered_timestamps && sched->nr_timestamps) { |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1499 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1500 | (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0, |
| 1501 | sched->nr_unordered_timestamps, sched->nr_timestamps); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1502 | } |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1503 | if (sched->nr_lost_events && sched->nr_events) { |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1504 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1505 | (double)sched->nr_lost_events/(double)sched->nr_events * 100.0, |
| 1506 | sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1507 | } |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1508 | if (sched->nr_state_machine_bugs && sched->nr_timestamps) { |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1509 | printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1510 | (double)sched->nr_state_machine_bugs/(double)sched->nr_timestamps*100.0, |
| 1511 | sched->nr_state_machine_bugs, sched->nr_timestamps); |
| 1512 | if (sched->nr_lost_events) |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1513 | printf(" (due to lost events?)"); |
| 1514 | printf("\n"); |
| 1515 | } |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1516 | if (sched->nr_context_switch_bugs && sched->nr_timestamps) { |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1517 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1518 | (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0, |
| 1519 | sched->nr_context_switch_bugs, sched->nr_timestamps); |
| 1520 | if (sched->nr_lost_events) |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1521 | printf(" (due to lost events?)"); |
| 1522 | printf("\n"); |
| 1523 | } |
| 1524 | } |
| 1525 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1526 | static int perf_sched__lat(struct perf_sched *sched) |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1527 | { |
| 1528 | struct rb_node *next; |
Jiri Olsa | 4c09baf | 2011-08-08 23:03:34 +0200 | [diff] [blame] | 1529 | struct perf_session *session; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1530 | |
| 1531 | setup_pager(); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1532 | if (perf_sched__read_events(sched, false, &session)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1533 | return -1; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1534 | perf_sched__sort_lat(sched); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1535 | |
Frederic Weisbecker | 3786310a | 2009-12-09 21:40:08 +0100 | [diff] [blame] | 1536 | printf("\n ---------------------------------------------------------------------------------------------------------------\n"); |
| 1537 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); |
| 1538 | printf(" ---------------------------------------------------------------------------------------------------------------\n"); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1539 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1540 | next = rb_first(&sched->sorted_atom_root); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1541 | |
| 1542 | while (next) { |
| 1543 | struct work_atoms *work_list; |
| 1544 | |
| 1545 | work_list = rb_entry(next, struct work_atoms, node); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1546 | output_lat_thread(sched, work_list); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1547 | next = rb_next(next); |
| 1548 | } |
| 1549 | |
| 1550 | printf(" -----------------------------------------------------------------------------------------\n"); |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 1551 | printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1552 | (double)sched->all_runtime / 1e6, sched->all_count); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1553 | |
| 1554 | printf(" ---------------------------------------------------\n"); |
| 1555 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1556 | print_bad_events(sched); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1557 | printf("\n"); |
| 1558 | |
Jiri Olsa | 4c09baf | 2011-08-08 23:03:34 +0200 | [diff] [blame] | 1559 | perf_session__delete(session); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1560 | return 0; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1561 | } |
| 1562 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1563 | static int perf_sched__map(struct perf_sched *sched) |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1564 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1565 | sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
Ingo Molnar | 40749d0 | 2009-09-17 18:24:55 +0200 | [diff] [blame] | 1566 | |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1567 | setup_pager(); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1568 | if (perf_sched__read_events(sched, true, NULL)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1569 | return -1; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1570 | print_bad_events(sched); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1571 | return 0; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1572 | } |
| 1573 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1574 | static int perf_sched__replay(struct perf_sched *sched) |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1575 | { |
| 1576 | unsigned long i; |
| 1577 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1578 | calibrate_run_measurement_overhead(sched); |
| 1579 | calibrate_sleep_measurement_overhead(sched); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1580 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1581 | test_calibrations(sched); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1582 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1583 | if (perf_sched__read_events(sched, true, NULL)) |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1584 | return -1; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1585 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1586 | printf("nr_run_events: %ld\n", sched->nr_run_events); |
| 1587 | printf("nr_sleep_events: %ld\n", sched->nr_sleep_events); |
| 1588 | printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1589 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1590 | if (sched->targetless_wakeups) |
| 1591 | printf("target-less wakeups: %ld\n", sched->targetless_wakeups); |
| 1592 | if (sched->multitarget_wakeups) |
| 1593 | printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups); |
| 1594 | if (sched->nr_run_events_optimized) |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1595 | printf("run atoms optimized: %ld\n", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1596 | sched->nr_run_events_optimized); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1597 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1598 | print_task_traces(sched); |
| 1599 | add_cross_task_wakeups(sched); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1600 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1601 | create_tasks(sched); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1602 | printf("------------------------------------------------------------\n"); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1603 | for (i = 0; i < sched->replay_repeat; i++) |
| 1604 | run_one_test(sched); |
Arnaldo Carvalho de Melo | a116e05 | 2012-09-08 22:53:06 -0300 | [diff] [blame] | 1605 | |
| 1606 | return 0; |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1607 | } |
| 1608 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1609 | static void setup_sorting(struct perf_sched *sched, const struct option *options, |
| 1610 | const char * const usage_msg[]) |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1611 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1612 | char *tmp, *tok, *str = strdup(sched->sort_order); |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1613 | |
| 1614 | for (tok = strtok_r(str, ", ", &tmp); |
| 1615 | tok; tok = strtok_r(NULL, ", ", &tmp)) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1616 | if (sort_dimension__add(tok, &sched->sort_list) < 0) { |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1617 | error("Unknown --sort key: `%s'", tok); |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1618 | usage_with_options(usage_msg, options); |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1619 | } |
| 1620 | } |
| 1621 | |
| 1622 | free(str); |
| 1623 | |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1624 | sort_dimension__add("pid", &sched->cmp_pid); |
Frederic Weisbecker | daa1d7a | 2009-09-13 03:36:29 +0200 | [diff] [blame] | 1625 | } |
| 1626 | |
Ingo Molnar | 1fc35b2 | 2009-09-13 09:44:29 +0200 | [diff] [blame] | 1627 | static int __cmd_record(int argc, const char **argv) |
| 1628 | { |
| 1629 | unsigned int rec_argc, i, j; |
| 1630 | const char **rec_argv; |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1631 | const char * const record_args[] = { |
| 1632 | "record", |
| 1633 | "-a", |
| 1634 | "-R", |
| 1635 | "-f", |
| 1636 | "-m", "1024", |
| 1637 | "-c", "1", |
| 1638 | "-e", "sched:sched_switch", |
| 1639 | "-e", "sched:sched_stat_wait", |
| 1640 | "-e", "sched:sched_stat_sleep", |
| 1641 | "-e", "sched:sched_stat_iowait", |
| 1642 | "-e", "sched:sched_stat_runtime", |
| 1643 | "-e", "sched:sched_process_exit", |
| 1644 | "-e", "sched:sched_process_fork", |
| 1645 | "-e", "sched:sched_wakeup", |
| 1646 | "-e", "sched:sched_migrate_task", |
| 1647 | }; |
Ingo Molnar | 1fc35b2 | 2009-09-13 09:44:29 +0200 | [diff] [blame] | 1648 | |
| 1649 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; |
| 1650 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
| 1651 | |
Arnaldo Carvalho de Melo | e462dc5 | 2011-01-10 10:48:47 -0200 | [diff] [blame] | 1652 | if (rec_argv == NULL) |
Chris Samuel | ce47dc5 | 2010-11-13 13:35:06 +1100 | [diff] [blame] | 1653 | return -ENOMEM; |
| 1654 | |
Ingo Molnar | 1fc35b2 | 2009-09-13 09:44:29 +0200 | [diff] [blame] | 1655 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
| 1656 | rec_argv[i] = strdup(record_args[i]); |
| 1657 | |
| 1658 | for (j = 1; j < (unsigned int)argc; j++, i++) |
| 1659 | rec_argv[i] = argv[j]; |
| 1660 | |
| 1661 | BUG_ON(i != rec_argc); |
| 1662 | |
| 1663 | return cmd_record(i, rec_argv, NULL); |
| 1664 | } |
| 1665 | |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1666 | int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1667 | { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1668 | const char default_sort_order[] = "avg, max, switch, runtime"; |
| 1669 | struct perf_sched sched = { |
| 1670 | .tool = { |
| 1671 | .sample = perf_sched__process_tracepoint_sample, |
| 1672 | .comm = perf_event__process_comm, |
| 1673 | .lost = perf_event__process_lost, |
Arnaldo Carvalho de Melo | 0439539 | 2012-10-06 15:53:41 -0300 | [diff] [blame] | 1674 | .exit = perf_event__process_exit, |
Arnaldo Carvalho de Melo | f62d3f0 | 2012-10-06 15:44:59 -0300 | [diff] [blame] | 1675 | .fork = perf_event__process_fork, |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1676 | .ordered_samples = true, |
| 1677 | }, |
| 1678 | .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid), |
| 1679 | .sort_list = LIST_HEAD_INIT(sched.sort_list), |
| 1680 | .start_work_mutex = PTHREAD_MUTEX_INITIALIZER, |
| 1681 | .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER, |
| 1682 | .curr_pid = { [0 ... MAX_CPUS - 1] = -1 }, |
| 1683 | .sort_order = default_sort_order, |
| 1684 | .replay_repeat = 10, |
| 1685 | .profile_cpu = -1, |
| 1686 | .next_shortname1 = 'A', |
| 1687 | .next_shortname2 = '0', |
| 1688 | }; |
| 1689 | const struct option latency_options[] = { |
| 1690 | OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]", |
| 1691 | "sort by key(s): runtime, switch, avg, max"), |
| 1692 | OPT_INCR('v', "verbose", &verbose, |
| 1693 | "be more verbose (show symbol address, etc)"), |
| 1694 | OPT_INTEGER('C', "CPU", &sched.profile_cpu, |
| 1695 | "CPU to profile on"), |
| 1696 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
| 1697 | "dump raw trace in ASCII"), |
| 1698 | OPT_END() |
| 1699 | }; |
| 1700 | const struct option replay_options[] = { |
| 1701 | OPT_UINTEGER('r', "repeat", &sched.replay_repeat, |
| 1702 | "repeat the workload replay N times (-1: infinite)"), |
| 1703 | OPT_INCR('v', "verbose", &verbose, |
| 1704 | "be more verbose (show symbol address, etc)"), |
| 1705 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
| 1706 | "dump raw trace in ASCII"), |
| 1707 | OPT_END() |
| 1708 | }; |
| 1709 | const struct option sched_options[] = { |
Feng Tang | 70cb4e9 | 2012-10-30 11:56:02 +0800 | [diff] [blame] | 1710 | OPT_STRING('i', "input", &input_name, "file", |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1711 | "input file name"), |
| 1712 | OPT_INCR('v', "verbose", &verbose, |
| 1713 | "be more verbose (show symbol address, etc)"), |
| 1714 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
| 1715 | "dump raw trace in ASCII"), |
| 1716 | OPT_END() |
| 1717 | }; |
| 1718 | const char * const latency_usage[] = { |
| 1719 | "perf sched latency [<options>]", |
| 1720 | NULL |
| 1721 | }; |
| 1722 | const char * const replay_usage[] = { |
| 1723 | "perf sched replay [<options>]", |
| 1724 | NULL |
| 1725 | }; |
| 1726 | const char * const sched_usage[] = { |
| 1727 | "perf sched [<options>] {record|latency|map|replay|script}", |
| 1728 | NULL |
| 1729 | }; |
| 1730 | struct trace_sched_handler lat_ops = { |
| 1731 | .wakeup_event = latency_wakeup_event, |
| 1732 | .switch_event = latency_switch_event, |
| 1733 | .runtime_event = latency_runtime_event, |
| 1734 | .fork_event = latency_fork_event, |
| 1735 | .migrate_task_event = latency_migrate_task_event, |
| 1736 | }; |
| 1737 | struct trace_sched_handler map_ops = { |
| 1738 | .switch_event = map_switch_event, |
| 1739 | }; |
| 1740 | struct trace_sched_handler replay_ops = { |
| 1741 | .wakeup_event = replay_wakeup_event, |
| 1742 | .switch_event = replay_switch_event, |
| 1743 | .fork_event = replay_fork_event, |
| 1744 | }; |
| 1745 | |
Ingo Molnar | f2858d8 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1746 | argc = parse_options(argc, argv, sched_options, sched_usage, |
| 1747 | PARSE_OPT_STOP_AT_NON_OPTION); |
| 1748 | if (!argc) |
| 1749 | usage_with_options(sched_usage, sched_options); |
| 1750 | |
Xiao Guangrong | c0777c5 | 2009-12-07 12:04:49 +0800 | [diff] [blame] | 1751 | /* |
Ingo Molnar | 133dc4c | 2010-11-16 18:45:39 +0100 | [diff] [blame] | 1752 | * Aliased to 'perf script' for now: |
Xiao Guangrong | c0777c5 | 2009-12-07 12:04:49 +0800 | [diff] [blame] | 1753 | */ |
Ingo Molnar | 133dc4c | 2010-11-16 18:45:39 +0100 | [diff] [blame] | 1754 | if (!strcmp(argv[0], "script")) |
| 1755 | return cmd_script(argc, argv, prefix); |
Xiao Guangrong | c0777c5 | 2009-12-07 12:04:49 +0800 | [diff] [blame] | 1756 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 1757 | symbol__init(); |
Ingo Molnar | 1fc35b2 | 2009-09-13 09:44:29 +0200 | [diff] [blame] | 1758 | if (!strncmp(argv[0], "rec", 3)) { |
| 1759 | return __cmd_record(argc, argv); |
| 1760 | } else if (!strncmp(argv[0], "lat", 3)) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1761 | sched.tp_handler = &lat_ops; |
Ingo Molnar | f2858d8 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1762 | if (argc > 1) { |
| 1763 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); |
| 1764 | if (argc) |
| 1765 | usage_with_options(latency_usage, latency_options); |
Ingo Molnar | f2858d8 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1766 | } |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1767 | setup_sorting(&sched, latency_options, latency_usage); |
| 1768 | return perf_sched__lat(&sched); |
Ingo Molnar | 0ec04e1 | 2009-09-16 17:40:48 +0200 | [diff] [blame] | 1769 | } else if (!strcmp(argv[0], "map")) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1770 | sched.tp_handler = &map_ops; |
| 1771 | setup_sorting(&sched, latency_options, latency_usage); |
| 1772 | return perf_sched__map(&sched); |
Ingo Molnar | f2858d8 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1773 | } else if (!strncmp(argv[0], "rep", 3)) { |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1774 | sched.tp_handler = &replay_ops; |
Ingo Molnar | f2858d8 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1775 | if (argc) { |
| 1776 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); |
| 1777 | if (argc) |
| 1778 | usage_with_options(replay_usage, replay_options); |
| 1779 | } |
Arnaldo Carvalho de Melo | 0e9b07e | 2012-09-11 17:29:27 -0300 | [diff] [blame] | 1780 | return perf_sched__replay(&sched); |
Ingo Molnar | f2858d8 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1781 | } else { |
| 1782 | usage_with_options(sched_usage, sched_options); |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1783 | } |
| 1784 | |
Ingo Molnar | ec15676 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1785 | return 0; |
Ingo Molnar | 0a02ad9 | 2009-09-11 12:12:54 +0200 | [diff] [blame] | 1786 | } |