blob: 33962612a5e9035ae42c83e15497a5713922556b [file] [log] [blame]
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001#include "builtin.h"
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02002#include "perf.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02003
4#include "util/util.h"
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02005#include "util/evlist.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02006#include "util/cache.h"
Arnaldo Carvalho de Meloe3f42602011-11-16 17:02:54 -02007#include "util/evsel.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02008#include "util/symbol.h"
9#include "util/thread.h"
10#include "util/header.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020011#include "util/session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020012#include "util/tool.h"
Yann Droneaud57480d22014-06-30 22:28:47 +020013#include "util/cloexec.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +020014
15#include "util/parse-options.h"
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020016#include "util/trace-event.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +020017
Ingo Molnar0a02ad92009-09-11 12:12:54 +020018#include "util/debug.h"
19
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020020#include <sys/prctl.h>
Markus Trippelsdorf7b78f132012-04-04 10:45:27 +020021#include <sys/resource.h>
Ingo Molnar0a02ad92009-09-11 12:12:54 +020022
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020023#include <semaphore.h>
24#include <pthread.h>
25#include <math.h>
Yunlong Songcb06ac22015-03-31 21:46:30 +080026#include <api/fs/fs.h>
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +020027
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020028#define PR_SET_NAME 15 /* Set process name */
29#define MAX_CPUS 4096
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020030#define COMM_LEN 20
31#define SYM_LEN 129
Yunlong Songa35e27d2015-03-31 21:46:29 +080032#define MAX_PID 1024000
Ingo Molnarec156762009-09-11 12:12:54 +020033
mingo39aeb522009-09-14 20:04:48 +020034struct sched_atom;
Ingo Molnarec156762009-09-11 12:12:54 +020035
36struct task_desc {
37 unsigned long nr;
38 unsigned long pid;
39 char comm[COMM_LEN];
40
41 unsigned long nr_events;
42 unsigned long curr_event;
mingo39aeb522009-09-14 20:04:48 +020043 struct sched_atom **atoms;
Ingo Molnarec156762009-09-11 12:12:54 +020044
45 pthread_t thread;
46 sem_t sleep_sem;
47
48 sem_t ready_for_work;
49 sem_t work_done_sem;
50
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020051 u64 cpu_usage;
Ingo Molnarec156762009-09-11 12:12:54 +020052};
53
54enum sched_event_type {
55 SCHED_EVENT_RUN,
56 SCHED_EVENT_SLEEP,
57 SCHED_EVENT_WAKEUP,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +020058 SCHED_EVENT_MIGRATION,
Ingo Molnarec156762009-09-11 12:12:54 +020059};
60
mingo39aeb522009-09-14 20:04:48 +020061struct sched_atom {
Ingo Molnarec156762009-09-11 12:12:54 +020062 enum sched_event_type type;
Arnaldo Carvalho de Meloeed05fe2010-04-05 12:53:45 -030063 int specific_wait;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020064 u64 timestamp;
65 u64 duration;
Ingo Molnarec156762009-09-11 12:12:54 +020066 unsigned long nr;
Ingo Molnarec156762009-09-11 12:12:54 +020067 sem_t *wait_sem;
68 struct task_desc *wakee;
69};
70
Dongshenge936e8e2014-05-05 16:05:54 +090071#define TASK_STATE_TO_CHAR_STR "RSDTtZXxKWP"
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020072
73enum thread_state {
74 THREAD_SLEEPING = 0,
75 THREAD_WAIT_CPU,
76 THREAD_SCHED_IN,
77 THREAD_IGNORE
78};
79
80struct work_atom {
81 struct list_head list;
82 enum thread_state state;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +020083 u64 sched_out_time;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020084 u64 wake_up_time;
85 u64 sched_in_time;
86 u64 runtime;
87};
88
mingo39aeb522009-09-14 20:04:48 +020089struct work_atoms {
90 struct list_head work_list;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020091 struct thread *thread;
92 struct rb_node node;
93 u64 max_lat;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +010094 u64 max_lat_at;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020095 u64 total_lat;
96 u64 nb_atoms;
97 u64 total_runtime;
Josef Bacik2f80dd42015-05-22 09:18:40 -040098 int num_merged;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020099};
100
mingo39aeb522009-09-14 20:04:48 +0200101typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200102
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300103struct perf_sched;
104
105struct trace_sched_handler {
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300106 int (*switch_event)(struct perf_sched *sched, struct perf_evsel *evsel,
107 struct perf_sample *sample, struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300108
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300109 int (*runtime_event)(struct perf_sched *sched, struct perf_evsel *evsel,
110 struct perf_sample *sample, struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300111
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300112 int (*wakeup_event)(struct perf_sched *sched, struct perf_evsel *evsel,
113 struct perf_sample *sample, struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300114
David Aherncb627502013-08-07 22:50:47 -0400115 /* PERF_RECORD_FORK event, not sched_process_fork tracepoint */
116 int (*fork_event)(struct perf_sched *sched, union perf_event *event,
117 struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300118
119 int (*migrate_task_event)(struct perf_sched *sched,
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300120 struct perf_evsel *evsel,
121 struct perf_sample *sample,
122 struct machine *machine);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300123};
124
125struct perf_sched {
126 struct perf_tool tool;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300127 const char *sort_order;
128 unsigned long nr_tasks;
Yunlong Songcb06ac22015-03-31 21:46:30 +0800129 struct task_desc **pid_to_task;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300130 struct task_desc **tasks;
131 const struct trace_sched_handler *tp_handler;
132 pthread_mutex_t start_work_mutex;
133 pthread_mutex_t work_done_wait_mutex;
134 int profile_cpu;
135/*
136 * Track the current task - that way we can know whether there's any
137 * weird events, such as a task being switched away that is not current.
138 */
139 int max_cpu;
140 u32 curr_pid[MAX_CPUS];
141 struct thread *curr_thread[MAX_CPUS];
142 char next_shortname1;
143 char next_shortname2;
144 unsigned int replay_repeat;
145 unsigned long nr_run_events;
146 unsigned long nr_sleep_events;
147 unsigned long nr_wakeup_events;
148 unsigned long nr_sleep_corrections;
149 unsigned long nr_run_events_optimized;
150 unsigned long targetless_wakeups;
151 unsigned long multitarget_wakeups;
152 unsigned long nr_runs;
153 unsigned long nr_timestamps;
154 unsigned long nr_unordered_timestamps;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300155 unsigned long nr_context_switch_bugs;
156 unsigned long nr_events;
157 unsigned long nr_lost_chunks;
158 unsigned long nr_lost_events;
159 u64 run_measurement_overhead;
160 u64 sleep_measurement_overhead;
161 u64 start_time;
162 u64 cpu_usage;
163 u64 runavg_cpu_usage;
164 u64 parent_cpu_usage;
165 u64 runavg_parent_cpu_usage;
166 u64 sum_runtime;
167 u64 sum_fluct;
168 u64 run_avg;
169 u64 all_runtime;
170 u64 all_count;
171 u64 cpu_last_switched[MAX_CPUS];
Josef Bacik2f80dd42015-05-22 09:18:40 -0400172 struct rb_root atom_root, sorted_atom_root, merged_atom_root;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300173 struct list_head sort_list, cmp_pid;
Yunlong Song939cda52015-03-31 21:46:34 +0800174 bool force;
Josef Bacik2f80dd42015-05-22 09:18:40 -0400175 bool skip_merge;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300176};
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200177
178static u64 get_nsecs(void)
179{
180 struct timespec ts;
181
182 clock_gettime(CLOCK_MONOTONIC, &ts);
183
184 return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
185}
186
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300187static void burn_nsecs(struct perf_sched *sched, u64 nsecs)
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200188{
189 u64 T0 = get_nsecs(), T1;
190
191 do {
192 T1 = get_nsecs();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300193 } while (T1 + sched->run_measurement_overhead < T0 + nsecs);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200194}
195
196static void sleep_nsecs(u64 nsecs)
197{
198 struct timespec ts;
199
200 ts.tv_nsec = nsecs % 999999999;
201 ts.tv_sec = nsecs / 999999999;
202
203 nanosleep(&ts, NULL);
204}
205
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300206static void calibrate_run_measurement_overhead(struct perf_sched *sched)
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200207{
208 u64 T0, T1, delta, min_delta = 1000000000ULL;
209 int i;
210
211 for (i = 0; i < 10; i++) {
212 T0 = get_nsecs();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300213 burn_nsecs(sched, 0);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200214 T1 = get_nsecs();
215 delta = T1-T0;
216 min_delta = min(min_delta, delta);
217 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300218 sched->run_measurement_overhead = min_delta;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200219
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200220 printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200221}
222
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300223static void calibrate_sleep_measurement_overhead(struct perf_sched *sched)
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200224{
225 u64 T0, T1, delta, min_delta = 1000000000ULL;
226 int i;
227
228 for (i = 0; i < 10; i++) {
229 T0 = get_nsecs();
230 sleep_nsecs(10000);
231 T1 = get_nsecs();
232 delta = T1-T0;
233 min_delta = min(min_delta, delta);
234 }
235 min_delta -= 10000;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300236 sched->sleep_measurement_overhead = min_delta;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200237
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200238 printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200239}
240
mingo39aeb522009-09-14 20:04:48 +0200241static struct sched_atom *
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200242get_new_event(struct task_desc *task, u64 timestamp)
Ingo Molnarec156762009-09-11 12:12:54 +0200243{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200244 struct sched_atom *event = zalloc(sizeof(*event));
Ingo Molnarec156762009-09-11 12:12:54 +0200245 unsigned long idx = task->nr_events;
246 size_t size;
247
248 event->timestamp = timestamp;
249 event->nr = idx;
250
251 task->nr_events++;
mingo39aeb522009-09-14 20:04:48 +0200252 size = sizeof(struct sched_atom *) * task->nr_events;
253 task->atoms = realloc(task->atoms, size);
254 BUG_ON(!task->atoms);
Ingo Molnarec156762009-09-11 12:12:54 +0200255
mingo39aeb522009-09-14 20:04:48 +0200256 task->atoms[idx] = event;
Ingo Molnarec156762009-09-11 12:12:54 +0200257
258 return event;
259}
260
mingo39aeb522009-09-14 20:04:48 +0200261static struct sched_atom *last_event(struct task_desc *task)
Ingo Molnarec156762009-09-11 12:12:54 +0200262{
263 if (!task->nr_events)
264 return NULL;
265
mingo39aeb522009-09-14 20:04:48 +0200266 return task->atoms[task->nr_events - 1];
Ingo Molnarec156762009-09-11 12:12:54 +0200267}
268
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300269static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task,
270 u64 timestamp, u64 duration)
Ingo Molnarec156762009-09-11 12:12:54 +0200271{
mingo39aeb522009-09-14 20:04:48 +0200272 struct sched_atom *event, *curr_event = last_event(task);
Ingo Molnarec156762009-09-11 12:12:54 +0200273
274 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200275 * optimize an existing RUN event by merging this one
276 * to it:
277 */
Ingo Molnarec156762009-09-11 12:12:54 +0200278 if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300279 sched->nr_run_events_optimized++;
Ingo Molnarec156762009-09-11 12:12:54 +0200280 curr_event->duration += duration;
281 return;
282 }
283
284 event = get_new_event(task, timestamp);
285
286 event->type = SCHED_EVENT_RUN;
287 event->duration = duration;
288
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300289 sched->nr_run_events++;
Ingo Molnarec156762009-09-11 12:12:54 +0200290}
291
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300292static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task,
293 u64 timestamp, struct task_desc *wakee)
Ingo Molnarec156762009-09-11 12:12:54 +0200294{
mingo39aeb522009-09-14 20:04:48 +0200295 struct sched_atom *event, *wakee_event;
Ingo Molnarec156762009-09-11 12:12:54 +0200296
297 event = get_new_event(task, timestamp);
298 event->type = SCHED_EVENT_WAKEUP;
299 event->wakee = wakee;
300
301 wakee_event = last_event(wakee);
302 if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300303 sched->targetless_wakeups++;
Ingo Molnarec156762009-09-11 12:12:54 +0200304 return;
305 }
306 if (wakee_event->wait_sem) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300307 sched->multitarget_wakeups++;
Ingo Molnarec156762009-09-11 12:12:54 +0200308 return;
309 }
310
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200311 wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem));
Ingo Molnarec156762009-09-11 12:12:54 +0200312 sem_init(wakee_event->wait_sem, 0, 0);
313 wakee_event->specific_wait = 1;
314 event->wait_sem = wakee_event->wait_sem;
315
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300316 sched->nr_wakeup_events++;
Ingo Molnarec156762009-09-11 12:12:54 +0200317}
318
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300319static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task,
320 u64 timestamp, u64 task_state __maybe_unused)
Ingo Molnarec156762009-09-11 12:12:54 +0200321{
mingo39aeb522009-09-14 20:04:48 +0200322 struct sched_atom *event = get_new_event(task, timestamp);
Ingo Molnarec156762009-09-11 12:12:54 +0200323
324 event->type = SCHED_EVENT_SLEEP;
325
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300326 sched->nr_sleep_events++;
Ingo Molnarec156762009-09-11 12:12:54 +0200327}
328
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300329static struct task_desc *register_pid(struct perf_sched *sched,
330 unsigned long pid, const char *comm)
Ingo Molnarec156762009-09-11 12:12:54 +0200331{
332 struct task_desc *task;
Yunlong Songcb06ac22015-03-31 21:46:30 +0800333 static int pid_max;
Ingo Molnarec156762009-09-11 12:12:54 +0200334
Yunlong Songcb06ac22015-03-31 21:46:30 +0800335 if (sched->pid_to_task == NULL) {
336 if (sysctl__read_int("kernel/pid_max", &pid_max) < 0)
337 pid_max = MAX_PID;
338 BUG_ON((sched->pid_to_task = calloc(pid_max, sizeof(struct task_desc *))) == NULL);
339 }
Yunlong Song3a423a52015-03-31 21:46:31 +0800340 if (pid >= (unsigned long)pid_max) {
341 BUG_ON((sched->pid_to_task = realloc(sched->pid_to_task, (pid + 1) *
342 sizeof(struct task_desc *))) == NULL);
343 while (pid >= (unsigned long)pid_max)
344 sched->pid_to_task[pid_max++] = NULL;
345 }
Ingo Molnarec156762009-09-11 12:12:54 +0200346
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300347 task = sched->pid_to_task[pid];
Ingo Molnarec156762009-09-11 12:12:54 +0200348
349 if (task)
350 return task;
351
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200352 task = zalloc(sizeof(*task));
Ingo Molnarec156762009-09-11 12:12:54 +0200353 task->pid = pid;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300354 task->nr = sched->nr_tasks;
Ingo Molnarec156762009-09-11 12:12:54 +0200355 strcpy(task->comm, comm);
356 /*
357 * every task starts in sleeping state - this gets ignored
358 * if there's no wakeup pointing to this sleep state:
359 */
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300360 add_sched_event_sleep(sched, task, 0, 0);
Ingo Molnarec156762009-09-11 12:12:54 +0200361
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300362 sched->pid_to_task[pid] = task;
363 sched->nr_tasks++;
Yunlong Song0755bc42015-03-31 21:46:28 +0800364 sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_desc *));
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300365 BUG_ON(!sched->tasks);
366 sched->tasks[task->nr] = task;
Ingo Molnarec156762009-09-11 12:12:54 +0200367
Ingo Molnarad236fd2009-09-11 12:12:54 +0200368 if (verbose)
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300369 printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm);
Ingo Molnarec156762009-09-11 12:12:54 +0200370
371 return task;
372}
373
374
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300375static void print_task_traces(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200376{
377 struct task_desc *task;
378 unsigned long i;
379
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300380 for (i = 0; i < sched->nr_tasks; i++) {
381 task = sched->tasks[i];
Ingo Molnarad236fd2009-09-11 12:12:54 +0200382 printf("task %6ld (%20s:%10ld), nr_events: %ld\n",
Ingo Molnarec156762009-09-11 12:12:54 +0200383 task->nr, task->comm, task->pid, task->nr_events);
384 }
385}
386
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300387static void add_cross_task_wakeups(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200388{
389 struct task_desc *task1, *task2;
390 unsigned long i, j;
391
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300392 for (i = 0; i < sched->nr_tasks; i++) {
393 task1 = sched->tasks[i];
Ingo Molnarec156762009-09-11 12:12:54 +0200394 j = i + 1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300395 if (j == sched->nr_tasks)
Ingo Molnarec156762009-09-11 12:12:54 +0200396 j = 0;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300397 task2 = sched->tasks[j];
398 add_sched_event_wakeup(sched, task1, 0, task2);
Ingo Molnarec156762009-09-11 12:12:54 +0200399 }
400}
401
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300402static void perf_sched__process_event(struct perf_sched *sched,
403 struct sched_atom *atom)
Ingo Molnarec156762009-09-11 12:12:54 +0200404{
405 int ret = 0;
Ingo Molnarec156762009-09-11 12:12:54 +0200406
mingo39aeb522009-09-14 20:04:48 +0200407 switch (atom->type) {
Ingo Molnarec156762009-09-11 12:12:54 +0200408 case SCHED_EVENT_RUN:
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300409 burn_nsecs(sched, atom->duration);
Ingo Molnarec156762009-09-11 12:12:54 +0200410 break;
411 case SCHED_EVENT_SLEEP:
mingo39aeb522009-09-14 20:04:48 +0200412 if (atom->wait_sem)
413 ret = sem_wait(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200414 BUG_ON(ret);
415 break;
416 case SCHED_EVENT_WAKEUP:
mingo39aeb522009-09-14 20:04:48 +0200417 if (atom->wait_sem)
418 ret = sem_post(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200419 BUG_ON(ret);
420 break;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200421 case SCHED_EVENT_MIGRATION:
422 break;
Ingo Molnarec156762009-09-11 12:12:54 +0200423 default:
424 BUG_ON(1);
425 }
426}
427
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200428static u64 get_cpu_usage_nsec_parent(void)
Ingo Molnarec156762009-09-11 12:12:54 +0200429{
430 struct rusage ru;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200431 u64 sum;
Ingo Molnarec156762009-09-11 12:12:54 +0200432 int err;
433
434 err = getrusage(RUSAGE_SELF, &ru);
435 BUG_ON(err);
436
437 sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3;
438 sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3;
439
440 return sum;
441}
442
Yunlong Song939cda52015-03-31 21:46:34 +0800443static int self_open_counters(struct perf_sched *sched, unsigned long cur_task)
Ingo Molnarec156762009-09-11 12:12:54 +0200444{
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800445 struct perf_event_attr attr;
Yunlong Song939cda52015-03-31 21:46:34 +0800446 char sbuf[STRERR_BUFSIZE], info[STRERR_BUFSIZE];
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800447 int fd;
Yunlong Song939cda52015-03-31 21:46:34 +0800448 struct rlimit limit;
449 bool need_privilege = false;
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800450
451 memset(&attr, 0, sizeof(attr));
452
453 attr.type = PERF_TYPE_SOFTWARE;
454 attr.config = PERF_COUNT_SW_TASK_CLOCK;
455
Yunlong Song939cda52015-03-31 21:46:34 +0800456force_again:
Yann Droneaud57480d22014-06-30 22:28:47 +0200457 fd = sys_perf_event_open(&attr, 0, -1, -1,
458 perf_event_open_cloexec_flag());
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800459
Yunlong Song1aff59b2015-03-31 21:46:33 +0800460 if (fd < 0) {
Yunlong Song939cda52015-03-31 21:46:34 +0800461 if (errno == EMFILE) {
462 if (sched->force) {
463 BUG_ON(getrlimit(RLIMIT_NOFILE, &limit) == -1);
464 limit.rlim_cur += sched->nr_tasks - cur_task;
465 if (limit.rlim_cur > limit.rlim_max) {
466 limit.rlim_max = limit.rlim_cur;
467 need_privilege = true;
468 }
469 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
470 if (need_privilege && errno == EPERM)
471 strcpy(info, "Need privilege\n");
472 } else
473 goto force_again;
474 } else
475 strcpy(info, "Have a try with -f option\n");
476 }
Namhyung Kim60b7d142012-09-12 11:11:06 +0900477 pr_err("Error: sys_perf_event_open() syscall returned "
Yunlong Song939cda52015-03-31 21:46:34 +0800478 "with %d (%s)\n%s", fd,
479 strerror_r(errno, sbuf, sizeof(sbuf)), info);
Yunlong Song1aff59b2015-03-31 21:46:33 +0800480 exit(EXIT_FAILURE);
481 }
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800482 return fd;
483}
484
485static u64 get_cpu_usage_nsec_self(int fd)
486{
487 u64 runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200488 int ret;
489
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800490 ret = read(fd, &runtime, sizeof(runtime));
491 BUG_ON(ret != sizeof(runtime));
Ingo Molnarec156762009-09-11 12:12:54 +0200492
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800493 return runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200494}
495
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300496struct sched_thread_parms {
497 struct task_desc *task;
498 struct perf_sched *sched;
Yunlong Song08097ab2015-03-31 21:46:32 +0800499 int fd;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300500};
501
Ingo Molnarec156762009-09-11 12:12:54 +0200502static void *thread_func(void *ctx)
503{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300504 struct sched_thread_parms *parms = ctx;
505 struct task_desc *this_task = parms->task;
506 struct perf_sched *sched = parms->sched;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200507 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200508 unsigned long i, ret;
509 char comm2[22];
Yunlong Song08097ab2015-03-31 21:46:32 +0800510 int fd = parms->fd;
Ingo Molnarec156762009-09-11 12:12:54 +0200511
Arnaldo Carvalho de Melo74cf2492013-12-27 16:55:14 -0300512 zfree(&parms);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300513
Ingo Molnarec156762009-09-11 12:12:54 +0200514 sprintf(comm2, ":%s", this_task->comm);
515 prctl(PR_SET_NAME, comm2);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300516 if (fd < 0)
517 return NULL;
Ingo Molnarec156762009-09-11 12:12:54 +0200518again:
519 ret = sem_post(&this_task->ready_for_work);
520 BUG_ON(ret);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300521 ret = pthread_mutex_lock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200522 BUG_ON(ret);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300523 ret = pthread_mutex_unlock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200524 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200525
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800526 cpu_usage_0 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200527
528 for (i = 0; i < this_task->nr_events; i++) {
529 this_task->curr_event = i;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300530 perf_sched__process_event(sched, this_task->atoms[i]);
Ingo Molnarec156762009-09-11 12:12:54 +0200531 }
532
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800533 cpu_usage_1 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200534 this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
Ingo Molnarec156762009-09-11 12:12:54 +0200535 ret = sem_post(&this_task->work_done_sem);
536 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200537
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300538 ret = pthread_mutex_lock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200539 BUG_ON(ret);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300540 ret = pthread_mutex_unlock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200541 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200542
543 goto again;
544}
545
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300546static void create_tasks(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200547{
548 struct task_desc *task;
549 pthread_attr_t attr;
550 unsigned long i;
551 int err;
552
553 err = pthread_attr_init(&attr);
554 BUG_ON(err);
Jiri Pirko12f7e032011-01-10 14:14:23 -0200555 err = pthread_attr_setstacksize(&attr,
556 (size_t) max(16 * 1024, PTHREAD_STACK_MIN));
Ingo Molnarec156762009-09-11 12:12:54 +0200557 BUG_ON(err);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300558 err = pthread_mutex_lock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200559 BUG_ON(err);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300560 err = pthread_mutex_lock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200561 BUG_ON(err);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300562 for (i = 0; i < sched->nr_tasks; i++) {
563 struct sched_thread_parms *parms = malloc(sizeof(*parms));
564 BUG_ON(parms == NULL);
565 parms->task = task = sched->tasks[i];
566 parms->sched = sched;
Yunlong Song939cda52015-03-31 21:46:34 +0800567 parms->fd = self_open_counters(sched, i);
Ingo Molnarec156762009-09-11 12:12:54 +0200568 sem_init(&task->sleep_sem, 0, 0);
569 sem_init(&task->ready_for_work, 0, 0);
570 sem_init(&task->work_done_sem, 0, 0);
571 task->curr_event = 0;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300572 err = pthread_create(&task->thread, &attr, thread_func, parms);
Ingo Molnarec156762009-09-11 12:12:54 +0200573 BUG_ON(err);
574 }
575}
576
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300577static void wait_for_tasks(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200578{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200579 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200580 struct task_desc *task;
581 unsigned long i, ret;
582
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300583 sched->start_time = get_nsecs();
584 sched->cpu_usage = 0;
585 pthread_mutex_unlock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200586
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300587 for (i = 0; i < sched->nr_tasks; i++) {
588 task = sched->tasks[i];
Ingo Molnarec156762009-09-11 12:12:54 +0200589 ret = sem_wait(&task->ready_for_work);
590 BUG_ON(ret);
591 sem_init(&task->ready_for_work, 0, 0);
592 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300593 ret = pthread_mutex_lock(&sched->work_done_wait_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200594 BUG_ON(ret);
595
596 cpu_usage_0 = get_cpu_usage_nsec_parent();
597
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300598 pthread_mutex_unlock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200599
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300600 for (i = 0; i < sched->nr_tasks; i++) {
601 task = sched->tasks[i];
Ingo Molnarec156762009-09-11 12:12:54 +0200602 ret = sem_wait(&task->work_done_sem);
603 BUG_ON(ret);
604 sem_init(&task->work_done_sem, 0, 0);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300605 sched->cpu_usage += task->cpu_usage;
Ingo Molnarec156762009-09-11 12:12:54 +0200606 task->cpu_usage = 0;
607 }
608
609 cpu_usage_1 = get_cpu_usage_nsec_parent();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300610 if (!sched->runavg_cpu_usage)
611 sched->runavg_cpu_usage = sched->cpu_usage;
Yunlong Songff5f3bb2015-03-31 21:46:36 +0800612 sched->runavg_cpu_usage = (sched->runavg_cpu_usage * (sched->replay_repeat - 1) + sched->cpu_usage) / sched->replay_repeat;
Ingo Molnarec156762009-09-11 12:12:54 +0200613
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300614 sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0;
615 if (!sched->runavg_parent_cpu_usage)
616 sched->runavg_parent_cpu_usage = sched->parent_cpu_usage;
Yunlong Songff5f3bb2015-03-31 21:46:36 +0800617 sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * (sched->replay_repeat - 1) +
618 sched->parent_cpu_usage)/sched->replay_repeat;
Ingo Molnarec156762009-09-11 12:12:54 +0200619
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300620 ret = pthread_mutex_lock(&sched->start_work_mutex);
Ingo Molnarec156762009-09-11 12:12:54 +0200621 BUG_ON(ret);
622
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300623 for (i = 0; i < sched->nr_tasks; i++) {
624 task = sched->tasks[i];
Ingo Molnarec156762009-09-11 12:12:54 +0200625 sem_init(&task->sleep_sem, 0, 0);
626 task->curr_event = 0;
627 }
628}
629
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300630static void run_one_test(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200631{
Kyle McMartinfb7d0b32011-01-24 11:13:04 -0500632 u64 T0, T1, delta, avg_delta, fluct;
Ingo Molnarec156762009-09-11 12:12:54 +0200633
634 T0 = get_nsecs();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300635 wait_for_tasks(sched);
Ingo Molnarec156762009-09-11 12:12:54 +0200636 T1 = get_nsecs();
637
638 delta = T1 - T0;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300639 sched->sum_runtime += delta;
640 sched->nr_runs++;
Ingo Molnarec156762009-09-11 12:12:54 +0200641
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300642 avg_delta = sched->sum_runtime / sched->nr_runs;
Ingo Molnarec156762009-09-11 12:12:54 +0200643 if (delta < avg_delta)
644 fluct = avg_delta - delta;
645 else
646 fluct = delta - avg_delta;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300647 sched->sum_fluct += fluct;
648 if (!sched->run_avg)
649 sched->run_avg = delta;
Yunlong Songff5f3bb2015-03-31 21:46:36 +0800650 sched->run_avg = (sched->run_avg * (sched->replay_repeat - 1) + delta) / sched->replay_repeat;
Ingo Molnarec156762009-09-11 12:12:54 +0200651
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300652 printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / 1000000.0);
Ingo Molnarec156762009-09-11 12:12:54 +0200653
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300654 printf("ravg: %0.2f, ", (double)sched->run_avg / 1e6);
Ingo Molnarec156762009-09-11 12:12:54 +0200655
Ingo Molnarad236fd2009-09-11 12:12:54 +0200656 printf("cpu: %0.2f / %0.2f",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300657 (double)sched->cpu_usage / 1e6, (double)sched->runavg_cpu_usage / 1e6);
Ingo Molnarec156762009-09-11 12:12:54 +0200658
659#if 0
660 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200661 * rusage statistics done by the parent, these are less
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300662 * accurate than the sched->sum_exec_runtime based statistics:
Ingo Molnarfbf94822009-09-11 12:12:54 +0200663 */
Ingo Molnarad236fd2009-09-11 12:12:54 +0200664 printf(" [%0.2f / %0.2f]",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300665 (double)sched->parent_cpu_usage/1e6,
666 (double)sched->runavg_parent_cpu_usage/1e6);
Ingo Molnarec156762009-09-11 12:12:54 +0200667#endif
668
Ingo Molnarad236fd2009-09-11 12:12:54 +0200669 printf("\n");
Ingo Molnarec156762009-09-11 12:12:54 +0200670
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300671 if (sched->nr_sleep_corrections)
672 printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections);
673 sched->nr_sleep_corrections = 0;
Ingo Molnarec156762009-09-11 12:12:54 +0200674}
675
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300676static void test_calibrations(struct perf_sched *sched)
Ingo Molnarec156762009-09-11 12:12:54 +0200677{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200678 u64 T0, T1;
Ingo Molnarec156762009-09-11 12:12:54 +0200679
680 T0 = get_nsecs();
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300681 burn_nsecs(sched, 1e6);
Ingo Molnarec156762009-09-11 12:12:54 +0200682 T1 = get_nsecs();
683
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200684 printf("the run test took %" PRIu64 " nsecs\n", T1 - T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200685
686 T0 = get_nsecs();
687 sleep_nsecs(1e6);
688 T1 = get_nsecs();
689
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200690 printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200691}
692
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300693static int
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300694replay_wakeup_event(struct perf_sched *sched,
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300695 struct perf_evsel *evsel, struct perf_sample *sample,
696 struct machine *machine __maybe_unused)
Ingo Molnarec156762009-09-11 12:12:54 +0200697{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300698 const char *comm = perf_evsel__strval(evsel, sample, "comm");
699 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200700 struct task_desc *waker, *wakee;
701
702 if (verbose) {
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -0300703 printf("sched_wakeup event %p\n", evsel);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200704
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300705 printf(" ... pid %d woke up %s/%d\n", sample->tid, comm, pid);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200706 }
707
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -0300708 waker = register_pid(sched, sample->tid, "<unknown>");
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300709 wakee = register_pid(sched, pid, comm);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200710
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300711 add_sched_event_wakeup(sched, waker, sample->time, wakee);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300712 return 0;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200713}
714
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300715static int replay_switch_event(struct perf_sched *sched,
716 struct perf_evsel *evsel,
717 struct perf_sample *sample,
718 struct machine *machine __maybe_unused)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200719{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300720 const char *prev_comm = perf_evsel__strval(evsel, sample, "prev_comm"),
721 *next_comm = perf_evsel__strval(evsel, sample, "next_comm");
722 const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
723 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
724 const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state");
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300725 struct task_desc *prev, __maybe_unused *next;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -0300726 u64 timestamp0, timestamp = sample->time;
727 int cpu = sample->cpu;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200728 s64 delta;
729
Ingo Molnarad236fd2009-09-11 12:12:54 +0200730 if (verbose)
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -0300731 printf("sched_switch event %p\n", evsel);
Ingo Molnarad236fd2009-09-11 12:12:54 +0200732
Ingo Molnarfbf94822009-09-11 12:12:54 +0200733 if (cpu >= MAX_CPUS || cpu < 0)
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300734 return 0;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200735
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300736 timestamp0 = sched->cpu_last_switched[cpu];
Ingo Molnarfbf94822009-09-11 12:12:54 +0200737 if (timestamp0)
738 delta = timestamp - timestamp0;
739 else
740 delta = 0;
741
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300742 if (delta < 0) {
Namhyung Kim60b7d142012-09-12 11:11:06 +0900743 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300744 return -1;
745 }
Ingo Molnarfbf94822009-09-11 12:12:54 +0200746
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300747 pr_debug(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n",
748 prev_comm, prev_pid, next_comm, next_pid, delta);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200749
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300750 prev = register_pid(sched, prev_pid, prev_comm);
751 next = register_pid(sched, next_pid, next_comm);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200752
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300753 sched->cpu_last_switched[cpu] = timestamp;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200754
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300755 add_sched_event_run(sched, prev, timestamp, delta);
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300756 add_sched_event_sleep(sched, prev, timestamp, prev_state);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300757
758 return 0;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200759}
760
David Aherncb627502013-08-07 22:50:47 -0400761static int replay_fork_event(struct perf_sched *sched,
762 union perf_event *event,
763 struct machine *machine)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200764{
David Aherncb627502013-08-07 22:50:47 -0400765 struct thread *child, *parent;
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300766
Adrian Hunter314add62013-08-27 11:23:03 +0300767 child = machine__findnew_thread(machine, event->fork.pid,
768 event->fork.tid);
769 parent = machine__findnew_thread(machine, event->fork.ppid,
770 event->fork.ptid);
David Aherncb627502013-08-07 22:50:47 -0400771
772 if (child == NULL || parent == NULL) {
773 pr_debug("thread does not exist on fork event: child %p, parent %p\n",
774 child, parent);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300775 goto out_put;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200776 }
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300777
David Aherncb627502013-08-07 22:50:47 -0400778 if (verbose) {
779 printf("fork event\n");
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +0200780 printf("... parent: %s/%d\n", thread__comm_str(parent), parent->tid);
781 printf("... child: %s/%d\n", thread__comm_str(child), child->tid);
David Aherncb627502013-08-07 22:50:47 -0400782 }
783
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +0200784 register_pid(sched, parent->tid, thread__comm_str(parent));
785 register_pid(sched, child->tid, thread__comm_str(child));
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300786out_put:
787 thread__put(child);
788 thread__put(parent);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300789 return 0;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200790}
791
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200792struct sort_dimension {
793 const char *name;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200794 sort_fn_t cmp;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200795 struct list_head list;
796};
797
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200798static int
mingo39aeb522009-09-14 20:04:48 +0200799thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200800{
801 struct sort_dimension *sort;
802 int ret = 0;
803
Ingo Molnarb5fae122009-09-11 12:12:54 +0200804 BUG_ON(list_empty(list));
805
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200806 list_for_each_entry(sort, list, list) {
807 ret = sort->cmp(l, r);
808 if (ret)
809 return ret;
810 }
811
812 return ret;
813}
814
mingo39aeb522009-09-14 20:04:48 +0200815static struct work_atoms *
Ingo Molnarb5fae122009-09-11 12:12:54 +0200816thread_atoms_search(struct rb_root *root, struct thread *thread,
817 struct list_head *sort_list)
818{
819 struct rb_node *node = root->rb_node;
mingo39aeb522009-09-14 20:04:48 +0200820 struct work_atoms key = { .thread = thread };
Ingo Molnarb5fae122009-09-11 12:12:54 +0200821
822 while (node) {
mingo39aeb522009-09-14 20:04:48 +0200823 struct work_atoms *atoms;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200824 int cmp;
825
mingo39aeb522009-09-14 20:04:48 +0200826 atoms = container_of(node, struct work_atoms, node);
Ingo Molnarb5fae122009-09-11 12:12:54 +0200827
828 cmp = thread_lat_cmp(sort_list, &key, atoms);
829 if (cmp > 0)
830 node = node->rb_left;
831 else if (cmp < 0)
832 node = node->rb_right;
833 else {
834 BUG_ON(thread != atoms->thread);
835 return atoms;
836 }
837 }
838 return NULL;
839}
840
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200841static void
mingo39aeb522009-09-14 20:04:48 +0200842__thread_latency_insert(struct rb_root *root, struct work_atoms *data,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200843 struct list_head *sort_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200844{
845 struct rb_node **new = &(root->rb_node), *parent = NULL;
846
847 while (*new) {
mingo39aeb522009-09-14 20:04:48 +0200848 struct work_atoms *this;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200849 int cmp;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200850
mingo39aeb522009-09-14 20:04:48 +0200851 this = container_of(*new, struct work_atoms, node);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200852 parent = *new;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200853
854 cmp = thread_lat_cmp(sort_list, data, this);
855
856 if (cmp > 0)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200857 new = &((*new)->rb_left);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200858 else
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200859 new = &((*new)->rb_right);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200860 }
861
862 rb_link_node(&data->node, parent, new);
863 rb_insert_color(&data->node, root);
864}
865
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300866static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200867{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200868 struct work_atoms *atoms = zalloc(sizeof(*atoms));
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300869 if (!atoms) {
870 pr_err("No memory at %s\n", __func__);
871 return -1;
872 }
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200873
Arnaldo Carvalho de Melof3b623b2015-03-02 22:21:35 -0300874 atoms->thread = thread__get(thread);
mingo39aeb522009-09-14 20:04:48 +0200875 INIT_LIST_HEAD(&atoms->work_list);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300876 __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300877 return 0;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200878}
879
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300880static char sched_out_state(u64 prev_state)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200881{
882 const char *str = TASK_STATE_TO_CHAR_STR;
883
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300884 return str[prev_state];
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200885}
886
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300887static int
mingo39aeb522009-09-14 20:04:48 +0200888add_sched_out_event(struct work_atoms *atoms,
889 char run_state,
890 u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200891{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200892 struct work_atom *atom = zalloc(sizeof(*atom));
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300893 if (!atom) {
894 pr_err("Non memory at %s", __func__);
895 return -1;
896 }
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200897
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200898 atom->sched_out_time = timestamp;
899
mingo39aeb522009-09-14 20:04:48 +0200900 if (run_state == 'R') {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200901 atom->state = THREAD_WAIT_CPU;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200902 atom->wake_up_time = atom->sched_out_time;
Frederic Weisbeckerc6ced612009-09-13 00:46:19 +0200903 }
904
mingo39aeb522009-09-14 20:04:48 +0200905 list_add_tail(&atom->list, &atoms->work_list);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300906 return 0;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200907}
908
909static void
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300910add_runtime_event(struct work_atoms *atoms, u64 delta,
911 u64 timestamp __maybe_unused)
mingo39aeb522009-09-14 20:04:48 +0200912{
913 struct work_atom *atom;
914
915 BUG_ON(list_empty(&atoms->work_list));
916
917 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
918
919 atom->runtime += delta;
920 atoms->total_runtime += delta;
921}
922
923static void
924add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200925{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200926 struct work_atom *atom;
Frederic Weisbecker66685672009-09-13 01:56:25 +0200927 u64 delta;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200928
mingo39aeb522009-09-14 20:04:48 +0200929 if (list_empty(&atoms->work_list))
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200930 return;
931
mingo39aeb522009-09-14 20:04:48 +0200932 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200933
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200934 if (atom->state != THREAD_WAIT_CPU)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200935 return;
936
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200937 if (timestamp < atom->wake_up_time) {
938 atom->state = THREAD_IGNORE;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200939 return;
940 }
941
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200942 atom->state = THREAD_SCHED_IN;
943 atom->sched_in_time = timestamp;
Frederic Weisbecker66685672009-09-13 01:56:25 +0200944
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200945 delta = atom->sched_in_time - atom->wake_up_time;
Frederic Weisbecker66685672009-09-13 01:56:25 +0200946 atoms->total_lat += delta;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +0100947 if (delta > atoms->max_lat) {
Frederic Weisbecker66685672009-09-13 01:56:25 +0200948 atoms->max_lat = delta;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +0100949 atoms->max_lat_at = timestamp;
950 }
Frederic Weisbecker66685672009-09-13 01:56:25 +0200951 atoms->nb_atoms++;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200952}
953
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300954static int latency_switch_event(struct perf_sched *sched,
955 struct perf_evsel *evsel,
956 struct perf_sample *sample,
957 struct machine *machine)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200958{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300959 const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
960 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
961 const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state");
mingo39aeb522009-09-14 20:04:48 +0200962 struct work_atoms *out_events, *in_events;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200963 struct thread *sched_out, *sched_in;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -0300964 u64 timestamp0, timestamp = sample->time;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300965 int cpu = sample->cpu, err = -1;
Ingo Molnarea92ed52009-09-12 10:08:34 +0200966 s64 delta;
967
mingo39aeb522009-09-14 20:04:48 +0200968 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
Ingo Molnarea92ed52009-09-12 10:08:34 +0200969
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300970 timestamp0 = sched->cpu_last_switched[cpu];
971 sched->cpu_last_switched[cpu] = timestamp;
Ingo Molnarea92ed52009-09-12 10:08:34 +0200972 if (timestamp0)
973 delta = timestamp - timestamp0;
974 else
975 delta = 0;
976
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300977 if (delta < 0) {
978 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
979 return -1;
980 }
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200981
Adrian Hunter1fcb8762014-07-14 13:02:25 +0300982 sched_out = machine__findnew_thread(machine, -1, prev_pid);
983 sched_in = machine__findnew_thread(machine, -1, next_pid);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300984 if (sched_out == NULL || sched_in == NULL)
985 goto out_put;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200986
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300987 out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid);
mingo39aeb522009-09-14 20:04:48 +0200988 if (!out_events) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300989 if (thread_atoms_insert(sched, sched_out))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300990 goto out_put;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -0300991 out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300992 if (!out_events) {
993 pr_err("out-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300994 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300995 }
mingo39aeb522009-09-14 20:04:48 +0200996 }
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -0300997 if (add_sched_out_event(out_events, sched_out_state(prev_state), timestamp))
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -0300998 return -1;
mingo39aeb522009-09-14 20:04:48 +0200999
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001000 in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid);
mingo39aeb522009-09-14 20:04:48 +02001001 if (!in_events) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001002 if (thread_atoms_insert(sched, sched_in))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001003 goto out_put;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001004 in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001005 if (!in_events) {
1006 pr_err("in-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001007 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001008 }
mingo39aeb522009-09-14 20:04:48 +02001009 /*
1010 * Take came in we have not heard about yet,
1011 * add in an initial atom in runnable state:
1012 */
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001013 if (add_sched_out_event(in_events, 'R', timestamp))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001014 goto out_put;
mingo39aeb522009-09-14 20:04:48 +02001015 }
1016 add_sched_in_event(in_events, timestamp);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001017 err = 0;
1018out_put:
1019 thread__put(sched_out);
1020 thread__put(sched_in);
1021 return err;
mingo39aeb522009-09-14 20:04:48 +02001022}
1023
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001024static int latency_runtime_event(struct perf_sched *sched,
1025 struct perf_evsel *evsel,
1026 struct perf_sample *sample,
1027 struct machine *machine)
mingo39aeb522009-09-14 20:04:48 +02001028{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001029 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
1030 const u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
Adrian Hunter1fcb8762014-07-14 13:02:25 +03001031 struct thread *thread = machine__findnew_thread(machine, -1, pid);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001032 struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid);
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001033 u64 timestamp = sample->time;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001034 int cpu = sample->cpu, err = -1;
1035
1036 if (thread == NULL)
1037 return -1;
mingo39aeb522009-09-14 20:04:48 +02001038
1039 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
mingo39aeb522009-09-14 20:04:48 +02001040 if (!atoms) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001041 if (thread_atoms_insert(sched, thread))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001042 goto out_put;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001043 atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001044 if (!atoms) {
Namhyung Kim60b7d142012-09-12 11:11:06 +09001045 pr_err("in-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001046 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001047 }
1048 if (add_sched_out_event(atoms, 'R', timestamp))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001049 goto out_put;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001050 }
1051
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001052 add_runtime_event(atoms, runtime, timestamp);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001053 err = 0;
1054out_put:
1055 thread__put(thread);
1056 return err;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001057}
1058
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001059static int latency_wakeup_event(struct perf_sched *sched,
1060 struct perf_evsel *evsel,
1061 struct perf_sample *sample,
1062 struct machine *machine)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001063{
Peter Zijlstra0680ee72014-05-12 20:19:46 +02001064 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
mingo39aeb522009-09-14 20:04:48 +02001065 struct work_atoms *atoms;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001066 struct work_atom *atom;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001067 struct thread *wakee;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001068 u64 timestamp = sample->time;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001069 int err = -1;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001070
Adrian Hunter1fcb8762014-07-14 13:02:25 +03001071 wakee = machine__findnew_thread(machine, -1, pid);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001072 if (wakee == NULL)
1073 return -1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001074 atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
Frederic Weisbecker17562202009-09-12 23:11:32 +02001075 if (!atoms) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001076 if (thread_atoms_insert(sched, wakee))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001077 goto out_put;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001078 atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001079 if (!atoms) {
Namhyung Kim60b7d142012-09-12 11:11:06 +09001080 pr_err("wakeup-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001081 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001082 }
1083 if (add_sched_out_event(atoms, 'S', timestamp))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001084 goto out_put;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001085 }
1086
mingo39aeb522009-09-14 20:04:48 +02001087 BUG_ON(list_empty(&atoms->work_list));
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001088
mingo39aeb522009-09-14 20:04:48 +02001089 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001090
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001091 /*
Dongsheng Yang67d62592014-05-13 10:38:21 +09001092 * As we do not guarantee the wakeup event happens when
1093 * task is out of run queue, also may happen when task is
1094 * on run queue and wakeup only change ->state to TASK_RUNNING,
1095 * then we should not set the ->wake_up_time when wake up a
1096 * task which is on run queue.
1097 *
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001098 * You WILL be missing events if you've recorded only
1099 * one CPU, or are only looking at only one, so don't
Dongsheng Yang67d62592014-05-13 10:38:21 +09001100 * skip in this case.
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001101 */
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001102 if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING)
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001103 goto out_ok;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001104
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001105 sched->nr_timestamps++;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001106 if (atom->sched_out_time > timestamp) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001107 sched->nr_unordered_timestamps++;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001108 goto out_ok;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001109 }
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001110
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001111 atom->state = THREAD_WAIT_CPU;
1112 atom->wake_up_time = timestamp;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001113out_ok:
1114 err = 0;
1115out_put:
1116 thread__put(wakee);
1117 return err;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001118}
1119
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001120static int latency_migrate_task_event(struct perf_sched *sched,
1121 struct perf_evsel *evsel,
1122 struct perf_sample *sample,
1123 struct machine *machine)
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001124{
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001125 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001126 u64 timestamp = sample->time;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001127 struct work_atoms *atoms;
1128 struct work_atom *atom;
1129 struct thread *migrant;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001130 int err = -1;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001131
1132 /*
1133 * Only need to worry about migration when profiling one CPU.
1134 */
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001135 if (sched->profile_cpu == -1)
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001136 return 0;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001137
Adrian Hunter1fcb8762014-07-14 13:02:25 +03001138 migrant = machine__findnew_thread(machine, -1, pid);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001139 if (migrant == NULL)
1140 return -1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001141 atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001142 if (!atoms) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001143 if (thread_atoms_insert(sched, migrant))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001144 goto out_put;
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +02001145 register_pid(sched, migrant->tid, thread__comm_str(migrant));
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001146 atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001147 if (!atoms) {
Namhyung Kim60b7d142012-09-12 11:11:06 +09001148 pr_err("migration-event: Internal tree error");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001149 goto out_put;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001150 }
1151 if (add_sched_out_event(atoms, 'R', timestamp))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001152 goto out_put;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001153 }
1154
1155 BUG_ON(list_empty(&atoms->work_list));
1156
1157 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
1158 atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp;
1159
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001160 sched->nr_timestamps++;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001161
1162 if (atom->sched_out_time > timestamp)
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001163 sched->nr_unordered_timestamps++;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001164 err = 0;
1165out_put:
1166 thread__put(migrant);
1167 return err;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001168}
1169
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001170static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001171{
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001172 int i;
1173 int ret;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001174 u64 avg;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001175
mingo39aeb522009-09-14 20:04:48 +02001176 if (!work_list->nb_atoms)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001177 return;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001178 /*
1179 * Ignore idle threads:
1180 */
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +02001181 if (!strcmp(thread__comm_str(work_list->thread), "swapper"))
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001182 return;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001183
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001184 sched->all_runtime += work_list->total_runtime;
1185 sched->all_count += work_list->nb_atoms;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001186
Josef Bacik2f80dd42015-05-22 09:18:40 -04001187 if (work_list->num_merged > 1)
1188 ret = printf(" %s:(%d) ", thread__comm_str(work_list->thread), work_list->num_merged);
1189 else
1190 ret = printf(" %s:%d ", thread__comm_str(work_list->thread), work_list->thread->tid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001191
mingo08f69e62009-09-14 18:30:44 +02001192 for (i = 0; i < 24 - ret; i++)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001193 printf(" ");
1194
mingo39aeb522009-09-14 20:04:48 +02001195 avg = work_list->total_lat / work_list->nb_atoms;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001196
Ramkumar Ramachandra80790e02014-03-17 10:18:21 -04001197 printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %13.6f s\n",
mingo39aeb522009-09-14 20:04:48 +02001198 (double)work_list->total_runtime / 1e6,
1199 work_list->nb_atoms, (double)avg / 1e6,
Frederic Weisbecker3786310a2009-12-09 21:40:08 +01001200 (double)work_list->max_lat / 1e6,
1201 (double)work_list->max_lat_at / 1e9);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001202}
1203
mingo39aeb522009-09-14 20:04:48 +02001204static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001205{
Adrian Hunter38051232013-07-04 16:20:31 +03001206 if (l->thread->tid < r->thread->tid)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001207 return -1;
Adrian Hunter38051232013-07-04 16:20:31 +03001208 if (l->thread->tid > r->thread->tid)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001209 return 1;
1210
1211 return 0;
1212}
1213
mingo39aeb522009-09-14 20:04:48 +02001214static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001215{
1216 u64 avgl, avgr;
1217
1218 if (!l->nb_atoms)
1219 return -1;
1220
1221 if (!r->nb_atoms)
1222 return 1;
1223
1224 avgl = l->total_lat / l->nb_atoms;
1225 avgr = r->total_lat / r->nb_atoms;
1226
1227 if (avgl < avgr)
1228 return -1;
1229 if (avgl > avgr)
1230 return 1;
1231
1232 return 0;
1233}
1234
mingo39aeb522009-09-14 20:04:48 +02001235static int max_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001236{
1237 if (l->max_lat < r->max_lat)
1238 return -1;
1239 if (l->max_lat > r->max_lat)
1240 return 1;
1241
1242 return 0;
1243}
1244
mingo39aeb522009-09-14 20:04:48 +02001245static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001246{
1247 if (l->nb_atoms < r->nb_atoms)
1248 return -1;
1249 if (l->nb_atoms > r->nb_atoms)
1250 return 1;
1251
1252 return 0;
1253}
1254
mingo39aeb522009-09-14 20:04:48 +02001255static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001256{
1257 if (l->total_runtime < r->total_runtime)
1258 return -1;
1259 if (l->total_runtime > r->total_runtime)
1260 return 1;
1261
1262 return 0;
1263}
1264
Randy Dunlapcbef79a2009-10-05 13:17:29 -07001265static int sort_dimension__add(const char *tok, struct list_head *list)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001266{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001267 size_t i;
1268 static struct sort_dimension avg_sort_dimension = {
1269 .name = "avg",
1270 .cmp = avg_cmp,
1271 };
1272 static struct sort_dimension max_sort_dimension = {
1273 .name = "max",
1274 .cmp = max_cmp,
1275 };
1276 static struct sort_dimension pid_sort_dimension = {
1277 .name = "pid",
1278 .cmp = pid_cmp,
1279 };
1280 static struct sort_dimension runtime_sort_dimension = {
1281 .name = "runtime",
1282 .cmp = runtime_cmp,
1283 };
1284 static struct sort_dimension switch_sort_dimension = {
1285 .name = "switch",
1286 .cmp = switch_cmp,
1287 };
1288 struct sort_dimension *available_sorts[] = {
1289 &pid_sort_dimension,
1290 &avg_sort_dimension,
1291 &max_sort_dimension,
1292 &switch_sort_dimension,
1293 &runtime_sort_dimension,
1294 };
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001295
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001296 for (i = 0; i < ARRAY_SIZE(available_sorts); i++) {
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001297 if (!strcmp(available_sorts[i]->name, tok)) {
1298 list_add_tail(&available_sorts[i]->list, list);
1299
1300 return 0;
1301 }
1302 }
1303
1304 return -1;
1305}
1306
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001307static void perf_sched__sort_lat(struct perf_sched *sched)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001308{
1309 struct rb_node *node;
Josef Bacik2f80dd42015-05-22 09:18:40 -04001310 struct rb_root *root = &sched->atom_root;
1311again:
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001312 for (;;) {
mingo39aeb522009-09-14 20:04:48 +02001313 struct work_atoms *data;
Josef Bacik2f80dd42015-05-22 09:18:40 -04001314 node = rb_first(root);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001315 if (!node)
1316 break;
1317
Josef Bacik2f80dd42015-05-22 09:18:40 -04001318 rb_erase(node, root);
mingo39aeb522009-09-14 20:04:48 +02001319 data = rb_entry(node, struct work_atoms, node);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001320 __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001321 }
Josef Bacik2f80dd42015-05-22 09:18:40 -04001322 if (root == &sched->atom_root) {
1323 root = &sched->merged_atom_root;
1324 goto again;
1325 }
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001326}
1327
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001328static int process_sched_wakeup_event(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001329 struct perf_evsel *evsel,
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001330 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001331 struct machine *machine)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001332{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001333 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001334
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001335 if (sched->tp_handler->wakeup_event)
1336 return sched->tp_handler->wakeup_event(sched, evsel, sample, machine);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001337
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001338 return 0;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001339}
1340
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001341static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
1342 struct perf_sample *sample, struct machine *machine)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001343{
Dongsheng Yang9d372ca2014-05-16 14:37:05 +09001344 const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
1345 struct thread *sched_in;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001346 int new_shortname;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001347 u64 timestamp0, timestamp = sample->time;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001348 s64 delta;
Arnaldo Carvalho de Melo7f7f8d02012-08-07 11:33:42 -03001349 int cpu, this_cpu = sample->cpu;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001350
1351 BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0);
1352
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001353 if (this_cpu > sched->max_cpu)
1354 sched->max_cpu = this_cpu;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001355
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001356 timestamp0 = sched->cpu_last_switched[this_cpu];
1357 sched->cpu_last_switched[this_cpu] = timestamp;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001358 if (timestamp0)
1359 delta = timestamp - timestamp0;
1360 else
1361 delta = 0;
1362
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001363 if (delta < 0) {
Namhyung Kim60b7d142012-09-12 11:11:06 +09001364 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001365 return -1;
1366 }
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001367
Adrian Hunter1fcb8762014-07-14 13:02:25 +03001368 sched_in = machine__findnew_thread(machine, -1, next_pid);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001369 if (sched_in == NULL)
1370 return -1;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001371
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001372 sched->curr_thread[this_cpu] = thread__get(sched_in);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001373
1374 printf(" ");
1375
1376 new_shortname = 0;
1377 if (!sched_in->shortname[0]) {
Dongsheng6bcab4e2014-05-06 14:39:01 +09001378 if (!strcmp(thread__comm_str(sched_in), "swapper")) {
1379 /*
1380 * Don't allocate a letter-number for swapper:0
1381 * as a shortname. Instead, we use '.' for it.
1382 */
1383 sched_in->shortname[0] = '.';
1384 sched_in->shortname[1] = ' ';
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001385 } else {
Dongsheng6bcab4e2014-05-06 14:39:01 +09001386 sched_in->shortname[0] = sched->next_shortname1;
1387 sched_in->shortname[1] = sched->next_shortname2;
1388
1389 if (sched->next_shortname1 < 'Z') {
1390 sched->next_shortname1++;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001391 } else {
Dongsheng6bcab4e2014-05-06 14:39:01 +09001392 sched->next_shortname1 = 'A';
1393 if (sched->next_shortname2 < '9')
1394 sched->next_shortname2++;
1395 else
1396 sched->next_shortname2 = '0';
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001397 }
1398 }
1399 new_shortname = 1;
1400 }
1401
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001402 for (cpu = 0; cpu <= sched->max_cpu; cpu++) {
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001403 if (cpu != this_cpu)
1404 printf(" ");
1405 else
1406 printf("*");
1407
Dongsheng6bcab4e2014-05-06 14:39:01 +09001408 if (sched->curr_thread[cpu])
1409 printf("%2s ", sched->curr_thread[cpu]->shortname);
1410 else
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001411 printf(" ");
1412 }
1413
1414 printf(" %12.6f secs ", (double)timestamp/1e9);
1415 if (new_shortname) {
1416 printf("%s => %s:%d\n",
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +02001417 sched_in->shortname, thread__comm_str(sched_in), sched_in->tid);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001418 } else {
1419 printf("\n");
1420 }
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001421
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -03001422 thread__put(sched_in);
1423
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001424 return 0;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001425}
1426
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001427static int process_sched_switch_event(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001428 struct perf_evsel *evsel,
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001429 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001430 struct machine *machine)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001431{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001432 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001433 int this_cpu = sample->cpu, err = 0;
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001434 u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
1435 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001436
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001437 if (sched->curr_pid[this_cpu] != (u32)-1) {
Ingo Molnarc8a37752009-09-16 14:07:00 +02001438 /*
1439 * Are we trying to switch away a PID that is
1440 * not current?
1441 */
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001442 if (sched->curr_pid[this_cpu] != prev_pid)
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001443 sched->nr_context_switch_bugs++;
Ingo Molnarc8a37752009-09-16 14:07:00 +02001444 }
Ingo Molnarc8a37752009-09-16 14:07:00 +02001445
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001446 if (sched->tp_handler->switch_event)
1447 err = sched->tp_handler->switch_event(sched, evsel, sample, machine);
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001448
1449 sched->curr_pid[this_cpu] = next_pid;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001450 return err;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001451}
1452
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001453static int process_sched_runtime_event(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001454 struct perf_evsel *evsel,
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001455 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001456 struct machine *machine)
mingo39aeb522009-09-14 20:04:48 +02001457{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001458 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
mingo39aeb522009-09-14 20:04:48 +02001459
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001460 if (sched->tp_handler->runtime_event)
1461 return sched->tp_handler->runtime_event(sched, evsel, sample, machine);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001462
1463 return 0;
Ingo Molnarec156762009-09-11 12:12:54 +02001464}
1465
David Aherncb627502013-08-07 22:50:47 -04001466static int perf_sched__process_fork_event(struct perf_tool *tool,
1467 union perf_event *event,
1468 struct perf_sample *sample,
1469 struct machine *machine)
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001470{
1471 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
1472
David Aherncb627502013-08-07 22:50:47 -04001473 /* run the fork event through the perf machineruy */
1474 perf_event__process_fork(tool, event, sample, machine);
1475
1476 /* and then run additional processing needed for this command */
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001477 if (sched->tp_handler->fork_event)
David Aherncb627502013-08-07 22:50:47 -04001478 return sched->tp_handler->fork_event(sched, event, machine);
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001479
1480 return 0;
1481}
1482
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001483static int process_sched_migrate_task_event(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001484 struct perf_evsel *evsel,
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001485 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001486 struct machine *machine)
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001487{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001488 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001489
Arnaldo Carvalho de Melo9ec3f4e2012-09-11 19:29:17 -03001490 if (sched->tp_handler->migrate_task_event)
1491 return sched->tp_handler->migrate_task_event(sched, evsel, sample, machine);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001492
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001493 return 0;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001494}
1495
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001496typedef int (*tracepoint_handler)(struct perf_tool *tool,
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001497 struct perf_evsel *evsel,
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001498 struct perf_sample *sample,
Arnaldo Carvalho de Melo4218e672012-09-11 13:18:47 -03001499 struct machine *machine);
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001500
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001501static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused,
1502 union perf_event *event __maybe_unused,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001503 struct perf_sample *sample,
1504 struct perf_evsel *evsel,
1505 struct machine *machine)
Ingo Molnarec156762009-09-11 12:12:54 +02001506{
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001507 int err = 0;
Ingo Molnarec156762009-09-11 12:12:54 +02001508
Arnaldo Carvalho de Melo744a9712013-11-06 10:17:38 -03001509 if (evsel->handler != NULL) {
1510 tracepoint_handler f = evsel->handler;
Arnaldo Carvalho de Melo2b7fcbc2012-09-11 19:29:17 -03001511 err = f(tool, evsel, sample, machine);
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001512 }
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001513
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001514 return err;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001515}
1516
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001517static int perf_sched__read_events(struct perf_sched *sched)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001518{
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001519 const struct perf_evsel_str_handler handlers[] = {
1520 { "sched:sched_switch", process_sched_switch_event, },
1521 { "sched:sched_stat_runtime", process_sched_runtime_event, },
1522 { "sched:sched_wakeup", process_sched_wakeup_event, },
1523 { "sched:sched_wakeup_new", process_sched_wakeup_event, },
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001524 { "sched:sched_migrate_task", process_sched_migrate_task_event, },
1525 };
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001526 struct perf_session *session;
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001527 struct perf_data_file file = {
1528 .path = input_name,
1529 .mode = PERF_DATA_MODE_READ,
Yunlong Songf0dd3302015-03-31 21:46:35 +08001530 .force = sched->force,
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001531 };
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001532 int rc = -1;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001533
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001534 session = perf_session__new(&file, false, &sched->tool);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001535 if (session == NULL) {
1536 pr_debug("No Memory for session\n");
1537 return -1;
1538 }
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001539
Namhyung Kim0a7e6d12014-08-12 15:40:45 +09001540 symbol__init(&session->header.env);
Namhyung Kim04934102014-08-12 15:40:41 +09001541
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001542 if (perf_session__set_tracepoints_handlers(session, handlers))
1543 goto out_delete;
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001544
Arnaldo Carvalho de Melocee75ac2010-05-14 13:16:55 -03001545 if (perf_session__has_traces(session, "record -R")) {
Arnaldo Carvalho de Melob7b61cb2015-03-03 11:58:45 -03001546 int err = perf_session__process_events(session);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001547 if (err) {
1548 pr_err("Failed to process events, error %d", err);
1549 goto out_delete;
1550 }
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001551
Arnaldo Carvalho de Melo75be9892015-02-14 14:50:11 -03001552 sched->nr_events = session->evlist->stats.nr_events[0];
1553 sched->nr_lost_events = session->evlist->stats.total_lost;
1554 sched->nr_lost_chunks = session->evlist->stats.nr_events[PERF_RECORD_LOST];
Arnaldo Carvalho de Melocee75ac2010-05-14 13:16:55 -03001555 }
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -02001556
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001557 rc = 0;
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001558out_delete:
1559 perf_session__delete(session);
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001560 return rc;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001561}
1562
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001563static void print_bad_events(struct perf_sched *sched)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001564{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001565 if (sched->nr_unordered_timestamps && sched->nr_timestamps) {
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001566 printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001567 (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0,
1568 sched->nr_unordered_timestamps, sched->nr_timestamps);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001569 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001570 if (sched->nr_lost_events && sched->nr_events) {
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001571 printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001572 (double)sched->nr_lost_events/(double)sched->nr_events * 100.0,
1573 sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001574 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001575 if (sched->nr_context_switch_bugs && sched->nr_timestamps) {
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001576 printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001577 (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0,
1578 sched->nr_context_switch_bugs, sched->nr_timestamps);
1579 if (sched->nr_lost_events)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001580 printf(" (due to lost events?)");
1581 printf("\n");
1582 }
1583}
1584
Josef Bacik2f80dd42015-05-22 09:18:40 -04001585static void __merge_work_atoms(struct rb_root *root, struct work_atoms *data)
1586{
1587 struct rb_node **new = &(root->rb_node), *parent = NULL;
1588 struct work_atoms *this;
1589 const char *comm = thread__comm_str(data->thread), *this_comm;
1590
1591 while (*new) {
1592 int cmp;
1593
1594 this = container_of(*new, struct work_atoms, node);
1595 parent = *new;
1596
1597 this_comm = thread__comm_str(this->thread);
1598 cmp = strcmp(comm, this_comm);
1599 if (cmp > 0) {
1600 new = &((*new)->rb_left);
1601 } else if (cmp < 0) {
1602 new = &((*new)->rb_right);
1603 } else {
1604 this->num_merged++;
1605 this->total_runtime += data->total_runtime;
1606 this->nb_atoms += data->nb_atoms;
1607 this->total_lat += data->total_lat;
1608 list_splice(&data->work_list, &this->work_list);
1609 if (this->max_lat < data->max_lat) {
1610 this->max_lat = data->max_lat;
1611 this->max_lat_at = data->max_lat_at;
1612 }
1613 zfree(&data);
1614 return;
1615 }
1616 }
1617
1618 data->num_merged++;
1619 rb_link_node(&data->node, parent, new);
1620 rb_insert_color(&data->node, root);
1621}
1622
1623static void perf_sched__merge_lat(struct perf_sched *sched)
1624{
1625 struct work_atoms *data;
1626 struct rb_node *node;
1627
1628 if (sched->skip_merge)
1629 return;
1630
1631 while ((node = rb_first(&sched->atom_root))) {
1632 rb_erase(node, &sched->atom_root);
1633 data = rb_entry(node, struct work_atoms, node);
1634 __merge_work_atoms(&sched->merged_atom_root, data);
1635 }
1636}
1637
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001638static int perf_sched__lat(struct perf_sched *sched)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001639{
1640 struct rb_node *next;
1641
1642 setup_pager();
David Ahernad9def72013-08-07 22:50:44 -04001643
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001644 if (perf_sched__read_events(sched))
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001645 return -1;
David Ahernad9def72013-08-07 22:50:44 -04001646
Josef Bacik2f80dd42015-05-22 09:18:40 -04001647 perf_sched__merge_lat(sched);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001648 perf_sched__sort_lat(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001649
Ramkumar Ramachandra80790e02014-03-17 10:18:21 -04001650 printf("\n -----------------------------------------------------------------------------------------------------------------\n");
1651 printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n");
1652 printf(" -----------------------------------------------------------------------------------------------------------------\n");
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001653
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001654 next = rb_first(&sched->sorted_atom_root);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001655
1656 while (next) {
1657 struct work_atoms *work_list;
1658
1659 work_list = rb_entry(next, struct work_atoms, node);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001660 output_lat_thread(sched, work_list);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001661 next = rb_next(next);
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001662 thread__zput(work_list->thread);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001663 }
1664
Ramkumar Ramachandra80790e02014-03-17 10:18:21 -04001665 printf(" -----------------------------------------------------------------------------------------------------------------\n");
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001666 printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001667 (double)sched->all_runtime / 1e6, sched->all_count);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001668
1669 printf(" ---------------------------------------------------\n");
1670
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001671 print_bad_events(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001672 printf("\n");
1673
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001674 return 0;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001675}
1676
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001677static int perf_sched__map(struct perf_sched *sched)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001678{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001679 sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF);
Ingo Molnar40749d02009-09-17 18:24:55 +02001680
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001681 setup_pager();
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001682 if (perf_sched__read_events(sched))
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001683 return -1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001684 print_bad_events(sched);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001685 return 0;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001686}
1687
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001688static int perf_sched__replay(struct perf_sched *sched)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001689{
1690 unsigned long i;
1691
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001692 calibrate_run_measurement_overhead(sched);
1693 calibrate_sleep_measurement_overhead(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001694
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001695 test_calibrations(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001696
Arnaldo Carvalho de Meloae536ac2015-03-02 22:28:41 -03001697 if (perf_sched__read_events(sched))
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001698 return -1;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001699
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001700 printf("nr_run_events: %ld\n", sched->nr_run_events);
1701 printf("nr_sleep_events: %ld\n", sched->nr_sleep_events);
1702 printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001703
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001704 if (sched->targetless_wakeups)
1705 printf("target-less wakeups: %ld\n", sched->targetless_wakeups);
1706 if (sched->multitarget_wakeups)
1707 printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups);
1708 if (sched->nr_run_events_optimized)
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001709 printf("run atoms optimized: %ld\n",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001710 sched->nr_run_events_optimized);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001711
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001712 print_task_traces(sched);
1713 add_cross_task_wakeups(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001714
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001715 create_tasks(sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001716 printf("------------------------------------------------------------\n");
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001717 for (i = 0; i < sched->replay_repeat; i++)
1718 run_one_test(sched);
Arnaldo Carvalho de Meloa116e052012-09-08 22:53:06 -03001719
1720 return 0;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001721}
1722
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001723static void setup_sorting(struct perf_sched *sched, const struct option *options,
1724 const char * const usage_msg[])
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001725{
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001726 char *tmp, *tok, *str = strdup(sched->sort_order);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001727
1728 for (tok = strtok_r(str, ", ", &tmp);
1729 tok; tok = strtok_r(NULL, ", ", &tmp)) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001730 if (sort_dimension__add(tok, &sched->sort_list) < 0) {
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001731 error("Unknown --sort key: `%s'", tok);
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001732 usage_with_options(usage_msg, options);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001733 }
1734 }
1735
1736 free(str);
1737
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001738 sort_dimension__add("pid", &sched->cmp_pid);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001739}
1740
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001741static int __cmd_record(int argc, const char **argv)
1742{
1743 unsigned int rec_argc, i, j;
1744 const char **rec_argv;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001745 const char * const record_args[] = {
1746 "record",
1747 "-a",
1748 "-R",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001749 "-m", "1024",
1750 "-c", "1",
1751 "-e", "sched:sched_switch",
1752 "-e", "sched:sched_stat_wait",
1753 "-e", "sched:sched_stat_sleep",
1754 "-e", "sched:sched_stat_iowait",
1755 "-e", "sched:sched_stat_runtime",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001756 "-e", "sched:sched_process_fork",
1757 "-e", "sched:sched_wakeup",
Dongsheng7fff9592014-05-05 16:05:53 +09001758 "-e", "sched:sched_wakeup_new",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001759 "-e", "sched:sched_migrate_task",
1760 };
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001761
1762 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
1763 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1764
Arnaldo Carvalho de Meloe462dc52011-01-10 10:48:47 -02001765 if (rec_argv == NULL)
Chris Samuelce47dc52010-11-13 13:35:06 +11001766 return -ENOMEM;
1767
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001768 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1769 rec_argv[i] = strdup(record_args[i]);
1770
1771 for (j = 1; j < (unsigned int)argc; j++, i++)
1772 rec_argv[i] = argv[j];
1773
1774 BUG_ON(i != rec_argc);
1775
1776 return cmd_record(i, rec_argv, NULL);
1777}
1778
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001779int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001780{
Adrian Hunter8a39df82013-10-22 10:34:15 +03001781 const char default_sort_order[] = "avg, max, switch, runtime";
1782 struct perf_sched sched = {
1783 .tool = {
1784 .sample = perf_sched__process_tracepoint_sample,
1785 .comm = perf_event__process_comm,
1786 .lost = perf_event__process_lost,
1787 .fork = perf_sched__process_fork_event,
Jiri Olsa0a8cb852014-07-06 14:18:21 +02001788 .ordered_events = true,
Adrian Hunter8a39df82013-10-22 10:34:15 +03001789 },
1790 .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid),
1791 .sort_list = LIST_HEAD_INIT(sched.sort_list),
1792 .start_work_mutex = PTHREAD_MUTEX_INITIALIZER,
1793 .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER,
Adrian Hunter8a39df82013-10-22 10:34:15 +03001794 .sort_order = default_sort_order,
1795 .replay_repeat = 10,
1796 .profile_cpu = -1,
1797 .next_shortname1 = 'A',
1798 .next_shortname2 = '0',
Josef Bacik2f80dd42015-05-22 09:18:40 -04001799 .skip_merge = 0,
Adrian Hunter8a39df82013-10-22 10:34:15 +03001800 };
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001801 const struct option latency_options[] = {
1802 OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]",
1803 "sort by key(s): runtime, switch, avg, max"),
1804 OPT_INCR('v', "verbose", &verbose,
1805 "be more verbose (show symbol address, etc)"),
1806 OPT_INTEGER('C', "CPU", &sched.profile_cpu,
1807 "CPU to profile on"),
1808 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1809 "dump raw trace in ASCII"),
Josef Bacik2f80dd42015-05-22 09:18:40 -04001810 OPT_BOOLEAN('p', "pids", &sched.skip_merge,
1811 "latency stats per pid instead of per comm"),
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001812 OPT_END()
1813 };
1814 const struct option replay_options[] = {
1815 OPT_UINTEGER('r', "repeat", &sched.replay_repeat,
1816 "repeat the workload replay N times (-1: infinite)"),
1817 OPT_INCR('v', "verbose", &verbose,
1818 "be more verbose (show symbol address, etc)"),
1819 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1820 "dump raw trace in ASCII"),
Yunlong Song939cda52015-03-31 21:46:34 +08001821 OPT_BOOLEAN('f', "force", &sched.force, "don't complain, do it"),
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001822 OPT_END()
1823 };
1824 const struct option sched_options[] = {
Feng Tang70cb4e92012-10-30 11:56:02 +08001825 OPT_STRING('i', "input", &input_name, "file",
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001826 "input file name"),
1827 OPT_INCR('v', "verbose", &verbose,
1828 "be more verbose (show symbol address, etc)"),
1829 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1830 "dump raw trace in ASCII"),
1831 OPT_END()
1832 };
1833 const char * const latency_usage[] = {
1834 "perf sched latency [<options>]",
1835 NULL
1836 };
1837 const char * const replay_usage[] = {
1838 "perf sched replay [<options>]",
1839 NULL
1840 };
Ramkumar Ramachandraa83edb22014-03-14 23:17:54 -04001841 const char *const sched_subcommands[] = { "record", "latency", "map",
1842 "replay", "script", NULL };
1843 const char *sched_usage[] = {
1844 NULL,
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001845 NULL
1846 };
1847 struct trace_sched_handler lat_ops = {
1848 .wakeup_event = latency_wakeup_event,
1849 .switch_event = latency_switch_event,
1850 .runtime_event = latency_runtime_event,
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001851 .migrate_task_event = latency_migrate_task_event,
1852 };
1853 struct trace_sched_handler map_ops = {
1854 .switch_event = map_switch_event,
1855 };
1856 struct trace_sched_handler replay_ops = {
1857 .wakeup_event = replay_wakeup_event,
1858 .switch_event = replay_switch_event,
1859 .fork_event = replay_fork_event,
1860 };
Adrian Hunter156a2b02013-10-22 10:34:16 +03001861 unsigned int i;
1862
1863 for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++)
1864 sched.curr_pid[i] = -1;
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001865
Ramkumar Ramachandraa83edb22014-03-14 23:17:54 -04001866 argc = parse_options_subcommand(argc, argv, sched_options, sched_subcommands,
1867 sched_usage, PARSE_OPT_STOP_AT_NON_OPTION);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001868 if (!argc)
1869 usage_with_options(sched_usage, sched_options);
1870
Xiao Guangrongc0777c5a2009-12-07 12:04:49 +08001871 /*
Ingo Molnar133dc4c2010-11-16 18:45:39 +01001872 * Aliased to 'perf script' for now:
Xiao Guangrongc0777c5a2009-12-07 12:04:49 +08001873 */
Ingo Molnar133dc4c2010-11-16 18:45:39 +01001874 if (!strcmp(argv[0], "script"))
1875 return cmd_script(argc, argv, prefix);
Xiao Guangrongc0777c5a2009-12-07 12:04:49 +08001876
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001877 if (!strncmp(argv[0], "rec", 3)) {
1878 return __cmd_record(argc, argv);
1879 } else if (!strncmp(argv[0], "lat", 3)) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001880 sched.tp_handler = &lat_ops;
Ingo Molnarf2858d82009-09-11 12:12:54 +02001881 if (argc > 1) {
1882 argc = parse_options(argc, argv, latency_options, latency_usage, 0);
1883 if (argc)
1884 usage_with_options(latency_usage, latency_options);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001885 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001886 setup_sorting(&sched, latency_options, latency_usage);
1887 return perf_sched__lat(&sched);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001888 } else if (!strcmp(argv[0], "map")) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001889 sched.tp_handler = &map_ops;
1890 setup_sorting(&sched, latency_options, latency_usage);
1891 return perf_sched__map(&sched);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001892 } else if (!strncmp(argv[0], "rep", 3)) {
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001893 sched.tp_handler = &replay_ops;
Ingo Molnarf2858d82009-09-11 12:12:54 +02001894 if (argc) {
1895 argc = parse_options(argc, argv, replay_options, replay_usage, 0);
1896 if (argc)
1897 usage_with_options(replay_usage, replay_options);
1898 }
Arnaldo Carvalho de Melo0e9b07e2012-09-11 17:29:27 -03001899 return perf_sched__replay(&sched);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001900 } else {
1901 usage_with_options(sched_usage, sched_options);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001902 }
1903
Ingo Molnarec156762009-09-11 12:12:54 +02001904 return 0;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001905}