Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 1 | /* |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 2 | * builtin-top.c |
| 3 | * |
| 4 | * Builtin top command: Display a continuously updated profile of |
| 5 | * any workload, CPU or specific PID. |
| 6 | * |
| 7 | * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com> |
| 8 | * |
| 9 | * Improvements and fixes by: |
| 10 | * |
| 11 | * Arjan van de Ven <arjan@linux.intel.com> |
| 12 | * Yanmin Zhang <yanmin.zhang@intel.com> |
| 13 | * Wu Fengguang <fengguang.wu@intel.com> |
| 14 | * Mike Galbraith <efault@gmx.de> |
| 15 | * Paul Mackerras <paulus@samba.org> |
| 16 | * |
| 17 | * Released under the GPL v2. (and only v2, not any later version) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 18 | */ |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 19 | #include "builtin.h" |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 20 | |
Peter Zijlstra | 1a482f3 | 2009-05-23 18:28:58 +0200 | [diff] [blame] | 21 | #include "perf.h" |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 22 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 23 | #include "util/symbol.h" |
Ingo Molnar | 8fc0321 | 2009-06-04 15:19:47 +0200 | [diff] [blame] | 24 | #include "util/color.h" |
Ingo Molnar | 148be2c | 2009-04-27 08:02:14 +0200 | [diff] [blame] | 25 | #include "util/util.h" |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 26 | #include "util/rbtree.h" |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 27 | #include "util/parse-options.h" |
| 28 | #include "util/parse-events.h" |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 29 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 30 | #include <assert.h> |
| 31 | #include <fcntl.h> |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 32 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 33 | #include <stdio.h> |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 34 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 35 | #include <errno.h> |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 36 | #include <time.h> |
| 37 | #include <sched.h> |
| 38 | #include <pthread.h> |
| 39 | |
| 40 | #include <sys/syscall.h> |
| 41 | #include <sys/ioctl.h> |
| 42 | #include <sys/poll.h> |
| 43 | #include <sys/prctl.h> |
| 44 | #include <sys/wait.h> |
| 45 | #include <sys/uio.h> |
| 46 | #include <sys/mman.h> |
| 47 | |
| 48 | #include <linux/unistd.h> |
| 49 | #include <linux/types.h> |
| 50 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 51 | static int fd[MAX_NR_CPUS][MAX_COUNTERS]; |
| 52 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 53 | static int system_wide = 0; |
| 54 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 55 | static int default_interval = 100000; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 56 | |
Ingo Molnar | 6e53cdf | 2009-06-04 08:53:05 +0200 | [diff] [blame] | 57 | static __u64 count_filter = 5; |
| 58 | static int print_entries = 15; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 59 | |
Ingo Molnar | 6e53cdf | 2009-06-04 08:53:05 +0200 | [diff] [blame] | 60 | static int target_pid = -1; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 61 | static int profile_cpu = -1; |
| 62 | static int nr_cpus = 0; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 63 | static unsigned int realtime_prio = 0; |
| 64 | static int group = 0; |
| 65 | static unsigned int page_size; |
Ingo Molnar | cf1f457 | 2009-06-05 13:27:02 +0200 | [diff] [blame] | 66 | static unsigned int mmap_pages = 16; |
| 67 | static int freq = 0; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 68 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 69 | static char *sym_filter; |
| 70 | static unsigned long filter_start; |
| 71 | static unsigned long filter_end; |
| 72 | |
| 73 | static int delay_secs = 2; |
| 74 | static int zero; |
| 75 | static int dump_symtab; |
| 76 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 77 | /* |
| 78 | * Symbols |
| 79 | */ |
| 80 | |
| 81 | static uint64_t min_ip; |
| 82 | static uint64_t max_ip = -1ll; |
| 83 | |
| 84 | struct sym_entry { |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 85 | struct rb_node rb_node; |
| 86 | struct list_head node; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 87 | unsigned long count[MAX_COUNTERS]; |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 88 | unsigned long snap_count; |
| 89 | double weight; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 90 | int skip; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 91 | }; |
| 92 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 93 | struct sym_entry *sym_filter_entry; |
| 94 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 95 | struct dso *kernel_dso; |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 96 | |
| 97 | /* |
| 98 | * Symbols will be added here in record_ip and will get out |
| 99 | * after decayed. |
| 100 | */ |
| 101 | static LIST_HEAD(active_symbols); |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 102 | static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 103 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 104 | /* |
| 105 | * Ordering weight: count-1 * count-2 * ... / count-n |
| 106 | */ |
| 107 | static double sym_weight(const struct sym_entry *sym) |
| 108 | { |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 109 | double weight = sym->snap_count; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 110 | int counter; |
| 111 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 112 | for (counter = 1; counter < nr_counters-1; counter++) |
| 113 | weight *= sym->count[counter]; |
| 114 | |
| 115 | weight /= (sym->count[counter] + 1); |
| 116 | |
| 117 | return weight; |
| 118 | } |
| 119 | |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 120 | static long samples; |
| 121 | static long userspace_samples; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 122 | static const char CONSOLE_CLEAR[] = "[H[2J"; |
| 123 | |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 124 | static void __list_insert_active_sym(struct sym_entry *syme) |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 125 | { |
| 126 | list_add(&syme->node, &active_symbols); |
| 127 | } |
| 128 | |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 129 | static void list_remove_active_sym(struct sym_entry *syme) |
| 130 | { |
| 131 | pthread_mutex_lock(&active_symbols_lock); |
| 132 | list_del_init(&syme->node); |
| 133 | pthread_mutex_unlock(&active_symbols_lock); |
| 134 | } |
| 135 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 136 | static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se) |
| 137 | { |
| 138 | struct rb_node **p = &tree->rb_node; |
| 139 | struct rb_node *parent = NULL; |
| 140 | struct sym_entry *iter; |
| 141 | |
| 142 | while (*p != NULL) { |
| 143 | parent = *p; |
| 144 | iter = rb_entry(parent, struct sym_entry, rb_node); |
| 145 | |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 146 | if (se->weight > iter->weight) |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 147 | p = &(*p)->rb_left; |
| 148 | else |
| 149 | p = &(*p)->rb_right; |
| 150 | } |
| 151 | |
| 152 | rb_link_node(&se->rb_node, parent, p); |
| 153 | rb_insert_color(&se->rb_node, tree); |
| 154 | } |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 155 | |
| 156 | static void print_sym_table(void) |
| 157 | { |
Ingo Molnar | 233f0b9 | 2009-06-03 21:48:40 +0200 | [diff] [blame] | 158 | int printed = 0, j; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 159 | int counter; |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 160 | float samples_per_sec = samples/delay_secs; |
| 161 | float ksamples_per_sec = (samples-userspace_samples)/delay_secs; |
| 162 | float sum_ksamples = 0.0; |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 163 | struct sym_entry *syme, *n; |
| 164 | struct rb_root tmp = RB_ROOT; |
| 165 | struct rb_node *nd; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 166 | |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 167 | samples = userspace_samples = 0; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 168 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 169 | /* Sort the active symbols */ |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 170 | pthread_mutex_lock(&active_symbols_lock); |
| 171 | syme = list_entry(active_symbols.next, struct sym_entry, node); |
| 172 | pthread_mutex_unlock(&active_symbols_lock); |
| 173 | |
| 174 | list_for_each_entry_safe_from(syme, n, &active_symbols, node) { |
| 175 | syme->snap_count = syme->count[0]; |
| 176 | if (syme->snap_count != 0) { |
| 177 | syme->weight = sym_weight(syme); |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 178 | rb_insert_active_sym(&tmp, syme); |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 179 | sum_ksamples += syme->snap_count; |
Mike Galbraith | d94b943 | 2009-05-25 09:57:56 +0200 | [diff] [blame] | 180 | |
| 181 | for (j = 0; j < nr_counters; j++) |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 182 | syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; |
| 183 | } else |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 184 | list_remove_active_sym(syme); |
Mike Galbraith | d94b943 | 2009-05-25 09:57:56 +0200 | [diff] [blame] | 185 | } |
| 186 | |
Frederic Weisbecker | 0f5486b | 2009-06-04 20:48:04 +0200 | [diff] [blame] | 187 | puts(CONSOLE_CLEAR); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 188 | |
| 189 | printf( |
| 190 | "------------------------------------------------------------------------------\n"); |
Ingo Molnar | f2521b6 | 2009-06-03 19:17:25 +0200 | [diff] [blame] | 191 | printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [", |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 192 | samples_per_sec, |
| 193 | 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec))); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 194 | |
Ingo Molnar | cf1f457 | 2009-06-05 13:27:02 +0200 | [diff] [blame] | 195 | if (nr_counters == 1) { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 196 | printf("%Ld", attrs[0].sample_period); |
Ingo Molnar | cf1f457 | 2009-06-05 13:27:02 +0200 | [diff] [blame] | 197 | if (freq) |
| 198 | printf("Hz "); |
| 199 | else |
| 200 | printf(" "); |
| 201 | } |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 202 | |
| 203 | for (counter = 0; counter < nr_counters; counter++) { |
| 204 | if (counter) |
| 205 | printf("/"); |
| 206 | |
| 207 | printf("%s", event_name(counter)); |
| 208 | } |
| 209 | |
| 210 | printf( "], "); |
| 211 | |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 212 | if (target_pid != -1) |
| 213 | printf(" (target_pid: %d", target_pid); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 214 | else |
| 215 | printf(" (all"); |
| 216 | |
| 217 | if (profile_cpu != -1) |
| 218 | printf(", cpu: %d)\n", profile_cpu); |
| 219 | else { |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 220 | if (target_pid != -1) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 221 | printf(")\n"); |
| 222 | else |
| 223 | printf(", %d CPUs)\n", nr_cpus); |
| 224 | } |
| 225 | |
| 226 | printf("------------------------------------------------------------------------------\n\n"); |
| 227 | |
| 228 | if (nr_counters == 1) |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 229 | printf(" samples pcnt"); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 230 | else |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 231 | printf(" weight samples pcnt"); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 232 | |
| 233 | printf(" RIP kernel function\n" |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 234 | " ______ _______ _____ ________________ _______________\n\n" |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 235 | ); |
| 236 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 237 | for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { |
| 238 | struct sym_entry *syme = rb_entry(nd, struct sym_entry, rb_node); |
| 239 | struct symbol *sym = (struct symbol *)(syme + 1); |
Ingo Molnar | 8fc0321 | 2009-06-04 15:19:47 +0200 | [diff] [blame] | 240 | char *color = PERF_COLOR_NORMAL; |
| 241 | double pcnt; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 242 | |
Ingo Molnar | 6e53cdf | 2009-06-04 08:53:05 +0200 | [diff] [blame] | 243 | if (++printed > print_entries || syme->snap_count < count_filter) |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 244 | continue; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 245 | |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 246 | pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / |
| 247 | sum_ksamples)); |
Mike Galbraith | d94b943 | 2009-05-25 09:57:56 +0200 | [diff] [blame] | 248 | |
Ingo Molnar | 8fc0321 | 2009-06-04 15:19:47 +0200 | [diff] [blame] | 249 | /* |
| 250 | * We color high-overhead entries in red, low-overhead |
| 251 | * entries in green - and keep the middle ground normal: |
| 252 | */ |
| 253 | if (pcnt >= 5.0) |
| 254 | color = PERF_COLOR_RED; |
| 255 | if (pcnt < 0.5) |
| 256 | color = PERF_COLOR_GREEN; |
| 257 | |
Mike Galbraith | d94b943 | 2009-05-25 09:57:56 +0200 | [diff] [blame] | 258 | if (nr_counters == 1) |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 259 | printf("%20.2f - ", syme->weight); |
Mike Galbraith | d94b943 | 2009-05-25 09:57:56 +0200 | [diff] [blame] | 260 | else |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 261 | printf("%9.1f %10ld - ", syme->weight, syme->snap_count); |
Ingo Molnar | 8fc0321 | 2009-06-04 15:19:47 +0200 | [diff] [blame] | 262 | |
| 263 | color_fprintf(stdout, color, "%4.1f%%", pcnt); |
| 264 | printf(" - %016llx : %s\n", sym->start, sym->name); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 265 | } |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | static void *display_thread(void *arg) |
| 269 | { |
Frederic Weisbecker | 0f5486b | 2009-06-04 20:48:04 +0200 | [diff] [blame] | 270 | struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; |
| 271 | int delay_msecs = delay_secs * 1000; |
| 272 | |
Ingo Molnar | f2521b6 | 2009-06-03 19:17:25 +0200 | [diff] [blame] | 273 | printf("PerfTop refresh period: %d seconds\n", delay_secs); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 274 | |
Frederic Weisbecker | 0f5486b | 2009-06-04 20:48:04 +0200 | [diff] [blame] | 275 | do { |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 276 | print_sym_table(); |
Frederic Weisbecker | 0f5486b | 2009-06-04 20:48:04 +0200 | [diff] [blame] | 277 | } while (!poll(&stdin_poll, 1, delay_msecs) == 1); |
| 278 | |
| 279 | printf("key pressed - exiting.\n"); |
| 280 | exit(0); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 281 | |
| 282 | return NULL; |
| 283 | } |
| 284 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 285 | static int symbol_filter(struct dso *self, struct symbol *sym) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 286 | { |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 287 | static int filter_match; |
| 288 | struct sym_entry *syme; |
| 289 | const char *name = sym->name; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 290 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 291 | if (!strcmp(name, "_text") || |
| 292 | !strcmp(name, "_etext") || |
| 293 | !strcmp(name, "_sinittext") || |
| 294 | !strncmp("init_module", name, 11) || |
| 295 | !strncmp("cleanup_module", name, 14) || |
| 296 | strstr(name, "_text_start") || |
| 297 | strstr(name, "_text_end")) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 298 | return 1; |
| 299 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 300 | syme = dso__sym_priv(self, sym); |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 301 | /* Tag samples to be skipped. */ |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 302 | if (!strcmp("default_idle", name) || |
| 303 | !strcmp("cpu_idle", name) || |
| 304 | !strcmp("enter_idle", name) || |
| 305 | !strcmp("exit_idle", name) || |
| 306 | !strcmp("mwait_idle", name)) |
| 307 | syme->skip = 1; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 308 | |
| 309 | if (filter_match == 1) { |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 310 | filter_end = sym->start; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 311 | filter_match = -1; |
| 312 | if (filter_end - filter_start > 10000) { |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 313 | fprintf(stderr, |
| 314 | "hm, too large filter symbol <%s> - skipping.\n", |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 315 | sym_filter); |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 316 | fprintf(stderr, "symbol filter start: %016lx\n", |
| 317 | filter_start); |
| 318 | fprintf(stderr, " end: %016lx\n", |
| 319 | filter_end); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 320 | filter_end = filter_start = 0; |
| 321 | sym_filter = NULL; |
| 322 | sleep(1); |
| 323 | } |
| 324 | } |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 325 | |
| 326 | if (filter_match == 0 && sym_filter && !strcmp(name, sym_filter)) { |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 327 | filter_match = 1; |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 328 | filter_start = sym->start; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 329 | } |
| 330 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 331 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 332 | return 0; |
| 333 | } |
| 334 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 335 | static int parse_symbols(void) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 336 | { |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 337 | struct rb_node *node; |
| 338 | struct symbol *sym; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 339 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 340 | kernel_dso = dso__new("[kernel]", sizeof(struct sym_entry)); |
| 341 | if (kernel_dso == NULL) |
| 342 | return -1; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 343 | |
Ingo Molnar | bd74137 | 2009-06-04 14:13:04 +0200 | [diff] [blame] | 344 | if (dso__load_kernel(kernel_dso, NULL, symbol_filter, 1) != 0) |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 345 | goto out_delete_dso; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 346 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 347 | node = rb_first(&kernel_dso->syms); |
| 348 | sym = rb_entry(node, struct symbol, rb_node); |
| 349 | min_ip = sym->start; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 350 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 351 | node = rb_last(&kernel_dso->syms); |
| 352 | sym = rb_entry(node, struct symbol, rb_node); |
Mike Galbraith | da417a7 | 2009-05-29 08:23:16 +0200 | [diff] [blame] | 353 | max_ip = sym->end; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 354 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 355 | if (dump_symtab) |
Mike Galbraith | a3ec8d7 | 2009-05-29 06:46:46 +0200 | [diff] [blame] | 356 | dso__fprintf(kernel_dso, stderr); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 357 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 358 | return 0; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 359 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 360 | out_delete_dso: |
| 361 | dso__delete(kernel_dso); |
| 362 | kernel_dso = NULL; |
| 363 | return -1; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 364 | } |
| 365 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 366 | #define TRACE_COUNT 3 |
| 367 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 368 | /* |
| 369 | * Binary search in the histogram table and record the hit: |
| 370 | */ |
| 371 | static void record_ip(uint64_t ip, int counter) |
| 372 | { |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 373 | struct symbol *sym = dso__find_symbol(kernel_dso, ip); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 374 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 375 | if (sym != NULL) { |
| 376 | struct sym_entry *syme = dso__sym_priv(kernel_dso, sym); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 377 | |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 378 | if (!syme->skip) { |
| 379 | syme->count[counter]++; |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 380 | pthread_mutex_lock(&active_symbols_lock); |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 381 | if (list_empty(&syme->node) || !syme->node.next) |
Arnaldo Carvalho de Melo | c44613a | 2009-05-29 17:03:07 -0300 | [diff] [blame] | 382 | __list_insert_active_sym(syme); |
| 383 | pthread_mutex_unlock(&active_symbols_lock); |
Arnaldo Carvalho de Melo | de04687 | 2009-05-28 14:55:41 -0300 | [diff] [blame] | 384 | return; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 385 | } |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 386 | } |
| 387 | |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 388 | samples--; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 389 | } |
| 390 | |
| 391 | static void process_event(uint64_t ip, int counter) |
| 392 | { |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 393 | samples++; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 394 | |
| 395 | if (ip < min_ip || ip > max_ip) { |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 396 | userspace_samples++; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 397 | return; |
| 398 | } |
| 399 | |
| 400 | record_ip(ip, counter); |
| 401 | } |
| 402 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 403 | struct mmap_data { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 404 | int counter; |
| 405 | void *base; |
| 406 | unsigned int mask; |
| 407 | unsigned int prev; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 408 | }; |
| 409 | |
| 410 | static unsigned int mmap_read_head(struct mmap_data *md) |
| 411 | { |
| 412 | struct perf_counter_mmap_page *pc = md->base; |
| 413 | int head; |
| 414 | |
| 415 | head = pc->data_head; |
| 416 | rmb(); |
| 417 | |
| 418 | return head; |
| 419 | } |
| 420 | |
| 421 | struct timeval last_read, this_read; |
| 422 | |
| 423 | static void mmap_read(struct mmap_data *md) |
| 424 | { |
| 425 | unsigned int head = mmap_read_head(md); |
| 426 | unsigned int old = md->prev; |
| 427 | unsigned char *data = md->base + page_size; |
| 428 | int diff; |
| 429 | |
| 430 | gettimeofday(&this_read, NULL); |
| 431 | |
| 432 | /* |
| 433 | * If we're further behind than half the buffer, there's a chance |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 434 | * the writer will bite our tail and mess up the samples under us. |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 435 | * |
| 436 | * If we somehow ended up ahead of the head, we got messed up. |
| 437 | * |
| 438 | * In either case, truncate and restart at head. |
| 439 | */ |
| 440 | diff = head - old; |
| 441 | if (diff > md->mask / 2 || diff < 0) { |
| 442 | struct timeval iv; |
| 443 | unsigned long msecs; |
| 444 | |
| 445 | timersub(&this_read, &last_read, &iv); |
| 446 | msecs = iv.tv_sec*1000 + iv.tv_usec/1000; |
| 447 | |
| 448 | fprintf(stderr, "WARNING: failed to keep up with mmap data." |
| 449 | " Last read %lu msecs ago.\n", msecs); |
| 450 | |
| 451 | /* |
| 452 | * head points to a known good entry, start there. |
| 453 | */ |
| 454 | old = head; |
| 455 | } |
| 456 | |
| 457 | last_read = this_read; |
| 458 | |
| 459 | for (; old != head;) { |
| 460 | struct ip_event { |
| 461 | struct perf_event_header header; |
| 462 | __u64 ip; |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 463 | __u32 pid, target_pid; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 464 | }; |
| 465 | struct mmap_event { |
| 466 | struct perf_event_header header; |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 467 | __u32 pid, target_pid; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 468 | __u64 start; |
| 469 | __u64 len; |
| 470 | __u64 pgoff; |
| 471 | char filename[PATH_MAX]; |
| 472 | }; |
| 473 | |
| 474 | typedef union event_union { |
| 475 | struct perf_event_header header; |
| 476 | struct ip_event ip; |
| 477 | struct mmap_event mmap; |
| 478 | } event_t; |
| 479 | |
| 480 | event_t *event = (event_t *)&data[old & md->mask]; |
| 481 | |
| 482 | event_t event_copy; |
| 483 | |
Ingo Molnar | 6f06ccb | 2009-04-20 15:22:22 +0200 | [diff] [blame] | 484 | size_t size = event->header.size; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 485 | |
| 486 | /* |
| 487 | * Event straddles the mmap boundary -- header should always |
| 488 | * be inside due to u64 alignment of output. |
| 489 | */ |
| 490 | if ((old & md->mask) + size != ((old + size) & md->mask)) { |
| 491 | unsigned int offset = old; |
| 492 | unsigned int len = min(sizeof(*event), size), cpy; |
| 493 | void *dst = &event_copy; |
| 494 | |
| 495 | do { |
| 496 | cpy = min(md->mask + 1 - (offset & md->mask), len); |
| 497 | memcpy(dst, &data[offset & md->mask], cpy); |
| 498 | offset += cpy; |
| 499 | dst += cpy; |
| 500 | len -= cpy; |
| 501 | } while (len); |
| 502 | |
| 503 | event = &event_copy; |
| 504 | } |
| 505 | |
| 506 | old += size; |
| 507 | |
| 508 | if (event->header.misc & PERF_EVENT_MISC_OVERFLOW) { |
Peter Zijlstra | c70975b | 2009-06-02 17:38:21 +0200 | [diff] [blame] | 509 | if (event->header.type & PERF_SAMPLE_IP) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 510 | process_event(event->ip.ip, md->counter); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 511 | } |
| 512 | } |
| 513 | |
| 514 | md->prev = old; |
| 515 | } |
| 516 | |
Mike Galbraith | c2990a2 | 2009-05-24 08:35:49 +0200 | [diff] [blame] | 517 | static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; |
| 518 | static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; |
| 519 | |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 520 | static int __cmd_top(void) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 521 | { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 522 | struct perf_counter_attr *attr; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 523 | pthread_t thread; |
| 524 | int i, counter, group_fd, nr_poll = 0; |
| 525 | unsigned int cpu; |
| 526 | int ret; |
| 527 | |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 528 | for (i = 0; i < nr_cpus; i++) { |
| 529 | group_fd = -1; |
| 530 | for (counter = 0; counter < nr_counters; counter++) { |
| 531 | |
| 532 | cpu = profile_cpu; |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 533 | if (target_pid == -1 && profile_cpu == -1) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 534 | cpu = i; |
| 535 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 536 | attr = attrs + counter; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 537 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 538 | attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; |
| 539 | attr->freq = freq; |
| 540 | |
| 541 | fd[i][counter] = sys_perf_counter_open(attr, target_pid, cpu, group_fd, 0); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 542 | if (fd[i][counter] < 0) { |
| 543 | int err = errno; |
Ingo Molnar | f2521b6 | 2009-06-03 19:17:25 +0200 | [diff] [blame] | 544 | |
| 545 | error("syscall returned with %d (%s)\n", |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 546 | fd[i][counter], strerror(err)); |
| 547 | if (err == EPERM) |
| 548 | printf("Are you root?\n"); |
| 549 | exit(-1); |
| 550 | } |
| 551 | assert(fd[i][counter] >= 0); |
| 552 | fcntl(fd[i][counter], F_SETFL, O_NONBLOCK); |
| 553 | |
| 554 | /* |
| 555 | * First counter acts as the group leader: |
| 556 | */ |
| 557 | if (group && group_fd == -1) |
| 558 | group_fd = fd[i][counter]; |
| 559 | |
| 560 | event_array[nr_poll].fd = fd[i][counter]; |
| 561 | event_array[nr_poll].events = POLLIN; |
| 562 | nr_poll++; |
| 563 | |
| 564 | mmap_array[i][counter].counter = counter; |
| 565 | mmap_array[i][counter].prev = 0; |
| 566 | mmap_array[i][counter].mask = mmap_pages*page_size - 1; |
| 567 | mmap_array[i][counter].base = mmap(NULL, (mmap_pages+1)*page_size, |
| 568 | PROT_READ, MAP_SHARED, fd[i][counter], 0); |
Ingo Molnar | f2521b6 | 2009-06-03 19:17:25 +0200 | [diff] [blame] | 569 | if (mmap_array[i][counter].base == MAP_FAILED) |
| 570 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 571 | } |
| 572 | } |
| 573 | |
| 574 | if (pthread_create(&thread, NULL, display_thread, NULL)) { |
| 575 | printf("Could not create display thread.\n"); |
| 576 | exit(-1); |
| 577 | } |
| 578 | |
| 579 | if (realtime_prio) { |
| 580 | struct sched_param param; |
| 581 | |
| 582 | param.sched_priority = realtime_prio; |
| 583 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
| 584 | printf("Could not set realtime priority.\n"); |
| 585 | exit(-1); |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | while (1) { |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 590 | int hits = samples; |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 591 | |
| 592 | for (i = 0; i < nr_cpus; i++) { |
| 593 | for (counter = 0; counter < nr_counters; counter++) |
| 594 | mmap_read(&mmap_array[i][counter]); |
| 595 | } |
| 596 | |
Ingo Molnar | 2debbc8 | 2009-06-05 14:29:10 +0200 | [diff] [blame] | 597 | if (hits == samples) |
Ingo Molnar | 0780060 | 2009-04-20 15:00:56 +0200 | [diff] [blame] | 598 | ret = poll(event_array, nr_poll, 100); |
| 599 | } |
| 600 | |
| 601 | return 0; |
| 602 | } |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 603 | |
| 604 | static const char * const top_usage[] = { |
| 605 | "perf top [<options>]", |
| 606 | NULL |
| 607 | }; |
| 608 | |
| 609 | static char events_help_msg[EVENTS_HELP_MAX]; |
| 610 | |
| 611 | static const struct option options[] = { |
| 612 | OPT_CALLBACK('e', "event", NULL, "event", |
| 613 | events_help_msg, parse_events), |
| 614 | OPT_INTEGER('c', "count", &default_interval, |
| 615 | "event period to sample"), |
| 616 | OPT_INTEGER('p', "pid", &target_pid, |
| 617 | "profile events on existing pid"), |
| 618 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
| 619 | "system-wide collection from all CPUs"), |
| 620 | OPT_INTEGER('C', "CPU", &profile_cpu, |
| 621 | "CPU to profile on"), |
| 622 | OPT_INTEGER('m', "mmap-pages", &mmap_pages, |
| 623 | "number of mmap data pages"), |
| 624 | OPT_INTEGER('r', "realtime", &realtime_prio, |
| 625 | "collect data with this RT SCHED_FIFO priority"), |
Mike Galbraith | db20c00 | 2009-05-26 15:25:34 +0200 | [diff] [blame] | 626 | OPT_INTEGER('d', "delay", &delay_secs, |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 627 | "number of seconds to delay between refreshes"), |
| 628 | OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, |
| 629 | "dump the symbol table used for profiling"), |
Ingo Molnar | 6e53cdf | 2009-06-04 08:53:05 +0200 | [diff] [blame] | 630 | OPT_INTEGER('f', "count-filter", &count_filter, |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 631 | "only display functions with more events than this"), |
| 632 | OPT_BOOLEAN('g', "group", &group, |
| 633 | "put the counters into a counter group"), |
| 634 | OPT_STRING('s', "sym-filter", &sym_filter, "pattern", |
| 635 | "only display symbols matchig this pattern"), |
| 636 | OPT_BOOLEAN('z', "zero", &group, |
| 637 | "zero history across updates"), |
Ingo Molnar | 6e53cdf | 2009-06-04 08:53:05 +0200 | [diff] [blame] | 638 | OPT_INTEGER('F', "freq", &freq, |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 639 | "profile at this frequency"), |
Ingo Molnar | 6e53cdf | 2009-06-04 08:53:05 +0200 | [diff] [blame] | 640 | OPT_INTEGER('E', "entries", &print_entries, |
| 641 | "display this many functions"), |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 642 | OPT_END() |
| 643 | }; |
| 644 | |
| 645 | int cmd_top(int argc, const char **argv, const char *prefix) |
| 646 | { |
| 647 | int counter; |
| 648 | |
| 649 | page_size = sysconf(_SC_PAGE_SIZE); |
| 650 | |
| 651 | create_events_help(events_help_msg); |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 652 | |
| 653 | argc = parse_options(argc, argv, options, top_usage, 0); |
| 654 | if (argc) |
| 655 | usage_with_options(top_usage, options); |
| 656 | |
| 657 | if (freq) { |
| 658 | default_interval = freq; |
| 659 | freq = 1; |
| 660 | } |
| 661 | |
| 662 | /* CPU and PID are mutually exclusive */ |
| 663 | if (target_pid != -1 && profile_cpu != -1) { |
| 664 | printf("WARNING: PID switch overriding CPU\n"); |
| 665 | sleep(1); |
| 666 | profile_cpu = -1; |
| 667 | } |
| 668 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 669 | if (!nr_counters) |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 670 | nr_counters = 1; |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 671 | |
Frederic Weisbecker | 2f335a0 | 2009-06-05 19:31:01 +0200 | [diff] [blame] | 672 | if (delay_secs < 1) |
| 673 | delay_secs = 1; |
| 674 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 675 | parse_symbols(); |
| 676 | |
| 677 | /* |
| 678 | * Fill in the ones not specifically initialized via -c: |
| 679 | */ |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 680 | for (counter = 0; counter < nr_counters; counter++) { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 681 | if (attrs[counter].sample_period) |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 682 | continue; |
| 683 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 684 | attrs[counter].sample_period = default_interval; |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 685 | } |
| 686 | |
| 687 | nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); |
| 688 | assert(nr_cpus <= MAX_NR_CPUS); |
| 689 | assert(nr_cpus >= 0); |
| 690 | |
| 691 | if (target_pid != -1 || profile_cpu != -1) |
| 692 | nr_cpus = 1; |
| 693 | |
Ingo Molnar | b456bae | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 694 | return __cmd_top(); |
| 695 | } |