blob: 972310cbeb63b069b44c7cba9d19eead1ba3f97a [file] [log] [blame]
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +09001#include "builtin.h"
2#include "perf.h"
3
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -03004#include "util/evlist.h"
Arnaldo Carvalho de Melofcf65bf2012-08-07 09:58:03 -03005#include "util/evsel.h"
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +09006#include "util/util.h"
7#include "util/cache.h"
8#include "util/symbol.h"
9#include "util/thread.h"
10#include "util/header.h"
11
12#include "util/parse-options.h"
13#include "util/trace-event.h"
14
15#include "util/debug.h"
16#include "util/session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020017#include "util/tool.h"
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090018
19#include <sys/types.h>
20#include <sys/prctl.h>
21#include <semaphore.h>
22#include <pthread.h>
23#include <math.h>
24#include <limits.h>
25
26#include <linux/list.h>
27#include <linux/hash.h>
28
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +090029static struct perf_session *session;
30
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090031/* based on kernel/lockdep.c */
32#define LOCKHASH_BITS 12
33#define LOCKHASH_SIZE (1UL << LOCKHASH_BITS)
34
35static struct list_head lockhash_table[LOCKHASH_SIZE];
36
37#define __lockhashfn(key) hash_long((unsigned long)key, LOCKHASH_BITS)
38#define lockhashentry(key) (lockhash_table + __lockhashfn((key)))
39
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090040struct lock_stat {
Ingo Molnar59f411b2010-01-31 08:27:58 +010041 struct list_head hash_entry;
42 struct rb_node rb; /* used for sorting */
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090043
Ingo Molnar59f411b2010-01-31 08:27:58 +010044 /*
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -030045 * FIXME: perf_evsel__intval() returns u64,
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090046 * so address of lockdep_map should be dealed as 64bit.
Ingo Molnar59f411b2010-01-31 08:27:58 +010047 * Is there more better solution?
48 */
49 void *addr; /* address of lockdep_map, used as ID */
50 char *name; /* for strcpy(), we cannot use const */
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090051
Ingo Molnar59f411b2010-01-31 08:27:58 +010052 unsigned int nr_acquire;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +090053 unsigned int nr_acquired;
Ingo Molnar59f411b2010-01-31 08:27:58 +010054 unsigned int nr_contended;
55 unsigned int nr_release;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090056
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +090057 unsigned int nr_readlock;
58 unsigned int nr_trylock;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090059 /* these times are in nano sec. */
Ingo Molnar59f411b2010-01-31 08:27:58 +010060 u64 wait_time_total;
61 u64 wait_time_min;
62 u64 wait_time_max;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +090063
64 int discard; /* flag of blacklist */
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +090065};
66
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +090067/*
68 * States of lock_seq_stat
69 *
70 * UNINITIALIZED is required for detecting first event of acquire.
71 * As the nature of lock events, there is no guarantee
72 * that the first event for the locks are acquire,
73 * it can be acquired, contended or release.
74 */
75#define SEQ_STATE_UNINITIALIZED 0 /* initial state */
76#define SEQ_STATE_RELEASED 1
77#define SEQ_STATE_ACQUIRING 2
78#define SEQ_STATE_ACQUIRED 3
79#define SEQ_STATE_READ_ACQUIRED 4
80#define SEQ_STATE_CONTENDED 5
81
82/*
83 * MAX_LOCK_DEPTH
84 * Imported from include/linux/sched.h.
85 * Should this be synchronized?
86 */
87#define MAX_LOCK_DEPTH 48
88
89/*
90 * struct lock_seq_stat:
91 * Place to put on state of one lock sequence
92 * 1) acquire -> acquired -> release
93 * 2) acquire -> contended -> acquired -> release
94 * 3) acquire (with read or try) -> release
95 * 4) Are there other patterns?
96 */
97struct lock_seq_stat {
98 struct list_head list;
99 int state;
100 u64 prev_event_time;
101 void *addr;
102
103 int read_count;
104};
105
106struct thread_stat {
107 struct rb_node rb;
108
109 u32 tid;
110 struct list_head seq_list;
111};
112
113static struct rb_root thread_stats;
114
115static struct thread_stat *thread_stat_find(u32 tid)
116{
117 struct rb_node *node;
118 struct thread_stat *st;
119
120 node = thread_stats.rb_node;
121 while (node) {
122 st = container_of(node, struct thread_stat, rb);
123 if (st->tid == tid)
124 return st;
125 else if (tid < st->tid)
126 node = node->rb_left;
127 else
128 node = node->rb_right;
129 }
130
131 return NULL;
132}
133
134static void thread_stat_insert(struct thread_stat *new)
135{
136 struct rb_node **rb = &thread_stats.rb_node;
137 struct rb_node *parent = NULL;
138 struct thread_stat *p;
139
140 while (*rb) {
141 p = container_of(*rb, struct thread_stat, rb);
142 parent = *rb;
143
144 if (new->tid < p->tid)
145 rb = &(*rb)->rb_left;
146 else if (new->tid > p->tid)
147 rb = &(*rb)->rb_right;
148 else
149 BUG_ON("inserting invalid thread_stat\n");
150 }
151
152 rb_link_node(&new->rb, parent, rb);
153 rb_insert_color(&new->rb, &thread_stats);
154}
155
156static struct thread_stat *thread_stat_findnew_after_first(u32 tid)
157{
158 struct thread_stat *st;
159
160 st = thread_stat_find(tid);
161 if (st)
162 return st;
163
164 st = zalloc(sizeof(struct thread_stat));
David Ahern33d6aef2012-08-26 12:24:43 -0600165 if (!st) {
166 pr_err("memory allocation failed\n");
167 return NULL;
168 }
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900169
170 st->tid = tid;
171 INIT_LIST_HEAD(&st->seq_list);
172
173 thread_stat_insert(st);
174
175 return st;
176}
177
178static struct thread_stat *thread_stat_findnew_first(u32 tid);
179static struct thread_stat *(*thread_stat_findnew)(u32 tid) =
180 thread_stat_findnew_first;
181
182static struct thread_stat *thread_stat_findnew_first(u32 tid)
183{
184 struct thread_stat *st;
185
186 st = zalloc(sizeof(struct thread_stat));
David Ahern33d6aef2012-08-26 12:24:43 -0600187 if (!st) {
188 pr_err("memory allocation failed\n");
189 return NULL;
190 }
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900191 st->tid = tid;
192 INIT_LIST_HEAD(&st->seq_list);
193
194 rb_link_node(&st->rb, NULL, &thread_stats.rb_node);
195 rb_insert_color(&st->rb, &thread_stats);
196
197 thread_stat_findnew = thread_stat_findnew_after_first;
198 return st;
199}
200
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900201/* build simple key function one is bigger than two */
Ingo Molnar59f411b2010-01-31 08:27:58 +0100202#define SINGLE_KEY(member) \
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900203 static int lock_stat_key_ ## member(struct lock_stat *one, \
204 struct lock_stat *two) \
205 { \
206 return one->member > two->member; \
207 }
208
209SINGLE_KEY(nr_acquired)
210SINGLE_KEY(nr_contended)
211SINGLE_KEY(wait_time_total)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900212SINGLE_KEY(wait_time_max)
213
Marcin Slusarz9df03ab2011-02-22 18:47:15 +0100214static int lock_stat_key_wait_time_min(struct lock_stat *one,
215 struct lock_stat *two)
216{
217 u64 s1 = one->wait_time_min;
218 u64 s2 = two->wait_time_min;
219 if (s1 == ULLONG_MAX)
220 s1 = 0;
221 if (s2 == ULLONG_MAX)
222 s2 = 0;
223 return s1 > s2;
224}
225
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900226struct lock_key {
227 /*
228 * name: the value for specify by user
229 * this should be simpler than raw name of member
230 * e.g. nr_acquired -> acquired, wait_time_total -> wait_total
231 */
Ingo Molnar59f411b2010-01-31 08:27:58 +0100232 const char *name;
233 int (*key)(struct lock_stat*, struct lock_stat*);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900234};
235
Ingo Molnar59f411b2010-01-31 08:27:58 +0100236static const char *sort_key = "acquired";
237
238static int (*compare)(struct lock_stat *, struct lock_stat *);
239
240static struct rb_root result; /* place to store sorted data */
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900241
242#define DEF_KEY_LOCK(name, fn_suffix) \
243 { #name, lock_stat_key_ ## fn_suffix }
244struct lock_key keys[] = {
245 DEF_KEY_LOCK(acquired, nr_acquired),
246 DEF_KEY_LOCK(contended, nr_contended),
247 DEF_KEY_LOCK(wait_total, wait_time_total),
248 DEF_KEY_LOCK(wait_min, wait_time_min),
249 DEF_KEY_LOCK(wait_max, wait_time_max),
250
251 /* extra comparisons much complicated should be here */
252
253 { NULL, NULL }
254};
255
David Ahern33d6aef2012-08-26 12:24:43 -0600256static int select_key(void)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900257{
258 int i;
259
260 for (i = 0; keys[i].name; i++) {
261 if (!strcmp(keys[i].name, sort_key)) {
262 compare = keys[i].key;
David Ahern33d6aef2012-08-26 12:24:43 -0600263 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900264 }
265 }
266
David Ahern33d6aef2012-08-26 12:24:43 -0600267 pr_err("Unknown compare key: %s\n", sort_key);
268
269 return -1;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900270}
271
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900272static void insert_to_result(struct lock_stat *st,
Ingo Molnar59f411b2010-01-31 08:27:58 +0100273 int (*bigger)(struct lock_stat *, struct lock_stat *))
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900274{
275 struct rb_node **rb = &result.rb_node;
276 struct rb_node *parent = NULL;
277 struct lock_stat *p;
278
279 while (*rb) {
280 p = container_of(*rb, struct lock_stat, rb);
281 parent = *rb;
282
283 if (bigger(st, p))
284 rb = &(*rb)->rb_left;
285 else
286 rb = &(*rb)->rb_right;
287 }
288
289 rb_link_node(&st->rb, parent, rb);
290 rb_insert_color(&st->rb, &result);
291}
292
293/* returns left most element of result, and erase it */
294static struct lock_stat *pop_from_result(void)
295{
296 struct rb_node *node = result.rb_node;
297
298 if (!node)
299 return NULL;
300
301 while (node->rb_left)
302 node = node->rb_left;
303
304 rb_erase(node, &result);
305 return container_of(node, struct lock_stat, rb);
306}
307
Ingo Molnar59f411b2010-01-31 08:27:58 +0100308static struct lock_stat *lock_stat_findnew(void *addr, const char *name)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900309{
310 struct list_head *entry = lockhashentry(addr);
311 struct lock_stat *ret, *new;
312
313 list_for_each_entry(ret, entry, hash_entry) {
314 if (ret->addr == addr)
315 return ret;
316 }
317
318 new = zalloc(sizeof(struct lock_stat));
319 if (!new)
320 goto alloc_failed;
321
322 new->addr = addr;
323 new->name = zalloc(sizeof(char) * strlen(name) + 1);
Davidlohr Bueso0a98c7f2013-09-08 19:19:15 -0700324 if (!new->name) {
325 free(new);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900326 goto alloc_failed;
Davidlohr Bueso0a98c7f2013-09-08 19:19:15 -0700327 }
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900328
Davidlohr Bueso0a98c7f2013-09-08 19:19:15 -0700329 strcpy(new->name, name);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900330 new->wait_time_min = ULLONG_MAX;
331
332 list_add(&new->hash_entry, entry);
333 return new;
334
335alloc_failed:
David Ahern33d6aef2012-08-26 12:24:43 -0600336 pr_err("memory allocation failed\n");
337 return NULL;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900338}
339
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900340struct trace_lock_handler {
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300341 int (*acquire_event)(struct perf_evsel *evsel,
342 struct perf_sample *sample);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900343
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300344 int (*acquired_event)(struct perf_evsel *evsel,
345 struct perf_sample *sample);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900346
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300347 int (*contended_event)(struct perf_evsel *evsel,
348 struct perf_sample *sample);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900349
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300350 int (*release_event)(struct perf_evsel *evsel,
351 struct perf_sample *sample);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900352};
353
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900354static struct lock_seq_stat *get_seq(struct thread_stat *ts, void *addr)
355{
356 struct lock_seq_stat *seq;
357
358 list_for_each_entry(seq, &ts->seq_list, list) {
359 if (seq->addr == addr)
360 return seq;
361 }
362
363 seq = zalloc(sizeof(struct lock_seq_stat));
David Ahern33d6aef2012-08-26 12:24:43 -0600364 if (!seq) {
365 pr_err("memory allocation failed\n");
366 return NULL;
367 }
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900368 seq->state = SEQ_STATE_UNINITIALIZED;
369 seq->addr = addr;
370
371 list_add(&seq->list, &ts->seq_list);
372 return seq;
373}
374
Frederic Weisbecker10350ec2010-05-05 23:47:28 +0200375enum broken_state {
376 BROKEN_ACQUIRE,
377 BROKEN_ACQUIRED,
378 BROKEN_CONTENDED,
379 BROKEN_RELEASE,
380 BROKEN_MAX,
381};
382
383static int bad_hist[BROKEN_MAX];
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900384
Frederic Weisbecker84c7a212010-05-05 23:57:25 +0200385enum acquire_flags {
386 TRY_LOCK = 1,
387 READ_LOCK = 2,
388};
389
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300390static int report_lock_acquire_event(struct perf_evsel *evsel,
391 struct perf_sample *sample)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900392{
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300393 void *addr;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900394 struct lock_stat *ls;
395 struct thread_stat *ts;
396 struct lock_seq_stat *seq;
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300397 const char *name = perf_evsel__strval(evsel, sample, "name");
398 u64 tmp = perf_evsel__intval(evsel, sample, "lockdep_addr");
399 int flag = perf_evsel__intval(evsel, sample, "flag");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900400
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300401 memcpy(&addr, &tmp, sizeof(void *));
402
403 ls = lock_stat_findnew(addr, name);
David Ahern33d6aef2012-08-26 12:24:43 -0600404 if (!ls)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700405 return -ENOMEM;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900406 if (ls->discard)
David Ahern33d6aef2012-08-26 12:24:43 -0600407 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900408
Arnaldo Carvalho de Melo01d95522012-08-07 10:59:44 -0300409 ts = thread_stat_findnew(sample->tid);
David Ahern33d6aef2012-08-26 12:24:43 -0600410 if (!ts)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700411 return -ENOMEM;
David Ahern33d6aef2012-08-26 12:24:43 -0600412
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300413 seq = get_seq(ts, addr);
David Ahern33d6aef2012-08-26 12:24:43 -0600414 if (!seq)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700415 return -ENOMEM;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900416
417 switch (seq->state) {
418 case SEQ_STATE_UNINITIALIZED:
419 case SEQ_STATE_RELEASED:
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300420 if (!flag) {
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900421 seq->state = SEQ_STATE_ACQUIRING;
422 } else {
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300423 if (flag & TRY_LOCK)
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900424 ls->nr_trylock++;
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300425 if (flag & READ_LOCK)
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900426 ls->nr_readlock++;
427 seq->state = SEQ_STATE_READ_ACQUIRED;
428 seq->read_count = 1;
429 ls->nr_acquired++;
430 }
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900431 break;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900432 case SEQ_STATE_READ_ACQUIRED:
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300433 if (flag & READ_LOCK) {
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900434 seq->read_count++;
435 ls->nr_acquired++;
436 goto end;
437 } else {
438 goto broken;
439 }
440 break;
441 case SEQ_STATE_ACQUIRED:
442 case SEQ_STATE_ACQUIRING:
443 case SEQ_STATE_CONTENDED:
444broken:
445 /* broken lock sequence, discard it */
446 ls->discard = 1;
Frederic Weisbecker10350ec2010-05-05 23:47:28 +0200447 bad_hist[BROKEN_ACQUIRE]++;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900448 list_del(&seq->list);
449 free(seq);
450 goto end;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900451 default:
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900452 BUG_ON("Unknown state of lock sequence found!\n");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900453 break;
454 }
455
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900456 ls->nr_acquire++;
Arnaldo Carvalho de Melo01d95522012-08-07 10:59:44 -0300457 seq->prev_event_time = sample->time;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900458end:
David Ahern33d6aef2012-08-26 12:24:43 -0600459 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900460}
461
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300462static int report_lock_acquired_event(struct perf_evsel *evsel,
463 struct perf_sample *sample)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900464{
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300465 void *addr;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900466 struct lock_stat *ls;
467 struct thread_stat *ts;
468 struct lock_seq_stat *seq;
469 u64 contended_term;
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300470 const char *name = perf_evsel__strval(evsel, sample, "name");
471 u64 tmp = perf_evsel__intval(evsel, sample, "lockdep_addr");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900472
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300473 memcpy(&addr, &tmp, sizeof(void *));
474
475 ls = lock_stat_findnew(addr, name);
David Ahern33d6aef2012-08-26 12:24:43 -0600476 if (!ls)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700477 return -ENOMEM;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900478 if (ls->discard)
David Ahern33d6aef2012-08-26 12:24:43 -0600479 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900480
Arnaldo Carvalho de Melo01d95522012-08-07 10:59:44 -0300481 ts = thread_stat_findnew(sample->tid);
David Ahern33d6aef2012-08-26 12:24:43 -0600482 if (!ts)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700483 return -ENOMEM;
David Ahern33d6aef2012-08-26 12:24:43 -0600484
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300485 seq = get_seq(ts, addr);
David Ahern33d6aef2012-08-26 12:24:43 -0600486 if (!seq)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700487 return -ENOMEM;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900488
489 switch (seq->state) {
490 case SEQ_STATE_UNINITIALIZED:
491 /* orphan event, do nothing */
David Ahern33d6aef2012-08-26 12:24:43 -0600492 return 0;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900493 case SEQ_STATE_ACQUIRING:
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900494 break;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900495 case SEQ_STATE_CONTENDED:
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300496 contended_term = sample->time - seq->prev_event_time;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900497 ls->wait_time_total += contended_term;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900498 if (contended_term < ls->wait_time_min)
499 ls->wait_time_min = contended_term;
Frederic Weisbecker90c0e5f2010-05-07 02:33:42 +0200500 if (ls->wait_time_max < contended_term)
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900501 ls->wait_time_max = contended_term;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900502 break;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900503 case SEQ_STATE_RELEASED:
504 case SEQ_STATE_ACQUIRED:
505 case SEQ_STATE_READ_ACQUIRED:
506 /* broken lock sequence, discard it */
507 ls->discard = 1;
Frederic Weisbecker10350ec2010-05-05 23:47:28 +0200508 bad_hist[BROKEN_ACQUIRED]++;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900509 list_del(&seq->list);
510 free(seq);
511 goto end;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900512 default:
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900513 BUG_ON("Unknown state of lock sequence found!\n");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900514 break;
515 }
516
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900517 seq->state = SEQ_STATE_ACQUIRED;
518 ls->nr_acquired++;
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300519 seq->prev_event_time = sample->time;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900520end:
David Ahern33d6aef2012-08-26 12:24:43 -0600521 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900522}
523
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300524static int report_lock_contended_event(struct perf_evsel *evsel,
525 struct perf_sample *sample)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900526{
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300527 void *addr;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900528 struct lock_stat *ls;
529 struct thread_stat *ts;
530 struct lock_seq_stat *seq;
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300531 const char *name = perf_evsel__strval(evsel, sample, "name");
532 u64 tmp = perf_evsel__intval(evsel, sample, "lockdep_addr");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900533
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300534 memcpy(&addr, &tmp, sizeof(void *));
535
536 ls = lock_stat_findnew(addr, name);
David Ahern33d6aef2012-08-26 12:24:43 -0600537 if (!ls)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700538 return -ENOMEM;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900539 if (ls->discard)
David Ahern33d6aef2012-08-26 12:24:43 -0600540 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900541
Arnaldo Carvalho de Melo01d95522012-08-07 10:59:44 -0300542 ts = thread_stat_findnew(sample->tid);
David Ahern33d6aef2012-08-26 12:24:43 -0600543 if (!ts)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700544 return -ENOMEM;
David Ahern33d6aef2012-08-26 12:24:43 -0600545
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300546 seq = get_seq(ts, addr);
David Ahern33d6aef2012-08-26 12:24:43 -0600547 if (!seq)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700548 return -ENOMEM;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900549
550 switch (seq->state) {
551 case SEQ_STATE_UNINITIALIZED:
552 /* orphan event, do nothing */
David Ahern33d6aef2012-08-26 12:24:43 -0600553 return 0;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900554 case SEQ_STATE_ACQUIRING:
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900555 break;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900556 case SEQ_STATE_RELEASED:
557 case SEQ_STATE_ACQUIRED:
558 case SEQ_STATE_READ_ACQUIRED:
559 case SEQ_STATE_CONTENDED:
560 /* broken lock sequence, discard it */
561 ls->discard = 1;
Frederic Weisbecker10350ec2010-05-05 23:47:28 +0200562 bad_hist[BROKEN_CONTENDED]++;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900563 list_del(&seq->list);
564 free(seq);
565 goto end;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900566 default:
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900567 BUG_ON("Unknown state of lock sequence found!\n");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900568 break;
569 }
570
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900571 seq->state = SEQ_STATE_CONTENDED;
572 ls->nr_contended++;
Arnaldo Carvalho de Melo01d95522012-08-07 10:59:44 -0300573 seq->prev_event_time = sample->time;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900574end:
David Ahern33d6aef2012-08-26 12:24:43 -0600575 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900576}
577
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300578static int report_lock_release_event(struct perf_evsel *evsel,
579 struct perf_sample *sample)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900580{
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300581 void *addr;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900582 struct lock_stat *ls;
583 struct thread_stat *ts;
584 struct lock_seq_stat *seq;
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300585 const char *name = perf_evsel__strval(evsel, sample, "name");
586 u64 tmp = perf_evsel__intval(evsel, sample, "lockdep_addr");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900587
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300588 memcpy(&addr, &tmp, sizeof(void *));
589
590 ls = lock_stat_findnew(addr, name);
David Ahern33d6aef2012-08-26 12:24:43 -0600591 if (!ls)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700592 return -ENOMEM;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900593 if (ls->discard)
David Ahern33d6aef2012-08-26 12:24:43 -0600594 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900595
Arnaldo Carvalho de Melo01d95522012-08-07 10:59:44 -0300596 ts = thread_stat_findnew(sample->tid);
David Ahern33d6aef2012-08-26 12:24:43 -0600597 if (!ts)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700598 return -ENOMEM;
David Ahern33d6aef2012-08-26 12:24:43 -0600599
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300600 seq = get_seq(ts, addr);
David Ahern33d6aef2012-08-26 12:24:43 -0600601 if (!seq)
Davidlohr Buesob33492a2013-09-08 19:19:14 -0700602 return -ENOMEM;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900603
604 switch (seq->state) {
605 case SEQ_STATE_UNINITIALIZED:
606 goto end;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900607 case SEQ_STATE_ACQUIRED:
608 break;
609 case SEQ_STATE_READ_ACQUIRED:
610 seq->read_count--;
611 BUG_ON(seq->read_count < 0);
612 if (!seq->read_count) {
613 ls->nr_release++;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900614 goto end;
615 }
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900616 break;
617 case SEQ_STATE_ACQUIRING:
618 case SEQ_STATE_CONTENDED:
619 case SEQ_STATE_RELEASED:
620 /* broken lock sequence, discard it */
621 ls->discard = 1;
Frederic Weisbecker10350ec2010-05-05 23:47:28 +0200622 bad_hist[BROKEN_RELEASE]++;
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900623 goto free_seq;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900624 default:
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900625 BUG_ON("Unknown state of lock sequence found!\n");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900626 break;
627 }
628
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900629 ls->nr_release++;
630free_seq:
631 list_del(&seq->list);
632 free(seq);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900633end:
David Ahern33d6aef2012-08-26 12:24:43 -0600634 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900635}
636
637/* lock oriented handlers */
638/* TODO: handlers for CPU oriented, thread oriented */
Ingo Molnar59f411b2010-01-31 08:27:58 +0100639static struct trace_lock_handler report_lock_ops = {
640 .acquire_event = report_lock_acquire_event,
641 .acquired_event = report_lock_acquired_event,
642 .contended_event = report_lock_contended_event,
643 .release_event = report_lock_release_event,
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900644};
645
646static struct trace_lock_handler *trace_handler;
647
David Ahern33d6aef2012-08-26 12:24:43 -0600648static int perf_evsel__process_lock_acquire(struct perf_evsel *evsel,
Arnaldo Carvalho de Melo01d95522012-08-07 10:59:44 -0300649 struct perf_sample *sample)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900650{
Ingo Molnar59f411b2010-01-31 08:27:58 +0100651 if (trace_handler->acquire_event)
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300652 return trace_handler->acquire_event(evsel, sample);
653 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900654}
655
David Ahern33d6aef2012-08-26 12:24:43 -0600656static int perf_evsel__process_lock_acquired(struct perf_evsel *evsel,
Arnaldo Carvalho de Melo01d95522012-08-07 10:59:44 -0300657 struct perf_sample *sample)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900658{
David Ahern33d6aef2012-08-26 12:24:43 -0600659 if (trace_handler->acquired_event)
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300660 return trace_handler->acquired_event(evsel, sample);
661 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900662}
663
David Ahern33d6aef2012-08-26 12:24:43 -0600664static int perf_evsel__process_lock_contended(struct perf_evsel *evsel,
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300665 struct perf_sample *sample)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900666{
David Ahern33d6aef2012-08-26 12:24:43 -0600667 if (trace_handler->contended_event)
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300668 return trace_handler->contended_event(evsel, sample);
669 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900670}
671
David Ahern33d6aef2012-08-26 12:24:43 -0600672static int perf_evsel__process_lock_release(struct perf_evsel *evsel,
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300673 struct perf_sample *sample)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900674{
David Ahern33d6aef2012-08-26 12:24:43 -0600675 if (trace_handler->release_event)
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300676 return trace_handler->release_event(evsel, sample);
677 return 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900678}
679
Frederic Weisbecker10350ec2010-05-05 23:47:28 +0200680static void print_bad_events(int bad, int total)
681{
682 /* Output for debug, this have to be removed */
683 int i;
684 const char *name[4] =
685 { "acquire", "acquired", "contended", "release" };
686
687 pr_info("\n=== output for debug===\n\n");
Frederic Weisbecker5efe08c2010-05-06 04:55:22 +0200688 pr_info("bad: %d, total: %d\n", bad, total);
Davidlohr Bueso60a25cb2013-09-08 19:19:18 -0700689 pr_info("bad rate: %.2f %%\n", (double)bad / (double)total * 100);
Frederic Weisbecker10350ec2010-05-05 23:47:28 +0200690 pr_info("histogram of events caused bad sequence\n");
691 for (i = 0; i < BROKEN_MAX; i++)
692 pr_info(" %10s: %d\n", name[i], bad_hist[i]);
693}
694
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900695/* TODO: various way to print, coloring, nano or milli sec */
696static void print_result(void)
697{
698 struct lock_stat *st;
699 char cut_name[20];
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900700 int bad, total;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900701
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900702 pr_info("%20s ", "Name");
703 pr_info("%10s ", "acquired");
704 pr_info("%10s ", "contended");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900705
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900706 pr_info("%15s ", "total wait (ns)");
707 pr_info("%15s ", "max wait (ns)");
708 pr_info("%15s ", "min wait (ns)");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900709
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900710 pr_info("\n\n");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900711
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900712 bad = total = 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900713 while ((st = pop_from_result())) {
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900714 total++;
715 if (st->discard) {
716 bad++;
717 continue;
718 }
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900719 bzero(cut_name, 20);
720
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900721 if (strlen(st->name) < 16) {
722 /* output raw name */
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900723 pr_info("%20s ", st->name);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900724 } else {
725 strncpy(cut_name, st->name, 16);
726 cut_name[16] = '.';
727 cut_name[17] = '.';
728 cut_name[18] = '.';
729 cut_name[19] = '\0';
730 /* cut off name for saving output style */
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900731 pr_info("%20s ", cut_name);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900732 }
733
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900734 pr_info("%10u ", st->nr_acquired);
735 pr_info("%10u ", st->nr_contended);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900736
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200737 pr_info("%15" PRIu64 " ", st->wait_time_total);
738 pr_info("%15" PRIu64 " ", st->wait_time_max);
739 pr_info("%15" PRIu64 " ", st->wait_time_min == ULLONG_MAX ?
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900740 0 : st->wait_time_min);
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900741 pr_info("\n");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900742 }
Hitoshi Mitakee4cef1f2010-04-21 21:23:54 +0900743
Frederic Weisbecker10350ec2010-05-05 23:47:28 +0200744 print_bad_events(bad, total);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900745}
746
Arnaldo Carvalho de Melo80354582010-05-17 15:51:10 -0300747static bool info_threads, info_map;
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900748
749static void dump_threads(void)
750{
751 struct thread_stat *st;
752 struct rb_node *node;
753 struct thread *t;
754
755 pr_info("%10s: comm\n", "Thread ID");
756
757 node = rb_first(&thread_stats);
758 while (node) {
759 st = container_of(node, struct thread_stat, rb);
760 t = perf_session__findnew(session, st->tid);
761 pr_info("%10d: %s\n", st->tid, t->comm);
762 node = rb_next(node);
763 };
764}
765
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900766static void dump_map(void)
767{
768 unsigned int i;
769 struct lock_stat *st;
770
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900771 pr_info("Address of instance: name of class\n");
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900772 for (i = 0; i < LOCKHASH_SIZE; i++) {
773 list_for_each_entry(st, &lockhash_table[i], hash_entry) {
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900774 pr_info(" %p: %s\n", st->addr, st->name);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900775 }
776 }
777}
778
David Ahern33d6aef2012-08-26 12:24:43 -0600779static int dump_info(void)
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900780{
David Ahern33d6aef2012-08-26 12:24:43 -0600781 int rc = 0;
782
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900783 if (info_threads)
784 dump_threads();
785 else if (info_map)
786 dump_map();
David Ahern33d6aef2012-08-26 12:24:43 -0600787 else {
788 rc = -1;
789 pr_err("Unknown type of information\n");
790 }
791
792 return rc;
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900793}
794
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300795typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
796 struct perf_sample *sample);
797
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300798static int process_sample_event(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200799 union perf_event *event,
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300800 struct perf_sample *sample,
Arnaldo Carvalho de Melofcf65bf2012-08-07 09:58:03 -0300801 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200802 struct machine *machine)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200803{
Adrian Hunter314add62013-08-27 11:23:03 +0300804 struct thread *thread = machine__findnew_thread(machine, sample->pid,
805 sample->tid);
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200806
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200807 if (thread == NULL) {
808 pr_debug("problem processing %d event, skipping it.\n",
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200809 event->header.type);
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200810 return -1;
811 }
812
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300813 if (evsel->handler.func != NULL) {
814 tracepoint_handler f = evsel->handler.func;
815 return f(evsel, sample);
816 }
817
818 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200819}
820
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900821static void sort_result(void)
822{
823 unsigned int i;
824 struct lock_stat *st;
825
826 for (i = 0; i < LOCKHASH_SIZE; i++) {
827 list_for_each_entry(st, &lockhash_table[i], hash_entry) {
828 insert_to_result(st, compare);
829 }
830 }
831}
832
Davidlohr Bueso375eb2b2013-09-08 19:19:16 -0700833static const struct perf_evsel_str_handler lock_tracepoints[] = {
834 { "lock:lock_acquire", perf_evsel__process_lock_acquire, }, /* CONFIG_LOCKDEP */
835 { "lock:lock_acquired", perf_evsel__process_lock_acquired, }, /* CONFIG_LOCKDEP, CONFIG_LOCK_STAT */
836 { "lock:lock_contended", perf_evsel__process_lock_contended, }, /* CONFIG_LOCKDEP, CONFIG_LOCK_STAT */
837 { "lock:lock_release", perf_evsel__process_lock_release, }, /* CONFIG_LOCKDEP */
838};
839
840static int __cmd_report(bool display_info)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900841{
Davidlohr Bueso375eb2b2013-09-08 19:19:16 -0700842 int err = -EINVAL;
843 struct perf_tool eops = {
844 .sample = process_sample_event,
845 .comm = perf_event__process_comm,
846 .ordered_samples = true,
847 };
848
849 session = perf_session__new(input_name, O_RDONLY, 0, false, &eops);
850 if (!session) {
851 pr_err("Initializing perf session failed\n");
852 return -ENOMEM;
853 }
854
855 if (!perf_session__has_traces(session, "lock record"))
856 goto out_delete;
857
858 if (perf_session__set_tracepoints_handlers(session, lock_tracepoints)) {
859 pr_err("Initializing perf session tracepoint handlers failed\n");
860 goto out_delete;
861 }
862
863 if (select_key())
864 goto out_delete;
865
866 err = perf_session__process_events(session, &eops);
867 if (err)
868 goto out_delete;
869
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900870 setup_pager();
Davidlohr Bueso375eb2b2013-09-08 19:19:16 -0700871 if (display_info) /* used for info subcommand */
872 err = dump_info();
873 else {
874 sort_result();
875 print_result();
876 }
David Ahern33d6aef2012-08-26 12:24:43 -0600877
Davidlohr Bueso375eb2b2013-09-08 19:19:16 -0700878out_delete:
879 perf_session__delete(session);
880 return err;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900881}
882
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900883static int __cmd_record(int argc, const char **argv)
884{
Arnaldo Carvalho de Meloc75d98a2012-10-01 15:20:58 -0300885 const char *record_args[] = {
Jiri Olsa4a4d3712013-06-05 13:37:21 +0200886 "record", "-R", "-m", "1024", "-c", "1",
Arnaldo Carvalho de Meloc75d98a2012-10-01 15:20:58 -0300887 };
Davidlohr Bueso0a98c7f2013-09-08 19:19:15 -0700888 unsigned int rec_argc, i, j, ret;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900889 const char **rec_argv;
890
David Ahernd25dcba2012-08-09 10:35:37 -0600891 for (i = 0; i < ARRAY_SIZE(lock_tracepoints); i++) {
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300892 if (!is_valid_tracepoint(lock_tracepoints[i].name)) {
David Ahernd25dcba2012-08-09 10:35:37 -0600893 pr_err("tracepoint %s is not enabled. "
894 "Are CONFIG_LOCKDEP and CONFIG_LOCK_STAT enabled?\n",
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300895 lock_tracepoints[i].name);
David Ahernd25dcba2012-08-09 10:35:37 -0600896 return 1;
897 }
898 }
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900899
David Ahernd25dcba2012-08-09 10:35:37 -0600900 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
901 /* factor of 2 is for -e in front of each tracepoint */
902 rec_argc += 2 * ARRAY_SIZE(lock_tracepoints);
903
904 rec_argv = calloc(rec_argc + 1, sizeof(char *));
Davidlohr Bueso0a98c7f2013-09-08 19:19:15 -0700905 if (!rec_argv)
Chris Samuelce47dc52010-11-13 13:35:06 +1100906 return -ENOMEM;
907
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900908 for (i = 0; i < ARRAY_SIZE(record_args); i++)
909 rec_argv[i] = strdup(record_args[i]);
910
David Ahernd25dcba2012-08-09 10:35:37 -0600911 for (j = 0; j < ARRAY_SIZE(lock_tracepoints); j++) {
912 rec_argv[i++] = "-e";
Arnaldo Carvalho de Melo746f16e2012-09-24 10:52:12 -0300913 rec_argv[i++] = strdup(lock_tracepoints[j].name);
David Ahernd25dcba2012-08-09 10:35:37 -0600914 }
915
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900916 for (j = 1; j < (unsigned int)argc; j++, i++)
917 rec_argv[i] = argv[j];
918
919 BUG_ON(i != rec_argc);
920
Davidlohr Bueso0a98c7f2013-09-08 19:19:15 -0700921 ret = cmd_record(i, rec_argv, NULL);
922 free(rec_argv);
923 return ret;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900924}
925
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300926int cmd_lock(int argc, const char **argv, const char *prefix __maybe_unused)
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900927{
Arnaldo Carvalho de Meloc75d98a2012-10-01 15:20:58 -0300928 const struct option info_options[] = {
929 OPT_BOOLEAN('t', "threads", &info_threads,
930 "dump thread list in perf.data"),
931 OPT_BOOLEAN('m', "map", &info_map,
932 "map of lock instances (address:name table)"),
933 OPT_END()
934 };
935 const struct option lock_options[] = {
936 OPT_STRING('i', "input", &input_name, "file", "input file name"),
937 OPT_INCR('v', "verbose", &verbose, "be more verbose (show symbol address, etc)"),
938 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, "dump raw trace in ASCII"),
939 OPT_END()
940 };
941 const struct option report_options[] = {
942 OPT_STRING('k', "key", &sort_key, "acquired",
943 "key for sorting (acquired / contended / wait_total / wait_max / wait_min)"),
944 /* TODO: type */
945 OPT_END()
946 };
947 const char * const info_usage[] = {
948 "perf lock info [<options>]",
949 NULL
950 };
951 const char * const lock_usage[] = {
952 "perf lock [<options>] {record|report|script|info}",
953 NULL
954 };
955 const char * const report_usage[] = {
956 "perf lock report [<options>]",
957 NULL
958 };
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900959 unsigned int i;
David Ahern33d6aef2012-08-26 12:24:43 -0600960 int rc = 0;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900961
962 symbol__init();
963 for (i = 0; i < LOCKHASH_SIZE; i++)
964 INIT_LIST_HEAD(lockhash_table + i);
965
966 argc = parse_options(argc, argv, lock_options, lock_usage,
967 PARSE_OPT_STOP_AT_NON_OPTION);
968 if (!argc)
969 usage_with_options(lock_usage, lock_options);
970
971 if (!strncmp(argv[0], "rec", 3)) {
972 return __cmd_record(argc, argv);
Ingo Molnar59f411b2010-01-31 08:27:58 +0100973 } else if (!strncmp(argv[0], "report", 6)) {
974 trace_handler = &report_lock_ops;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900975 if (argc) {
976 argc = parse_options(argc, argv,
Ingo Molnar59f411b2010-01-31 08:27:58 +0100977 report_options, report_usage, 0);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900978 if (argc)
Ingo Molnar59f411b2010-01-31 08:27:58 +0100979 usage_with_options(report_usage, report_options);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900980 }
Davidlohr Bueso375eb2b2013-09-08 19:19:16 -0700981 rc = __cmd_report(false);
Ingo Molnar133dc4c2010-11-16 18:45:39 +0100982 } else if (!strcmp(argv[0], "script")) {
983 /* Aliased to 'perf script' */
984 return cmd_script(argc, argv, prefix);
Hitoshi Mitake26242d82010-05-03 14:12:00 +0900985 } else if (!strcmp(argv[0], "info")) {
986 if (argc) {
987 argc = parse_options(argc, argv,
988 info_options, info_usage, 0);
989 if (argc)
990 usage_with_options(info_usage, info_options);
991 }
Ingo Molnar59f411b2010-01-31 08:27:58 +0100992 /* recycling report_lock_ops */
993 trace_handler = &report_lock_ops;
Davidlohr Bueso375eb2b2013-09-08 19:19:16 -0700994 rc = __cmd_report(true);
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +0900995 } else {
996 usage_with_options(lock_usage, lock_options);
997 }
998
David Ahern33d6aef2012-08-26 12:24:43 -0600999 return rc;
Hitoshi Mitake9b5e3502010-01-30 20:43:33 +09001000}