^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <inttypes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include "builtin.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include "perf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include "util/evlist.h" // for struct evsel_str_handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include "util/evsel.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "util/symbol.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "util/thread.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "util/header.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <subcmd/pager.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <subcmd/parse-options.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "util/trace-event.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "util/debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "util/session.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "util/tool.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "util/data.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <sys/prctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <semaphore.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <pthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <math.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <limits.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/zalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static struct perf_session *session;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* based on kernel/lockdep.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define LOCKHASH_BITS 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define LOCKHASH_SIZE (1UL << LOCKHASH_BITS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static struct list_head lockhash_table[LOCKHASH_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define __lockhashfn(key) hash_long((unsigned long)key, LOCKHASH_BITS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define lockhashentry(key) (lockhash_table + __lockhashfn((key)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct lock_stat {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct list_head hash_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct rb_node rb; /* used for sorting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * FIXME: evsel__intval() returns u64,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * so address of lockdep_map should be dealed as 64bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * Is there more better solution?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) void *addr; /* address of lockdep_map, used as ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) char *name; /* for strcpy(), we cannot use const */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) unsigned int nr_acquire;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) unsigned int nr_acquired;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) unsigned int nr_contended;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) unsigned int nr_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned int nr_readlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) unsigned int nr_trylock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* these times are in nano sec. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u64 avg_wait_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u64 wait_time_total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u64 wait_time_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) u64 wait_time_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int discard; /* flag of blacklist */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * States of lock_seq_stat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * UNINITIALIZED is required for detecting first event of acquire.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * As the nature of lock events, there is no guarantee
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * that the first event for the locks are acquire,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * it can be acquired, contended or release.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define SEQ_STATE_UNINITIALIZED 0 /* initial state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define SEQ_STATE_RELEASED 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define SEQ_STATE_ACQUIRING 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define SEQ_STATE_ACQUIRED 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define SEQ_STATE_READ_ACQUIRED 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define SEQ_STATE_CONTENDED 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * MAX_LOCK_DEPTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * Imported from include/linux/sched.h.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * Should this be synchronized?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define MAX_LOCK_DEPTH 48
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * struct lock_seq_stat:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * Place to put on state of one lock sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * 1) acquire -> acquired -> release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * 2) acquire -> contended -> acquired -> release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * 3) acquire (with read or try) -> release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * 4) Are there other patterns?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct lock_seq_stat {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u64 prev_event_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) void *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int read_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct thread_stat {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct rb_node rb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) u32 tid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct list_head seq_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static struct rb_root thread_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static struct thread_stat *thread_stat_find(u32 tid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct rb_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct thread_stat *st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) node = thread_stats.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) while (node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) st = container_of(node, struct thread_stat, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (st->tid == tid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) else if (tid < st->tid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) node = node->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) node = node->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static void thread_stat_insert(struct thread_stat *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct rb_node **rb = &thread_stats.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct rb_node *parent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) struct thread_stat *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) while (*rb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) p = container_of(*rb, struct thread_stat, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) parent = *rb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (new->tid < p->tid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) rb = &(*rb)->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) else if (new->tid > p->tid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) rb = &(*rb)->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) BUG_ON("inserting invalid thread_stat\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) rb_link_node(&new->rb, parent, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) rb_insert_color(&new->rb, &thread_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static struct thread_stat *thread_stat_findnew_after_first(u32 tid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct thread_stat *st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) st = thread_stat_find(tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (st)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) st = zalloc(sizeof(struct thread_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (!st) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) pr_err("memory allocation failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) st->tid = tid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) INIT_LIST_HEAD(&st->seq_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) thread_stat_insert(st);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) static struct thread_stat *thread_stat_findnew_first(u32 tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static struct thread_stat *(*thread_stat_findnew)(u32 tid) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) thread_stat_findnew_first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static struct thread_stat *thread_stat_findnew_first(u32 tid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) struct thread_stat *st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) st = zalloc(sizeof(struct thread_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) if (!st) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) pr_err("memory allocation failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) st->tid = tid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) INIT_LIST_HEAD(&st->seq_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) rb_link_node(&st->rb, NULL, &thread_stats.rb_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) rb_insert_color(&st->rb, &thread_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) thread_stat_findnew = thread_stat_findnew_after_first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /* build simple key function one is bigger than two */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #define SINGLE_KEY(member) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static int lock_stat_key_ ## member(struct lock_stat *one, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) struct lock_stat *two) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return one->member > two->member; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) SINGLE_KEY(nr_acquired)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) SINGLE_KEY(nr_contended)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) SINGLE_KEY(avg_wait_time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) SINGLE_KEY(wait_time_total)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) SINGLE_KEY(wait_time_max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static int lock_stat_key_wait_time_min(struct lock_stat *one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) struct lock_stat *two)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) u64 s1 = one->wait_time_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) u64 s2 = two->wait_time_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (s1 == ULLONG_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) s1 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (s2 == ULLONG_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) s2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) return s1 > s2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct lock_key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * name: the value for specify by user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * this should be simpler than raw name of member
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * e.g. nr_acquired -> acquired, wait_time_total -> wait_total
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) int (*key)(struct lock_stat*, struct lock_stat*);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static const char *sort_key = "acquired";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static int (*compare)(struct lock_stat *, struct lock_stat *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static struct rb_root result; /* place to store sorted data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) #define DEF_KEY_LOCK(name, fn_suffix) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) { #name, lock_stat_key_ ## fn_suffix }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct lock_key keys[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) DEF_KEY_LOCK(acquired, nr_acquired),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) DEF_KEY_LOCK(contended, nr_contended),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) DEF_KEY_LOCK(avg_wait, avg_wait_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) DEF_KEY_LOCK(wait_total, wait_time_total),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) DEF_KEY_LOCK(wait_min, wait_time_min),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) DEF_KEY_LOCK(wait_max, wait_time_max),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /* extra comparisons much complicated should be here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) { NULL, NULL }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static int select_key(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) for (i = 0; keys[i].name; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (!strcmp(keys[i].name, sort_key)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) compare = keys[i].key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) pr_err("Unknown compare key: %s\n", sort_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) static void insert_to_result(struct lock_stat *st,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) int (*bigger)(struct lock_stat *, struct lock_stat *))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct rb_node **rb = &result.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) struct rb_node *parent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) struct lock_stat *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) while (*rb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) p = container_of(*rb, struct lock_stat, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) parent = *rb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (bigger(st, p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) rb = &(*rb)->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) rb = &(*rb)->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) rb_link_node(&st->rb, parent, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) rb_insert_color(&st->rb, &result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) /* returns left most element of result, and erase it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static struct lock_stat *pop_from_result(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) struct rb_node *node = result.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (!node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) while (node->rb_left)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) node = node->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) rb_erase(node, &result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return container_of(node, struct lock_stat, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static struct lock_stat *lock_stat_findnew(void *addr, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) struct list_head *entry = lockhashentry(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct lock_stat *ret, *new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) list_for_each_entry(ret, entry, hash_entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (ret->addr == addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) new = zalloc(sizeof(struct lock_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (!new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) goto alloc_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) new->addr = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) new->name = zalloc(sizeof(char) * strlen(name) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (!new->name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) free(new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) goto alloc_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) strcpy(new->name, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) new->wait_time_min = ULLONG_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) list_add(&new->hash_entry, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) return new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) alloc_failed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) pr_err("memory allocation failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct trace_lock_handler {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) int (*acquire_event)(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) struct perf_sample *sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) int (*acquired_event)(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) struct perf_sample *sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) int (*contended_event)(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) struct perf_sample *sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) int (*release_event)(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) struct perf_sample *sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static struct lock_seq_stat *get_seq(struct thread_stat *ts, void *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct lock_seq_stat *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) list_for_each_entry(seq, &ts->seq_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (seq->addr == addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) seq = zalloc(sizeof(struct lock_seq_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (!seq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) pr_err("memory allocation failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) seq->state = SEQ_STATE_UNINITIALIZED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) seq->addr = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) list_add(&seq->list, &ts->seq_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) return seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) enum broken_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) BROKEN_ACQUIRE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) BROKEN_ACQUIRED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) BROKEN_CONTENDED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) BROKEN_RELEASE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) BROKEN_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static int bad_hist[BROKEN_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) enum acquire_flags {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) TRY_LOCK = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) READ_LOCK = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) static int report_lock_acquire_event(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) struct perf_sample *sample)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) void *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) struct lock_stat *ls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) struct thread_stat *ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) struct lock_seq_stat *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) const char *name = evsel__strval(evsel, sample, "name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) u64 tmp = evsel__intval(evsel, sample, "lockdep_addr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) int flag = evsel__intval(evsel, sample, "flags");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) memcpy(&addr, &tmp, sizeof(void *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) ls = lock_stat_findnew(addr, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (!ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (ls->discard)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) ts = thread_stat_findnew(sample->tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (!ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) seq = get_seq(ts, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (!seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) switch (seq->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) case SEQ_STATE_UNINITIALIZED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) case SEQ_STATE_RELEASED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (!flag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) seq->state = SEQ_STATE_ACQUIRING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (flag & TRY_LOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) ls->nr_trylock++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (flag & READ_LOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) ls->nr_readlock++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) seq->state = SEQ_STATE_READ_ACQUIRED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) seq->read_count = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) ls->nr_acquired++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) case SEQ_STATE_READ_ACQUIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (flag & READ_LOCK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) seq->read_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) ls->nr_acquired++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) goto broken;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) case SEQ_STATE_ACQUIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) case SEQ_STATE_ACQUIRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) case SEQ_STATE_CONTENDED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) broken:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) /* broken lock sequence, discard it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) ls->discard = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) bad_hist[BROKEN_ACQUIRE]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) list_del_init(&seq->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) free(seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) BUG_ON("Unknown state of lock sequence found!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) ls->nr_acquire++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) seq->prev_event_time = sample->time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) static int report_lock_acquired_event(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct perf_sample *sample)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) void *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) struct lock_stat *ls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) struct thread_stat *ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) struct lock_seq_stat *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) u64 contended_term;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) const char *name = evsel__strval(evsel, sample, "name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) u64 tmp = evsel__intval(evsel, sample, "lockdep_addr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) memcpy(&addr, &tmp, sizeof(void *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) ls = lock_stat_findnew(addr, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (!ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (ls->discard)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) ts = thread_stat_findnew(sample->tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) if (!ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) seq = get_seq(ts, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (!seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) switch (seq->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) case SEQ_STATE_UNINITIALIZED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) /* orphan event, do nothing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) case SEQ_STATE_ACQUIRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) case SEQ_STATE_CONTENDED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) contended_term = sample->time - seq->prev_event_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) ls->wait_time_total += contended_term;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (contended_term < ls->wait_time_min)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) ls->wait_time_min = contended_term;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (ls->wait_time_max < contended_term)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) ls->wait_time_max = contended_term;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) case SEQ_STATE_RELEASED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) case SEQ_STATE_ACQUIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) case SEQ_STATE_READ_ACQUIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /* broken lock sequence, discard it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) ls->discard = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) bad_hist[BROKEN_ACQUIRED]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) list_del_init(&seq->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) free(seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) BUG_ON("Unknown state of lock sequence found!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) seq->state = SEQ_STATE_ACQUIRED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ls->nr_acquired++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) ls->avg_wait_time = ls->nr_contended ? ls->wait_time_total/ls->nr_contended : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) seq->prev_event_time = sample->time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) static int report_lock_contended_event(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) struct perf_sample *sample)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) void *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct lock_stat *ls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) struct thread_stat *ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct lock_seq_stat *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) const char *name = evsel__strval(evsel, sample, "name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) u64 tmp = evsel__intval(evsel, sample, "lockdep_addr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) memcpy(&addr, &tmp, sizeof(void *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) ls = lock_stat_findnew(addr, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) if (!ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (ls->discard)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) ts = thread_stat_findnew(sample->tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (!ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) seq = get_seq(ts, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if (!seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) switch (seq->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) case SEQ_STATE_UNINITIALIZED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) /* orphan event, do nothing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) case SEQ_STATE_ACQUIRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) case SEQ_STATE_RELEASED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) case SEQ_STATE_ACQUIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) case SEQ_STATE_READ_ACQUIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) case SEQ_STATE_CONTENDED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) /* broken lock sequence, discard it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) ls->discard = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) bad_hist[BROKEN_CONTENDED]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) list_del_init(&seq->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) free(seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) BUG_ON("Unknown state of lock sequence found!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) seq->state = SEQ_STATE_CONTENDED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) ls->nr_contended++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) ls->avg_wait_time = ls->wait_time_total/ls->nr_contended;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) seq->prev_event_time = sample->time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) static int report_lock_release_event(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) struct perf_sample *sample)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) void *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) struct lock_stat *ls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) struct thread_stat *ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) struct lock_seq_stat *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) const char *name = evsel__strval(evsel, sample, "name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) u64 tmp = evsel__intval(evsel, sample, "lockdep_addr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) memcpy(&addr, &tmp, sizeof(void *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) ls = lock_stat_findnew(addr, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) if (!ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (ls->discard)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) ts = thread_stat_findnew(sample->tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) if (!ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) seq = get_seq(ts, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (!seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) switch (seq->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) case SEQ_STATE_UNINITIALIZED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) case SEQ_STATE_ACQUIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) case SEQ_STATE_READ_ACQUIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) seq->read_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) BUG_ON(seq->read_count < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (seq->read_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) ls->nr_release++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) case SEQ_STATE_ACQUIRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) case SEQ_STATE_CONTENDED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) case SEQ_STATE_RELEASED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) /* broken lock sequence, discard it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) ls->discard = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) bad_hist[BROKEN_RELEASE]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) goto free_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) BUG_ON("Unknown state of lock sequence found!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) ls->nr_release++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) free_seq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) list_del_init(&seq->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) free(seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) /* lock oriented handlers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) /* TODO: handlers for CPU oriented, thread oriented */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) static struct trace_lock_handler report_lock_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) .acquire_event = report_lock_acquire_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) .acquired_event = report_lock_acquired_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) .contended_event = report_lock_contended_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) .release_event = report_lock_release_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) static struct trace_lock_handler *trace_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) static int evsel__process_lock_acquire(struct evsel *evsel, struct perf_sample *sample)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) if (trace_handler->acquire_event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) return trace_handler->acquire_event(evsel, sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) static int evsel__process_lock_acquired(struct evsel *evsel, struct perf_sample *sample)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (trace_handler->acquired_event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) return trace_handler->acquired_event(evsel, sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) static int evsel__process_lock_contended(struct evsel *evsel, struct perf_sample *sample)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) if (trace_handler->contended_event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) return trace_handler->contended_event(evsel, sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) static int evsel__process_lock_release(struct evsel *evsel, struct perf_sample *sample)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) if (trace_handler->release_event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) return trace_handler->release_event(evsel, sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) static void print_bad_events(int bad, int total)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) /* Output for debug, this have to be removed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) const char *name[4] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) { "acquire", "acquired", "contended", "release" };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) pr_info("\n=== output for debug===\n\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) pr_info("bad: %d, total: %d\n", bad, total);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) pr_info("bad rate: %.2f %%\n", (double)bad / (double)total * 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) pr_info("histogram of events caused bad sequence\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) for (i = 0; i < BROKEN_MAX; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) pr_info(" %10s: %d\n", name[i], bad_hist[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) /* TODO: various way to print, coloring, nano or milli sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) static void print_result(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) struct lock_stat *st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) char cut_name[20];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) int bad, total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) pr_info("%20s ", "Name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) pr_info("%10s ", "acquired");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) pr_info("%10s ", "contended");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) pr_info("%15s ", "avg wait (ns)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) pr_info("%15s ", "total wait (ns)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) pr_info("%15s ", "max wait (ns)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) pr_info("%15s ", "min wait (ns)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) pr_info("\n\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) bad = total = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) while ((st = pop_from_result())) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) total++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) if (st->discard) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) bad++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) bzero(cut_name, 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) if (strlen(st->name) < 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) /* output raw name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) pr_info("%20s ", st->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) strncpy(cut_name, st->name, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) cut_name[16] = '.';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) cut_name[17] = '.';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) cut_name[18] = '.';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) cut_name[19] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) /* cut off name for saving output style */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) pr_info("%20s ", cut_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) pr_info("%10u ", st->nr_acquired);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) pr_info("%10u ", st->nr_contended);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) pr_info("%15" PRIu64 " ", st->avg_wait_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) pr_info("%15" PRIu64 " ", st->wait_time_total);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) pr_info("%15" PRIu64 " ", st->wait_time_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) pr_info("%15" PRIu64 " ", st->wait_time_min == ULLONG_MAX ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) 0 : st->wait_time_min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) pr_info("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) print_bad_events(bad, total);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) static bool info_threads, info_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) static void dump_threads(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) struct thread_stat *st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) struct rb_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) struct thread *t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) pr_info("%10s: comm\n", "Thread ID");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) node = rb_first(&thread_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) while (node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) st = container_of(node, struct thread_stat, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) t = perf_session__findnew(session, st->tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) pr_info("%10d: %s\n", st->tid, thread__comm_str(t));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) node = rb_next(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) thread__put(t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) static void dump_map(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) struct lock_stat *st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) pr_info("Address of instance: name of class\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) for (i = 0; i < LOCKHASH_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) list_for_each_entry(st, &lockhash_table[i], hash_entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) pr_info(" %p: %s\n", st->addr, st->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) static int dump_info(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) if (info_threads)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) dump_threads();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) else if (info_map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) dump_map();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) rc = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) pr_err("Unknown type of information\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) typedef int (*tracepoint_handler)(struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) struct perf_sample *sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) static int process_sample_event(struct perf_tool *tool __maybe_unused,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) union perf_event *event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) struct perf_sample *sample,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) struct evsel *evsel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) struct machine *machine)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) struct thread *thread = machine__findnew_thread(machine, sample->pid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) sample->tid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) if (thread == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) pr_debug("problem processing %d event, skipping it.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) event->header.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) if (evsel->handler != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) tracepoint_handler f = evsel->handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) err = f(evsel, sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) thread__put(thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) static void sort_result(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) struct lock_stat *st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) for (i = 0; i < LOCKHASH_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) list_for_each_entry(st, &lockhash_table[i], hash_entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) insert_to_result(st, compare);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) static const struct evsel_str_handler lock_tracepoints[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) { "lock:lock_acquire", evsel__process_lock_acquire, }, /* CONFIG_LOCKDEP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) { "lock:lock_acquired", evsel__process_lock_acquired, }, /* CONFIG_LOCKDEP, CONFIG_LOCK_STAT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) { "lock:lock_contended", evsel__process_lock_contended, }, /* CONFIG_LOCKDEP, CONFIG_LOCK_STAT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) { "lock:lock_release", evsel__process_lock_release, }, /* CONFIG_LOCKDEP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) static bool force;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) static int __cmd_report(bool display_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) int err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) struct perf_tool eops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) .sample = process_sample_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) .comm = perf_event__process_comm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) .namespaces = perf_event__process_namespaces,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) .ordered_events = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) struct perf_data data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) .path = input_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) .mode = PERF_DATA_MODE_READ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) .force = force,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) session = perf_session__new(&data, false, &eops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (IS_ERR(session)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) pr_err("Initializing perf session failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) return PTR_ERR(session);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) symbol__init(&session->header.env);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) if (!perf_session__has_traces(session, "lock record"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) goto out_delete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) if (perf_session__set_tracepoints_handlers(session, lock_tracepoints)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) pr_err("Initializing perf session tracepoint handlers failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) goto out_delete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) if (select_key())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) goto out_delete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) err = perf_session__process_events(session);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) goto out_delete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) setup_pager();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) if (display_info) /* used for info subcommand */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) err = dump_info();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) sort_result();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) print_result();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) out_delete:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) perf_session__delete(session);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) static int __cmd_record(int argc, const char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) const char *record_args[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) "record", "-R", "-m", "1024", "-c", "1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) unsigned int rec_argc, i, j, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) const char **rec_argv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) for (i = 0; i < ARRAY_SIZE(lock_tracepoints); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) if (!is_valid_tracepoint(lock_tracepoints[i].name)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) pr_err("tracepoint %s is not enabled. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) "Are CONFIG_LOCKDEP and CONFIG_LOCK_STAT enabled?\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) lock_tracepoints[i].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) rec_argc = ARRAY_SIZE(record_args) + argc - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) /* factor of 2 is for -e in front of each tracepoint */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) rec_argc += 2 * ARRAY_SIZE(lock_tracepoints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) rec_argv = calloc(rec_argc + 1, sizeof(char *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) if (!rec_argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) for (i = 0; i < ARRAY_SIZE(record_args); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) rec_argv[i] = strdup(record_args[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) for (j = 0; j < ARRAY_SIZE(lock_tracepoints); j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) rec_argv[i++] = "-e";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) rec_argv[i++] = strdup(lock_tracepoints[j].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) for (j = 1; j < (unsigned int)argc; j++, i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) rec_argv[i] = argv[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) BUG_ON(i != rec_argc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) ret = cmd_record(i, rec_argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) free(rec_argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) int cmd_lock(int argc, const char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) const struct option lock_options[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) OPT_STRING('i', "input", &input_name, "file", "input file name"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) OPT_INCR('v', "verbose", &verbose, "be more verbose (show symbol address, etc)"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, "dump raw trace in ASCII"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) OPT_END()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) const struct option info_options[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) OPT_BOOLEAN('t', "threads", &info_threads,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) "dump thread list in perf.data"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) OPT_BOOLEAN('m', "map", &info_map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) "map of lock instances (address:name table)"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) OPT_PARENT(lock_options)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) const struct option report_options[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) OPT_STRING('k', "key", &sort_key, "acquired",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) "key for sorting (acquired / contended / avg_wait / wait_total / wait_max / wait_min)"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) /* TODO: type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) OPT_PARENT(lock_options)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) const char * const info_usage[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) "perf lock info [<options>]",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) const char *const lock_subcommands[] = { "record", "report", "script",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) "info", NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) const char *lock_usage[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) const char * const report_usage[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) "perf lock report [<options>]",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) for (i = 0; i < LOCKHASH_SIZE; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) INIT_LIST_HEAD(lockhash_table + i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) argc = parse_options_subcommand(argc, argv, lock_options, lock_subcommands,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) lock_usage, PARSE_OPT_STOP_AT_NON_OPTION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) if (!argc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) usage_with_options(lock_usage, lock_options);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) if (!strncmp(argv[0], "rec", 3)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) return __cmd_record(argc, argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) } else if (!strncmp(argv[0], "report", 6)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) trace_handler = &report_lock_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) if (argc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) argc = parse_options(argc, argv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) report_options, report_usage, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) if (argc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) usage_with_options(report_usage, report_options);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) rc = __cmd_report(false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) } else if (!strcmp(argv[0], "script")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) /* Aliased to 'perf script' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) return cmd_script(argc, argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) } else if (!strcmp(argv[0], "info")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) if (argc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) argc = parse_options(argc, argv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) info_options, info_usage, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) if (argc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) usage_with_options(info_usage, info_options);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) /* recycling report_lock_ops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) trace_handler = &report_lock_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) rc = __cmd_report(true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) usage_with_options(lock_usage, lock_options);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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