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perf: Cleanup perf lock broken states 

Use enum to get a human view of bad_hist indexes and
put bad histogram output in its own function.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
This commit is contained in:
Frederic Weisbecker 2010-05-05 23:47:28 +02:00
parent 26242d859c
commit 10350ec362
1 changed files with 29 additions and 20 deletions
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49
tools/perf/builtin-lock.c
View File

@ -387,7 +387,15 @@ static struct lock_seq_stat *get_seq(struct thread_stat *ts, void *addr)
return seq;
}
static int bad_hist[4];
enum broken_state {
BROKEN_ACQUIRE,
BROKEN_ACQUIRED,
BROKEN_CONTENDED,
BROKEN_RELEASE,
BROKEN_MAX,
};
static int bad_hist[BROKEN_MAX];
static void
report_lock_acquire_event(struct trace_acquire_event *acquire_event,
@ -437,7 +445,7 @@ report_lock_acquire_event(struct trace_acquire_event *acquire_event,
broken:
/* broken lock sequence, discard it */
ls->discard = 1;
bad_hist[0]++;
bad_hist[BROKEN_ACQUIRE]++;
list_del(&seq->list);
free(seq);
goto end;
@ -481,7 +489,6 @@ report_lock_acquired_event(struct trace_acquired_event *acquired_event,
case SEQ_STATE_CONTENDED:
contended_term = timestamp - seq->prev_event_time;
ls->wait_time_total += contended_term;
if (contended_term < ls->wait_time_min)
ls->wait_time_min = contended_term;
else if (ls->wait_time_max < contended_term)
@ -492,7 +499,7 @@ report_lock_acquired_event(struct trace_acquired_event *acquired_event,
case SEQ_STATE_READ_ACQUIRED:
/* broken lock sequence, discard it */
ls->discard = 1;
bad_hist[1]++;
bad_hist[BROKEN_ACQUIRED]++;
list_del(&seq->list);
free(seq);
goto end;
@ -540,7 +547,7 @@ report_lock_contended_event(struct trace_contended_event *contended_event,
case SEQ_STATE_CONTENDED:
/* broken lock sequence, discard it */
ls->discard = 1;
bad_hist[2]++;
bad_hist[BROKEN_CONTENDED]++;
list_del(&seq->list);
free(seq);
goto end;
@ -594,7 +601,7 @@ report_lock_release_event(struct trace_release_event *release_event,
case SEQ_STATE_RELEASED:
/* broken lock sequence, discard it */
ls->discard = 1;
bad_hist[3]++;
bad_hist[BROKEN_RELEASE]++;
goto free_seq;
break;
default:
@ -713,6 +720,21 @@ process_raw_event(void *data, int cpu, u64 timestamp, struct thread *thread)
process_lock_release_event(data, event, cpu, timestamp, thread);
}
static void print_bad_events(int bad, int total)
{
/* Output for debug, this have to be removed */
int i;
const char *name[4] =
{ "acquire", "acquired", "contended", "release" };
pr_info("\n=== output for debug===\n\n");
pr_info("bad:%d, total:%d\n", bad, total);
pr_info("bad rate:%f\n", (double)(bad / total));
pr_info("histogram of events caused bad sequence\n");
for (i = 0; i < BROKEN_MAX; i++)
pr_info(" %10s: %d\n", name[i], bad_hist[i]);
}
/* TODO: various way to print, coloring, nano or milli sec */
static void print_result(void)
{
@ -762,20 +784,7 @@ static void print_result(void)
pr_info("\n");
}
{
/* Output for debug, this have to be removed */
int i;
const char *name[4] =
{ "acquire", "acquired", "contended", "release" };
pr_debug("\n=== output for debug===\n\n");
pr_debug("bad:%d, total:%d\n", bad, total);
pr_debug("bad rate:%f\n", (double)(bad / total));
pr_debug("histogram of events caused bad sequence\n");
for (i = 0; i < 4; i++)
pr_debug(" %10s: %d\n", name[i], bad_hist[i]);
}
print_bad_events(bad, total);
}
static int info_threads;