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authorFrederic Weisbecker <fweisbec@gmail.com>2010-05-05 23:47:28 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2010-05-09 13:45:26 +0200
commit10350ec362b48f79f3df8447c25813790075e27c (patch)
treeb822c3e43038e43abc1da04a8bf359a2f7af0ea1 /tools/perf/builtin-lock.c
parent26242d859c9be9eea61f7f19514e9d272ae8ce26 (diff)
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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>
Diffstat (limited to 'tools/perf/builtin-lock.c')
-rw-r--r--tools/perf/builtin-lock.c49
1 files changed, 29 insertions, 20 deletions
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index c4eb854ff7e..1e93179c2d3 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -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;