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authorMarcin Slusarz <marcin.slusarz@gmail.com>2011-02-22 18:47:15 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-03-16 09:05:58 -0300
commit9df03abeda3d928ecdedc0f427336931eac0a477 (patch)
tree4cb694e1f315b5d78ffd446a0407dcf7d172578f /tools
parent58d406ed6a5f1ca4bc1dba5390b718c67847fa5f (diff)
perf lock: Fix sorting by wait_min
If lock was uncontended, wait_time_min == ULLONG_MAX, so we need to handle this case differently to show high wait times first Acked-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20110222174715.GC9687@joi.lan> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-lock.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index 2e93f99b1480..7a2a79d2cf2c 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -202,9 +202,20 @@ static struct thread_stat *thread_stat_findnew_first(u32 tid)
SINGLE_KEY(nr_acquired)
SINGLE_KEY(nr_contended)
SINGLE_KEY(wait_time_total)
-SINGLE_KEY(wait_time_min)
SINGLE_KEY(wait_time_max)
+static int lock_stat_key_wait_time_min(struct lock_stat *one,
+ struct lock_stat *two)
+{
+ u64 s1 = one->wait_time_min;
+ u64 s2 = two->wait_time_min;
+ if (s1 == ULLONG_MAX)
+ s1 = 0;
+ if (s2 == ULLONG_MAX)
+ s2 = 0;
+ return s1 > s2;
+}
+
struct lock_key {
/*
* name: the value for specify by user

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