From 9df03abeda3d928ecdedc0f427336931eac0a477 Mon Sep 17 00:00:00 2001 From: Marcin Slusarz Date: Tue, 22 Feb 2011 18:47:15 +0100 Subject: [PATCH] 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 Cc: Hitoshi Mitake Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra LKML-Reference: <20110222174715.GC9687@joi.lan> Signed-off-by: Marcin Slusarz Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-lock.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) 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