[PATCH 1/2] perf tools: Fix sample size bit operations

Frederic Weisbecker
2011-05-23T11:06:39Z

What we want is to count the number of bits in the mask,
not some other random operation written in the middle
of the night.

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: Stephane Eranian <eranian@google.com>
---
tools/perf/util/event.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 17c1c3c..d3fa7e4 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -42,7 +42,7 @@ int perf_sample_size(u64 sample_type)
int i;

for (i = 0; i < 64; i++) {
- if ((mask << i) & 1)
+ if (mask & (1 << i))
size++;
}

--
1.7.3.2