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perf evlist: Fix inverted logic in perf_mmap__empty

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perf_evlist__mmap_consume() uses perf_mmap__empty() to judge whether
perf_mmap is empty and can be released. But the result is inverted so
fix it.

Signed-off-by: He Kuang <hekuang@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1428399071-7141-1-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
He Kuang 2015-04-07 17:31:10 +08:00 committed by Arnaldo Carvalho de Melo
parent 6645f3187f
commit 8ea92ceb74
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/evlist.c
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@ -695,7 +695,7 @@ union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx)
static bool perf_mmap__empty(struct perf_mmap *md)
{
return perf_mmap__read_head(md) != md->prev;
return perf_mmap__read_head(md) == md->prev;
}
static void perf_evlist__mmap_get(struct perf_evlist *evlist, int idx)