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authorJiri Olsa <jolsa@kernel.org>2017-01-09 12:51:59 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-01-11 22:48:02 +0300
commit0c5824498e8bd5b7d30dc03448cd89efaee4bead (patch)
tree67f7b3faa4cf8a38419e1e274aea33995451b02a /tools/perf/util/evlist.c
parentdc0c6127c231d4d264570497a916fa19740c915b (diff)
downloadlinux-0c5824498e8bd5b7d30dc03448cd89efaee4bead.tar.xz
perf record: Add switch-output size warning
Adding switch-output size warning if the requested size of lower than the wakeup ring buffer size. $ perf record --switch-output=1K ls WARNING: switch-output data size lower than wakeup kernel buffer size (258K) expect bigger perf.data sizes ... Signed-off-by: Jiri Olsa <jolsa@kernel.org> Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1483955520-29063-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
-rw-r--r--tools/perf/util/evlist.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index dc4df3d2660e..b601f2814a30 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -1184,7 +1184,7 @@ unsigned long perf_event_mlock_kb_in_pages(void)
return pages;
}
-static size_t perf_evlist__mmap_size(unsigned long pages)
+size_t perf_evlist__mmap_size(unsigned long pages)
{
if (pages == UINT_MAX)
pages = perf_event_mlock_kb_in_pages();