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authorArnaldo Carvalho de Melo <acme@redhat.com>2014-12-12 21:28:32 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-12-16 17:38:26 +0100
commit38d5447d64f367d1f4804ed5c7048d39de4d3311 (patch)
treed4f646180b39bef8d53f99144c8126b97b7128e4 /tools
parentperf evlist: Improve the strerror_mmap method (diff)
downloadlinux-38d5447d64f367d1f4804ed5c7048d39de4d3311.tar.xz
linux-38d5447d64f367d1f4804ed5c7048d39de4d3311.zip
perf trace: Let the perf_evlist__mmap autosize the number of pages to use
So that normal users can run 'trace', we were using a hardcoded 1024 pages value that was more than the default /proc/sys/kernel/perf_event_mlock_kb setting. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-3banj3yh0sjz41obxtgiel3a@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-trace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 327541e43c7f..badfabc6a01f 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2485,7 +2485,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
.user_freq = UINT_MAX,
.user_interval = ULLONG_MAX,
.no_buffering = true,
- .mmap_pages = 1024,
+ .mmap_pages = UINT_MAX,
},
.output = stdout,
.show_comm = true,