Messages in this thread Patch in this message | | | Date | Wed, 17 Dec 2014 22:28:58 -0800 | From | tip-bot for Arnaldo Carvalho de Melo <> | Subject | [tip:perf/urgent] perf trace: Let the perf_evlist__mmap autosize the number of pages to use |
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Commit-ID: 38d5447d64f367d1f4804ed5c7048d39de4d3311 Gitweb: http://git.kernel.org/tip/38d5447d64f367d1f4804ed5c7048d39de4d3311 Author: Arnaldo Carvalho de Melo <acme@redhat.com> AuthorDate: Fri, 12 Dec 2014 17:28:32 -0300 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> CommitDate: Tue, 16 Dec 2014 13:38:26 -0300
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> --- tools/perf/builtin-trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 327541e..badfabc 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,
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