perf trace: Let the perf_evlist__mmap autosize the number of pages to use
tip-bot for Arnaldo Carvalho de Melo
merge botCommit-ID: 38d5447d64f367d1f4804ed5c7048d39de4d3311 Gitweb: http://git.kernel.org/tip/38d5447d64f367d1f4804ed5c7048d39de4d3311 Author: Arnaldo Carvalho de Melo <[email protected]> AuthorDate: Fri, 12 Dec 2014 17:28:32 -0300 Committer: Arnaldo Carvalho de Melo <[email protected]> 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 <[email protected]>
Cc Borislav Petkov <[email protected]>
Cc David Ahern <[email protected]>
Cc Don Zickus <[email protected]>
Cc Frederic Weisbecker <[email protected]>
Cc Jiri Olsa <[email protected]>
Cc Mike Galbraith <[email protected]>
Cc Namhyung Kim <[email protected]>
Cc Paul Mackerras <[email protected]>
Cc Peter Zijlstra <[email protected]>
Cc Stephane Eranian <[email protected]>
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
--- tools/perf/builtin-trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
tools/perf/builtin-trace.c +1 -1
@@ -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,