Commit-ID: 9a75606ca06d94aab1ed0dbe96935e3f89dfb81c Gitweb: http://git.kernel.org/tip/9a75606ca06d94aab1ed0dbe96935e3f89dfb81c Author: Namhyung Kim <namhy...@kernel.org> AuthorDate: Mon, 2 Mar 2015 12:13:33 +0900 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Mon, 2 Mar 2015 12:04:45 -0300
perf record: Document --group option The 'perf record --group' option lacks documentation and confuses users. As -e/--event option already supports group spec, it should not be used anymore. Also add a short description of event group itself. Reported-by: Stephane Eranian <eran...@google.com> Signed-off-by: Namhyung Kim <namhy...@kernel.org> Cc: Jiri Olsa <jo...@redhat.com> Cc: Peter Zijlstra <a.p.zijls...@chello.nl> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/r/1425266013-5034-1-git-send-email-namhy...@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/Documentation/perf-record.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 4d66894..355c4f5 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -55,6 +55,11 @@ OPTIONS If you want to profile write accesses in [0x1000~1008), just set 'mem:0x1000/8:w'. + - a group of events surrounded by a pair of brace ("{event1,event2,...}"). + Each event is separated by commas and the group should be quoted to + prevent the shell interpretation. You also need to use --group on + "perf report" to view group events together. + --filter=<filter>:: Event filter. @@ -104,6 +109,10 @@ OPTIONS specification with appended unit character - B/K/M/G. The size is rounded up to have nearest pages power of two value. +--group:: + Put all events in a single event group. This precedes the --event + option and remains only for backward compatibility. See --event. + -g:: Enables call-graph (stack chain/backtrace) recording. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
