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SubjectRe: [PATCH v2] perf cgroup: simplify arguments if track multiple events for a cgroup
On Mon, Jan 29, 2018 at 11:48:09PM +0800, weiping zhang wrote:
> if use -G with one cgroup and -e with multiple events, only the first
> event has correct cgroup setting, all events from the second will track
> system-wide events.
>
> if user want track multiple events for a specific cgroup, user must give
> parameters like follow:
> $ perf stat -e e1 -e e2 -e e3 -G test,test,test
> this patch simplify this case, just type one cgroup, like following:
> $ perf stat -e e1 -e e2 -e e3 -G test
>
> $ mkdir -p /sys/fs/cgroup/perf_event/test
> $ perf stat -e cycles -e cache-misses -a -I 1000 -G test
>
> before:
> 1.001007226 <not counted> cycles test
> 1.001007226 7,506 cache-misses
>
> after:
> 1.000834097 <not counted> cycles test
> 1.000834097 <not counted> cache-misses test
>
> Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>

Acked-by: Jiri Olsa <jolsa@kernel.org>

thanks,
jirka

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