please discard this patch, may the right way to use cgroup with multiple events like following:
perf stat -e cycles -e cache-misses -a -I 1000 -G test,test 2018-01-25 23:00 GMT+08:00 weiping zhang <[email protected]>: > if use -G and with multiple events, only the first event has > correct cgroup setting, all other events have a wroung setting. > > reproduce: > 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 <[email protected]> > --- > tools/perf/util/cgroup.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/tools/perf/util/cgroup.c b/tools/perf/util/cgroup.c > index d9ffc1e..b50bfd1 100644 > --- a/tools/perf/util/cgroup.c > +++ b/tools/perf/util/cgroup.c > @@ -137,7 +137,8 @@ static int add_cgroup(struct perf_evlist *evlist, char > *str) > > return -1; > found: > - counter->cgrp = cgrp; > + evlist__for_each_entry(evlist, counter) > + counter->cgrp = cgrp; > return 0; > } > > -- > 2.9.4 >
