Messages in this thread Patch in this message | | | Date | Wed, 21 Apr 2021 12:18:23 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH v4 3/4] perf-stat: introduce config stat.bpf-counter-events |
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On Tue, Apr 20, 2021 at 09:21:32PM +0000, Song Liu wrote: > > > > On Apr 20, 2021, at 10:31 AM, Jiri Olsa <jolsa@redhat.com> wrote: > > > > On Mon, Apr 19, 2021 at 01:36:48PM -0700, Song Liu wrote: > > > > SNIP > > > >> if (stat_config.initial_delay < 0) { > >> @@ -784,11 +790,11 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx) > >> if (affinity__setup(&affinity) < 0) > >> return -1; > >> > >> - if (target__has_bpf(&target)) { > >> - evlist__for_each_entry(evsel_list, counter) { > >> - if (bpf_counter__load(counter, &target)) > >> - return -1; > >> - } > >> + evlist__for_each_entry(evsel_list, counter) { > >> + if (bpf_counter__load(counter, &target)) > >> + return -1; > >> + if (!evsel__is_bpf(counter)) > >> + all_counters_use_bpf = false; > > > > could be done in bpf_counter__load, check below: > > > >> } > >> > >> evlist__for_each_cpu (evsel_list, i, cpu) { > >> diff --git a/tools/perf/util/bpf_counter.c b/tools/perf/util/bpf_counter.c > >> index 5de991ab46af9..33b1888103dfa 100644 > >> --- a/tools/perf/util/bpf_counter.c > >> +++ b/tools/perf/util/bpf_counter.c > >> @@ -790,7 +790,8 @@ int bpf_counter__load(struct evsel *evsel, struct target *target) > >> { > >> if (target->bpf_str) > >> evsel->bpf_counter_ops = &bpf_program_profiler_ops; > >> - else if (target->use_bpf) > >> + else if (target->use_bpf || > >> + evsel__match_bpf_counter_events(evsel->name)) > >> evsel->bpf_counter_ops = &bperf_ops; > > > > with: > > else > > all_counters_use_bpf = false; > > > > I was also thinking of oving it to evlist, but it's sat specific, > > so I think it's good as static.. thanks for changing the implementation > > Hmm... then we need to somehow make all_counters_use_bpf visible in > bpf_counter.c, which won't be very clean. Also, since this is stat > specific, I guess it is better to keep it inside builtin-stat.c? > The runtime overhead should be minimal.
ah it's different file :) then it's better as it is, sorry
jirka
> > Thanks, > Song >
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