Do not update thread stats or show idle summary unless CPU is in the list of interest.
Fixes: c30d630d1bcf ("perf sched timehist: Add support for filtering on CPU") Signed-off-by: David Ahern <dsah...@kernel.org> --- v2 - check that cpu_list is set before checking cpu_bitmap in timehist_print_summary tools/perf/builtin-sched.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 0c7d599fa555..e6fc297cee91 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -2584,7 +2584,8 @@ static int timehist_sched_change_event(struct perf_tool *tool, } if (!sched->idle_hist || thread->tid == 0) { - timehist_update_runtime_stats(tr, t, tprev); + if (!cpu_list || test_bit(sample->cpu, cpu_bitmap)) + timehist_update_runtime_stats(tr, t, tprev); if (sched->idle_hist) { struct idle_thread_runtime *itr = (void *)tr; @@ -2857,6 +2858,9 @@ static void timehist_print_summary(struct perf_sched *sched, printf("\nIdle stats:\n"); for (i = 0; i < idle_max_cpu; ++i) { + if (cpu_list && !test_bit(i, cpu_bitmap)) + continue; + t = idle_threads[i]; if (!t) continue; -- 2.17.1