Commit-ID: ba8a75c16e292c0a3a87406a77508cbbc6cf4ee2 Gitweb: http://git.kernel.org/tip/ba8a75c16e292c0a3a87406a77508cbbc6cf4ee2 Author: Frederic Weisbecker <fweisbec@xxxxxxxxx> AuthorDate: Tue, 23 Jul 2013 02:31:04 +0200 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Tue, 30 Jul 2013 22:29:14 +0200 perf: Account freq events per cpu This is going to be used by the full dynticks subsystem as a finer-grained information to know when to keep and when to stop the tick. Original-patch-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/1374539466-4799-7-git-send-email-fweisbec@xxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- kernel/events/core.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index 63bdec9..3fe385a 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -141,6 +141,7 @@ enum event_type_t { struct static_key_deferred perf_sched_events __read_mostly; static DEFINE_PER_CPU(atomic_t, perf_cgroup_events); static DEFINE_PER_CPU(atomic_t, perf_branch_stack_events); +static DEFINE_PER_CPU(atomic_t, perf_freq_events); static atomic_t nr_mmap_events __read_mostly; static atomic_t nr_comm_events __read_mostly; @@ -3139,6 +3140,9 @@ static void unaccount_event_cpu(struct perf_event *event, int cpu) } if (is_cgroup_event(event)) atomic_dec(&per_cpu(perf_cgroup_events, cpu)); + + if (event->attr.freq) + atomic_dec(&per_cpu(perf_freq_events, cpu)); } static void unaccount_event(struct perf_event *event) @@ -6474,6 +6478,9 @@ static void account_event_cpu(struct perf_event *event, int cpu) } if (is_cgroup_event(event)) atomic_inc(&per_cpu(perf_cgroup_events, cpu)); + + if (event->attr.freq) + atomic_inc(&per_cpu(perf_freq_events, cpu)); } static void account_event(struct perf_event *event) -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html