mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
perf: Optimize perf_sched_events() usage
It doesn't make sense to take up-to _4_ references on perf_sched_events() per event, avoid doing this. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
parent
aee7dbc45f
commit
25432ae96a
@ -3491,11 +3491,13 @@ static void unaccount_event_cpu(struct perf_event *event, int cpu)
|
||||
|
||||
static void unaccount_event(struct perf_event *event)
|
||||
{
|
||||
bool dec = false;
|
||||
|
||||
if (event->parent)
|
||||
return;
|
||||
|
||||
if (event->attach_state & PERF_ATTACH_TASK)
|
||||
static_key_slow_dec_deferred(&perf_sched_events);
|
||||
dec = true;
|
||||
if (event->attr.mmap || event->attr.mmap_data)
|
||||
atomic_dec(&nr_mmap_events);
|
||||
if (event->attr.comm)
|
||||
@ -3505,12 +3507,15 @@ static void unaccount_event(struct perf_event *event)
|
||||
if (event->attr.freq)
|
||||
atomic_dec(&nr_freq_events);
|
||||
if (event->attr.context_switch) {
|
||||
static_key_slow_dec_deferred(&perf_sched_events);
|
||||
dec = true;
|
||||
atomic_dec(&nr_switch_events);
|
||||
}
|
||||
if (is_cgroup_event(event))
|
||||
static_key_slow_dec_deferred(&perf_sched_events);
|
||||
dec = true;
|
||||
if (has_branch_stack(event))
|
||||
dec = true;
|
||||
|
||||
if (dec)
|
||||
static_key_slow_dec_deferred(&perf_sched_events);
|
||||
|
||||
unaccount_event_cpu(event, event->cpu);
|
||||
@ -7723,11 +7728,13 @@ static void account_event_cpu(struct perf_event *event, int cpu)
|
||||
|
||||
static void account_event(struct perf_event *event)
|
||||
{
|
||||
bool inc = false;
|
||||
|
||||
if (event->parent)
|
||||
return;
|
||||
|
||||
if (event->attach_state & PERF_ATTACH_TASK)
|
||||
static_key_slow_inc(&perf_sched_events.key);
|
||||
inc = true;
|
||||
if (event->attr.mmap || event->attr.mmap_data)
|
||||
atomic_inc(&nr_mmap_events);
|
||||
if (event->attr.comm)
|
||||
@ -7740,11 +7747,14 @@ static void account_event(struct perf_event *event)
|
||||
}
|
||||
if (event->attr.context_switch) {
|
||||
atomic_inc(&nr_switch_events);
|
||||
static_key_slow_inc(&perf_sched_events.key);
|
||||
inc = true;
|
||||
}
|
||||
if (has_branch_stack(event))
|
||||
static_key_slow_inc(&perf_sched_events.key);
|
||||
inc = true;
|
||||
if (is_cgroup_event(event))
|
||||
inc = true;
|
||||
|
||||
if (inc)
|
||||
static_key_slow_inc(&perf_sched_events.key);
|
||||
|
||||
account_event_cpu(event, event->cpu);
|
||||
|
Loading…
Reference in New Issue
Block a user