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| author | Peter Zijlstra <peterz@infradead.org> | 2017-03-16 13:47:50 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-16 14:16:53 +0100 |
| commit | 15121c789e001168decac6483d192bdb7ea29e74 (patch) | |
| tree | 80bc185614be7980c6f7ed9a0d1c1e0f13572ec6 /kernel/events | |
| parent | e7cc4865f0f31698ef2f7aac01a50e78968985b7 (diff) | |
| download | linux-15121c789e001168decac6483d192bdb7ea29e74.tar.gz linux-15121c789e001168decac6483d192bdb7ea29e74.tar.bz2 linux-15121c789e001168decac6483d192bdb7ea29e74.zip | |
perf/core: Simplify perf_event_free_task()
We have ctx->event_list that contains all events; no need to
repeatedly iterate the group lists to find them all.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Oleg Nesterov <oleg@redhat.com>
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>
Cc: fweisbec@gmail.com
Link: http://lkml.kernel.org/r/20170316125823.239678244@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index fc7c9a85944d..5f21e5e09ba4 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -10426,21 +10426,11 @@ void perf_event_free_task(struct task_struct *task) WRITE_ONCE(ctx->task, TASK_TOMBSTONE); put_task_struct(task); /* cannot be last */ raw_spin_unlock_irq(&ctx->lock); -again: - list_for_each_entry_safe(event, tmp, &ctx->pinned_groups, - group_entry) - perf_free_event(event, ctx); - list_for_each_entry_safe(event, tmp, &ctx->flexible_groups, - group_entry) + list_for_each_entry_safe(event, tmp, &ctx->event_list, event_entry) perf_free_event(event, ctx); - if (!list_empty(&ctx->pinned_groups) || - !list_empty(&ctx->flexible_groups)) - goto again; - mutex_unlock(&ctx->mutex); - put_ctx(ctx); } } |