Commit-ID: 15121c789e001168decac6483d192bdb7ea29e74 Gitweb: http://git.kernel.org/tip/15121c789e001168decac6483d192bdb7ea29e74 Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx> AuthorDate: Thu, 16 Mar 2017 13:47:50 +0100 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Thu, 16 Mar 2017 14:16:53 +0100 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@xxxxxxxxxxxxx> Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> Cc: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Vince Weaver <vincent.weaver@xxxxxxxxx> Cc: fweisbec@xxxxxxxxx Link: http://lkml.kernel.org/r/20170316125823.239678244@xxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- kernel/events/core.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index fc7c9a8..5f21e5e 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); } } -- 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
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