linux-kernel - [PATCH 05/10] perf: update to use 'very

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Date:	Tue, 21 Feb 2012 15:03:08 -0500
From:	Jason Baron <jbaron@...hat.com>
To:	a.p.zijlstra@...llo.nl, mingo@...e.hu
Cc:	rostedt@...dmis.org, mathieu.desnoyers@...icios.com, hpa@...or.com,
	davem@...emloft.net, ddaney.cavm@...il.com,
	akpm@...ux-foundation.org, paulus@...ba.org,
	acme@...stprotocols.net, linux-kernel@...r.kernel.org
Subject: [PATCH 05/10] perf: update to use 'very_unlikely()'

Update perf functions with api change: static_branch() -> very_unlikely().

Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Signed-off-by: Jason Baron <jbaron@...hat.com>
---
 include/linux/perf_event.h |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 412b790..041d02b 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1066,7 +1066,7 @@ perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr)
 {
 	struct pt_regs hot_regs;
 
-	if (static_branch(&perf_swevent_enabled[event_id])) {
+	if (very_unlikely(&perf_swevent_enabled[event_id])) {
 		if (!regs) {
 			perf_fetch_caller_regs(&hot_regs);
 			regs = &hot_regs;
@@ -1080,7 +1080,7 @@ extern struct jump_label_key_deferred perf_sched_events;
 static inline void perf_event_task_sched_in(struct task_struct *prev,
 					    struct task_struct *task)
 {
-	if (static_branch(&perf_sched_events.key))
+	if (very_unlikely(&perf_sched_events.key))
 		__perf_event_task_sched_in(prev, task);
 }
 
@@ -1089,7 +1089,7 @@ static inline void perf_event_task_sched_out(struct task_struct *prev,
 {
 	perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, NULL, 0);
 
-	if (static_branch(&perf_sched_events.key))
+	if (very_unlikely(&perf_sched_events.key))
 		__perf_event_task_sched_out(prev, next);
 }
 
-- 
1.7.7.5

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