linux-kernel - [PATCH 2/9] events: use DEFINE_STATIC_SRCU() to define pmus

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Message-Id: <1363366257-4886-3-git-send-email-laijs@cn.fujitsu.com>
Date:	Sat, 16 Mar 2013 00:50:50 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Cc:	Lai Jiangshan <laijs@...fujitsu.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Subject: [PATCH 2/9] events: use DEFINE_STATIC_SRCU() to define pmus_srcu

DEFINE_STATIC_SRCU() defines srcu struct and do init at build time.

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
 kernel/events/core.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index b0cd865..c334f26 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -146,7 +146,7 @@ static atomic_t nr_task_events __read_mostly;
 
 static LIST_HEAD(pmus);
 static DEFINE_MUTEX(pmus_lock);
-static struct srcu_struct pmus_srcu;
+DEFINE_STATIC_SRCU(pmus_srcu);
 
 /*
  * perf event paranoia level:
@@ -7396,7 +7396,6 @@ void __init perf_event_init(void)
 	idr_init(&pmu_idr);
 
 	perf_event_init_all_cpus();
-	init_srcu_struct(&pmus_srcu);
 	perf_pmu_register(&perf_swevent, "software", PERF_TYPE_SOFTWARE);
 	perf_pmu_register(&perf_cpu_clock, NULL, -1);
 	perf_pmu_register(&perf_task_clock, NULL, -1);
-- 
1.7.4.4

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