linux-kernel - [tip:perf/core] jump label: Initialize workqueue tracepoints *before* they are registered

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Message-ID: <tip-e0cf0cd49632552f063fb3ae58691946da45fb2e@git.kernel.org>
Date:	Fri, 24 Sep 2010 08:59:40 GMT
From:	tip-bot for Jason Baron <jbaron@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	rostedt@...dmis.org, jbaron@...hat.com, tglx@...utronix.de
Subject: [tip:perf/core] jump label: Initialize workqueue tracepoints *before* they are registered

Commit-ID:  e0cf0cd49632552f063fb3ae58691946da45fb2e
Gitweb:     http://git.kernel.org/tip/e0cf0cd49632552f063fb3ae58691946da45fb2e
Author:     Jason Baron <jbaron@...hat.com>
AuthorDate: Fri, 17 Sep 2010 11:09:04 -0400
Committer:  Steven Rostedt <rostedt@...dmis.org>
CommitDate: Wed, 22 Sep 2010 16:30:03 -0400

jump label: Initialize workqueue tracepoints *before* they are registered

Initialize the workqueue data structures *before* they are registered
so that they are ready for callbacks.

Signed-off-by: Jason Baron <jbaron@...hat.com>
LKML-Reference: <e3a3383fc370ac7086625bebe89d9480d7caf372.1284733808.git.jbaron@...hat.com>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
 kernel/trace/trace_workqueue.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c
index a7cc379..209b379 100644
--- a/kernel/trace/trace_workqueue.c
+++ b/kernel/trace/trace_workqueue.c
@@ -263,6 +263,11 @@ int __init trace_workqueue_early_init(void)
 {
 	int ret, cpu;
 
+	for_each_possible_cpu(cpu) {
+		spin_lock_init(&workqueue_cpu_stat(cpu)->lock);
+		INIT_LIST_HEAD(&workqueue_cpu_stat(cpu)->list);
+	}
+
 	ret = register_trace_workqueue_insertion(probe_workqueue_insertion, NULL);
 	if (ret)
 		goto out;
@@ -279,11 +284,6 @@ int __init trace_workqueue_early_init(void)
 	if (ret)
 		goto no_creation;
 
-	for_each_possible_cpu(cpu) {
-		spin_lock_init(&workqueue_cpu_stat(cpu)->lock);
-		INIT_LIST_HEAD(&workqueue_cpu_stat(cpu)->list);
-	}
-
 	return 0;
 
 no_creation:
--
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