linux-kernel - [PATCH 1/4] trace_workqueue: use list_for_each_entry() instead of list_for_each_entry

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Message-ID: <49EC1D12.7060207@cn.fujitsu.com>
Date:	Mon, 20 Apr 2009 14:58:26 +0800
From:	Zhaolei <zhaolei@...fujitsu.com>
To:	unlisted-recipients:; (no To-header on input)
CC:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tom Zanussi <tzanussi@...il.com>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org, Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 1/4] trace_workqueue: use list_for_each_entry() instead of
 list_for_each_entry_safe()

No need to use list_for_each_entry_safe() in iteration without delete node,
we use list_for_each_entry() instead.

Signed-off-by: Zhao Lei <zhaolei@...fujitsu.com>
---
 kernel/trace/trace_workqueue.c |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c
index 984b917..934b27c 100644
--- a/kernel/trace/trace_workqueue.c
+++ b/kernel/trace/trace_workqueue.c
@@ -47,12 +47,11 @@ probe_workqueue_insertion(struct task_struct *wq_thread,
 			  struct work_struct *work)
 {
 	int cpu = cpumask_first(&wq_thread->cpus_allowed);
-	struct cpu_workqueue_stats *node, *next;
+	struct cpu_workqueue_stats *node;
 	unsigned long flags;
 
 	spin_lock_irqsave(&workqueue_cpu_stat(cpu)->lock, flags);
-	list_for_each_entry_safe(node, next, &workqueue_cpu_stat(cpu)->list,
-							list) {
+	list_for_each_entry(node, &workqueue_cpu_stat(cpu)->list, list) {
 		if (node->pid == wq_thread->pid) {
 			atomic_inc(&node->inserted);
 			goto found;
@@ -69,12 +68,11 @@ probe_workqueue_execution(struct task_struct *wq_thread,
 			  struct work_struct *work)
 {
 	int cpu = cpumask_first(&wq_thread->cpus_allowed);
-	struct cpu_workqueue_stats *node, *next;
+	struct cpu_workqueue_stats *node;
 	unsigned long flags;
 
 	spin_lock_irqsave(&workqueue_cpu_stat(cpu)->lock, flags);
-	list_for_each_entry_safe(node, next, &workqueue_cpu_stat(cpu)->list,
-							list) {
+	list_for_each_entry(node, &workqueue_cpu_stat(cpu)->list, list) {
 		if (node->pid == wq_thread->pid) {
 			node->executed++;
 			goto found;
-- 
1.5.5.3



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