[PATCH 13/19] tracing/workqueue: use list_for_each_entry instead of list_for_each_entry_safe in probe_workqueue_destruction()

[Frederic Weisbecker <fweisbec@gmail.com>]

From: Zhaolei <zhaolei@cn.fujitsu.com>

No need to use list_for_each_entry_safe() because we just remove one list node
which is first found in list iteration.
(we don't continue list iteration after remove list node)

[ Impact: cleanup ]

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
---
 kernel/trace/trace_workqueue.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c
index 51ed57e..b995bc0 100644
--- a/kernel/trace/trace_workqueue.c
+++ b/kernel/trace/trace_workqueue.c
@@ -206,12 +206,11 @@ static void probe_workqueue_destruction(struct task_struct *wq_thread)
 {
 	/* Workqueue only execute on one cpu */
 	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) {
 		struct workfunc_stats *wfstat, *wfstatnext;
 
 		if (node->task != wq_thread)
-- 
1.6.2.3