linux-kernel - [PATCH 04/19] trace_workqueue: remove blank line between each cpu

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Date:	Thu, 30 Apr 2009 02:27:05 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Li Zefan <lizf@...fujitsu.com>,
	Zhaolei <zhaolei@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tom Zanussi <tzanussi@...il.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH 04/19] trace_workqueue: remove blank line between each cpu

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

The blankline between each cpu's workqueue stat is not necessary, because
the cpu number is enough to part them by eye.
Old style also caused a blankline below headline, and made code complex
by using lock, disableirq and get cpu var.

Old style:
 # CPU  INSERTED  EXECUTED   NAME
 # |      |         |          |

   0   8644       8644       events/0
   0      0          0       cpuset
   ...
   0      1          1       kdmflush

   1  35365      35365       events/1
   ...

New style:
 # CPU  INSERTED  EXECUTED   NAME
 # |      |         |          |

   0   8644       8644       events/0
   0      0          0       cpuset
   ...
   0      1          1       kdmflush
   1  35365      35365       events/1
   ...

[ Impact: provide more readable code ]

Signed-off-by: Zhao Lei <zhaolei@...fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Tom Zanussi <tzanussi@...il.com>
Cc: Oleg Nesterov <oleg@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
---
 kernel/trace/trace_workqueue.c |    7 -------
 1 files changed, 0 insertions(+), 7 deletions(-)

diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c
index 890974a..97fcea4 100644
--- a/kernel/trace/trace_workqueue.c
+++ b/kernel/trace/trace_workqueue.c
@@ -185,16 +185,9 @@ static void *workqueue_stat_next(void *prev, int idx)
 static int workqueue_stat_show(struct seq_file *s, void *p)
 {
 	struct cpu_workqueue_stats *cws = p;
-	unsigned long flags;
-	int cpu = cws->cpu;
 	struct pid *pid;
 	struct task_struct *tsk;
 
-	spin_lock_irqsave(&workqueue_cpu_stat(cpu)->lock, flags);
-	if (&cws->list == workqueue_cpu_stat(cpu)->list.next)
-		seq_printf(s, "\n");
-	spin_unlock_irqrestore(&workqueue_cpu_stat(cpu)->lock, flags);
-
 	pid = find_get_pid(cws->pid);
 	if (pid) {
 		tsk = get_pid_task(pid, PIDTYPE_PID);
-- 
1.6.2.3

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