linux-kernel - [PATCH] watchdog: NUMA affine kthreads

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Date:	Wed,  3 Aug 2011 13:59:04 -0400
From:	Don Zickus <dzickus@...hat.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Don Zickus <dzickus@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH] watchdog: NUMA affine kthreads

From: Eric Dumazet <eric.dumazet@...il.com>

watchdog kthreads can use kthread_create_on_node() to NUMA affine their
stack and task_struct.

Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
CC: Don Zickus <dzickus@...hat.com>
CC: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Signed-off-by: Don Zickus <dzickus@...hat.com>
---
 kernel/watchdog.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 36491cd..14cabcd 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -438,7 +438,8 @@ static int watchdog_enable(int cpu)
 
 	/* create the watchdog thread */
 	if (!p) {
-		p = kthread_create(watchdog, (void *)(unsigned long)cpu, "watchdog/%d", cpu);
+		p = kthread_create_on_node(watchdog, NULL, cpu_to_node(cpu),
+					   "watchdog/%d", cpu);
 		if (IS_ERR(p)) {
 			printk(KERN_ERR "softlockup watchdog for %i failed\n", cpu);
 			if (!err) {
-- 
1.7.6

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