linux-kernel - [tip:perf/core] watchdog: Make the kthreads NUMA affine

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Message-ID: <tip-18e5a45db30e0e338cdd663eda05a8288cc14fa5@git.kernel.org>
Date:	Sun, 14 Aug 2011 15:55:24 GMT
From:	tip-bot for Eric Dumazet <eric.dumazet@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	eric.dumazet@...il.com, a.p.zijlstra@...llo.nl, tglx@...utronix.de,
	dzickus@...hat.com, mingo@...e.hu
Subject: [tip:perf/core] watchdog: Make the kthreads NUMA affine

Commit-ID:  18e5a45db30e0e338cdd663eda05a8288cc14fa5
Gitweb:     http://git.kernel.org/tip/18e5a45db30e0e338cdd663eda05a8288cc14fa5
Author:     Eric Dumazet <eric.dumazet@...il.com>
AuthorDate: Wed, 3 Aug 2011 13:59:04 -0400
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 14 Aug 2011 11:53:06 +0200

watchdog: Make the kthreads NUMA affine

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>
Signed-off-by: Don Zickus <dzickus@...hat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1312394344-18815-1-git-send-email-dzickus@redhat.com
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/watchdog.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 36491cd..e952a13 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -438,7 +438,7 @@ 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) {
--
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