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@gmail.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1312394344-18815-1-git-send-email-dzickus@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 36491cd..e952a13 100644 (file)
--- 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) {