From 8df185a95c9b84fc0c3c02224e64fdc5b83bae34 Mon Sep 17 00:00:00 2001 From: Mike Travis Date: Tue, 8 Jul 2008 15:55:48 -0700 Subject: [PATCH] kthread: reduce stack pressure in create_kthread and kthreadd * Replace: set_cpus_allowed(..., CPU_MASK_ALL) with: set_cpus_allowed_ptr(..., CPU_MASK_ALL_PTR) to remove excessive stack requirements when NR_CPUS=4096. Signed-off-by: Mike Travis Cc: Andrew Morton Signed-off-by: Ingo Molnar --- kernel/kthread.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/kthread.c b/kernel/kthread.c index ac3fb732664..6111c27491b 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -106,7 +106,7 @@ static void create_kthread(struct kthread_create_info *create) */ sched_setscheduler(create->result, SCHED_NORMAL, ¶m); set_user_nice(create->result, KTHREAD_NICE_LEVEL); - set_cpus_allowed(create->result, CPU_MASK_ALL); + set_cpus_allowed_ptr(create->result, CPU_MASK_ALL_PTR); } complete(&create->done); } @@ -233,7 +233,7 @@ int kthreadd(void *unused) set_task_comm(tsk, "kthreadd"); ignore_signals(tsk); set_user_nice(tsk, KTHREAD_NICE_LEVEL); - set_cpus_allowed(tsk, CPU_MASK_ALL); + set_cpus_allowed_ptr(tsk, CPU_MASK_ALL_PTR); current->flags |= PF_NOFREEZE | PF_FREEZER_NOSIG;