Messages in this thread Patch in this message | | | Date | Tue, 08 Jul 2008 15:55:48 -0700 | From | Mike Travis <> | Subject | [PATCH 1/1] kthread: Reduce stack pressure in create_kthread and kthreadd |
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Subject: [PATCH 1/1] 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.
Based on linux-2.6.tip/master
Signed-off-by: Mike Travis <travis@sgi.com> --- kernel/kthread.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- linux-2.6.tip.orig/kernel/kthread.c +++ linux-2.6.tip/kernel/kthread.c @@ -107,7 +107,7 @@ static void create_kthread(struct kthrea */ 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); } @@ -238,7 +238,7 @@ 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;
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