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| author | Mike Galbraith <efault@gmx.de> | 2009-09-09 15:41:37 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-09 17:30:06 +0200 |
| commit | 61cbe54d9479ad98283b2dda686deae4c34b2d59 (patch) | |
| tree | e7d4766daaf2895aab96b035a973b67439baecf2 | |
| parent | 172e082a9111ea504ee34cbba26284a5ebdc53a7 (diff) | |
| download | kernel-common-61cbe54d9479ad98283b2dda686deae4c34b2d59.tar.gz kernel-common-61cbe54d9479ad98283b2dda686deae4c34b2d59.tar.bz2 kernel-common-61cbe54d9479ad98283b2dda686deae4c34b2d59.zip | |
sched: Keep kthreads at default priority
Removes kthread/workqueue priority boost, they increase worst-case
desktop latencies.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1252486344.28645.18.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/kthread.c | 4 | ||||
| -rw-r--r-- | kernel/workqueue.c | 2 |
2 files changed, 0 insertions, 6 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c index eb8751aa0418..5fe709982caa 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -16,8 +16,6 @@ #include <linux/mutex.h> #include <trace/events/sched.h> -#define KTHREAD_NICE_LEVEL (-5) - static DEFINE_SPINLOCK(kthread_create_lock); static LIST_HEAD(kthread_create_list); struct task_struct *kthreadd_task; @@ -145,7 +143,6 @@ struct task_struct *kthread_create(int (*threadfn)(void *data), * The kernel thread should not inherit these properties. */ sched_setscheduler_nocheck(create.result, SCHED_NORMAL, ¶m); - set_user_nice(create.result, KTHREAD_NICE_LEVEL); set_cpus_allowed_ptr(create.result, cpu_all_mask); } return create.result; @@ -221,7 +218,6 @@ int kthreadd(void *unused) /* Setup a clean context for our children to inherit. */ set_task_comm(tsk, "kthreadd"); ignore_signals(tsk); - set_user_nice(tsk, KTHREAD_NICE_LEVEL); set_cpus_allowed_ptr(tsk, cpu_all_mask); set_mems_allowed(node_possible_map); diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 0668795d8818..ea1b4e7674d5 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -317,8 +317,6 @@ static int worker_thread(void *__cwq) if (cwq->wq->freezeable) set_freezable(); - set_user_nice(current, -5); - for (;;) { prepare_to_wait(&cwq->more_work, &wait, TASK_INTERRUPTIBLE); if (!freezing(current) && |