| From 8cd5722c77216adab9ae2606e520b37fa6f0cd5d Mon Sep 17 00:00:00 2001 |
| From: Thomas Gleixner <tglx@linutronix.de> |
| Date: Tue, 21 Jul 2009 23:06:05 +0200 |
| Subject: [PATCH] core: Do not disable interrupts on RT in kernel/users.c |
| |
| commit 3d6ac61dfab979f3d8bec531772773b9dfaf0800 in tip. |
| |
| Use the local_irq_*_nort variants to reduce latencies in RT. The code |
| is serialized by the locks. No need to disable interrupts. |
| |
| Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
| |
| diff --git a/kernel/user.c b/kernel/user.c |
| index 46d0165..0c81912 100644 |
| --- a/kernel/user.c |
| +++ b/kernel/user.c |
| @@ -416,11 +416,11 @@ void free_uid(struct user_struct *up) |
| if (!up) |
| return; |
| |
| - local_irq_save(flags); |
| + local_irq_save_nort(flags); |
| if (atomic_dec_and_lock(&up->__count, &uidhash_lock)) |
| free_user(up, flags); |
| else |
| - local_irq_restore(flags); |
| + local_irq_restore_nort(flags); |
| } |
| |
| struct user_struct *alloc_uid(struct user_namespace *ns, uid_t uid) |
| -- |
| 1.7.1.1 |
| |
