diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2009-07-25 18:56:56 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2011-09-13 11:11:55 +0200 |
| commit | ee30a7b2fc072f139dac44826860d2c1f422137c (patch) | |
| tree | 4f11173879b25cc31822cb0a8d9dbd48395e74bc /include/linux/sched.h | |
| parent | locking, printk: Annotate logbuf_lock as raw (diff) | |
| download | linux-dev-ee30a7b2fc072f139dac44826860d2c1f422137c.tar.xz linux-dev-ee30a7b2fc072f139dac44826860d2c1f422137c.zip | |
locking, sched: Annotate thread_group_cputimer as raw
The thread_group_cputimer lock can be taken in atomic context and therefore
cannot be preempted on -rt - annotate it.
In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 4ac2c0578e0f..e672236c08e0 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -510,7 +510,7 @@ struct task_cputime { struct thread_group_cputimer { struct task_cputime cputime; int running; - spinlock_t lock; + raw_spinlock_t lock; }; #include <linux/rwsem.h> @@ -2566,7 +2566,7 @@ void thread_group_cputimer(struct task_struct *tsk, struct task_cputime *times); static inline void thread_group_cputime_init(struct signal_struct *sig) { - spin_lock_init(&sig->cputimer.lock); + raw_spin_lock_init(&sig->cputimer.lock); } /* |