diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-05-31 16:59:16 +0200 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-13 11:01:33 -0500 |
| commit | ce6a4a6e23abbcd15f3efe5c7f6d4acf32ade893 (patch) | |
| tree | f0698f696423620926abc26d05e7a9301f888472 /include | |
| parent | 06d6ab1eac68252a7765a999cd67c132e8c3f84f (diff) | |
sched-delay-put-task.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index b9975067d0e0..0fbffda6c5d4 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1635,6 +1635,9 @@ struct task_struct { #ifdef CONFIG_HAVE_HW_BREAKPOINT atomic_t ptrace_bp_refcnt; #endif +#ifdef CONFIG_PREEMPT_RT_BASE + struct rcu_head put_rcu; +#endif }; /* Future-safe accessor for struct task_struct's cpus_allowed. */ @@ -1819,6 +1822,15 @@ extern struct pid *cad_pid; extern void free_task(struct task_struct *tsk); #define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0) +#ifdef CONFIG_PREEMPT_RT_BASE +extern void __put_task_struct_cb(struct rcu_head *rhp); + +static inline void put_task_struct(struct task_struct *t) +{ + if (atomic_dec_and_test(&t->usage)) + call_rcu(&t->put_rcu, __put_task_struct_cb); +} +#else extern void __put_task_struct(struct task_struct *t); static inline void put_task_struct(struct task_struct *t) @@ -1826,6 +1838,7 @@ static inline void put_task_struct(struct task_struct *t) if (atomic_dec_and_test(&t->usage)) __put_task_struct(t); } +#endif extern void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st); extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st); |