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| author | Ingo Molnar <mingo@kernel.org> | 2017-02-06 12:57:33 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-03 03:45:22 +0300 |
| commit | 56cd697366b6d6f67acb6c58ac7f3b185d11ef07 (patch) | |
| tree | c0866c89f50b5c511d88ab356845b4eb534cda87 /include/linux/sched | |
| parent | cdc75e9f7b14f29efcf4b162a3c673733e96db79 (diff) | |
| download | linux-56cd697366b6d6f67acb6c58ac7f3b185d11ef07.tar.xz | |
sched/headers: Move the task_lock()/unlock() APIs to <linux/sched/task.h>
The task_lock()/task_unlock() APIs are not realated to core scheduling,
they are task lifetime APIs, i.e. they belong into <linux/sched/task.h>.
Move them.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched')
| -rw-r--r-- | include/linux/sched/task.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 1be049a18d1b..2be9fde588a7 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -91,4 +91,24 @@ static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t) } #endif +/* + * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring + * subscriptions and synchronises with wait4(). Also used in procfs. Also + * pins the final release of task.io_context. Also protects ->cpuset and + * ->cgroup.subsys[]. And ->vfork_done. + * + * Nests both inside and outside of read_lock(&tasklist_lock). + * It must not be nested with write_lock_irq(&tasklist_lock), + * neither inside nor outside. + */ +static inline void task_lock(struct task_struct *p) +{ + spin_lock(&p->alloc_lock); +} + +static inline void task_unlock(struct task_struct *p) +{ + spin_unlock(&p->alloc_lock); +} + #endif /* _LINUX_SCHED_TASK_H */ |