diff options
Diffstat (limited to 'include/linux/kthread.h')
| -rw-r--r-- | include/linux/kthread.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/linux/kthread.h b/include/linux/kthread.h index afc8939da861..4acde1ae2228 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -63,10 +63,12 @@ extern int tsk_fork_get_node(struct task_struct *tsk); */ struct kthread_work; typedef void (*kthread_work_func_t)(struct kthread_work *work); +void kthread_delayed_work_timer_fn(unsigned long __data); struct kthread_worker { spinlock_t lock; struct list_head work_list; + struct list_head delayed_work_list; struct task_struct *task; struct kthread_work *current_work; }; @@ -77,9 +79,15 @@ struct kthread_work { struct kthread_worker *worker; }; +struct kthread_delayed_work { + struct kthread_work work; + struct timer_list timer; +}; + #define KTHREAD_WORKER_INIT(worker) { \ .lock = __SPIN_LOCK_UNLOCKED((worker).lock), \ .work_list = LIST_HEAD_INIT((worker).work_list), \ + .delayed_work_list = LIST_HEAD_INIT((worker).delayed_work_list),\ } #define KTHREAD_WORK_INIT(work, fn) { \ @@ -87,12 +95,23 @@ struct kthread_work { .func = (fn), \ } +#define KTHREAD_DELAYED_WORK_INIT(dwork, fn) { \ + .work = KTHREAD_WORK_INIT((dwork).work, (fn)), \ + .timer = __TIMER_INITIALIZER(kthread_delayed_work_timer_fn, \ + 0, (unsigned long)&(dwork), \ + TIMER_IRQSAFE), \ + } + #define DEFINE_KTHREAD_WORKER(worker) \ struct kthread_worker worker = KTHREAD_WORKER_INIT(worker) #define DEFINE_KTHREAD_WORK(work, fn) \ struct kthread_work work = KTHREAD_WORK_INIT(work, fn) +#define DEFINE_KTHREAD_DELAYED_WORK(dwork, fn) \ + struct kthread_delayed_work dwork = \ + KTHREAD_DELAYED_WORK_INIT(dwork, fn) + /* * kthread_worker.lock needs its own lockdep class key when defined on * stack with lockdep enabled. Use the following macros in such cases. @@ -122,6 +141,15 @@ extern void __kthread_init_worker(struct kthread_worker *worker, (work)->func = (fn); \ } while (0) +#define kthread_init_delayed_work(dwork, fn) \ + do { \ + kthread_init_work(&(dwork)->work, (fn)); \ + __setup_timer(&(dwork)->timer, \ + kthread_delayed_work_timer_fn, \ + (unsigned long)(dwork), \ + TIMER_IRQSAFE); \ + } while (0) + int kthread_worker_fn(void *worker_ptr); __printf(1, 2) @@ -133,6 +161,11 @@ kthread_create_worker_on_cpu(int cpu, const char namefmt[], ...); bool kthread_queue_work(struct kthread_worker *worker, struct kthread_work *work); + +bool kthread_queue_delayed_work(struct kthread_worker *worker, + struct kthread_delayed_work *dwork, + unsigned long delay); + void kthread_flush_work(struct kthread_work *work); void kthread_flush_worker(struct kthread_worker *worker); |