diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-07-08 11:38:59 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-07-08 11:38:59 +0200 |
| commit | faa2fd7cbad4609d06d7904c0a80cf2f8cd23678 (patch) | |
| tree | 3a5bfcc8879b719aec97cb73ed6e020cde502546 /kernel/task_work.c | |
| parent | 01e377c539ca52a6c753d0fdbe93b3b8fcd66a1c (diff) | |
| parent | ce3614daabea8a2d01c1dd17ae41d1ec5e5ae7db (diff) | |
Merge branch 'sched/urgent'
Diffstat (limited to 'kernel/task_work.c')
| -rw-r--r-- | kernel/task_work.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/kernel/task_work.c b/kernel/task_work.c index 825f28259a19..5c0848ca1287 100644 --- a/kernel/task_work.c +++ b/kernel/task_work.c @@ -25,9 +25,10 @@ static struct callback_head work_exited; /* all we need is ->next == NULL */ * 0 if succeeds or -ESRCH. */ int -task_work_add(struct task_struct *task, struct callback_head *work, bool notify) +task_work_add(struct task_struct *task, struct callback_head *work, int notify) { struct callback_head *head; + unsigned long flags; do { head = READ_ONCE(task->task_works); @@ -36,8 +37,19 @@ task_work_add(struct task_struct *task, struct callback_head *work, bool notify) work->next = head; } while (cmpxchg(&task->task_works, head, work) != head); - if (notify) + switch (notify) { + case TWA_RESUME: set_notify_resume(task); + break; + case TWA_SIGNAL: + if (lock_task_sighand(task, &flags)) { + task->jobctl |= JOBCTL_TASK_WORK; + signal_wake_up(task, 0); + unlock_task_sighand(task, &flags); + } + break; + } + return 0; } |