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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-23 20:06:38 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-23 20:06:38 +0300 |
| commit | 4a22709e21c2b1bedf90f68c823daf65d8e6b491 (patch) | |
| tree | b480c70465c11cb6b4d9e4f47b8e1824df2d5eea /include | |
| parent | 0a14d7649872be966d12bc6c3056bb37c27b94bd (diff) | |
| parent | 91989c707884ecc7cd537281ab1a4b8fb7219da3 (diff) | |
| download | linux-4a22709e21c2b1bedf90f68c823daf65d8e6b491.tar.xz | |
Merge tag 'arch-cleanup-2020-10-22' of git://git.kernel.dk/linux-block
Pull arch task_work cleanups from Jens Axboe:
"Two cleanups that don't fit other categories:
- Finally get the task_work_add() cleanup done properly, so we don't
have random 0/1/false/true/TWA_SIGNAL confusing use cases. Updates
all callers, and also fixes up the documentation for
task_work_add().
- While working on some TIF related changes for 5.11, this
TIF_NOTIFY_RESUME cleanup fell out of that. Remove some arch
duplication for how that is handled"
* tag 'arch-cleanup-2020-10-22' of git://git.kernel.dk/linux-block:
task_work: cleanup notification modes
tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume()
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/task_work.h | 11 | ||||
| -rw-r--r-- | include/linux/tracehook.h | 4 |
2 files changed, 10 insertions, 5 deletions
diff --git a/include/linux/task_work.h b/include/linux/task_work.h index 0fb93aafa478..0d848a1e9e62 100644 --- a/include/linux/task_work.h +++ b/include/linux/task_work.h @@ -13,9 +13,14 @@ init_task_work(struct callback_head *twork, task_work_func_t func) twork->func = func; } -#define TWA_RESUME 1 -#define TWA_SIGNAL 2 -int task_work_add(struct task_struct *task, struct callback_head *twork, int); +enum task_work_notify_mode { + TWA_NONE, + TWA_RESUME, + TWA_SIGNAL, +}; + +int task_work_add(struct task_struct *task, struct callback_head *twork, + enum task_work_notify_mode mode); struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t); void task_work_run(void); diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index 36fb3bbed6b2..b480e1a07ed8 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -178,9 +178,9 @@ static inline void set_notify_resume(struct task_struct *task) */ static inline void tracehook_notify_resume(struct pt_regs *regs) { + clear_thread_flag(TIF_NOTIFY_RESUME); /* - * The caller just cleared TIF_NOTIFY_RESUME. This barrier - * pairs with task_work_add()->set_notify_resume() after + * This barrier pairs with task_work_add()->set_notify_resume() after * hlist_add_head(task->task_works); */ smp_mb__after_atomic(); |