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| author |   Muchun Song <songmuchun@bytedance.com> | 2025-02-08 17:04:15 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2025-02-11 13:04:11 -0700 |
| commit | 36d03cb3277e29beedb87b8efb1e4da02b26e0c0 (patch) | |
| tree | a86f48d871fe9dfa3858bc8c97a52e9a3017cde5 /include/linux/wait.h | |
| parent | loop: release the lo_work_lock before queue_work (diff) | |
| download | linux-rng-36d03cb3277e29beedb87b8efb1e4da02b26e0c0.tar.xz linux-rng-36d03cb3277e29beedb87b8efb1e4da02b26e0c0.zip | |
block: introduce init_wait_func()
There is already a macro DEFINE_WAIT_FUNC() to declare a wait_queue_entry
with a specified waking function. But there is not a counterpart for
initializing one wait_queue_entry with a specified waking function. So
introducing init_wait_func() for this, which also could be used in iocost
and rq-qos. Using default_wake_function() in rq_qos_wait() to wake up
waiters, which could remove ->task field from rq_qos_wait_data.
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20250208090416.38642-1-songmuchun@bytedance.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/wait.h')
| -rw-r--r-- | include/linux/wait.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/wait.h b/include/linux/wait.h index 6d90ad974408..2bdc8f47963b 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -1207,14 +1207,16 @@ int autoremove_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, i #define DEFINE_WAIT(name) DEFINE_WAIT_FUNC(name, autoremove_wake_function) -#define init_wait(wait) \ +#define init_wait_func(wait, function) \ do { \ (wait)->private = current; \ - (wait)->func = autoremove_wake_function; \ + (wait)->func = function; \ INIT_LIST_HEAD(&(wait)->entry); \ (wait)->flags = 0; \ } while (0) +#define init_wait(wait) init_wait_func(wait, autoremove_wake_function) + typedef int (*task_call_f)(struct task_struct *p, void *arg); extern int task_call_func(struct task_struct *p, task_call_f func, void *arg); |