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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-12-16 15:53:53 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-12-16 15:53:53 +0300 |
| commit | 1a931707ad4a46e79d4ecfee56d8f6e8cc8d4f28 (patch) | |
| tree | c3ed4dafca580360da63eef576b35eb67eb2e5a2 /kernel/sched/wait.c | |
| parent | 818448e9cf92e5c6b3c10320372eefcbe4174e4f (diff) | |
| parent | 84e57d292203a45c96dbcb2e6be9dd80961d981a (diff) | |
| download | linux-1a931707ad4a46e79d4ecfee56d8f6e8cc8d4f28.tar.xz | |
Merge remote-tracking branch 'torvalds/master' into perf/core
To resolve a trivial merge conflict with c302378bc157f6a7 ("libbpf:
Hashmap interface update to allow both long and void* keys/values"),
where a function present upstream was removed in the perf tools
development tree.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'kernel/sched/wait.c')
| -rw-r--r-- | kernel/sched/wait.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c index 9860bb9a847c..133b74730738 100644 --- a/kernel/sched/wait.c +++ b/kernel/sched/wait.c @@ -121,11 +121,12 @@ static int __wake_up_common(struct wait_queue_head *wq_head, unsigned int mode, return nr_exclusive; } -static void __wake_up_common_lock(struct wait_queue_head *wq_head, unsigned int mode, +static int __wake_up_common_lock(struct wait_queue_head *wq_head, unsigned int mode, int nr_exclusive, int wake_flags, void *key) { unsigned long flags; wait_queue_entry_t bookmark; + int remaining = nr_exclusive; bookmark.flags = 0; bookmark.private = NULL; @@ -134,10 +135,12 @@ static void __wake_up_common_lock(struct wait_queue_head *wq_head, unsigned int do { spin_lock_irqsave(&wq_head->lock, flags); - nr_exclusive = __wake_up_common(wq_head, mode, nr_exclusive, + remaining = __wake_up_common(wq_head, mode, remaining, wake_flags, key, &bookmark); spin_unlock_irqrestore(&wq_head->lock, flags); } while (bookmark.flags & WQ_FLAG_BOOKMARK); + + return nr_exclusive - remaining; } /** @@ -147,13 +150,14 @@ static void __wake_up_common_lock(struct wait_queue_head *wq_head, unsigned int * @nr_exclusive: how many wake-one or wake-many threads to wake up * @key: is directly passed to the wakeup function * - * If this function wakes up a task, it executes a full memory barrier before - * accessing the task state. + * If this function wakes up a task, it executes a full memory barrier + * before accessing the task state. Returns the number of exclusive + * tasks that were awaken. */ -void __wake_up(struct wait_queue_head *wq_head, unsigned int mode, - int nr_exclusive, void *key) +int __wake_up(struct wait_queue_head *wq_head, unsigned int mode, + int nr_exclusive, void *key) { - __wake_up_common_lock(wq_head, mode, nr_exclusive, 0, key); + return __wake_up_common_lock(wq_head, mode, nr_exclusive, 0, key); } EXPORT_SYMBOL(__wake_up); |