diff options
| author | David Matlack <dmatlack@google.com> | 2016-12-16 14:30:35 -0800 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2017-03-06 17:29:23 -0500 |
| commit | 577c9c60fccc57fce8502f9375c2f623d292c6ad (patch) | |
| tree | d51c24e8197460fd71bdda3d96d44effca2fd3a1 /kernel/jump_label.c | |
| parent | d51217abc7eaa11b9770d84b852b01085144a3f8 (diff) | |
jump_labels: API for flushing deferred jump label updates
[ Upstream commit b6416e61012429e0277bd15a229222fd17afc1c1 ]
Modules that use static_key_deferred need a way to synchronize with
any delayed work that is still pending when the module is unloaded.
Introduce static_key_deferred_flush() which flushes any pending
jump label updates.
Signed-off-by: David Matlack <dmatlack@google.com>
Cc: stable@vger.kernel.org
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'kernel/jump_label.c')
| -rw-r--r-- | kernel/jump_label.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/jump_label.c b/kernel/jump_label.c index 9019f15deab2..7d4d0a917d13 100644 --- a/kernel/jump_label.c +++ b/kernel/jump_label.c @@ -116,6 +116,13 @@ void static_key_slow_dec_deferred(struct static_key_deferred *key) } EXPORT_SYMBOL_GPL(static_key_slow_dec_deferred); +void static_key_deferred_flush(struct static_key_deferred *key) +{ + STATIC_KEY_CHECK_USE(); + flush_delayed_work(&key->work); +} +EXPORT_SYMBOL_GPL(static_key_deferred_flush); + void jump_label_rate_limit(struct static_key_deferred *key, unsigned long rl) { |