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| author | David Matlack <dmatlack@google.com> | 2016-12-16 14:30:35 -0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-03-16 02:26:58 +0000 |
| commit | d08dd068ad2a957581711dc5f3f5b80e2b10f48d (patch) | |
| tree | 387968c82348f960e78565f571c11cd530346844 /kernel | |
| parent | f020578fbea567ad39e03eae2ccc3f7a0a477608 (diff) | |
| download | linux-stable-d08dd068ad2a957581711dc5f3f5b80e2b10f48d.tar.gz linux-stable-d08dd068ad2a957581711dc5f3f5b80e2b10f48d.tar.bz2 linux-stable-d08dd068ad2a957581711dc5f3f5b80e2b10f48d.zip | |
jump_labels: API for flushing deferred jump label updates
commit b6416e61012429e0277bd15a229222fd17afc1c1 upstream.
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>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'kernel')
| -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) { |