[Intel-wired-lan] [PATCH RFC net-next 16/34] jump_label: export static_key_slow_{inc, dec}_cpuslocked()

Alexander Lobakin aleksander.lobakin at intel.com
Sat Dec 23 02:55:36 UTC 2023


Sometimes, there's a need to modify a lot of static keys or modify the
same key multiple times in a loop. In that case, it seems more optimal
to lock cpu_read_lock once and then call _cpuslocked() variants.
The enable/disable functions are already exported, the refcounted
counterparts however are not. Fix that to allow modules to save some
cycles.

Signed-off-by: Alexander Lobakin <aleksander.lobakin at intel.com>
---
 kernel/jump_label.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index d9c822bbffb8..f0375372b484 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -177,6 +177,7 @@ bool static_key_slow_inc_cpuslocked(struct static_key *key)
 	jump_label_unlock();
 	return true;
 }
+EXPORT_SYMBOL_GPL(static_key_slow_inc_cpuslocked);
 
 bool static_key_slow_inc(struct static_key *key)
 {
@@ -304,6 +305,7 @@ void static_key_slow_dec_cpuslocked(struct static_key *key)
 	STATIC_KEY_CHECK_USE(key);
 	__static_key_slow_dec_cpuslocked(key);
 }
+EXPORT_SYMBOL_GPL(static_key_slow_dec_cpuslocked);
 
 void __static_key_slow_dec_deferred(struct static_key *key,
 				    struct delayed_work *work,
-- 
2.43.0



More information about the Intel-wired-lan mailing list