From: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Date: Wed, 11 Dec 2024 09:40:00 -0800
> On Wed, Dec 11, 2024 at 06:26:48PM +0100, Alexander Lobakin wrote:
>> 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@xxxxxxxxx>
>> ---
>> kernel/jump_label.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/kernel/jump_label.c b/kernel/jump_label.c
>> index 93a822d3c468..1034c0348995 100644
>> --- a/kernel/jump_label.c
>> +++ b/kernel/jump_label.c
>> @@ -182,6 +182,7 @@ bool static_key_slow_inc_cpuslocked(struct static_key *key)
>> }
>> return true;
>> }
>> +EXPORT_SYMBOL_GPL(static_key_slow_inc_cpuslocked);
>>
>> bool static_key_slow_inc(struct static_key *key)
>> {
>> @@ -342,6 +343,7 @@ 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);
>
> Where's the code which uses this?
It's not in this series -- the initial one was too large, so it was split.
Thanks,
Olek
