| Message ID | 20241211172649.761483-12-aleksander.lobakin@intel.com (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | xdp: a fistful of generic changes pt. II | expand |
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@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 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?
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); void __static_key_slow_dec_deferred(struct static_key *key, struct delayed_work *work,
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@intel.com> --- kernel/jump_label.c | 2 ++ 1 file changed, 2 insertions(+)