On Thu, Jul 20, 2023 at 05:30:46PM +0100, Valentin Schneider wrote: > From: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > When a static_key is marked ro_after_init, its state will never change > (after init), therefore jump_label_update() will never need to iterate > the entries, and thus module load won't actually need to track this -- > avoiding the static_key::next write. > > Therefore, mark these keys such that jump_label_add_module() might > recognise them and avoid the modification. > > Use the special state: 'static_key_linked(key) && !static_key_mod(key)' > to denote such keys. > > Link: http://lore.kernel.org/r/20230705204142.GB2813335@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx > NOT-Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> > Signed-off-by: Valentin Schneider <vschneid@xxxxxxxxxx> > --- > @Peter: I've barely touched this patch, it's just been writing a comment > and fixing benign compilation issues, so credit's all yours really! Ah, it works? Excellent! You can remove the NOT from the SoB then ;-)
