On Thu, Apr 16, 2020 at 01:45:39PM +0100, Will Deacon wrote:
> Sorry I missed this, I'm over on @kernel.org now and don't have access to
> my old @arm.com address anymore.
Oops. Shame they haven't started bouncing it yet, so I didn't know.
> > -static inline bool clear_bit_unlock_is_negative_byte(long nr, volatile void *mem)
> > -{
> > - clear_bit_unlock(nr, mem);
> > - /* smp_mb__after_atomic(); */
> > - return test_bit(PG_waiters, mem);
> > -}
>
> I'd really like to do this, but I worry that the generic definition still
> isn't available on all architectures depending on how they pull together
> their bitops.h. Have you tried building for alpha or s390? At a quick
> glance, they look like they might fall apart :(
I haven't, but fortunately the 0day build bot has! It built both s390 and
alpha successfully (as well as 120+ other configurations).
