Re: [PATCH] rtmutex: Add acquire semantics for rtmutex lock acquisition

[Sebastian Andrzej Siewior]

On 2022-12-16 15:58:04 [+0000], Will Deacon wrote:
> I guess bigeasy can give the weaker barrier a try if he has the time, but
> otherwise we can leave the change as-is.

I can't give a try because I have no HW. All I contributed here so far
was based on what you wrote in the previous email and then I spotted the
lack of the barrier of any sorts and asked about it.
I _would_ assume that the cmpxchg_barrier() here would work but I'm far
from knowing.
If the explicit barrier after the cmpxchg_relaxed() is what you two
agree on and it is better/ cheaper/ more obvious then fine. Do it ;)

> Cheers,
> 
> Will

Sebastian