Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
From: Segher Boessenkool <hidden>
Date: 2007-08-20 22:14:58
Also in:
linux-arch, lkml
Such code generally doesn't care precisely when it gets the update, just that the update is atomic, and it doesn't loop forever.
Yes, it _does_ care that it gets the update _at all_, and preferably as early as possible.
Regardless, I'm convinced we just need to do it all in assembly.
So do you want "volatile asm" or "plain asm", for atomic_read()? The asm version has two ways to go about it too... Segher