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SubjectRe: [PATCH 02/18] compiler.h: Split {READ,WRITE}_ONCE definitions out into rwonce.h
On Tue, Jun 30, 2020 at 7:37 PM Will Deacon <will@kernel.org> wrote:
>
> In preparation for allowing architectures to define their own
> implementation of the READ_ONCE() macro, move the generic
> {READ,WRITE}_ONCE() definitions out of the unwieldy 'linux/compiler.h'
> file and into a new 'rwonce.h' header under 'asm-generic'.
>
> Acked-by: Paul E. McKenney <paulmck@kernel.org>
> Signed-off-by: Will Deacon <will@kernel.org>
> ---
> include/asm-generic/Kbuild | 1 +
> include/asm-generic/rwonce.h | 91 ++++++++++++++++++++++++++++++++++++
> include/linux/compiler.h | 83 +-------------------------------

Very nice, this has the added benefit of allowing us to stop including
asm/barrier.h once linux/compiler.h gets changed to not include
asm/rwonce.h.

The asm/barrier.h header has a circular dependency, pulling in
linux/compiler.h itself.

Arnd

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