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Date:	Thu, 6 Feb 2014 19:30:28 +0100
From:	Peter Zijlstra <>
To:	David Howells <>
Subject: Re: [RFC][PATCH 0/5] arch: atomic rework

On Thu, Feb 06, 2014 at 06:25:49PM +0000, David Howells wrote:
> Is it worth considering a move towards using C11 atomics and barriers and
> compiler intrinsics inside the kernel?  The compiler _ought_ to be able to do
> these.
> One thing I'm not sure of, though, is how well gcc's atomics will cope with
> interrupt handlers touching atomics on CPUs without suitable atomic
> instructions - that said, userspace does have to deal with signals getting
> underfoot. but then userspace can't normally disable interrupts.

I can do an asm-generic/atomic_c11.h if people want.
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