Re: [RFC 0/2] Import and use non-atomic bit-ops

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On Mon, Jan 20, 2020 at 03:43:27PM +0300, Alexey Brodkin wrote:

> The following bitops are implemented pretty similarly for many
> arches and now when we faced a need in them on ARC I guess there's
> no point in copy-pasting them yet another time but instead it might
> be better re-use generic version from the Linux kernel.
> Since we had non of those bitops for ARC inclusion of imported header
> works perfectly fine. As for other arches I do see they use a bit different
> implementation but those might be just older versions etc.
> Sobefore breaking stuff for other arches I'd like to get some feedback
> from maintainers. Or we may just import proposed header and switch to
> its usage arch-by-arch whenever people feel kile cleaning-up their bitops.
> Alexey Brodkin (2):
>   include: Import non-atomic.h from Linux
>   ARC: Add support of bitops via generic implementation
>  arch/arc/include/asm/bitops.h           |   1 +
>  include/asm-generic/bitops/non-atomic.h | 109 ++++++++++++++++++++++++++++++++
>  2 files changed, 110 insertions(+)
>  create mode 100644 include/asm-generic/bitops/non-atomic.h

I would like to see this as a series to re-sync
include/asm-generic/bitops/ with a more recent Linux Kernel release
(it's from v4.2.3 per git log) and then add non-atomic.h and update
nios2 to use it instead of its own copy.  Thanks!


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