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SubjectRe: [PATCH 0/2] Use named address spaces for percpu data
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On 09/12/2018 07:44 AM, Matthew Wilcox wrote:
> rth wrote a patch back in 2016 that uses gcc's address space machinery
> to improve code generation for percpu accesses. Ingo asked for some
> minor changes to be made, but Richard didn't respond. While looking at
> something related, I came across them, and asked Richard's permission
> to resurrect and resend the patch, with the changes Ingo asked for at
> the time.
>
> The important information about why we want these patch is in 1/2.
>
> Richard Henderson (2):
> x86: Use named address spaces in asm/percpu.h
> x86: Enable named address spaces for percpu data
>
> arch/x86/include/asm/percpu.h | 147 ++++++++++++++++++++--------------
> 1 file changed, 88 insertions(+), 59 deletions(-)

Thanks for resurrecting this, Willy. I'd totally forgotten about it.
The adjustments you made look fine.


r~

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