Re: [Suggestion] ARM64: kernel: compiling issue, need implement cmpxchg64 with assembler language.

From: Arnd Bergmann
Date: Fri Apr 19 2013 - 08:13:11 EST


On Friday 19 April 2013, Chen Gang wrote:
> in arch/arm64/include/asm, not define the function cmpxchg64
>
> when compiling with allmodconfig,
> drivers/block/blockconsole.c will need this function.
>
> I am not quite familiar with ARM64 (neither ARM64 assembler)
>
> can any member helps to send related patch ?
> if no one have time to send related patch, I should try.
> and I am glad to try, but need additional time resources,
> if I try, I should finish it within this month (2013-4-30).
>
> welcome any suggestions or completions.

cmpxchg64 is the same as cmpxchg on 64-bit platforms, can't the
driver be changed to use the latter?

Arnd
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