[Mesa-dev] [PATCH] disk cache: Link with -latomic if necessary

[Matt Turner]

On Tue, Feb 27, 2018 at 2:26 AM, Thierry Reding
<thierry.reding at gmail.com> wrote:
> On Mon, Feb 26, 2018 at 11:14:05AM -0800, Matt Turner wrote:
>> On Fri, Feb 23, 2018 at 5:18 AM, Thierry Reding
>> <thierry.reding at gmail.com> wrote:
>> > From: Thierry Reding <treding at nvidia.com>
>> >
>> > The disk cache implementation uses 64-bit atomic operations. For some
>> > architectures, such as 32-bit ARM, GCC will not be able to translate
>> > these operations into lock-free instructions and will instead rely on
>>
>> Here, and in the comment in meson.build, I think you mean "atomic"
>> rather than "lock-free" instructions? It's at least confusing, since
>> on x86 atomic instructions have a "lock" prefix.
>
> This uses the terminology used by the GCC documentation, see:
>
>         https://gcc.gnu.org/wiki/Atomic/GCCMM
>
> I think the GCC terms merely mean that you don't need any explicit
> locking for these operations to be atomic.
>
> How about this instead:
>
>         "... operations into atomic, lock-free instructions..."
>
> ?

Ah, I see. Thanks, that works for me.