[PATCH 1/2] Optimize generic spinlock code and use C11 like atomic macros.

[Andreas Schwab]

On Apr 10 2017, Stefan Liebler <stli@linux.vnet.ibm.com> wrote:

> On 04/10/2017 10:17 AM, Andreas Schwab wrote:
>> On Apr 07 2017, Stefan Liebler <stli@linux.vnet.ibm.com> wrote:
>>
>>> /* ATOMIC_EXCHANGE_USES_CAS is equal to 1 if atomic_exchange operations
>>
>> Why 1 exactly, and not just non-zero?
>>
>> Andreas.
>>
>
> This points out that there is only a true/false choice and
> all architectures have to define it.

That doesn't answer my question.  Why do you need the dance of checking
for 1 explicitly?

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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