git: fc301c224b27 - stable/13 - atomic: add stub atomic_load_consume_ptr

[Jessica Clarke]

On 1 Feb 2021, at 13:53, Hans Petter Selasky <hps at selasky.org> wrote:
> On 2/1/21 1:40 PM, Mateusz Guzik wrote:
>> +/*
>> + * Currently all architectures provide acquire and release fences on their own,
>> + * but they don't provide consume. Kludge below allows relevant code to stop
>> + * openly resorting to the stronger acquire fence, to be sorted out.
>> + */
>> +#define	atomic_load_consume_ptr(p)	\
>> +    ((__typeof(*p)) atomic_load_acq_ptr((uintptr_t *)p))
>> +
> 
> Are you missing:
> 
> CTASSERT(sizeof(*p) == sizeof(void *)) ????

I also commented on the head commit that this is a waste of time and
will likely never be anything other than an acquire, but never got a
reply.

Jess