Re: [PATCH v2] tools/memory-model: Add extra ordering for locks and remove it for ordinary release/acquire

Peter Zijlstra
2018-07-11T17:01:17Z

On Wed, Jul 11, 2018 at 04:57:51PM +0100, Will Deacon wrote:

> It might be simple to model, but I worry this weakens our locking
> implementations to a point where they will not be understood by the average
> kernel developer. As I've said before, I would prefer "full" RCsc locking,

Another vote for RCsc locks. The (in)famous hold-out is of course
PowerPC, but it now looks like RISC-V is following where they I really
rather wish they didn't.