Re: [PATCH v5 4/9] perf/x86: Add compiler barrier after updating BTS

[Leo Yan]

Hi Peter,

On Tue, Sep 14, 2021 at 11:51:36AM +0200, Peter Zijlstra wrote:
> On Sun, Aug 29, 2021 at 06:56:57PM +0800, Leo Yan wrote:
> > Hi Peter, or any x86 maintainer,
> > 
> > On Mon, Aug 09, 2021 at 07:14:02PM +0800, Leo Yan wrote:
> > > Since BTS is coherent, simply add a compiler barrier to separate the BTS
> > > update and aux_head store.
> > 
> > Could you reivew this patch and check if BTS needs the comipler
> > barrier in this case?  Thanks.
> 
> Yes, a compiler barrier is sufficient.
> 
> You want me to pick it up?

Maybe other maintainers are more suitable than me to answer this :)

Yeah, I think it's great if you could pick it.

Thanks,
Leo