Re: [PATCH 6/6] sched/topology: Remove SMT/asym capacity warning

[Andrea Righi]

On Tue, Apr 28, 2026 at 07:54:08AM +0200, Andrea Righi wrote:
> On Tue, Apr 28, 2026 at 10:58:05AM +0530, K Prateek Nayak wrote:
> > Hello Andrea,
> > 
> > On 4/28/2026 10:46 AM, Andrea Righi wrote:
> > > @@ -1732,10 +1732,6 @@ sd_init(struct sched_domain_topology_level *tl,
> > >  		.name			= tl->name,
> > >  	};
> > >  
> > > -	WARN_ONCE((sd->flags & (SD_SHARE_CPUCAPACITY | SD_ASYM_CPUCAPACITY)) ==
> > > -		  (SD_SHARE_CPUCAPACITY | SD_ASYM_CPUCAPACITY),
> > > -		  "CPU capacity asymmetry not supported on SMT\n");
> > > -
> > 
> > Wait! Doesn't this mean we have ASYM_CAPACITY between the SMT siblings?
> > That seems wrong since we expect the siblings of cores to have the same
> > capacity.
> > 
> > Have you tripped this warning during your testing?
> 
> Hm... I think you're right, I may have seen this only in a VM, let me double
> check.

Tested and I confirm that I don't see the warning on Vera, so please ignore
PATCH 6/6.

Thanks!
-Andrea