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

[Andrea Righi]

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.

-Andrea