Re: [PATCH v22 14/18] x86/resctrl: Fill out rmid_read structure for smp_call*() to read a counter

[Reinette Chatre]

Hi Tony,

On 6/27/24 1:38 PM, Tony Luck wrote:
> mon_event_read() fills out most fields of the struct rmid_read that is
> passed via an smp_call*() function to a CPU that is part of the correct
> domain to read the monitor counters.
>
> With Sub-NUMA Cluster (SNC) mode there are now two cases to handle:
>
> 1) Reading a file that returns a value for a single domain.
>     + Choose the CPU to execute from the domain cpu_mask
>
> 2) Reading a file that must sum across domains sharing an L3 cache
>     instance.
>     + Indicate to called code that a sum is needed by passing a NULL
>       rdt_mon_domain pointer.
>     + Choose the CPU from the L3 shared_cpu_map.
>
> Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>
> ---

Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>

Reinette