Re: [PATCH v16 11/32] x86,fs/resctrl: Handle events that can be read from any CPU

[Reinette Chatre]

Hi Tony,

On 12/10/25 3:13 PM, Tony Luck wrote:
> resctrl assumes that monitor events can only be read from a CPU in the
> cpumask_t set of each domain.  This is true for x86 events accessed with an
> MSR interface, but may not be true for other access methods such as MMIO.
> 
> Introduce and use flag mon_evt::any_cpu, settable by architecture, that
> indicates there are no restrictions on which CPU can read that event.
> This flag is not supported by the L3 event reading that requires to be run
> on a CPU that belongs to the L3 domain of the event being read.
> 
> Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>
> ---

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

Reinette