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SubjectRe: [PATCH v17 24/33] fs/resctrl: Add event configuration directory under info/L3_MON/
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Hi Babu,

On 8/14/25 7:25 PM, Babu Moger wrote:
> The "mbm_event" counter assignment mode allows the user to assign a
> hardware counter to an RMID, event pair and monitor the bandwidth as long
> as it is assigned. The user can specify the memory transaction(s) for the
> counter to track.
>
> When this mode is supported, the /sys/fs/resctrl/info/L3_MON/event_configs
> directory contains a sub-directory for each MBM event that can be assigned
> to a counter. The MBM event sub-directory contains a file named
> "event_filter" that is used to view and modify which memory transactions
> the MBM event is configured with.
>
> Create /sys/fs/resctrl/info/L3_MON/event_configs directory on resctrl mount
> and pre-populate it with directories for the two existing MBM events:
> mbm_total_bytes and mbm_local_bytes. Create the "event_filter" file within
> each MBM event directory with the needed *show() that displays the memory
> transactions with which the MBM event is configured.
>
> Example:
> $ mount -t resctrl resctrl /sys/fs/resctrl
> $ cd /sys/fs/resctrl/
> $ cat info/L3_MON/event_configs/mbm_total_bytes/event_filter
> local_reads,remote_reads,local_non_temporal_writes,
> remote_non_temporal_writes,local_reads_slow_memory,
> remote_reads_slow_memory,dirty_victim_writes_all
>
> $ cat info/L3_MON/event_configs/mbm_local_bytes/event_filter
> local_reads,local_non_temporal_writes,local_reads_slow_memory
>
> Signed-off-by: Babu Moger <babu.moger@amd.com>
> ---

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

Reinette

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