Hi Reinette,
On 1/4/23 18:29, Reinette Chatre wrote:
> Hi Babu,
>
> On 12/22/2022 3:31 PM, Babu Moger wrote:
>> The event configuration can be viewed by the user by reading the
>> configuration file /sys/fs/resctrl/info/L3_MON/mbm_total_bytes_config.
>> The event configuration settings are domain specific and will affect all
>> the CPUs in the domain.
>>
>> Following are the types of events supported:
>> ==== ===========================================================
>> Bits Description
>> ==== ===========================================================
>> 6 Dirty Victims from the QOS domain to all types of memory
>> 5 Reads to slow memory in the non-local NUMA domain
>> 4 Reads to slow memory in the local NUMA domain
>> 3 Non-temporal writes to non-local NUMA domain
>> 2 Non-temporal writes to local NUMA domain
>> 1 Reads to memory in the non-local NUMA domain
>> 0 Reads to memory in the local NUMA domain
>> ==== ===========================================================
>>
>> By default, the mbm_total_bytes_config is set to 0x7f to count all the
>> event types.
>>
>> For example:
>> $cat /sys/fs/resctrl/info/L3_MON/mbm_total_bytes_config
>> 0=0x7f;1=0x7f;2=0x7f;3=0x7f
>>
>> In this case, the event mbm_total_bytes is configured with 0x7f on
>> domains 0 to 3.
>>
>> Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
> ...
>
>> --- a/arch/x86/kernel/cpu/resctrl/internal.h
>> +++ b/arch/x86/kernel/cpu/resctrl/internal.h
>> @@ -30,6 +30,29 @@
>> */
>> #define MBM_CNTR_WIDTH_OFFSET_MAX (62 - MBM_CNTR_WIDTH_BASE)
>>
>> +/* Reads to Local DRAM Memory */
>> +#define READS_TO_LOCAL_MEM BIT(0)
>> +
>> +/* Reads to Remote DRAM Memory */
>> +#define READS_TO_REMOTE_MEM BIT(1)
>> +
>> +/* Non-Temporal Writes to Local Memory */
>> +#define NON_TEMP_WRITE_TO_LOCAL_MEM BIT(2)
>> +
>> +/* Non-Temporal Writes to Remote Memory */
>> +#define NON_TEMP_WRITE_TO_REMOTE_MEM BIT(3)
>> +
>> +/* Reads to Local Memory the system identifies as "Slow Memory" */
>> +#define READS_TO_LOCAL_S_MEM BIT(4)
>> +
>> +/* Reads to Remote Memory the system identifies as "Slow Memory" */
>> +#define READS_TO_REMOTE_S_MEM BIT(5)
>> +
>> +/* Dirty Victims to All Types of Memory */
>> +#define DIRTY_VICTIMS_TO_ALL_MEM BIT(6)
> Some stray white space above.
Sure.
>
>> +
>> +/* Max event bits supported */
>> +#define MAX_EVT_CONFIG_BITS GENMASK(6, 0)
>>
>> struct rdt_fs_context {
>> struct kernfs_fs_context kfc;
> Please remove stray white space. With that:
>
> Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
Thanks
Babu
>
> Reinette
>
>
--
Thanks
Babu Moger
