Re: [PATCH v16 24/34] fs/resctrl: Add definitions for MBM event configuration

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Hi Reinette,

On 7/30/25 15:03, Reinette Chatre wrote:
> Hi Babu,
> 
> On 7/25/25 11:29 AM, 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.
>>
>> Add the definitions for supported memory transactions (e.g., read, write,
>> etc.) the counter can be configured with.
>>
>> Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
>> ---
> 
> ...
> 
>> ---
>>  fs/resctrl/internal.h         | 11 +++++++++++
>>  fs/resctrl/monitor.c          | 11 +++++++++++
>>  include/linux/resctrl_types.h |  3 +++
>>  3 files changed, 25 insertions(+)
>>
>> diff --git a/fs/resctrl/internal.h b/fs/resctrl/internal.h
>> index eeee83a5067a..693268bcbad2 100644
>> --- a/fs/resctrl/internal.h
>> +++ b/fs/resctrl/internal.h
> 
> Looks like only monitoring code in monitor.c needs to know about
> struct mbm_transaction so this can stay within monitor.c ?

Sure.

> 
>> @@ -216,6 +216,17 @@ struct rdtgroup {
>>  	struct pseudo_lock_region	*plr;
>>  };
>>  
>> +/**
>> + * struct mbm_transaction - Memory transaction an MBM event can be configured with.
>> + * @name:	Name of memory transaction (read, write ...).
>> + * @val:	The bit (eg. READS_TO_LOCAL_MEM or READS_TO_REMOTE_MEM) used to
>> + *		represent the memory transaction within an event's configuration.
>> + */
>> +struct mbm_transaction {
>> +	char	name[32];
>> +	u32	val;
>> +};
>> +
>>  /* rdtgroup.flags */
>>  #define	RDT_DELETED		1
>>  
> 
> Reinette
> 
> 

-- 
Thanks
Babu Moger





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