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| /openbmc/linux/arch/x86/kernel/cpu/resctrl/ |
| H A D | monitor.c | diff 73afb2d3ce2d7e0f9eee14e3f2b53d2bbfefd9c8 Fri Jan 13 09:20:36 CST 2023 Babu Moger <babu.moger@amd.com> x86/resctrl: Add interface to read mbm_local_bytes_config
The event configuration can be viewed by the user by reading the configuration
file /sys/fs/resctrl/info/L3_MON/mbm_local_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_local_bytes_config is set to 0x15 to count all the local
event types.
For example:
$cat /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config
0=0x15;1=0x15;2=0x15;3=0x15
In this case, the event mbm_local_bytes is configured with 0x15 on
domains 0 to 3.
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/r/20230113152039.770054-11-babu.moger@amd.com
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| H A D | rdtgroup.c | diff 73afb2d3ce2d7e0f9eee14e3f2b53d2bbfefd9c8 Fri Jan 13 09:20:36 CST 2023 Babu Moger <babu.moger@amd.com> x86/resctrl: Add interface to read mbm_local_bytes_config
The event configuration can be viewed by the user by reading the configuration
file /sys/fs/resctrl/info/L3_MON/mbm_local_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_local_bytes_config is set to 0x15 to count all the local
event types.
For example:
$cat /sys/fs/resctrl/info/L3_MON/mbm_local_bytes_config
0=0x15;1=0x15;2=0x15;3=0x15
In this case, the event mbm_local_bytes is configured with 0x15 on
domains 0 to 3.
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/r/20230113152039.770054-11-babu.moger@amd.com
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