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| author | Babu Moger <babu.moger@amd.com> | 2023-10-16 19:23:08 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-10-17 14:05:40 +0200 |
| commit | 4cee14bcb14881aae81d60f106a335c68553ac1f (patch) | |
| tree | 77564c2bea63f398802f2365a8a8943fb78e8f3c /Documentation/arch | |
| parent | 918f211b5e4e709e91acf856967a850569c96b71 (diff) | |
| download | linux-4cee14bcb14881aae81d60f106a335c68553ac1f.tar.gz | |
x86/resctrl: Display RMID of resource group
In x86, hardware uses RMID to identify a monitoring group. When a user
creates a monitor group these details are not visible. These details
can help resctrl debugging.
Add RMID(mon_hw_id) to the monitor groups display in the resctrl interface.
Users can see these details when resctrl is mounted with "-o debug" option.
Add RFTYPE_MON_BASE that complements existing RFTYPE_CTRL_BASE and
represents files belonging to monitoring groups.
Other architectures do not use "RMID". Use the name mon_hw_id to refer
to "RMID" in an effort to keep the naming generic.
For example:
$cat /sys/fs/resctrl/mon_groups/mon_grp1/mon_hw_id
3
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Peter Newman <peternewman@google.com>
Reviewed-by: Tan Shaopeng <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Tested-by: Peter Newman <peternewman@google.com>
Tested-by: Tan Shaopeng <tan.shaopeng@jp.fujitsu.com>
Link: https://lore.kernel.org/r/20231017002308.134480-10-babu.moger@amd.com
Diffstat (limited to 'Documentation/arch')
| -rw-r--r-- | Documentation/arch/x86/resctrl.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/arch/x86/resctrl.rst b/Documentation/arch/x86/resctrl.rst index 7412252f95a7d..a6279df64a9db 100644 --- a/Documentation/arch/x86/resctrl.rst +++ b/Documentation/arch/x86/resctrl.rst @@ -376,6 +376,10 @@ When monitoring is enabled all MON groups will also contain: the sum for all tasks in the CTRL_MON group and all tasks in MON groups. Please see example section for more details on usage. +"mon_hw_id": + Available only with debug option. The identifier used by hardware + for the monitor group. On x86 this is the RMID. + Resource allocation rules ------------------------- |