diff options
| author | Babu Moger <babu.moger@amd.com> | 2023-10-16 19:23:06 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-10-17 14:05:14 +0200 |
| commit | ca8dad225e237493f19b1c5d4a8531f13a9b078f (patch) | |
| tree | e967dc02adc8576055433c92a2c19e6642444a4b /Documentation | |
| parent | cb07d71f01017b7c2885ed629da9b973cb56b1d2 (diff) | |
| download | lwn-ca8dad225e237493f19b1c5d4a8531f13a9b078f.tar.gz lwn-ca8dad225e237493f19b1c5d4a8531f13a9b078f.zip | |
x86/resctrl: Display CLOSID for resource group
In x86, hardware uses CLOSID to identify a control group. When a user
creates a control group this information is not visible to the user. It
can help resctrl debugging.
Add CLOSID(ctrl_hw_id) to the control groups display in the resctrl
interface. Users can see this detail when resctrl is mounted with the
"-o debug" option.
Other architectures do not use "CLOSID". Use the names ctrl_hw_id to refer
to "CLOSID" in an effort to keep the naming generic.
For example:
$cat /sys/fs/resctrl/ctrl_grp1/ctrl_hw_id
1
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/20231017002308.134480-8-babu.moger@amd.com
Diffstat (limited to 'Documentation')
| -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 68f11611f341..7412252f95a7 100644 --- a/Documentation/arch/x86/resctrl.rst +++ b/Documentation/arch/x86/resctrl.rst @@ -359,6 +359,10 @@ When control is enabled all CTRL_MON groups will also contain: file. On successful pseudo-locked region creation the mode will automatically change to "pseudo-locked". +"ctrl_hw_id": + Available only with debug option. The identifier used by hardware + for the control group. On x86 this is the CLOSID. + When monitoring is enabled all MON groups will also contain: "mon_data": |