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authorBabu Moger <babu.moger@amd.com>2023-10-16 19:23:06 -0500
committerBorislav Petkov (AMD) <bp@alien8.de>2023-10-17 14:05:14 +0200
commitca8dad225e237493f19b1c5d4a8531f13a9b078f (patch)
treee967dc02adc8576055433c92a2c19e6642444a4b /Documentation/arch
parentcb07d71f01017b7c2885ed629da9b973cb56b1d2 (diff)
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/arch')
-rw-r--r--Documentation/arch/x86/resctrl.rst4
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":