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authorDapeng Mi <dapeng1.mi@linux.intel.com>2026-09-17 09:52:33 +0800
committerIngo Molnar <mingo@kernel.org>2026-09-22 11:37:46 +0200
commit0102c8c7fdfc4bd700971daff2b94470f4eafae4 (patch)
tree531306c2299f9a269f0a986e29f17ba972180104 /Documentation/ABI/testing/sysfs-class-fc
downloadlinux-stable-0102c8c7fdfc4bd700971daff2b94470f4eafae4.tar.gz
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perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rspgrafted
DMR introduces Offmodule Response events in place of the legacy Offcore Response events, but it still exposes the inherited offcore_rsp PMU attribute for programming the corresponding MSR data. Rename the DMR PMU attribute to offmodule_rsp so the sysfs interface matches the underlying event name and avoids user & tooling confusion. Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://patch.msgid.link/20260917015234.981153-12-dapeng1.mi@linux.intel.com
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+What: /sys/class/fc/fc_udev_device/appid_store
+Date: Aug 2021
+Contact: Muneendra Kumar <muneendra.kumar@broadconm.com>
+Description:
+ This interface allows an admin to set an FC application
+ identifier in the blkcg associated with a cgroup id. The
+ identifier is typically a UUID that is associated with
+ an application or logical entity such as a virtual
+ machine or container group. The application or logical
+ entity utilizes a block device via the cgroup id.
+ FC adapter drivers may query the identifier and tag FC
+ traffic based on the identifier. FC host and FC fabric
+ entities can utilize the application id and FC traffic
+ tag to identify traffic sources.
+
+ The interface expects a string "<cgroupid>:<appid>" where:
+ <cgroupid> is inode of the cgroup in hexadecimal
+ <appid> is user provided string upto 128 characters
+ in length.
+
+ If an appid_store is done for a cgroup id that already
+ has an appid set, the new value will override the
+ previous value.
+
+ If an admin wants to remove an FC application identifier
+ from a cgroup, an appid_store should be done with the
+ following string: "<cgroupid>:"