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

1 files changed, 85 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-edac-scrub b/Documentation/ABI/testing/sysfs-edac-scrub
new file mode 100644
index 000000000..ab6014743
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-edac-scrub
@@ -0,0 +1,85 @@
+What:		/sys/bus/edac/devices/<dev-name>/scrubX
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	linux-edac@vger.kernel.org
+Description:
+		The sysfs EDAC bus devices /<dev-name>/scrubX subdirectory
+		belongs to an instance of memory scrub control feature,
+		where <dev-name> directory corresponds to a device/memory
+		region registered with the EDAC device driver for the
+		scrub control feature.
+
+		The sysfs scrub attr nodes are only present if the parent
+		driver has implemented the corresponding attr callback
+		function and provided the necessary operations to the EDAC
+		device driver during registration.
+
+What:		/sys/bus/edac/devices/<dev-name>/scrubX/addr
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	linux-edac@vger.kernel.org
+Description:
+		(RW) The base address of the memory region to be scrubbed
+		for on-demand scrubbing. Setting address starts scrubbing.
+		The size must be set before that.
+
+		The readback addr value is non-zero if the requested
+		on-demand scrubbing is in progress, zero otherwise.
+
+What:		/sys/bus/edac/devices/<dev-name>/scrubX/size
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	linux-edac@vger.kernel.org
+Description:
+		(RW) The size of the memory region to be scrubbed
+		(on-demand scrubbing).
+
+What:		/sys/bus/edac/devices/<dev-name>/scrubX/enable_background
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	linux-edac@vger.kernel.org
+Description:
+		(RW) Start/Stop background (patrol) scrubbing if supported.
+
+What:		/sys/bus/edac/devices/<dev-name>/scrubX/min_cycle_duration
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	linux-edac@vger.kernel.org
+Description:
+		(RO) Supported minimum scrub cycle duration in seconds
+		by the memory scrubber.
+
+		Device-based scrub: returns the minimum scrub cycle
+		supported by the memory device.
+
+		Region-based scrub: returns the max of minimum scrub cycles
+		supported by individual memory devices that back the region.
+
+What:		/sys/bus/edac/devices/<dev-name>/scrubX/max_cycle_duration
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	linux-edac@vger.kernel.org
+Description:
+		(RO) Supported maximum scrub cycle duration in seconds
+		by the memory scrubber.
+
+		Device-based scrub: returns the maximum scrub cycle supported
+		by the memory device.
+
+		Region-based scrub: returns the min of maximum scrub cycles
+		supported by individual memory devices that back the region.
+
+		If the memory device does not provide maximum scrub cycle
+		information, return the maximum supported value of the scrub
+		cycle field.
+
+What:		/sys/bus/edac/devices/<dev-name>/scrubX/current_cycle_duration
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	linux-edac@vger.kernel.org
+Description:
+		(RW) The current scrub cycle duration in seconds and must be
+		within the supported range by the memory scrubber.
+
+		Scrub has an overhead when running and that may want to be
+		reduced by taking longer to do it.