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Diffstat (limited to 'Documentation/ABI/testing/sysfs-edac-scrub')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-edac-scrub | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-edac-scrub b/Documentation/ABI/testing/sysfs-edac-scrub new file mode 100644 index 000000000000..c43be90deab4 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-edac-scrub @@ -0,0 +1,69 @@ +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. + +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. + +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. |