EDAC: Expose per-DIMM error counts in sysfs

[sfrench/cifs-2.6.git] / Documentation / admin-guide / ras.rst

diff --git a/Documentation/admin-guide/ras.rst b/Documentation/admin-guide/ras.rst
index d71340e86c27590ff139d309b57e37d755c8dfd7..9939348bd4a3dfae23dc2e3cd4b697dd0c8151dc 100644 (file)
--- a/Documentation/admin-guide/ras.rst
+++ b/Documentation/admin-guide/ras.rst
@@ -438,11 +438,13 @@ A typical EDAC system has the following structure under
        │   │   ├── ce_count
        │   │   ├── ce_noinfo_count
        │   │   ├── dimm0
+       │   │   │   ├── dimm_ce_count
        │   │   │   ├── dimm_dev_type
        │   │   │   ├── dimm_edac_mode
        │   │   │   ├── dimm_label
        │   │   │   ├── dimm_location
        │   │   │   ├── dimm_mem_type
+       │   │   │   ├── dimm_ue_count
        │   │   │   ├── size
        │   │   │   └── uevent
        │   │   ├── max_location
@@ -457,11 +459,13 @@ A typical EDAC system has the following structure under
        │   │   ├── ce_count
        │   │   ├── ce_noinfo_count
        │   │   ├── dimm0
+       │   │   │   ├── dimm_ce_count
        │   │   │   ├── dimm_dev_type
        │   │   │   ├── dimm_edac_mode
        │   │   │   ├── dimm_label
        │   │   │   ├── dimm_location
        │   │   │   ├── dimm_mem_type
+       │   │   │   ├── dimm_ue_count
        │   │   │   ├── size
        │   │   │   └── uevent
        │   │   ├── max_location
@@ -483,6 +487,22 @@ this ``X`` memory module:
        This attribute file displays, in count of megabytes, the memory
        that this csrow contains.
 
+- ``dimm_ue_count`` - Uncorrectable Errors count attribute file
+
+       This attribute file displays the total count of uncorrectable
+       errors that have occurred on this DIMM. If panic_on_ue is set
+       this counter will not have a chance to increment, since EDAC
+       will panic the system.
+
+- ``dimm_ce_count`` - Correctable Errors count attribute file
+
+       This attribute file displays the total count of correctable
+       errors that have occurred on this DIMM. This count is very
+       important to examine. CEs provide early indications that a
+       DIMM is beginning to fail. This count field should be
+       monitored for non-zero values and report such information
+       to the system administrator.
+
 - ``dimm_dev_type``  - Device type attribute file
 
        This attribute file will display what type of DRAM device is