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| author | Aaron Miller <aaronmiller@fb.com> | 2016-11-03 23:01:53 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2017-01-19 10:29:40 +0100 |
| commit | 4fb6fde74d6724dc6d64ec729f950fbdeefd7f07 (patch) | |
| tree | d0030c8f6195834f3d410ca70ce5f4561bc34ec9 /Documentation/admin-guide/ras.rst | |
| parent | EDAC, amd64: Save and return err code from probe_one_instance() (diff) | |
| download | linux-4fb6fde74d6724dc6d64ec729f950fbdeefd7f07.tar.xz linux-4fb6fde74d6724dc6d64ec729f950fbdeefd7f07.zip | |
EDAC: Expose per-DIMM error counts in sysfs
The old csrowX sysfs directories have per-csrow error counters, but the
new dimmX directories do not currently expose error counts.
EDAC already keeps these counts, add them to sysfs so per-DIMM counts
are still available when CONFIG_EDAC_LEGACY_SYSFS=n.
Signed-off-by: Aaron Miller <aaronmiller@fb.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20161103220153.3997328-1-aaronmiller@fb.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'Documentation/admin-guide/ras.rst')
| -rw-r--r-- | Documentation/admin-guide/ras.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/admin-guide/ras.rst b/Documentation/admin-guide/ras.rst index d71340e86c27..9939348bd4a3 100644 --- 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 |