aboutsummaryrefslogtreecommitdiff
path: root/Documentation/edac.txt
diff options
context:
space:
mode:
authorMauro Carvalho Chehab <mchehab@redhat.com>2012-07-29 21:11:05 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-07-29 21:11:05 -0300
commitc2078e4c9120e7b38b1a02cd9fc6dd4f792110bf (patch)
treea30b29c0bf8cf2288a32ceaeb75013cb0b5d5865 /Documentation/edac.txt
parent73bcc49959e4e40911dd0dd634bf1b353827df66 (diff)
parentf58d0dee07fe6328f775669eb6aa3a123efad6c2 (diff)
downloadlinux-c2078e4c9120e7b38b1a02cd9fc6dd4f792110bf.tar.gz
Merge branch 'devel'
* devel: (33 commits) edac i5000, i5400: fix pointer math in i5000_get_mc_regs() edac: allow specifying the error count with fake_inject edac: add support for Calxeda highbank L2 cache ecc edac: add support for Calxeda highbank memory controller edac: create top-level debugfs directory sb_edac: properly handle error count i7core_edac: properly handle error count edac: edac_mc_handle_error(): add an error_count parameter edac: remove arch-specific parameter for the error handler amd64_edac: Don't pass driver name as an error parameter edac_mc: check for allocation failure in edac_mc_alloc() edac: Increase version to 3.0.0 edac_mc: Cleanup per-dimm_info debug messages edac: Convert debugfX to edac_dbg(X, edac: Use more normal debugging macro style edac: Don't add __func__ or __FILE__ for debugf[0-9] msgs Edac: Add ABI Documentation for the new device nodes edac: move documentation ABI to ABI/testing/sysfs-devices-edac i7core_edac: change the mem allocation scheme to make Documentation/kobject.txt happy edac: change the mem allocation scheme to make Documentation/kobject.txt happy ...
Diffstat (limited to 'Documentation/edac.txt')
-rw-r--r--Documentation/edac.txt112
1 files changed, 8 insertions, 104 deletions
diff --git a/Documentation/edac.txt b/Documentation/edac.txt
index 03df2b02033..56c7e936430 100644
--- a/Documentation/edac.txt
+++ b/Documentation/edac.txt
@@ -232,116 +232,20 @@ EDAC control and attribute files.
In 'mcX' directories are EDAC control and attribute files for
-this 'X' instance of the memory controllers:
-
-
-Counter reset control file:
-
- 'reset_counters'
-
- This write-only control file will zero all the statistical counters
- for UE and CE errors. Zeroing the counters will also reset the timer
- indicating how long since the last counter zero. This is useful
- for computing errors/time. Since the counters are always reset at
- driver initialization time, no module/kernel parameter is available.
-
- RUN TIME: echo "anything" >/sys/devices/system/edac/mc/mc0/counter_reset
-
- This resets the counters on memory controller 0
-
-
-Seconds since last counter reset control file:
-
- 'seconds_since_reset'
-
- This attribute file displays how many seconds have elapsed since the
- last counter reset. This can be used with the error counters to
- measure error rates.
-
-
-
-Memory Controller name attribute file:
-
- 'mc_name'
-
- This attribute file displays the type of memory controller
- that is being utilized.
-
-
-Total memory managed by this memory controller attribute file:
-
- 'size_mb'
-
- This attribute file displays, in count of megabytes, of memory
- that this instance of memory controller manages.
-
-
-Total Uncorrectable Errors count attribute file:
-
- 'ue_count'
-
- This attribute file displays the total count of uncorrectable
- errors that have occurred on this memory controller. If panic_on_ue
- is set this counter will not have a chance to increment,
- since EDAC will panic the system.
-
-
-Total UE count that had no information attribute fileY:
-
- 'ue_noinfo_count'
-
- This attribute file displays the number of UEs that have occurred
- with no information as to which DIMM slot is having errors.
-
-
-Total Correctable Errors count attribute file:
-
- 'ce_count'
-
- This attribute file displays the total count of correctable
- errors that have occurred on this memory controller. 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.
-
-
-Total Correctable Errors count attribute file:
-
- 'ce_noinfo_count'
-
- This attribute file displays the number of CEs that
- have occurred wherewith no information as to which DIMM slot
- is having errors. Memory is handicapped, but operational,
- yet no information is available to indicate which slot
- the failing memory is in. This count field should be also
- be monitored for non-zero values.
-
-Device Symlink:
-
- 'device'
-
- Symlink to the memory controller device.
-
-Sdram memory scrubbing rate:
-
- 'sdram_scrub_rate'
-
- Read/Write attribute file that controls memory scrubbing. The scrubbing
- rate is set by writing a minimum bandwidth in bytes/sec to the attribute
- file. The rate will be translated to an internal value that gives at
- least the specified rate.
-
- Reading the file will return the actual scrubbing rate employed.
-
- If configuration fails or memory scrubbing is not implemented, accessing
- that attribute will fail.
+this 'X' instance of the memory controllers.
+For a description of the sysfs API, please see:
+ Documentation/ABI/testing/sysfs/devices-edac
============================================================================
'csrowX' DIRECTORIES
+When CONFIG_EDAC_LEGACY_SYSFS is enabled, the sysfs will contain the
+csrowX directories. As this API doesn't work properly for Rambus, FB-DIMMs
+and modern Intel Memory Controllers, this is being deprecated in favor
+of dimmX directories.
+
In the 'csrowX' directories are EDAC control and attribute files for
this 'X' instance of csrow: