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Merge branch 'devel'

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* 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
  ...
This commit is contained in:
Mauro Carvalho Chehab 2012-07-29 21:11:05 -03:00
commit c2078e4c91
48 changed files with 3471 additions and 2555 deletions
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112
Documentation/edac.txt
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@ -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: