| Mauro Carvalho Chehab | 8b6f04c | 2012-04-17 08:53:34 -0300 | [diff] [blame^] | 1 | What: /sys/devices/system/edac/mc/mc*/reset_counters |
| 2 | Date: January 2006 |
| 3 | Contact: linux-edac@vger.kernel.org |
| 4 | Description: This write-only control file will zero all the statistical |
| 5 | counters for UE and CE errors on the given memory controller. |
| 6 | Zeroing the counters will also reset the timer indicating how |
| 7 | long since the last counter were reset. This is useful for |
| 8 | computing errors/time. Since the counters are always reset |
| 9 | at driver initialization time, no module/kernel parameter |
| 10 | is available. |
| 11 | |
| 12 | What: /sys/devices/system/edac/mc/mc*/seconds_since_reset |
| 13 | Date: January 2006 |
| 14 | Contact: linux-edac@vger.kernel.org |
| 15 | Description: This attribute file displays how many seconds have elapsed |
| 16 | since the last counter reset. This can be used with the error |
| 17 | counters to measure error rates. |
| 18 | |
| 19 | What: /sys/devices/system/edac/mc/mc*/mc_name |
| 20 | Date: January 2006 |
| 21 | Contact: linux-edac@vger.kernel.org |
| 22 | Description: This attribute file displays the type of memory controller |
| 23 | that is being utilized. |
| 24 | |
| 25 | What: /sys/devices/system/edac/mc/mc*/size_mb |
| 26 | Date: January 2006 |
| 27 | Contact: linux-edac@vger.kernel.org |
| 28 | Description: This attribute file displays, in count of megabytes, of memory |
| 29 | that this memory controller manages. |
| 30 | |
| 31 | What: /sys/devices/system/edac/mc/mc*/ue_count |
| 32 | Date: January 2006 |
| 33 | Contact: linux-edac@vger.kernel.org |
| 34 | Description: This attribute file displays the total count of uncorrectable |
| 35 | errors that have occurred on this memory controller. If |
| 36 | panic_on_ue is set, this counter will not have a chance to |
| 37 | increment, since EDAC will panic the system |
| 38 | |
| 39 | What: /sys/devices/system/edac/mc/mc*/ue_noinfo_count |
| 40 | Date: January 2006 |
| 41 | Contact: linux-edac@vger.kernel.org |
| 42 | Description: This attribute file displays the number of UEs that have |
| 43 | occurred on this memory controller with no information as to |
| 44 | which DIMM slot is having errors. |
| 45 | |
| 46 | What: /sys/devices/system/edac/mc/mc*/ce_count |
| 47 | Date: January 2006 |
| 48 | Contact: linux-edac@vger.kernel.org |
| 49 | Description: This attribute file displays the total count of correctable |
| 50 | errors that have occurred on this memory controller. This |
| 51 | count is very important to examine. CEs provide early |
| 52 | indications that a DIMM is beginning to fail. This count |
| 53 | field should be monitored for non-zero values and report |
| 54 | such information to the system administrator. |
| 55 | |
| 56 | What: /sys/devices/system/edac/mc/mc*/ce_noinfo_count |
| 57 | Date: January 2006 |
| 58 | Contact: linux-edac@vger.kernel.org |
| 59 | Description: This attribute file displays the number of CEs that |
| 60 | have occurred on this memory controller wherewith no |
| 61 | information as to which DIMM slot is having errors. Memory is |
| 62 | handicapped, but operational, yet no information is available |
| 63 | to indicate which slot the failing memory is in. This count |
| 64 | field should be also be monitored for non-zero values. |
| 65 | |
| 66 | What: /sys/devices/system/edac/mc/mc*/sdram_scrub_rate |
| 67 | Date: February 2007 |
| 68 | Contact: linux-edac@vger.kernel.org |
| 69 | Description: Read/Write attribute file that controls memory scrubbing. |
| 70 | The scrubbing rate used by the memory controller is set by |
| 71 | writing a minimum bandwidth in bytes/sec to the attribute file. |
| 72 | The rate will be translated to an internal value that gives at |
| 73 | least the specified rate. |
| 74 | Reading the file will return the actual scrubbing rate employed. |
| 75 | If configuration fails or memory scrubbing is not implemented, |
| 76 | the value of the attribute file will be -1. |