linux/drivers/edac, branch v3.9

EDAC: Merge mci.mem_is_per_rank with mci.csbased

2013-03-16T05:32:30Z

Both mci.mem_is_per_rank and mci.csbased denote the same thing: the memory controller is csrows based. Merge both fields into one. There's no need for the driver to actually fill it, as the core detects it by checking if one of the layers has the csrows type as part of the memory hierarchy: if (layers[i].type == EDAC_MC_LAYER_CHIP_SELECT) per_rank = true; Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Borislav Petkov

amd64_edac: Correct DIMM sizes

2013-03-16T05:32:02Z

We were filling the csrow size with a wrong value. 16a528ee3975 ("EDAC: Fix csrow size reported in sysfs") tried to address the issue. It fixed the report with the old API but not with the new one. Correct it for the new API too. Signed-off-by: Mauro Carvalho Chehab [ make it a per-csrow accounting regardless of ->channel_count ] Signed-off-by: Borislav Petkov

EDAC: Make sysfs functions static

2013-03-05T10:33:57Z

Fixes lots of sparse warnings here. Signed-off-by: Stephen Hemminger Signed-off-by: Borislav Petkov

Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac

2013-03-01T04:42:33Z

Pull EDAC fixes and ghes-edac from Mauro Carvalho Chehab: "For: - Some fixes at edac drivers (i7core_edac, sb_edac, i3200_edac); - error injection support for i5100, when EDAC debug is enabled; - fix edac when it is loaded builtin (early init for the subsystem); - a "Firmware First" EDAC driver, allowing ghes to report errors via EDAC (ghes-edac). With regards to ghes-edac, this fixes a longstanding BZ at Red Hat that happens with Nehalem and Sandy Bridge CPUs: when both GHES and i7core_edac or sb_edac are running, the error reports are unpredictable, as both BIOS and OS race to access the registers. With ghes-edac, the EDAC core will refuse to register any other concurrent memory error driver. This patchset moves the ghes struct definitions to a separate header file (include/acpi/ghes.h) and adds 3 hooks at apei/ghes.c to register/unregister and to report errors via ghes-edac. Those changes were acked by ghes driver maintainer (Huang)." * 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (30 commits) i5100_edac: convert to use simple_open() ghes_edac: fix to use list_for_each_entry_safe() when delete list items ghes_edac: Fix RAS tracing ghes_edac: Make it compliant with UEFI spec 2.3.1 ghes_edac: Improve driver's printk messages ghes_edac: Don't credit the same memory dimm twice ghes_edac: do a better job of filling EDAC DIMM info ghes_edac: add support for reporting errors via EDAC ghes_edac: Register at EDAC core the BIOS report ghes: add the needed hooks for EDAC error report ghes: move structures/enum to a header file edac: add support for error type "Info" edac: add support for raw error reports edac: reduce stack pressure by using a pre-allocated buffer edac: lock module owner to avoid error report conflicts edac: remove proc_name from mci structure edac: add a new memory layer type edac: initialize the core earlier edac: better report error conditions in debug mode i5100_edac: Remove two checkpatch warnings ...

i5100_edac: convert to use simple_open()

2013-02-26T13:06:18Z

This removes an open coded simple_open() function and replaces file operations references to the function with simple_open() instead. Signed-off-by: Wei Yongjun Signed-off-by: Mauro Carvalho Chehab

ghes_edac: fix to use list_for_each_entry_safe() when delete list items

2013-02-26T13:05:35Z

Since we will remove items off the list using list_del() we need to use a safe version of the list_for_each_entry() macro aptly named list_for_each_entry_safe(). Signed-off-by: Wei Yongjun Signed-off-by: Mauro Carvalho Chehab

ghes_edac: Fix RAS tracing

2013-02-25T22:42:17Z

With the current version of CPER, there's no way to associate an error with the memory error. So, the error location in EDAC layers is unused. As CPER has its own idea about memory architectural layers, just output whatever is there inside the driver's detail at the RAS tracepoint. The EDAC location keeps untouched, in the case that, in some future, we could actually map the error into the dimm labels. Now, the error message: [ 72.396625] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0 [ 72.396627] {1}[Hardware Error]: APEI generic hardware error status [ 72.396628] {1}[Hardware Error]: severity: 2, corrected [ 72.396630] {1}[Hardware Error]: section: 0, severity: 2, corrected [ 72.396632] {1}[Hardware Error]: flags: 0x01 [ 72.396634] {1}[Hardware Error]: primary [ 72.396635] {1}[Hardware Error]: section_type: memory error [ 72.396637] {1}[Hardware Error]: error_status: 0x0000000000000400 [ 72.396638] {1}[Hardware Error]: node: 3 [ 72.396639] {1}[Hardware Error]: card: 0 [ 72.396640] {1}[Hardware Error]: module: 0 [ 72.396641] {1}[Hardware Error]: device: 0 [ 72.396643] {1}[Hardware Error]: error_type: 18, unknown [ 72.396666] EDAC MC0: 1 CE reserved error (18) on unknown label (node:3 card:0 module:0 page:0x0 offset:0x0 grain:0 syndrome:0x0 - status(0x0000000000000400): Storage error in DRAM memory) Is properly represented on the trace event: kworker/0:2-584 [000] .... 72.396657: mc_event: 1 Corrected error: reserved error (18) on unknown label (mc:0 location:-1:-1:-1 address:0x00000000 grain:1 syndrome:0x00000000 APEI location: node:3 card:0 module:0 status(0x0000000000000400): Storage error in DRAM memory) Tested on a 4 sockets E5-4650 Sandy Bridge machine. Signed-off-by: Mauro Carvalho Chehab

ghes_edac: Make it compliant with UEFI spec 2.3.1

2013-02-25T22:42:16Z

The UEFI spec defines the memory error types ans the bits that validate each field on the memory error record, at Appendix N om items N.2.5 (Memory Error Section) and N.2.11 (Error Status). Make the error description compliant with it, only showing the valid fields. The EDAC error log is now properly reporting the error: [ 281.556854] mce: [Hardware Error]: Machine check events logged [ 281.557042] {2}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0 [ 281.557044] {2}[Hardware Error]: APEI generic hardware error status [ 281.557046] {2}[Hardware Error]: severity: 2, corrected [ 281.557048] {2}[Hardware Error]: section: 0, severity: 2, corrected [ 281.557050] {2}[Hardware Error]: flags: 0x01 [ 281.557052] {2}[Hardware Error]: primary [ 281.557053] {2}[Hardware Error]: section_type: memory error [ 281.557055] {2}[Hardware Error]: error_status: 0x0000000000000400 [ 281.557056] {2}[Hardware Error]: node: 3 [ 281.557057] {2}[Hardware Error]: card: 0 [ 281.557058] {2}[Hardware Error]: module: 1 [ 281.557059] {2}[Hardware Error]: device: 0 [ 281.557061] {2}[Hardware Error]: error_type: 18, unknown [ 281.557067] EDAC DEBUG: ghes_edac_report_mem_error: error validation_bits: 0x000040b9 [ 281.557084] EDAC MC0: 1 CE reserved error (18) on unknown label (node:3 card:0 module:1 page:0x0 offset:0x0 grain:0 syndrome:0x0 - status(0x0000000000000400): Storage error in DRAM memory) Tested on a 4 CPUs E5-4650 Sandy Bridge machine. Signed-off-by: Mauro Carvalho Chehab

ghes_edac: Improve driver's printk messages

2013-02-25T22:42:15Z

Provide a better infrastructure for printk's inside the driver: - use edac_dbg() for debug messages; - standardize the usage of pr_info(); - provide warning about the risk of relying on this driver. While here, changes the size of a fake memory to 1 page. This is as good or as bad as 1000 pages, but it is easier for userspace to detect, as I don't expect that any machine implementing GHES would provide just 1 page available ;) Signed-off-by: Mauro Carvalho Chehab Conflicts: drivers/edac/ghes_edac.c

ghes_edac: Don't credit the same memory dimm twice

2013-02-25T22:42:14Z

On my tests on a 4xE5-4650 CPU's system, the GHES EDAC driver is called twice. As the SMBIOS DMI enumeration call will seek for the entire DIMM sockets in the system, on this machine, equipped with 128 GB of RAM, the memory is displayed twice: +-----------------------+ | mc0 | mc1 | ----------+-----------------------+ memory45: | 8192 MB | 8192 MB | memory44: | 0 MB | 0 MB | ----------+-----------------------+ memory43: | 0 MB | 0 MB | memory42: | 8192 MB | 8192 MB | ----------+-----------------------+ memory41: | 0 MB | 0 MB | memory40: | 0 MB | 0 MB | ----------+-----------------------+ memory39: | 8192 MB | 8192 MB | memory38: | 0 MB | 0 MB | ----------+-----------------------+ memory37: | 0 MB | 0 MB | memory36: | 8192 MB | 8192 MB | ----------+-----------------------+ memory35: | 0 MB | 0 MB | memory34: | 0 MB | 0 MB | ----------+-----------------------+ memory33: | 8192 MB | 8192 MB | memory32: | 0 MB | 0 MB | ----------+-----------------------+ memory31: | 0 MB | 0 MB | memory30: | 8192 MB | 8192 MB | ----------+-----------------------+ memory29: | 0 MB | 0 MB | memory28: | 0 MB | 0 MB | ----------+-----------------------+ memory27: | 8192 MB | 8192 MB | memory26: | 0 MB | 0 MB | ----------+-----------------------+ memory25: | 0 MB | 0 MB | memory24: | 8192 MB | 8192 MB | ----------+-----------------------+ memory23: | 0 MB | 0 MB | memory22: | 0 MB | 0 MB | ----------+-----------------------+ memory21: | 8192 MB | 8192 MB | memory20: | 0 MB | 0 MB | ----------+-----------------------+ memory19: | 0 MB | 0 MB | memory18: | 8192 MB | 8192 MB | ----------+-----------------------+ memory17: | 0 MB | 0 MB | memory16: | 0 MB | 0 MB | ----------+-----------------------+ memory15: | 8192 MB | 8192 MB | memory14: | 0 MB | 0 MB | ----------+-----------------------+ memory13: | 0 MB | 0 MB | memory12: | 8192 MB | 8192 MB | ----------+-----------------------+ memory11: | 0 MB | 0 MB | memory10: | 0 MB | 0 MB | ----------+-----------------------+ memory9: | 8192 MB | 8192 MB | memory8: | 0 MB | 0 MB | ----------+-----------------------+ memory7: | 0 MB | 0 MB | memory6: | 8192 MB | 8192 MB | ----------+-----------------------+ memory5: | 0 MB | 0 MB | memory4: | 0 MB | 0 MB | ----------+-----------------------+ memory3: | 8192 MB | 8192 MB | memory2: | 0 MB | 0 MB | ----------+-----------------------+ memory1: | 0 MB | 0 MB | memory0: | 8192 MB | 8192 MB | ----------+-----------------------+ Total sum of 256 GB. As there's no reliable way to credit DIMMS to the right memory controller, just put everything on memory controller 0 (with should always exist). Signed-off-by: Mauro Carvalho Chehab