[PATCH EDAC v26 00/66] EDAC patches for v3.5

From: Mauro Carvalho Chehab
Date: Fri May 18 2012 - 12:33:01 EST

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This is a long series of patches to fix the EDAC subsystem,
and is being under discussions since Jan.

The current EDAC subsystem has several serious issues with regards
to all Intel Xeon and i3/i5/i7 processors. The EDAC subsystem used
to assume that all DIMM memory sticks have the same topology as the
initial PC designs, e. g:

- the DRAM chips inside the DIMM slots are directly
accessible by the memory controller;

- there's no Advanced Memory Bufffer chips between DIMMs
and the memory controller;

- if the memory controller has more than one channel, all
channels are filled with the same memory type/size;

Due to that, all Intel drivers for hardware newer than 2005 (and
some older Intel hardware) have to lie to the EDAC core, providing
fake memory location information.

Also, the memory errors are reported via snprintk/printk's. As the
printk ABI is not preserved among Kernel versions, applications can't
(and don't) rely on it.

So, userspace applications rely, instead, on error counter sysfs
nodes, with don't allow them to do decay and burst detection, nor
to correlate errors among the same address range (with might help
userspace to distinguish between a real error from a temporary
interference.

-

v.26:

- "RAS: Add a tracepoint for reporting memory..." patch was re-written
in order to send to userspace ABI integer fields as such;
- added a fixup atch from Dan.
- The other patches weren't touched on this version.

TODO: improve per-driver error message and error details.

Dan Carpenter (1):
edac_mc: check for allocation failure in edac_mc_alloc()

Joe Perches (2):
edac: Use more normal debugging macro style
edac: Convert debugfX to edac_dbg(X,

Mauro Carvalho Chehab (63):
edac: Create a dimm struct and move the labels into it
edac: move dimm properties to struct dimm_info
edac: Don't initialize csrow's first_page & friends when not needed
edac: move nr_pages to dimm struct
edac: rewrite edac_align_ptr()
edac.h: Add generic layers for describing a memory location
edac: Change internal representation to work with layers
amd64_edac: convert driver to use the new edac ABI
amd76x_edac: convert driver to use the new edac ABI
cell_edac: convert driver to use the new edac ABI
cpc925_edac: convert driver to use the new edac ABI
e752x_edac: convert driver to use the new edac ABI
e7xxx_edac: convert driver to use the new edac ABI
i3000_edac: convert driver to use the new edac ABI
i3200_edac: convert driver to use the new edac ABI
i5000_edac: convert driver to use the new edac ABI
i5100_edac: convert driver to use the new edac ABI
i5400_edac: convert driver to use the new edac ABI
i7300_edac: convert driver to use the new edac ABI
i7core_edac: convert driver to use the new edac ABI
i82443bxgx_edac: convert driver to use the new edac ABI
i82860_edac: convert driver to use the new edac ABI
i82875p_edac: convert driver to use the new edac ABI
i82975x_edac: convert driver to use the new edac ABI
mpc85xx_edac: convert driver to use the new edac ABI
mv64x60_edac: convert driver to use the new edac ABI
pasemi_edac: convert driver to use the new edac ABI
ppc4xx_edac: convert driver to use the new edac ABI
r82600_edac: convert driver to use the new edac ABI
sb_edac: convert driver to use the new edac ABI
tile_edac: convert driver to use the new edac ABI
x38_edac: convert driver to use the new edac ABI
edac: Remove the legacy EDAC ABI
edac: Initialize the dimm label with the known information
edac: Cleanup the logs for i7core and sb edac drivers
i5400_edac: improve debug messages to better represent the filled
memory
RAS: Add a tracepoint for reporting memory controller events
i5000_edac: Fix the logic that retrieves memory information
e752x_edac: provide more info about how DIMMS/ranks are mapped
edac: Rename the parent dev to pdev
edac: use Documentation-nano format for some data structs
edac: rewrite the sysfs code to use struct device
mpc85xx_edac: convert sysfs logic to use struct device
amd64_edac: convert sysfs logic to use struct device
i7core_edac: convert it to use struct device
edac: Get rid of the old kobj's from the edac mc code
edac: add a new per-dimm API and make the old per-virtual-rank API
obsolete
edac: add a sysfs node to report the maximum location for the system
edac: Add debufs nodes to allow doing fake error inject
edac: Move grain/dtype/edac_type calculus to be out of channel loop
i82975x_edac: Test nr_pages earlier to save a few CPU cycles
i5100_edac: Fix a warning when compiled with 32 bits
i7300_edac: Get rid of some wrongly-solved rebase conflict
edac: Only expose csrows/channels on legacy API if they're populated
edac: change the mem allocation scheme to make
Documentation/kobject.txt happy
i7core_edac: change the mem allocation scheme to make
Documentation/kobject.txt happy
edac: move documentation ABI to ABI/testing/sysfs-devices-edac
Edac: Add ABI Documentation for the new device nodes
i5000: Fix the fatal error handling
i7core: fix ranks information at the per-channel struct
edac: Don't add __func__ or __FILE__ for debugf[0-9] msgs
edac_mc: Cleanup per-dimm_info debug messages
edac: Increase version to 3.0.0

Documentation/ABI/testing/sysfs-devices-edac | 140 +++
Documentation/edac.txt | 112 +--
drivers/edac/Kconfig | 8 +
drivers/edac/amd64_edac.c | 513 ++++++-----
drivers/edac/amd64_edac.h | 29 +-
drivers/edac/amd64_edac_dbg.c | 89 +-
drivers/edac/amd64_edac_inj.c | 134 ++--
drivers/edac/amd76x_edac.c | 62 +-
drivers/edac/cell_edac.c | 60 +-
drivers/edac/cpc925_edac.c | 93 ++-
drivers/edac/e752x_edac.c | 140 ++-
drivers/edac/e7xxx_edac.c | 109 ++-
drivers/edac/edac_core.h | 76 +-
drivers/edac/edac_device.c | 74 +-
drivers/edac/edac_device_sysfs.c | 71 +-
drivers/edac/edac_mc.c | 914 ++++++++++++------
drivers/edac/edac_mc_sysfs.c | 1341 ++++++++++++++------------
drivers/edac/edac_module.c | 17 +-
drivers/edac/edac_module.h | 14 +-
drivers/edac/edac_pci.c | 32 +-
drivers/edac/edac_pci_sysfs.c | 49 +-
drivers/edac/i3000_edac.c | 82 +-
drivers/edac/i3200_edac.c | 90 +-
drivers/edac/i5000_edac.c | 399 ++++----
drivers/edac/i5100_edac.c | 108 +--
drivers/edac/i5400_edac.c | 424 ++++----
drivers/edac/i7300_edac.c | 280 +++---
drivers/edac/i7core_edac.c | 749 +++++++--------
drivers/edac/i82443bxgx_edac.c | 82 +-
drivers/edac/i82860_edac.c | 84 +-
drivers/edac/i82875p_edac.c | 91 +-
drivers/edac/i82975x_edac.c | 95 ++-
drivers/edac/mpc85xx_edac.c | 158 ++--
drivers/edac/mv64x60_edac.c | 77 +-
drivers/edac/pasemi_edac.c | 57 +-
drivers/edac/ppc4xx_edac.c | 58 +-
drivers/edac/r82600_edac.c | 78 +-
drivers/edac/sb_edac.c | 460 ++++-----
drivers/edac/tile_edac.c | 39 +-
drivers/edac/x38_edac.c | 86 +-
include/linux/edac.h | 357 ++++++--
include/ras/ras_event.h | 100 ++
42 files changed, 4465 insertions(+), 3566 deletions(-)
create mode 100644 Documentation/ABI/testing/sysfs-devices-edac
create mode 100644 include/ras/ras_event.h

--
1.7.8

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Next message: Mauro Carvalho Chehab: "[PATCH EDAC v26 26/66] mv64x60_edac: convert driver to use the new edac ABI"
Previous message: Tejun Heo: "Re: [PATCH 09/13] block: Add an explicit bio flag for bios thatown their bvec"
Next in thread: Mauro Carvalho Chehab: "[PATCH EDAC v26 26/66] mv64x60_edac: convert driver to use the new edac ABI"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]