EDAC, MCE: Rework MCE injection

Add sysfs injection facilities for testing of the MCE decoding code.
Remove large parts of amd64_edac_dbg.c, as a result, which did only
NB MCE injection anyway and the new injection code supports that
functionality already.

Add an injection module so that MCE decoding code in production kernels
like those in RHEL and SLES can be tested.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index 70bb350de996..3bb3a671baa0 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -39,7 +39,7 @@ config EDAC_DEBUG
           there're four debug levels (x=0,1,2,3 from low to high).
           Usually you should select 'N'.
 
- config EDAC_DECODE_MCE
+config EDAC_DECODE_MCE
         tristate "Decode MCEs in human-readable form (only on AMD for now)"
         depends on CPU_SUP_AMD && X86_MCE
         default y
@@ -51,6 +51,16 @@ config EDAC_DEBUG
           which occur really early upon boot, before the module infrastructure
           has been initialized.
 
+config EDAC_MCE_INJ
+        tristate "Simple MCE injection interface over /sysfs"
+        depends on EDAC_DECODE_MCE
+        default n
+        help
+          This is a simple interface to inject MCEs over /sysfs and test
+          the MCE decoding code in EDAC.
+
+          This is currently AMD-only.
+
 config EDAC_MM_EDAC
         tristate "Main Memory EDAC (Error Detection And Correction) reporting"
         help
@@ -72,7 +82,7 @@ config EDAC_AMD64
           Families of Memory Controllers (K8, F10h and F11h)
 
 config EDAC_AMD64_ERROR_INJECTION
-        bool "Sysfs Error Injection facilities"
+        bool "Sysfs HW Error injection facilities"
         depends on EDAC_AMD64
         help
           Recent Opterons (Family 10h and later) provide for Memory Error