diff options
| author |   Borislav Petkov <borislav.petkov@amd.com> | 2009-10-02 15:31:48 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-10-02 15:42:19 +0200 |
| commit | 0d18b2e34bd1ad8f5bd3f3a17b5e7df132e511a9 (patch) | |
| tree | ec8968797976e386245fb383a5cee800b6b75140 /drivers/edac | |
| parent | initcalls: Add early_initcall() for modules (diff) | |
| download | linux-dev-0d18b2e34bd1ad8f5bd3f3a17b5e7df132e511a9.tar.xz linux-dev-0d18b2e34bd1ad8f5bd3f3a17b5e7df132e511a9.zip | |
x86: EDAC: carve out AMD MCE decoding logic
This converts the MCE decoding logic into a standalone config
option which can be built-in or a module, the first one being the
default for MCEs happening early on in the boot process.
This, beyond being separated in a cleaner way, also saves RAM by
making the decoding logic modular.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <20091002133148.GD28682@aftab>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/edac/Makefile | 5 | ||||
| -rw-r--r-- | drivers/edac/edac_mce_amd.c | 19 |
3 files changed, 32 insertions, 6 deletions
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig index 02127e59fe8e..55c9c59b3f71 100644 --- a/drivers/edac/Kconfig +++ b/drivers/edac/Kconfig @@ -47,6 +47,18 @@ config EDAC_DEBUG_VERBOSE Source file name and line number where debugging message printed will be added to debugging message. + 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 + ---help--- + Enable this option if you want to decode Machine Check Exceptions + occuring on your machine in human-readable form. + + You should definitely say Y here in case you want to decode MCEs + which occur really early upon boot, before the module infrastructure + has been initialized. + config EDAC_MM_EDAC tristate "Main Memory EDAC (Error Detection And Correction) reporting" help @@ -59,7 +71,7 @@ config EDAC_MM_EDAC config EDAC_AMD64 tristate "AMD64 (Opteron, Athlon64) K8, F10h, F11h" - depends on EDAC_MM_EDAC && K8_NB && X86_64 && PCI && CPU_SUP_AMD + depends on EDAC_MM_EDAC && K8_NB && X86_64 && PCI && EDAC_DECODE_MCE help Support for error detection and correction on the AMD 64 Families of Memory Controllers (K8, F10h and F11h) diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile index 8701cd7ce4e3..bc5dc232a0fb 100644 --- a/drivers/edac/Makefile +++ b/drivers/edac/Makefile @@ -6,7 +6,6 @@ # GNU General Public License. # - obj-$(CONFIG_EDAC) := edac_stub.o obj-$(CONFIG_EDAC_MM_EDAC) += edac_core.o @@ -17,9 +16,7 @@ ifdef CONFIG_PCI edac_core-objs += edac_pci.o edac_pci_sysfs.o endif -ifdef CONFIG_CPU_SUP_AMD -obj-$(CONFIG_X86_MCE) += edac_mce_amd.o -endif +obj-$(CONFIG_EDAC_DECODE_MCE) += edac_mce_amd.o obj-$(CONFIG_EDAC_AMD76X) += amd76x_edac.o obj-$(CONFIG_EDAC_CPC925) += cpc925_edac.o diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c index 83a01a1187d7..713ed7d37247 100644 --- a/drivers/edac/edac_mce_amd.c +++ b/drivers/edac/edac_mce_amd.c @@ -3,6 +3,7 @@ static bool report_gart_errors; static void (*nb_bus_decoder)(int node_id, struct err_regs *regs); +static void (*orig_mce_callback)(struct mce *m); void amd_report_gart_errors(bool v) { @@ -427,9 +428,25 @@ static int __init mce_amd_init(void) * We can decode MCEs for Opteron and later CPUs: */ if ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) && - (boot_cpu_data.x86 >= 0xf)) + (boot_cpu_data.x86 >= 0xf)) { + /* safe the default decode mce callback */ + orig_mce_callback = x86_mce_decode_callback; + x86_mce_decode_callback = amd_decode_mce; + } return 0; } early_initcall(mce_amd_init); + +#ifdef MODULE +static void __exit mce_amd_exit(void) +{ + x86_mce_decode_callback = orig_mce_callback; +} + +MODULE_DESCRIPTION("AMD MCE decoder"); +MODULE_ALIAS("edac-mce-amd"); +MODULE_LICENSE("GPL"); +module_exit(mce_amd_exit); +#endif |