drivers/edac: add new nmi rescan

Provides a way for NMI reported errors on x86 to notify the EDAC
subsystem pending ECC errors by writing to a software state variable.

Here's the reworked patch. I added an EDAC stub to the kernel so we can
have variables that are in the kernel even if EDAC is a module. I also
implemented the idea of using the chip driver to select error detection
mode via module parameter and eliminate the kernel compile option.
Please review/test. Thx!

Also, I only made changes to some of the chipset drivers since I am
unfamiliar with the other ones. We can add similar changes as we go.

Signed-off-by: Dave Jiang <djiang@mvista.com>
Signed-off-by: Douglas Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 11 deletions

diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index e8c4a2bedaa1..3cfd9065a9b4 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -109,15 +109,4 @@ config EDAC_I5000
           Support for error detection and correction the Intel
           Greekcreek/Blackford chipsets.
 
-choice
-        prompt "Error detecting method"
-        default EDAC_POLL
-
-config EDAC_POLL
-        bool "Poll for errors"
-        help
-          Poll the chipset periodically to detect errors.
-
-endchoice
-
 endif # EDAC