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>
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index eae1ca1..81a28d6 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -27,6 +27,7 @@
#include <linux/list.h>
#include <linux/sysdev.h>
#include <linux/ctype.h>
+#include <linux/edac.h>
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/edac.h>
@@ -241,6 +242,7 @@
}
list_add_tail_rcu(&mci->link, insert_before);
+ atomic_inc(&edac_handlers);
return 0;
fail0:
@@ -267,6 +269,7 @@
static void del_mc_from_global_list(struct mem_ctl_info *mci)
{
+ atomic_dec(&edac_handlers);
list_del_rcu(&mci->link);
init_completion(&mci->complete);
call_rcu(&mci->rcu, complete_mc_list_del);