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authorDave Jiang <djiang@mvista.com>2007-07-19 01:49:46 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-19 10:04:53 -0700
commitc0d121720220584bba2876b032e58a076b843fa1 (patch)
tree13ba24c6d875ded1494e1560f336b8551c663ef1 /drivers/edac/edac_mc.c
parent28f96eeafc89643d411d54c258788a8573576127 (diff)
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>
Diffstat (limited to 'drivers/edac/edac_mc.c')
-rw-r--r--drivers/edac/edac_mc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index eae1ca1caebd..81a28d6662e4 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 @@ static int add_mc_to_global_list (struct mem_ctl_info *mci)
}
list_add_tail_rcu(&mci->link, insert_before);
+ atomic_inc(&edac_handlers);
return 0;
fail0:
@@ -267,6 +269,7 @@ static void complete_mc_list_del(struct rcu_head *head)
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);