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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 /include/linux
parent28f96eeafc89643d411d54c258788a8573576127 (diff)
downloadop-kernel-dev-c0d121720220584bba2876b032e58a076b843fa1.zip
op-kernel-dev-c0d121720220584bba2876b032e58a076b843fa1.tar.gz
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 'include/linux')
-rw-r--r--include/linux/edac.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/edac.h b/include/linux/edac.h
new file mode 100644
index 0000000..c8b92d7
--- /dev/null
+++ b/include/linux/edac.h
@@ -0,0 +1,29 @@
+/*
+ * Generic EDAC defs
+ *
+ * Author: Dave Jiang <djiang@mvista.com>
+ *
+ * 2006-2007 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ */
+#ifndef _LINUX_EDAC_H_
+#define _LINUX_EDAC_H_
+
+#include <asm/atomic.h>
+
+#define EDAC_OPSTATE_INVAL -1
+#define EDAC_OPSTATE_POLL 0
+#define EDAC_OPSTATE_NMI 1
+#define EDAC_OPSTATE_INT 2
+
+extern int edac_op_state;
+extern atomic_t edac_handlers;
+extern atomic_t edac_err_assert;
+
+extern int edac_handler_set(void);
+extern void edac_atomic_assert_error(void);
+
+#endif
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