[PATCH] x86-64: Add command line option to set machine check tolerance level

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c
index 87ea8fdd43fd..a39a3edf9ed4 100644
--- a/arch/x86_64/kernel/mce.c
+++ b/arch/x86_64/kernel/mce.c
@@ -17,6 +17,7 @@
 #include <linux/fs.h>
 #include <linux/cpu.h>
 #include <linux/percpu.h>
+#include <linux/ctype.h>
 #include <asm/processor.h> 
 #include <asm/msr.h>
 #include <asm/mce.h>
@@ -489,6 +490,7 @@ static int __init mcheck_disable(char *str)
 
 /* mce=off disables machine check. Note you can reenable it later
    using sysfs.
+   mce=TOLERANCELEVEL (number, see above)
    mce=bootlog Log MCEs from before booting. Disabled by default to work
    around buggy BIOS that leave bogus MCEs.  */
 static int __init mcheck_enable(char *str)
@@ -499,6 +501,8 @@ static int __init mcheck_enable(char *str)
                 mce_dont_init = 1;
         else if (!strcmp(str, "bootlog"))
                 mce_bootlog = 1;
+        else if (isdigit(str[0]))
+                get_option(&str, &tolerant);
         else
                 printk("mce= argument %s ignored. Please use /sys", str); 
         return 0;