aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDaniel Walker <dwalker@mvista.com>2007-09-06 16:59:54 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-09-10 18:57:47 -0700
commitd95865480de280b892e19fe90921601876da5775 (patch)
tree31334c3c67e386949213015ff2c1f3a09c8b874b
parenta534b679180025aa324ebd63c05516e478551cfd (diff)
downloadlinux-linaro-d95865480de280b892e19fe90921601876da5775.tar.gz
i386: fix a hang on stuck nmi watchdog
In the case when an nmi gets stucks the endflag stays equal to zero. This causes the busy looping on other cpus to continue, even though the nmi test is done. On my machine with out the change below the system would hang right after check_nmi_watchdog(). The change below just sets endflag prior to checking if the test was successful or not. Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/i386/kernel/nmi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index 8c1c965eb2a..c7227e2180f 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -115,12 +115,12 @@ static int __init check_nmi_watchdog(void)
atomic_dec(&nmi_active);
}
}
+ endflag = 1;
if (!atomic_read(&nmi_active)) {
kfree(prev_nmi_count);
atomic_set(&nmi_active, -1);
return -1;
}
- endflag = 1;
printk("OK.\n");
/* now that we know it works we can reduce NMI frequency to