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authorDon Zickus <dzickus@redhat.com>2006-09-26 04:52:27 -0400
committerAndi Kleen <andi@basil.nowhere.org>2006-09-26 04:52:27 -0400
commit8da5adda91df3d2fcc5300e68da491694c9af019 (patch)
treebae152dabd728ba2f7fead421276e3cc9a779141 /kernel/sysctl.c
parente33e89ab1a8d295de0500b697f4f31c3ceee9aa2 (diff)
[PATCH] x86: Allow users to force a panic on NMI
To quote Alan Cox: The default Linux behaviour on an NMI of either memory or unknown is to continue operation. For many environments such as scientific computing it is preferable that the box is taken out and the error dealt with than an uncorrected parity/ECC error get propogated. A small number of systems do generate NMI's for bizarre random reasons such as power management so the default is unchanged. In other respects the new proc/sys entry works like the existing panic controls already in that directory. This is separate to the edac support - EDAC allows supported chipsets to handle ECC errors well, this change allows unsupported cases to at least panic rather than cause problems further down the line. Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 040de6bd74dd..220e20564124 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -642,6 +642,14 @@ static ctl_table kern_table[] = {
642#endif 642#endif
643#if defined(CONFIG_X86) 643#if defined(CONFIG_X86)
644 { 644 {
645 .ctl_name = KERN_PANIC_ON_NMI,
646 .procname = "panic_on_unrecovered_nmi",
647 .data = &panic_on_unrecovered_nmi,
648 .maxlen = sizeof(int),
649 .mode = 0644,
650 .proc_handler = &proc_dointvec,
651 },
652 {
645 .ctl_name = KERN_BOOTLOADER_TYPE, 653 .ctl_name = KERN_BOOTLOADER_TYPE,
646 .procname = "bootloader_type", 654 .procname = "bootloader_type",
647 .data = &bootloader_type, 655 .data = &bootloader_type,