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| author | Bernhard Walle <bwalle@suse.de> | 2008-10-15 22:02:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-16 11:21:32 -0700 |
| commit | 22b8ab66deb2600f93d24d30df17b9d9e5273d05 (patch) | |
| tree | 3b0202b79549e6dff0369b295af22b577b2d6a9c | |
| parent | 6d5cd6effed5f8c958a6c0df56da336f5a4fdb8a (diff) | |
| download | linux-22b8ab66deb2600f93d24d30df17b9d9e5273d05.tar.gz linux-22b8ab66deb2600f93d24d30df17b9d9e5273d05.tar.bz2 linux-22b8ab66deb2600f93d24d30df17b9d9e5273d05.zip | |
Document panic_on_unrecovered_nmi sysctl
This adds "panic_on_unrecovered_nmi" sysctl to
Documentation/filesystems/proc.txt. The text is mainly taken from
http://readlist.com/lists/vger.kernel.org/linux-kernel/43/217998.html.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | Documentation/filesystems/proc.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index b488edad743c..c032bf39e8b9 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -1321,6 +1321,18 @@ debugging information is displayed on console. NMI switch that most IA32 servers have fires unknown NMI up, for example. If a system hangs up, try pressing the NMI switch. +panic_on_unrecovered_nmi +------------------------ + +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 off. That sysctl works like the existing +panic controls already in that directory. + nmi_watchdog ------------ |