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| author |   Bernhard Walle <bwalle@suse.de> | 2008-10-07 13:21:56 +0200 |
|---|---|---|
| committer |   Jonathan Corbet <corbet@lwn.net> | 2008-10-16 12:30:06 -0600 |
| commit | 656e6c0050fd63ce42c55a6cb454a9b4b2f9ccf7 (patch) | |
| tree | 08b5af8a3337c1e33333485b589ba34c90c67275 | |
| parent | Add a reference to paper to SubmittingPatches (diff) | |
| download | linux-dev-656e6c0050fd63ce42c55a6cb454a9b4b2f9ccf7.tar.xz linux-dev-656e6c0050fd63ce42c55a6cb454a9b4b2f9ccf7.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: Jonathan Corbet <corbet@lwn.net>
| -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 f566ad9bcb7b..d2f77d959561 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -1322,6 +1322,18 @@ 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 ------------ |