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| author | Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> | 2015-12-14 11:19:14 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-12-19 11:07:01 +0100 |
| commit | 9f318e3fcb1d4c48c26e8ca2ff2a459b82f36a23 (patch) | |
| tree | 9e55b068676f1dd21cb82666a5f767cb3fbe0411 /Documentation/sysctl/kernel.txt | |
| parent | x86/nmi: Save regs in crash dump on external NMI (diff) | |
| download | linux-9f318e3fcb1d4c48c26e8ca2ff2a459b82f36a23.tar.xz linux-9f318e3fcb1d4c48c26e8ca2ff2a459b82f36a23.zip | |
Documentation: Document kernel.panic_on_io_nmi sysctl
kernel.panic_on_io_nmi sysctl was introduced by commit
5211a242d0cb ("x86: Add sysctl to allow panic on IOCK NMI error")
but its documentation is missing. So, add it.
Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Requested-by: Borislav Petkov <bp@alien8.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: kexec@lists.infradead.org
Cc: linux-doc@vger.kernel.org
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Obergfell <uobergfe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/20151210014637.25437.71903.stgit@softrs
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation/sysctl/kernel.txt')
| -rw-r--r-- | Documentation/sysctl/kernel.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index af70d1541d3a..73c6b1ef0e84 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -551,6 +551,21 @@ the recommended setting is 60. ============================================================== +panic_on_io_nmi: + +Controls the kernel's behavior when a CPU receives an NMI caused by +an IO error. + +0: try to continue operation (default) + +1: panic immediately. The IO error triggered an NMI. This indicates a + serious system condition which could result in IO data corruption. + Rather than continuing, panicking might be a better choice. Some + servers issue this sort of NMI when the dump button is pushed, + and you can use this option to take a crash dump. + +============================================================== + panic_on_oops: Controls the kernel's behaviour when an oops or BUG is encountered. |