Messages in this thread Patch in this message | | | From | Stephen Kitt <> | Subject | [PATCH v2 6/8] docs: document panic fully in sysctl/kernel.rst | Date | Tue, 18 Feb 2020 13:59:21 +0100 |
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The description of panic doesn’t cover all the supported scenarios; this patch fixes that, describing the three possibilities (no reboot, immediate reboot, reboot after a delay).
Based on the implementation in kernel/panic.c.
Signed-off-by: Stephen Kitt <steve@sk2.org> --- Documentation/admin-guide/sysctl/kernel.rst | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 795d8e695f50..a67c218c4066 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -558,9 +558,15 @@ The default is 65534. panic ===== -The value in this file represents the number of seconds the kernel -waits before rebooting on a panic. When you use the software watchdog, -the recommended setting is 60. +The value in this file determines the behaviour of the kernel on a +panic: + +* if zero, the kernel will loop forever; +* if negative, the kernel will reboot immediately; +* if positive, the kernel will reboot after the corresponding number + of seconds. + +When you use the software watchdog, the recommended setting is 60. panic_on_io_nmi -- 2.20.1
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