lib/Kconfig.debug: document panic= command line option and procfs entry for PANIC_TIMEOUT

PANIC_TIMEOUT can also be controlled with the panic= kernel command line
option and the file /proc/sys/kernel/panic.  Let's document both of these
in the Kconfig help text.

Link: https://lkml.kernel.org/r/20240607152443.925168-1-bmasney@redhat.com
Signed-off-by: Brian Masney <bmasney@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 59b6765d86b8fc6a5f8c55b6daaae545c1c14f7f..86c24d9ed376377b26a615097ec6e7cb024d914c 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1043,7 +1043,9 @@ config PANIC_TIMEOUT
          Set the timeout value (in seconds) until a reboot occurs when
          the kernel panics. If n = 0, then we wait forever. A timeout
          value n > 0 will wait n seconds before rebooting, while a timeout
-         value n < 0 will reboot immediately.
+         value n < 0 will reboot immediately. This setting can be overridden
+         with the kernel command line option panic=, and from userspace via
+         /proc/sys/kernel/panic.
 
 config LOCKUP_DETECTOR
        bool