tree fd48a6b49acaec668f8b9dfa18c9dedc56d8a0b7
parent 8f30d411767351656ea62c9e7612120f9b870b59
author Jason Wessel <jason.wessel@windriver.com> 1332203755 -0500
committer Jason Wessel <jason.wessel@windriver.com> 1332446836 -0500

kgdb,debug_core: add the ability to control the reboot notifier

Sometimes it is desirable to stop the kernel debugger before allowing
a system to reboot either with kdb or kgdb.  This patch adds the
ability to turn the reboot notifier on and off or enter the debugger
and stop kernel execution before rebooting.

It is possible to change the setting after booting the kernel with the
following:

echo 1 > /sys/module/debug_core/parameters/kgdbreboot

It is also possible to change this setting using kdb / kgdb to
manipulate the variable directly.

Using KDB:
   mm kgdbreboot 1

Using gdb:
   set kgdbreboot=1

Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>