watchdog: Add comments to explain the watchdog_disabled variable
authoranish kumar <anish198519851985@gmail.com>
Tue, 12 Mar 2013 18:44:08 +0000 (14:44 -0400)
committerIngo Molnar <mingo@kernel.org>
Thu, 14 Mar 2013 07:24:05 +0000 (08:24 +0100)
commitb66a2356d7108a15b8b5c9b8e6213e05ead22cd6
tree58a9d7b52c49787fb075a0ed3b4216a6cfe60d2e
parent877c685607925238e302cd3aa38788dca6c1b226
watchdog: Add comments to explain the watchdog_disabled variable

The watchdog_disabled flag is a bit cryptic. However it's
usefulness is multifold. Uses are:

 1. Check if smpboot_register_percpu_thread function passed.

 2. Makes sure that user enables and disables the watchdog in
    sequence i.e. enable watchdog->disable watchdog->enable watchdog
    Unlike enable watchdog->enable watchdog which is wrong.

Signed-off-by: anish kumar <anish198519851985@gmail.com>
[small text cleanups]
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: chuansheng.liu@intel.com
Cc: paulmck@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1363113848-18344-1-git-send-email-dzickus@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
kernel/watchdog.c