watchdog: Improve initialisation error message and documentation
authorBen Hutchings <ben@decadent.org.uk>
Sun, 2 Jan 2011 23:02:42 +0000 (23:02 +0000)
committerIngo Molnar <mingo@elte.hu>
Mon, 3 Jan 2011 04:25:52 +0000 (05:25 +0100)
commit551423748a4eba55f2eb0fc250d757986471f187
tree401f03f7e5a70de089ef83153ac98096929c6f09
parentb518a64983cbf2ff31aed530898de2d80e4573d5
watchdog: Improve initialisation error message and documentation

The error message 'NMI watchdog failed to create perf event...'
does not make it clear that this is a fatal error for the
watchdog.  It also currently prints the error value as a
pointer, rather than extracting the error code with PTR_ERR().
Fix that.

Add a note to the description of the 'nowatchdog' kernel
parameter to associate it with this message.

Reported-by: Cesare Leonardi <celeonar@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: 599368@bugs.debian.org
Cc: 608138@bugs.debian.org
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: <stable@kernel.org> # .37.x and later
LKML-Reference: <1294009362.3167.126.camel@localhost>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Documentation/kernel-parameters.txt
kernel/watchdog.c