From: Arjan van de Ven <arjan@linux.intel.com>
Date: Fri, 15 Aug 2008 22:29:38 +0000 (-0700)
Subject: debug: add notifier chain debugging
X-Git-Tag: v2.6.29-rc1~572^2~4^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b2439dbb703ae8d95a9ce7ece6b7800b80f41f0;p=pandora-kernel.git

debug: add notifier chain debugging

during some development we suspected a case where we left something
in a notifier chain that was from a module that was unloaded already...
and that sort of thing is rather hard to track down.

This patch adds a very simple sanity check (which isn't all that
expensive) to make sure the notifier we're about to call is
actually from either the kernel itself of from a still-loaded
module, avoiding a hard-to-chase-down crash.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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