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authorJohannes Berg <johannes@sipsolutions.net>2008-01-16 09:51:58 +0100
committerPeter Zijlstra <a.p.zijlstra@chello.nl>2008-01-16 09:51:58 +0100
commiteb13ba873881abd5e15af784756a61af635e665e (patch)
tree228bf4afa2c4418ad09cd50b3ebb762f793ed84a /arch/x86
parent5a26db5bd25cf4bf32ae9fa9f6136b6b6d5b45c5 (diff)
lockdep: fix workqueue creation API lockdep interaction
Dave Young reported warnings from lockdep that the workqueue API can sometimes try to register lockdep classes with the same key but different names. This is not permitted in lockdep. Unfortunately, I was unaware of that restriction when I wrote the code to debug workqueue problems with lockdep and used the workqueue name as the lockdep class name. This can obviously lead to the problem if the workqueue name is dynamic. This patch solves the problem by always using a constant name for the workqueue's lockdep class, namely either the constant name that was passed in or a string consisting of the variable name. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Diffstat (limited to 'arch/x86')
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