Re: [RFC] [Patch 4/4] lock contention tracking slimmed down

From: Martin Peschke
Date: Fri Jun 08 2007 - 13:00:32 EST

Peter Zijlstra wrote:
I'm confused as to where the class->stat objects are initialised? Is
that done in lock_stat_init()? If so, then you have a bug.

static struct lock_class lock_classes[MAX_LOCKDEP_KEYS];

I assume this gets us class structures containing all zeros, doesn't it?
Then class->stat is zeros as well, which is handled by lib/statistics.
(In this case, data gathering hasn't been turned on yet, and statistic_inc()
and similar functions don't access other areas of struct statistic.)


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