Messages in this thread |  | | Date | Thu, 12 Sep 2002 22:44:25 +0200 (CEST) | From | Ingo Molnar <> | Subject | Re: [PATCH] kernel BUG at sched.c:944! only with CONFIG_PREEMPT=y] |
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On 12 Sep 2002, Robert Love wrote:
> While this sounds like a great debugging check, it is not useful in > general since we surely have some bad code that calls schedule() with > locks held. Further, since the atomic accounting only includes locks if > CONFIG_PREEMPT is set, you only see this with kernel preemption enabled.
it *is* a great debugging check, at zero added cost. Scheduling from an atomic region *is* a critical bug that can and will cause problems in 99% of the cases. Rather fix the asserts that got triggered instead of backing out useful debugging checks ...
Ingo
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