Messages in this thread | | | Date | Tue, 9 Jun 2009 08:32:08 +0200 | From | Ingo Molnar <> | Subject | Re: adding lockdep support to the Blackfin arch |
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* Mike Frysinger <vapier.adi@gmail.com> wrote:
> ive been extending the Blackfin arch recently to support lockdep. > since i also had to implement irqflags/stacktrace as well, i wouldnt > be surprised if this issue is nested in there, plus this is a no-mmu > system. > > at any rate, when i boot up a Blackfin system with PROVE_LOCKING > enabled, i end up with this warning: > Badness at kernel/fork.c:988 > > which correlates to this in copy_process(): > DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
This suggests that the irqflags tracking might be wrong: the fork code expects it at this point that hardirqs are enabled.
> btw, in order to get this to work in the first place, i had to > extend
[incomplete mail?]
Ingo
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