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[Bug 748113] Re: [latencytop Not tainted kernel] xorg latency

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: Fabio Marconi <marconifabio@xxxxxxxxxxxxx>
Date: Sun, 03 Apr 2011 17:09:40 -0000
Reply-to: Bug 748113 <748113@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

possible irq lock inversion dependency detected
Apr  3 10:12:07 moka kernel: [   10.639975] modprobe/1041 just changed the state of lock:
Apr  3 10:12:07 moka kernel: [   10.639977]  (&(&dev_priv->context_switch_lock)->rlock){-.....}, at: [<ffffffffa031e3df>] nouveau_irq_handler+0x5f/0x130 [nouveau]
Apr  3 10:12:07 moka kernel: [   10.639993] but this lock took another, HARDIRQ-unsafe lock in the past:
Apr  3 10:12:07 moka kernel: [   10.639994]  (&(&dev_priv->ramin_lock)->rlock){+.+...}
Apr  3 10:12:07 moka kernel: [   10.639997] 
Apr  3 10:12:07 moka kernel: [   10.639997] and interrupts could create inverse lock ordering between them.

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https://bugs.launchpad.net/bugs/748113

Title:
  [latencytop Not tainted kernel] xorg latency