On Wed, 2006-12-20 at 14:35 +0100, Jiri Slaby wrote:
> Hi!
>
> an user still gets NMI watchdog warning, that the machine deadlocked.
have you tried enabling LOCKDEP ?
> isr() /* i.e. hardirq context */
> {
> spin_lock(&lock);
> ...
> spin_unlock(&lock);
> }
this is ok if you are 100% sure that this never gets called in any other
way
>
> timer() /* i.e. softirq context */
> {
> unsigned int f;
> spin_lock_irqsave(&lock, f) /* stack shows, that it locks here */
this is a bug, the flags are an "unsigned long" not "unsigned int"!
It may do really bad stuff!
Greetings,
Arjan van de Ven
--
if you want to mail me at work (you don't), use arjan (at) linux.intel.com
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