Re: [patch] rt: res_counter fix, v2

Peter Zijlstra
2009-02-12T14:41:54Z

On Thu, 2009-02-12 at 15:28 +0100, Frederic Weisbecker wrote:
> > [ 45.228589] hardirqs last disabled at (0): [<ffffffff8025449d>] copy_process+0x68d/0x1500
> > [ 45.228602] softirqs last enabled at (0): [<ffffffff8025449d>] copy_process+0x68d/0x1500
>
>
> The reason for which I wanted to send an irqsoff trace is that the above lines are false.

copy_process() has:

#endif
p->hardirq_enable_ip = 0;
p->hardirq_enable_event = 0;
p->hardirq_disable_ip = _THIS_IP_;
p->hardirq_disable_event = 0;
p->softirqs_enabled = 1;
p->softirq_enable_ip = _THIS_IP_;
p->softirq_enable_event = 0;
p->softirq_disable_ip = 0;
p->softirq_disable_event = 0;
p->hardirq_context = 0;
p->softirq_context = 0;
#endif

the sequence count of 0 basically tells you it hasn't been set yet.