On 13-11-22 11:08 AM, Peter Zijlstra wrote:
> On Fri, Nov 22, 2013 at 02:59:31PM +0100, Sebastian Andrzej Siewior wrote:
>> +extern void __lockfunc rt_spin_try_unlock(spinlock_t *lock);
>
> I know what you mean, but.. try_unlock() just sounds wrong, how can we
> attempt but fail to unlock a lock w
On 11/22/2013 05:21 PM, Sebastian Andrzej Siewior wrote:
> On 11/22/2013 05:08 PM, Peter Zijlstra wrote:
>> On Fri, Nov 22, 2013 at 02:59:31PM +0100, Sebastian Andrzej Siewior wrote:
>>> +extern void __lockfunc rt_spin_try_unlock(spinlock_t *lock);
>>
>> I know what you mean, but.. try_unlock() jus
On 11/22/2013 05:08 PM, Peter Zijlstra wrote:
> On Fri, Nov 22, 2013 at 02:59:31PM +0100, Sebastian Andrzej Siewior wrote:
>> +extern void __lockfunc rt_spin_try_unlock(spinlock_t *lock);
>
> I know what you mean, but.. try_unlock() just sounds wrong, how can we
> attempt but fail to unlock a lock
On Fri, Nov 22, 2013 at 02:59:31PM +0100, Sebastian Andrzej Siewior wrote:
> +extern void __lockfunc rt_spin_try_unlock(spinlock_t *lock);
I know what you mean, but.. try_unlock() just sounds wrong, how can we
attempt but fail to unlock a lock we hold ;-)
/me crawls back under his rock ;-)
--
To
* Peter Zijlstra | 2013-11-18 15:10:21 [+0100]:
>Its get_next_timer_interrupt() that does a trylock() and only for
>PREEMPT_RT_FULL.
>
>Also; on IRC you said:
>
> " I'm currently not sure if we should do
>the _irq() lock or a trylock for the wait_lock in
>rt_mutex_slowtrylock()"
>
>Which I misrea
On Tue, Nov 19, 2013 at 12:59:59AM +0100, Frederic Weisbecker wrote:
> On Mon, Nov 18, 2013 at 03:10:21PM +0100, Peter Zijlstra wrote:
> > --- a/kernel/softirq.c
> > +++ b/kernel/softirq.c
> > @@ -746,13 +746,23 @@ void irq_exit(void)
> > #endif
> >
> > account_irq_exit_time(current);
> > -
On Mon, Nov 18, 2013 at 03:10:21PM +0100, Peter Zijlstra wrote:
> --- a/kernel/softirq.c
> +++ b/kernel/softirq.c
> @@ -746,13 +746,23 @@ void irq_exit(void)
> #endif
>
> account_irq_exit_time(current);
> - trace_hardirq_exit();
> sub_preempt_count(HARDIRQ_OFFSET);
> - if (!i
On Mon, Nov 18, 2013 at 03:10:21PM +0100, Peter Zijlstra wrote:
> --- a/kernel/softirq.c
> +++ b/kernel/softirq.c
> @@ -746,13 +746,23 @@ void irq_exit(void)
> #endif
>
> account_irq_exit_time(current);
> - trace_hardirq_exit();
> sub_preempt_count(HARDIRQ_OFFSET);
> - if (!i
On Fri, Nov 15, 2013 at 09:14:36PM +0100, Sebastian Andrzej Siewior wrote:
> Mike Galbraith captered the following:
> | >#11 [88017b243e90] _raw_spin_lock at 815d2596
> | >#12 [88017b243e90] rt_mutex_trylock at 815d15be
> | >#13 [88017b243eb0] get_next_timer_interrupt at
Mike Galbraith captered the following:
| >#11 [88017b243e90] _raw_spin_lock at 815d2596
| >#12 [88017b243e90] rt_mutex_trylock at 815d15be
| >#13 [88017b243eb0] get_next_timer_interrupt at 81063b42
| >#14 [88017b243f00] tick_nohz_stop_sched_tick at 81
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