Messages in this thread | | | Date | Thu, 22 Jun 2006 09:33:05 -0400 (EDT) | From | Steven Rostedt <> | Subject | Re: Why can't I set the priority of softirq-hrt? (Re: 2.6.17-rt1) |
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On Thu, 22 Jun 2006, Thomas Gleixner wrote:
> On Thu, 2006-06-22 at 00:35 +0100, Esben Nielsen wrote: > > On Wed, 21 Jun 2006, Thomas Gleixner wrote: > > > > > On Wed, 2006-06-21 at 22:29 +0100, Esben Nielsen wrote: > > >>> Find an version against the code in -mm below. Not too much tested yet. > > >> > > >> What if setscheduler is called from interrup context as in the hrt timers? > > > > > > It simply gets stuff going, nothing else. > > > > > What I mean is that we will then do the full priority inheritance boost > > with interrupts off. > > Only in the case when its called from IRQ context. >
Uh, Thomas, we can't call rt_mutex_adjust_prio_chain from interrupt context. It grabs the wait_lock, which is documented not to be called by interrupts. So this can easily deadlock the system.
-- Steve
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