From: Steven Rostedt <rostedt@goodmis.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RT] possible bug in trace_start_sched_wakeup
Date: Fri, 27 Jan 2006 07:46:18 -0500 [thread overview]
Message-ID: <1138365978.8988.1.camel@localhost.localdomain> (raw)
In-Reply-To: <20060127094656.GA24878@elte.hu>
On Fri, 2006-01-27 at 10:46 +0100, Ingo Molnar wrote:
> * Steven Rostedt <rostedt@goodmis.org> wrote:
>
> > spin_lock(&sch.trace_lock);
> > - if (sch.task && (sch.task->prio >= p->prio))
> > + if (sch.task && ((sch.task->prio <= p->prio) || !rt_task(p)))
> > goto out_unlock;
>
> good catch - but i'd not do the !rt_task(p) condition, because e.g. PI
> related priority boosting works _without_ changing p->policy. So it is
> p->prio that controls. I.e. a simple "sch.task->prio <= p->prio" should
> be enough.
Ah, I don't know what I was thinking about the rt_task part (I was
working on very little sleep). You're right. Nuke it!
Thanks,
-- Steve
next prev parent reply other threads:[~2006-01-27 12:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-27 1:57 [RT] possible bug in trace_start_sched_wakeup Steven Rostedt
2006-01-27 4:38 ` Steven Rostedt
2006-01-27 9:46 ` Ingo Molnar
2006-01-27 12:46 ` Steven Rostedt [this message]
2006-01-27 9:54 ` Ingo Molnar
2006-01-27 12:47 ` Steven Rostedt
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