linux-kernel - Re: [RFC][PATCH 15/22] sched: add traceporints for -deadline tasks

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Message-ID: <1289578409.6525.533.camel@Palantir>
Date:	Fri, 12 Nov 2010 17:13:29 +0100
From:	Raistlin <raistlin@...ux.it>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Chris Friesen <cfriesen@...tel.com>, oleg@...hat.com,
	Frederic Weisbecker <fweisbec@...il.com>,
	Darren Hart <darren@...art.com>,
	Johan Eker <johan.eker@...csson.com>,
	"p.faure" <p.faure@...tech.ch>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Claudio Scordino <claudio@...dence.eu.com>,
	michael trimarchi <trimarchi@...is.sssup.it>,
	Fabio Checconi <fabio@...dalf.sssup.it>,
	Tommaso Cucinotta <cucinotta@...up.it>,
	Juri Lelli <juri.lelli@...il.com>,
	Nicola Manica <nicola.manica@...i.unitn.it>,
	Luca Abeni <luca.abeni@...tn.it>,
	Dhaval Giani <dhaval@...is.sssup.it>,
	Harald Gustafsson <hgu1972@...il.com>,
	paulmck <paulmck@...ux.vnet.ibm.com>
Subject: Re: [RFC][PATCH 15/22] sched: add traceporints for -deadline tasks

On Thu, 2010-11-11 at 20:54 +0100, Peter Zijlstra wrote:
> On Fri, 2010-10-29 at 08:38 +0200, Raistlin wrote:
> > Add tracepoints for the most notable events related to -deadline
> > tasks scheduling (new task arrival, context switch, runtime accounting,
> > bandwidth enforcement timer, etc.).
> >
> We've already got sched_switch(), better extend that. Same for the next
> patch, we already have a migration tracepoint, extend that.
> 
> And I recently rejected a fifo push/pull tracepoint patch from Steve
> because the migration tracepoint was able to provide the same
> information.
> 
Perfectly fine. I'll see how do that without spamming too much the trace
with data that are meaningless for non-deadline tasks.

Thanks,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
----------------------------------------------------------------------
Dario Faggioli, ReTiS Lab, Scuola Superiore Sant'Anna, Pisa  (Italy)

http://blog.linux.it/raistlin / raistlin@...ga.net /
dario.faggioli@...ber.org

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