From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Oleg Nesterov <oleg@tv-sign.ru>,
Steven Rostedt <rostedt@goodmis.org>, Paul Jackson <pj@sgi.com>,
Max Krasnyanskiy <maxk@qualcomm.com>,
linux-kernel@vger.kernel.org,
David Rientjes <rientjes@google.com>
Subject: Re: [RFC/PATCH] cpuset: cpuset irq affinities
Date: Fri, 29 Feb 2008 20:02:23 +0100 [thread overview]
Message-ID: <20080229190223.GA17820@elte.hu> (raw)
In-Reply-To: <1204311351.6243.130.camel@lappy>
* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> @@ -174,11 +174,20 @@ struct irq_desc {
> #ifdef CONFIG_PROC_FS
> struct proc_dir_entry *dir;
> #endif
> +#ifdef CONFIG_CPUSETS
> + struct cpuset *cs;
> +#endif
i like this approach - it makes irqs more resource-alike and attaches
them to a specific resource control group.
So if /cgroup/boot is changed to have less CPUs then the "default" irqs
move along with it.
but if an isolated RT domain has specific irqs attached to it (say the
IRQ of some high-speed data capture device), then the irqs would move
together with that domain.
irqs are no longer a bolted-upon concept, but more explicitly managed.
[ If you boot-test it and if Paul agrees with the general approach then
i could even apply it to sched-devel.git ;-) ]
Ingo
next prev parent reply other threads:[~2008-02-29 19:02 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-27 22:21 [RFC/PATCH 0/4] CPUSET driven CPU isolation Peter Zijlstra
2008-02-27 22:21 ` [RFC/PATCH 1/4] sched: remove isolcpus Peter Zijlstra
2008-02-27 23:57 ` Max Krasnyanskiy
2008-02-28 10:19 ` Peter Zijlstra
2008-02-28 19:36 ` Max Krasnyansky
2008-02-27 22:21 ` [RFC/PATCH 2/4] cpuset: system sets Peter Zijlstra
2008-02-27 23:39 ` Paul Jackson
2008-02-28 1:53 ` Max Krasnyanskiy
2008-02-27 23:52 ` Max Krasnyanskiy
2008-02-28 0:11 ` Paul Jackson
2008-02-28 0:29 ` Steven Rostedt
2008-02-28 1:45 ` Max Krasnyanskiy
2008-02-28 3:41 ` Steven Rostedt
2008-02-28 4:58 ` Max Krasnyansky
2008-02-27 22:21 ` [RFC/PATCH 3/4] genirq: system set irq affinities Peter Zijlstra
2008-02-28 0:10 ` Max Krasnyanskiy
2008-02-28 10:19 ` Peter Zijlstra
2008-02-27 22:21 ` [RFC/PATCH 4/4] kthread: system set kthread affinities Peter Zijlstra
2008-02-27 23:38 ` [RFC/PATCH 0/4] CPUSET driven CPU isolation Max Krasnyanskiy
2008-02-28 10:19 ` Peter Zijlstra
2008-02-28 17:33 ` Max Krasnyanskiy
2008-02-28 7:50 ` Ingo Molnar
2008-02-28 8:08 ` Paul Jackson
2008-02-28 9:08 ` Ingo Molnar
2008-02-28 9:17 ` Paul Jackson
2008-02-28 9:32 ` David Rientjes
2008-02-28 10:12 ` David Rientjes
2008-02-28 10:26 ` Peter Zijlstra
2008-02-28 17:37 ` Paul Jackson
2008-02-28 21:24 ` David Rientjes
2008-02-28 22:46 ` Paul Jackson
2008-02-28 23:00 ` David Rientjes
2008-02-29 0:16 ` Paul Jackson
2008-02-29 1:05 ` David Rientjes
2008-02-29 3:34 ` Paul Jackson
2008-02-29 4:00 ` David Rientjes
2008-02-29 6:53 ` Paul Jackson
2008-02-28 10:46 ` Ingo Molnar
2008-02-28 17:47 ` Paul Jackson
2008-02-28 20:11 ` Max Krasnyansky
2008-02-28 20:13 ` Paul Jackson
2008-02-28 20:26 ` Max Krasnyansky
2008-02-28 20:27 ` Paul Jackson
2008-02-28 20:45 ` Max Krasnyansky
2008-02-28 20:23 ` Max Krasnyansky
2008-02-28 17:48 ` Max Krasnyanskiy
2008-02-29 8:31 ` Andrew Morton
2008-02-29 8:36 ` Andrew Morton
2008-02-29 9:10 ` Ingo Molnar
2008-02-29 18:06 ` Max Krasnyanskiy
2008-02-28 12:12 ` Mark Hounschell
2008-02-28 19:57 ` Max Krasnyansky
2008-02-29 18:55 ` [RFC/PATCH] cpuset: cpuset irq affinities Peter Zijlstra
2008-02-29 19:02 ` Ingo Molnar [this message]
2008-02-29 20:52 ` Max Krasnyanskiy
2008-02-29 21:03 ` Peter Zijlstra
2008-02-29 21:20 ` Max Krasnyanskiy
2008-03-03 11:57 ` Peter Zijlstra
2008-03-03 17:36 ` Paul Jackson
2008-03-03 17:57 ` Peter Zijlstra
2008-03-03 18:10 ` Paul Jackson
2008-03-03 18:18 ` Peter Zijlstra
2008-03-04 7:35 ` Paul Jackson
2008-03-04 11:06 ` Peter Zijlstra
2008-03-04 19:52 ` Max Krasnyanskiy
2008-03-05 1:11 ` Paul Jackson
2008-03-05 8:37 ` Peter Zijlstra
2008-03-05 8:50 ` Ingo Molnar
2008-03-05 12:35 ` Paul Jackson
2008-03-05 12:43 ` Ingo Molnar
2008-03-05 17:44 ` Paul Jackson
2008-03-05 19:17 ` Max Krasnyansky
2008-03-06 13:47 ` Paul Jackson
2008-03-06 15:21 ` Peter Zijlstra
2008-03-07 3:40 ` Paul Jackson
2008-03-07 6:39 ` Paul Jackson
2008-03-07 8:47 ` Paul Menage
2008-03-07 14:57 ` Paul Jackson
2008-03-03 18:41 ` Paul Menage
2008-03-03 18:52 ` Paul Jackson
2008-03-04 5:26 ` Paul Menage
2008-03-04 6:15 ` Paul Jackson
2008-03-04 6:21 ` Paul Menage
2008-03-04 6:26 ` Paul Jackson
2008-03-04 6:34 ` Paul Menage
2008-03-04 6:51 ` Paul Jackson
2008-02-29 20:55 ` Paul Jackson
2008-02-29 21:14 ` Peter Zijlstra
2008-02-29 21:29 ` Ingo Molnar
2008-02-29 21:32 ` Ingo Molnar
2008-02-29 21:42 ` Max Krasnyanskiy
2008-02-29 22:00 ` Paul Jackson
2008-02-29 21:53 ` Paul Jackson
2008-03-02 5:18 ` Christoph Hellwig
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