From: Arjan van de Ven <arjan@infradead.org>
To: Greg KH <greg@kroah.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@osdl.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Steven Rostedt <rostedt@goodmis.org>,
Jon Masters <jonathan@jonmasters.org>,
Sven Dietrich <sdietrich@suse.de>
Subject: Re: [RFC patch 0/5] genirq: add infrastructure for threaded interrupt handlers
Date: Thu, 2 Oct 2008 15:33:05 -0700 [thread overview]
Message-ID: <20081002153305.057cf6d9@infradead.org> (raw)
In-Reply-To: <20081002213146.GA9201@kroah.com>
On Thu, 2 Oct 2008 14:31:46 -0700
Greg KH <greg@kroah.com> wrote:
> On Thu, Oct 02, 2008 at 04:46:09PM +0200, Andi Kleen wrote:
> > Thomas Gleixner <tglx@linutronix.de> writes:
> > >
> > > - move long running handlers out of the hard interrupt context
> >
> > I'm not sure I'm really looking forward to this brave new world
> > of very long running interrupt handlers. e.g. what do you
> > do for example when some handler blocks for a very long time?
>
> We have this issue today with some irqs (USB is known for issue
> here...)
>
> So I don't think this is a big issue, and in the end, a better idea as
> it might force us to confront some of the big abusers and fix them.
>
one of the things irq threads gives you is that 'top' will show you
which ones are eating cpu ;-)
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2008-10-02 22:33 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-01 23:02 [RFC patch 0/5] genirq: add infrastructure for threaded interrupt handlers Thomas Gleixner
2008-10-01 23:02 ` [RFC patch 1/5] genirq: make irqreturn_t an enum Thomas Gleixner
2008-10-01 23:02 ` [RFC patch 2/5] genirq: add a quick check handler Thomas Gleixner
2008-10-02 0:47 ` Jon Masters
2008-10-02 5:09 ` Steven Rostedt
2008-10-02 10:51 ` Jon Masters
2008-10-02 22:06 ` Greg KH
2008-10-02 4:52 ` Steven Rostedt
2008-10-03 8:29 ` Christoph Hellwig
2008-10-03 10:37 ` Thomas Gleixner
2008-10-01 23:02 ` [RFC patch 3/5] genirq: add threaded interrupt handler support Thomas Gleixner
2008-10-02 5:01 ` Steven Rostedt
2008-10-01 23:02 ` [RFC patch 4/5] genirq: add a helper to check whether the irq thread should run Thomas Gleixner
2008-10-01 23:02 ` [RFC patch 5/5] genirq: make irq threading robust Thomas Gleixner
2008-10-02 0:52 ` Jon Masters
2008-10-02 5:20 ` Steven Rostedt
2008-10-01 23:23 ` [RFC patch 0/5] genirq: add infrastructure for threaded interrupt handlers Andrew Morton
2008-10-01 23:29 ` Arjan van de Ven
2008-10-01 23:40 ` Andrew Morton
2008-10-01 23:58 ` Thomas Gleixner
2008-10-02 0:40 ` Jon Masters
2008-10-02 22:07 ` Greg KH
2008-10-08 22:18 ` Ingo Oeser
2008-10-02 1:53 ` Daniel Walker
2008-10-02 15:02 ` Steven Rostedt
2008-10-02 15:48 ` Daniel Walker
2008-10-02 18:42 ` Thomas Gleixner
2008-10-02 19:04 ` Daniel Walker
2008-10-02 19:23 ` Steven Rostedt
2008-10-02 19:28 ` Ingo Molnar
2008-10-02 20:09 ` Daniel Walker
2008-10-02 20:14 ` Steven Rostedt
2008-10-02 20:48 ` Daniel Walker
2008-10-02 21:05 ` Steven Rostedt
2008-10-02 21:30 ` Daniel Walker
2008-10-02 22:28 ` Steven Rostedt
2008-10-02 23:24 ` Daniel Walker
2008-10-03 0:26 ` Thomas Gleixner
2008-10-03 14:44 ` Daniel Walker
2008-10-02 14:46 ` Andi Kleen
2008-10-02 21:31 ` Greg KH
2008-10-02 22:33 ` Arjan van de Ven [this message]
2008-10-03 3:25 ` Andi Kleen
2008-10-03 3:48 ` Arjan van de Ven
2008-10-03 4:35 ` Andi Kleen
2008-10-03 3:23 ` Andi Kleen
2008-10-21 1:32 ` [RFC patch] genirq threading for ehci, ohci and uhci USB hosts Sven-Thorsten Dietrich
2008-10-21 1:32 ` Sven-Thorsten Dietrich
2008-10-21 2:07 ` Jonathan Woithe
2008-10-21 10:29 ` [RFC patch] genirq threading (v2) for ehci, ohci and uhci USB hosts and ohci1394 Sven-Thorsten Dietrich
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