From: Peter Zijlstra <peterz@infradead.org>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Arjan van de Ven <arjan@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, mingo@elte.hu,
jonathan@jonmasters.org
Subject: Re: [patch 4/4] genirq: add support for threaded interrupt handlers
Date: Mon, 02 Mar 2009 14:21:48 +0100 [thread overview]
Message-ID: <1236000108.5330.384.camel@laptop> (raw)
In-Reply-To: <49A94032.9010105@s5r6.in-berlin.de>
On Sat, 2009-02-28 at 14:46 +0100, Stefan Richter wrote:
> > We also tried to bind the IRQ thread to the CPU if it were to run a
> > softirq. But that too had issues. If the IRQ thread was bound to a CPU and
> > a higher priority process preempted it, that IRQ handler could not migrate
> > to another CPU to finish the work. Now the IRQ handler would need to wait
> > for that high priority process to give up the CPU in order to continue.
> >
> > The solution is to redesign the softirq code to handle migration.
>
> Do you mean "redesign the softirq framework" or "redesign the softirq
> framework users"?
>
> (In the particular case of firewire, the latter should be just fine.)
The latter.
next prev parent reply other threads:[~2009-03-02 13:22 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-26 13:28 [patch 0/4] genirq: add infrastructure for threaded interrupt handlers V2 Thomas Gleixner
2009-02-26 13:28 ` [patch 1/4] genirq: make irqreturn_t an enum Thomas Gleixner
2009-03-25 19:51 ` Geert Uytterhoeven
2009-02-26 13:28 ` [patch 2/4] genirq: use kzalloc instead of explicit zero initialization Thomas Gleixner
2009-02-26 13:28 ` [patch 3/4] genirq: add a quick check handler Thomas Gleixner
2009-02-26 23:03 ` Andrew Morton
2009-02-26 23:11 ` Thomas Gleixner
2009-02-28 22:24 ` Christoph Hellwig
2009-03-01 9:44 ` Thomas Gleixner
2009-03-05 19:59 ` Sven-Thorsten Dietrich
2009-03-17 7:54 ` Christoph Hellwig
2009-03-17 15:29 ` Steven Rostedt
2009-02-26 13:28 ` [patch 4/4] genirq: add support for threaded interrupt handlers Thomas Gleixner
2009-02-26 23:32 ` Andrew Morton
2009-02-27 5:27 ` Arjan van de Ven
2009-02-27 5:45 ` Andrew Morton
2009-02-27 7:18 ` Peter Zijlstra
2009-02-27 7:48 ` Andrew Morton
2009-02-27 8:05 ` Peter Zijlstra
2009-02-27 8:15 ` Andrew Morton
2009-02-27 15:06 ` Arjan van de Ven
2009-02-27 15:30 ` Steven Rostedt
2009-02-28 13:46 ` Stefan Richter
2009-03-02 13:21 ` Peter Zijlstra [this message]
2009-02-28 17:13 ` Andi Kleen
2009-02-27 16:43 ` Thomas Gleixner
2009-02-26 15:26 ` [patch 0/4] genirq: add infrastructure for threaded interrupt handlers V2 Jon Masters
2009-03-05 20:03 ` Sven-Thorsten Dietrich
2009-02-28 22:10 ` Christoph Hellwig
2009-03-01 9:43 ` Thomas Gleixner
2009-03-05 8:40 ` [ANNOUNCE] USB genirq " Sven-Thorsten Dietrich
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1236000108.5330.384.camel@laptop \
--to=peterz@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=arjan@infradead.org \
--cc=jonathan@jonmasters.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=rostedt@goodmis.org \
--cc=stefanr@s5r6.in-berlin.de \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.