From: Daniel Walker <dwalker@mvista.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>,
Lee Revell <rlrevell@joe-job.com>,
Tim Bird <tim.bird@am.sony.com>,
linux-kernel@vger.kernel.org, bhuey@lnxw.com, tglx@linutronix.de,
karim@opersys.com, mingo@elte.hu, pmarques@grupopie.com,
bruce@andrew.cmu.edu, nickpiggin@yahoo.com.au, ak@muc.de,
sdietrich@mvista.com, hch@infradead.org, akpm@osdl.org
Subject: Re: Attempted summary of "RT patch acceptance" thread
Date: Fri, 10 Jun 2005 13:22:37 -0700 [thread overview]
Message-ID: <1118434957.27756.5.camel@dhcp153.mvista.com> (raw)
In-Reply-To: <20050610173728.GA6564@g5.random>
On Fri, 2005-06-10 at 19:37 +0200, Andrea Arcangeli wrote:
>
> preempt-RT _can_ do something about it but only _if_ people hacks the
> drivers properly and makes sure to call local_irq_save_nort instead of
> local_irq_save and other explicit changes like that, things that if
> missing are noticeable only during measurements with preempt-RT config
> option enabled (hence the metal-hard classification of preempt-RT and
> not ruby-hard definition).
This is no longer an issue. We did an interrupt disable conversion so
now there is only a few places that actually disable interrupts. It
hasn't been tested fully, but you should be able to used whatever
drivers you want and still get the same interrupt latency. However,
preempt latency is still and issue for these drivers.
Daniel
next prev parent reply other threads:[~2005-06-10 20:22 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-08 2:26 Paul E. McKenney
2005-06-08 3:00 ` Karim Yaghmour
2005-06-08 14:47 ` Paul E. McKenney
2005-06-08 16:51 ` Karim Yaghmour
2005-06-09 2:25 ` Paul E. McKenney
2005-06-09 11:20 ` Philippe Gerum
2005-06-08 18:46 ` Chris Friesen
2005-06-08 19:28 ` Paul E. McKenney
2005-06-10 22:25 ` Eric Piel
2005-06-10 23:04 ` Paul E. McKenney
2005-06-10 23:23 ` Eric Piel
2005-06-11 0:59 ` Paul E. McKenney
2005-06-11 1:38 ` Eric Piel
2005-06-11 1:47 ` Paul E. McKenney
2005-06-09 23:34 ` Tim Bird
2005-06-09 23:50 ` Paul E. McKenney
2005-06-10 2:59 ` Lee Revell
2005-06-10 15:47 ` Paul E. McKenney
2005-06-10 17:37 ` Andrea Arcangeli
2005-06-10 19:39 ` Bill Huey
2005-06-10 19:41 ` Lee Revell
2005-06-10 20:26 ` Karim Yaghmour
2005-06-10 22:37 ` Bill Huey
2005-06-10 22:43 ` Bill Huey
2005-06-10 22:52 ` Andrea Arcangeli
2005-06-10 23:00 ` Flames go here (was Re: Attempted summary of "RT patch acceptance" thread) Lee Revell
2005-06-10 23:08 ` Attempted summary of "RT patch acceptance" thread Bill Huey
2005-06-10 23:29 ` Andrea Arcangeli
2005-06-11 1:41 ` Paul E. McKenney
2005-06-11 1:50 ` Karim Yaghmour
2005-06-11 2:06 ` Paul E. McKenney
2005-06-11 15:54 ` Andrea Arcangeli
2005-06-11 21:04 ` Paul E. McKenney
2005-06-11 23:48 ` Karim Yaghmour
2005-06-12 17:06 ` Andrea Arcangeli
2005-06-12 21:45 ` Paul E. McKenney
2005-06-13 1:35 ` Karim Yaghmour
2005-06-13 14:40 ` Paul E. McKenney
2005-06-13 19:49 ` Karim Yaghmour
2005-06-13 20:03 ` Daniel Walker
2005-06-13 20:21 ` Paul E. McKenney
2005-06-13 20:26 ` Karim Yaghmour
2005-06-13 20:23 ` Lee Revell
2005-06-13 20:28 ` Daniel Walker
2005-06-13 22:00 ` Karim Yaghmour
2005-06-13 22:11 ` Karim Yaghmour
2005-06-13 22:18 ` Bill Huey
2005-06-13 22:28 ` Karim Yaghmour
2005-06-13 22:29 ` Bill Huey
2005-06-13 22:55 ` Karim Yaghmour
2005-06-14 1:13 ` Nicolas Pitre
2005-06-14 2:07 ` Karim Yaghmour
2005-06-14 2:35 ` Nicolas Pitre
2005-06-14 2:37 ` Nicolas Pitre
2005-06-14 3:24 ` Karim Yaghmour
2005-06-14 16:41 ` Gerrit Huizenga
2005-06-14 19:20 ` Bill Huey
2005-06-14 19:35 ` Valdis.Kletnieks
2005-06-14 21:29 ` Gene Heskett
2005-06-14 20:19 ` Gerrit Huizenga
2005-06-14 7:00 ` Eugeny S. Mints
2005-06-14 16:09 ` Gerrit Huizenga
2005-06-14 16:47 ` Andrea Arcangeli
2005-06-13 20:38 ` Bill Huey
2005-06-13 20:10 ` Paul E. McKenney
2005-06-13 20:31 ` Bill Huey
2005-06-13 20:58 ` Paul E. McKenney
2005-06-13 20:34 ` Karim Yaghmour
2005-06-13 21:02 ` Paul E. McKenney
2005-06-12 17:01 ` Andrea Arcangeli
2005-06-12 18:43 ` Lee Revell
2005-06-12 19:12 ` Bill Huey
2005-06-11 5:23 ` Ingo Molnar
2005-06-11 17:24 ` Andrea Arcangeli
2005-06-10 20:22 ` Daniel Walker [this message]
2005-06-10 20:45 ` Lee Revell
2005-06-10 21:06 ` Andrea Arcangeli
2005-06-10 22:19 ` Bill Huey
2005-06-10 22:37 ` Andrea Arcangeli
2005-06-10 22:49 ` Daniel Walker
2005-06-10 23:01 ` Bill Huey
2005-06-10 23:05 ` Andrea Arcangeli
2005-06-10 23:15 ` Bill Huey
2005-06-10 23:16 ` Paul E. McKenney
2005-06-10 23:26 ` Bill Huey
2005-06-10 23:36 ` Zwane Mwaikambo
2005-06-10 23:41 ` Bill Huey
2005-06-10 23:46 ` Lee Revell
2005-06-11 1:07 ` Paul E. McKenney
2005-06-11 15:16 ` Andrea Arcangeli
2005-06-11 20:32 ` Paul E. McKenney
2005-06-11 0:48 ` Paul E. McKenney
2005-06-10 20:38 ` Lee Revell
2005-06-10 23:12 ` Paul E. McKenney
2005-06-08 15:54 Eric Piel
2005-06-09 2:20 ` Paul E. McKenney
2005-06-10 21:58 ` Eric Piel
2005-06-11 1:55 ` Paul E. McKenney
2005-06-13 22:20 Saksena, Manas
2005-06-13 22:42 ` Karim Yaghmour
2005-06-13 22:44 ` Karim Yaghmour
2005-06-13 22:43 ` Bill Huey
2005-06-13 22:43 Saksena, Manas
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