From: Andrea Arcangeli <andrea@suse.de>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@transmeta.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
"David S. Miller" <davem@redhat.com>,
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
arjanv@redhat.com
Subject: Re: [patch] softirq-2.4.5-A1
Date: Sun, 27 May 2001 19:12:49 +0200 [thread overview]
Message-ID: <20010527191249.I676@athlon.random> (raw)
In-Reply-To: <Pine.LNX.4.33.0105261920030.3336-200000@localhost.localdomain> <Pine.LNX.4.33.0105262128230.1222-200000@localhost.localdomain>
In-Reply-To: <Pine.LNX.4.33.0105262128230.1222-200000@localhost.localdomain>; from mingo@elte.hu on Sat, May 26, 2001 at 09:33:59PM +0200
On Sat, May 26, 2001 at 09:33:59PM +0200, Ingo Molnar wrote:
> interrupts disabled, otherwise we can end up getting another softirq
> right after the test. (and this causes a missed softirq.)
an irq that could mark the softirq active under entry.S will also run
do_softirq itself before iret to entry.S. If the softirq remains active
after an irq it it because it was marked active again under do_softirq
and ksoftirq is the way to go for fixing that case I think.
Andrea
next prev parent reply other threads:[~2001-05-27 17:13 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-26 17:59 [patch] severe softirq handling performance bug, fix, 2.4.5 Ingo Molnar
2001-05-26 19:33 ` [patch] softirq-2.4.5-A1 Ingo Molnar
2001-05-27 17:12 ` Andrea Arcangeli [this message]
2001-05-27 19:08 ` Ingo Molnar
2001-05-27 20:05 ` Andrea Arcangeli
2001-05-28 1:17 ` Horst von Brand
2001-05-26 23:55 ` [patch] severe softirq handling performance bug, fix, 2.4.5 David S. Miller
2001-05-27 3:28 ` Albert D. Cahalan
2001-05-27 17:18 ` Andrea Arcangeli
2001-05-27 19:00 ` [patch] softirq-2.4.5-B0 Ingo Molnar
2001-05-27 19:15 ` David S. Miller
2001-05-27 19:19 ` Ingo Molnar
2001-05-27 17:07 ` [patch] severe softirq handling performance bug, fix, 2.4.5 Andrea Arcangeli
2001-05-27 17:17 ` David S. Miller
2001-05-27 17:56 ` Andrea Arcangeli
2001-05-27 19:05 ` Ingo Molnar
2001-05-27 19:55 ` Andrea Arcangeli
2001-05-27 21:00 ` Ingo Molnar
2001-05-28 19:26 ` kuznet
2001-05-27 19:09 ` David S. Miller
2001-05-27 20:24 ` Andrea Arcangeli
2001-06-10 10:40 ` Rusty Russell
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