From: Alan Cox <alan@redhat.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Arjan van de Ven <arjan@infradead.org>,
Alan Cox <alan@redhat.com>, Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org
Subject: Re: [patch, -rc5-mm1] locking validator: special rule: 8390.c disable_irq()
Date: Sun, 4 Jun 2006 11:38:42 -0400 [thread overview]
Message-ID: <20060604153842.GA14801@devserv.devel.redhat.com> (raw)
In-Reply-To: <1149426961.27696.7.camel@localhost.localdomain>
On Sun, Jun 04, 2006 at 09:16:01AM -0400, Steven Rostedt wrote:
> that had its irq misrouted, couldn't it cause a storm if we don't call
> the handler for it? So really disable_irq is broken for the misrouting
> case, and perhaps needs to be replaced with a spin_lock_irqsave?
For the ne2k at least that simply is not possible, the latencies are so
bad that you start dropping serial characters and the like if you do.
The disease is not as bad as the cure..
next prev parent reply other threads:[~2006-06-04 15:39 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-31 20:02 [patch, -rc5-mm1] locking validator: special rule: 8390.c disable_irq() Ingo Molnar
2006-05-31 20:31 ` Arjan van de Ven
2006-05-31 21:27 ` Ingo Molnar
2006-05-31 21:41 ` Alan Cox
2006-05-31 21:43 ` Arjan van de Ven
2006-05-31 21:47 ` Ingo Molnar
2006-05-31 21:56 ` Arjan van de Ven
2006-05-31 22:00 ` Ingo Molnar
2006-05-31 22:02 ` Arjan van de Ven
2006-06-03 14:37 ` Steven Rostedt
2006-06-03 21:53 ` Alan Cox
2006-06-03 22:34 ` Steven Rostedt
2006-06-04 9:34 ` Arjan van de Ven
2006-06-04 13:16 ` Steven Rostedt
2006-06-04 15:38 ` Alan Cox [this message]
2006-06-04 15:44 ` Steven Rostedt
2006-06-04 16:10 ` Alan Cox
2006-06-04 16:22 ` Steven Rostedt
2006-06-04 21:26 ` Alan Cox
2006-06-04 21:28 ` Steven Rostedt
2006-06-04 21:44 ` Ingo Molnar
2006-06-05 1:04 ` Steven Rostedt
2006-06-06 3:33 ` [PATCH -mm] misroute-irq: Don't call desc->chip->end because of edge interrupts Steven Rostedt
2006-06-06 4:20 ` Andrew Morton
2006-06-06 10:46 ` Steven Rostedt
2006-06-06 8:01 ` Ingo Molnar
2006-06-06 10:50 ` Steven Rostedt
2006-06-06 21:48 ` Andrew Morton
2006-06-06 21:50 ` Ingo Molnar
2006-06-06 3:49 ` [RFC][PATCH -mm] postpone misrouted irqs when disabled Steven Rostedt
2006-06-01 9:46 ` [patch, -rc5-mm1] locking validator: special rule: 8390.c disable_irq() Alan Cox
2006-06-01 10:02 ` Ingo Molnar
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