From: Naresh <knaresh@india.hp.com>
To: Thibaut VARENE <varenet@esiee.fr>
Cc: "parisc-linux@lists.parisc-linux.org"
<parisc-linux@lists.parisc-linux.org>
Subject: Re: [parisc-linux] Affined IRQs.
Date: Mon, 11 Aug 2003 18:03:03 +0530 [thread overview]
Message-ID: <3F378CFE.2A12407@india.hp.com> (raw)
In-Reply-To: 20030811094324.17ed7a86.varenet@esiee.fr
A couple of questions:
1. Do does this mean interrupts can go to any CPU?
2. If a CPU on an SMP system is stopped or its interrupts are blocked, will
its interrupts automatically be serviced on another online CPU, due to their
non-affining nature?
Regards,
Naresh.
Thibaut VARENE wrote:
> > Hi,
> > The IA-64 Linux kernel has a concept of affined IRQs, wherein IRQs can
> > be bound/affined to particular CPUs. The affinity information shows up
> > in '/proc/irq/#/smp_affinity'. I cannot see any affinity of IRQs to CPUs
> > in PA ( iosapic.c and irq.c).. Is my understanding correct?
> > Regards,
> > Naresh.
>
> This has to be implemented for parisc and is on my todo list ;)
>
> (BTW, on vacation till Aug 25th.)
>
> Thibaut VARENE
> The PA/Linux ESIEE Team
> http://pateam.esiee.fr/
> _______________________________________________
> parisc-linux mailing list
> parisc-linux@lists.parisc-linux.org
> http://lists.parisc-linux.org/mailman/listinfo/parisc-linux
next prev parent reply other threads:[~2003-08-11 12:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-11 6:54 [parisc-linux] Affined IRQs Naresh
2003-08-11 7:43 ` Thibaut VARENE
2003-08-11 12:33 ` Naresh [this message]
2003-08-11 13:44 ` Thibaut VARÈNE
2003-08-11 16:00 ` Grant Grundler
2003-08-11 15:44 ` Grant Grundler
2003-08-11 15:49 ` Matthew Wilcox
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