From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Takeharu KATO <tkato@cs.fujitsu.co.jp>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linuxppc-dev@lists.linuxppc.org
Subject: Re: [RFC] new feattures to improve linux interrupt response
Date: 07 Aug 2003 13:09:50 +0100 [thread overview]
Message-ID: <1060258189.3168.34.camel@dhcp22.swansea.linux.org.uk> (raw)
In-Reply-To: <3F322919.AFFC7B6F@cs.fujitsu.co.jp>
On Iau, 2003-08-07 at 11:25, Takeharu KATO wrote:
> a) Quick interruption handling facility for embedded systems
> We are designing and implementing quick interrupt handling facility
> for embedded systems. This is achieved by accepting some
> interrupts(these are pre-defined in kernel configuration.) in current
> Linux kernel's critical sections.
>
> We will modify local_irq_disable/local_irq_enable macros
> to keep interrupt masks of some interrupts which need to handle quickly
> un-masked in most of kernel critical sections.
Thats something you can do in board specific/platform specific code and
it does seem to work. I had hacks at one point doing this for the serial
port on the Macintosh II.
prev parent reply other threads:[~2003-08-07 12:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-07 10:25 Takeharu KATO
2003-08-07 12:09 ` Alan Cox [this message]
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