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Re: [PATCH] NEC EMMA2RH support

To: Thiemo Seufer <>
Subject: Re: [PATCH] NEC EMMA2RH support
From: Ralf Baechle <>
Date: Fri, 19 May 2006 11:52:52 +0100
Cc: dmitry pervushin <>,
In-reply-to: <>
Original-recipient: rfc822;
References: <1147946423.8223.4.camel@diimka-laptop> <> <1147950509.8223.10.camel@diimka-laptop> <>
User-agent: Mutt/
On Thu, May 18, 2006 at 12:17:04PM +0100, Thiemo Seufer wrote:

> > May be, I have
> > misunderstood the modern ways in linux kernel development, but I am
> > pretty sure that assembler interrupt handler will be faster than C
> > code.
> Only marginally, it doesn't outweigh the maintenance trouble.

Actually the average interrupt handler was sufficiently badly scheduled
such that the C written ones were usually better.  Not only, gcc knows
alot of CPU specifics about scheduling, so the average interrupt should
now suffer from many less taken branches.


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