Date: Mon, 02 Feb 2009 13:45:13 +0200 From: Andriy Gapon <avg@icyb.net.ua> To: Paolo Pisati <p.pisati@oltrelinux.com> Cc: freebsd-hackers@freebsd.org Subject: Re: INTR_FILTER? Message-ID: <4986DCC9.8080500@icyb.net.ua> In-Reply-To: <4982FBC7.1080100@oltrelinux.com> References: <49819757.2010002@icyb.net.ua> <4982FBC7.1080100@oltrelinux.com>
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on 30/01/2009 15:08 Paolo Pisati said the following: > Andriy Gapon wrote: >> INTR_FILTER - what does it do? >> It doesn't seem to be documented anywhere, but seems to affect interrupt >> code. >> >> > for a bit more information about interrupt filtering, see here: > > http://lists.freebsd.org/pipermail/freebsd-hackers/2007-February/019704.html Paolo, so would it be correct to say that INTR_FILTER is designed to make life much easier in view of shared interrupts. >From the code it seems that there would be virtually no difference when there are no shared interrupt, but with shared interrupts INTR_FILTER removes all the churn and makes interrupt handling nice and clean (from device drivers point of view). -- Andriy Gapon
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