Date: Sat, 10 Jan 2004 15:15:18 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Bruce Evans <bde@zeta.org.au> Cc: arch@freebsd.org Subject: Re: Interrupt API change Message-ID: <60042.1073744118@critter.freebsd.dk> In-Reply-To: Your message of "Sun, 11 Jan 2004 01:09:49 %2B1100." <20040111005502.O22604@gamplex.bde.org>
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In message <20040111005502.O22604@gamplex.bde.org>, Bruce Evans writes: >> Heuristics >> can then be built on this information to better detect things like >> interrupt storms. > >That'a about all it can do. Considering the fatality of interrupt storms, this alone is reason enough to implement the change. >In the non-shared case, >individual handlers can better decide about interrupt storms in a >device-specific way. Considering that interrupt storms more often than not are caused by driver bugs, expecting the driver to mitigate seems terminally optimistic to me. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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