Re: kicking everybody out of the softc

To: tech-kern%NetBSD.org@localhost
Subject: Re: kicking everybody out of the softc
From: der Mouse <mouse%Rodents-Montreal.ORG@localhost>
Date: Sun, 15 Aug 2010 16:08:29 -0400 (EDT)

> I've been working in spare moments on lockless code to prevent
> storage for a softc from going away while a driver uses it.  [...]

This looks superficially good, but isn't the cost of the necessary
memory barries and cache flushes comparable with the cost of a more
traditional scheme?

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