Date: Tue, 29 Apr 2003 14:00:13 -0400 (EDT) From: Garrett Wollman <wollman@lcs.mit.edu> To: "M. Warner Losh" <imp@bsdimp.com> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/fxp if_fxp.c if_fxpvar.h Message-ID: <200304291800.h3TI0Dnr040242@khavrinen.lcs.mit.edu> In-Reply-To: <20030429.115524.21927823.imp@bsdimp.com> References: <200304290545.h3T5j99Y076513@repoman.freebsd.org> <20030429133708.A84234@grasshopper.cs.duke.edu> <20030429.115524.21927823.imp@bsdimp.com>
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<<On Tue, 29 Apr 2003 11:55:24 -0600 (MDT), "M. Warner Losh" <imp@bsdimp.com> said: > This likely means that some higher level of locking is necessary so > that we can make sure that the interrupts can't happen once detach > starts. What am I missing here? You can just disable interrupts in the hardware first thing, while holding whatever lock the handler would normally need to obtain, then force-terminate the handler thread if it happens to be waiting for that lock after you're done tearing it down. -GAWollman
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