Date: Thu, 10 Jun 2004 22:53:53 -0400 (EDT) From: Robert Watson <rwatson@freebsd.org> To: Alfred Perlstein <alfred@freebsd.org> Cc: cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/kern uipc_usrreq.c Message-ID: <Pine.NEB.3.96L.1040610225158.44958E-100000@fledge.watson.org> In-Reply-To: <20040611024817.GK78955@elvis.mu.org>
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On Thu, 10 Jun 2004, Alfred Perlstein wrote: > * Robert Watson <rwatson@freebsd.org> [040610 19:18] wrote: > > > > Agreed. If the caller doesn't mind us dropping the unp_mtx, the first > > logical thing to try is to replace unp_gcing with an sx lock (or the > > like), and only acquire unp_mtx when calling into code that needs it. > > That's not really needed. The idea is just to avoid initiating another > gc scan while one is in progress. It would almost be tempting to do that cleanup in a separate worker (perhaps a callout), and just launch the cleanup using a cv when necessary. That would get all the work out of a context that probably includes socket activity, etc. > I'll look at it if I find the time/motivation. Sounds good to me :-). I'll move ahead with merging other stack locking bits in the mean time. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Senior Research Scientist, McAfee Research
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