Date: Mon, 10 Jan 2005 00:20:16 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: dinkevich@gmail.com Cc: julian@elischer.org Subject: Re: stack synchronization Message-ID: <20050110.002016.127178679.imp@bsdimp.com> In-Reply-To: <6.1.2.0.2.20050110085622.0338a980@pop.gmail.com> References: <41E1C8C5.4070605@elischer.org> <20050109.200910.28786915.imp@bsdimp.com> <6.1.2.0.2.20050110085622.0338a980@pop.gmail.com>
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In message: <6.1.2.0.2.20050110085622.0338a980@pop.gmail.com>
Boris Dinkevich <dinkevich@gmail.com> writes:
: I see no reference to giant locking in 5.3 (except in event/task threads)
It is implicit...
: Does this not affect performance when multiple devices are connected to the
: host ?
Yes.
: Also, I have seen a modification to the bsd stack by Hans Petter Selasky,
: where he uses per bus mtxes for locking,
: is this not the better approach to the problem ?
Likely, but there are some issues with Hans' driver still.
: Interrupt is synced via Giant ?
Yes.
Warner
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