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Date:      Sun, 15 Apr 2007 16:09:13 -0600 (MDT)
From:      Scott Long <scottl@samsco.org>
To:        "M. Warner Losh" <imp@bsdimp.com>
Cc:        scottl@FreeBSD.org, src-committers@FreeBSD.org, rwatson@FreeBSD.org, cvs-all@FreeBSD.org, cvs-src@FreeBSD.org
Subject:   Re: cvs commit: src/sys/cam cam_ccb.h cam_periph.c cam_periph.h cam_sim.c cam_sim.h cam_xpt.c cam_xpt.h cam_xpt_periph.h src/sys/cam/scsi scsi_cd.c scsi_ch.c scsi_da.c scsi_low.c scsi_pass.c scsi_pt.c scsi_sa.c scsi_ses.c scsi_sg.c ...
Message-ID:  <20070415154521.L1488@pooker.samsco.org>
In-Reply-To: <20070415.131016.-1510350511.imp@bsdimp.com>
References:  <200704150849.l3F8nKhw040250@repoman.freebsd.org> <20070415105711.T84174@fledge.watson.org> <20070415.131016.-1510350511.imp@bsdimp.com>

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On Sun, 15 Apr 2007, M. Warner Losh wrote:

> In message: <20070415105711.T84174@fledge.watson.org>
>            Robert Watson <rwatson@FreeBSD.org> writes:
> : On Sun, 15 Apr 2007, Scott Long wrote:
> :
> : >  Remove Giant from CAM.  Drivers (SIMs) now register a mutex that CAM will
> : >  use to synchornize and protect all data objects that are used for that
> : >  SIM.  Drivers that are not yet MPSAFE register Giant and operate as
> : >  usual.  RIght now, no drivers are MPSAFE, though a few will be changed
> : >  in the coming week as this work settles down.
> : >
> : >  The driver API has changed, so all CAM drivers will need to be recompiled.
> : >  The userland API has not changed, so tools like camcontrol do not need to
> : >  be recompiled.
> :
> : Excellent.  This was one of the few remaining serious pieces of non-MPSAFE
> : infrastructure in the kernel.  Thanks greatly for doing this work!
>
> Now all the scsi ethernet drivers that were threatened with MPSAFE
> removal can continue on in the tree.  Way cool.
>
> Warner
>
> P.S.  :-)
>

One of us didn't have enough coffee this morning ;-)




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