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Date:      Mon, 31 Jul 2006 23:43:11 +0400
From:      Gleb Smirnoff <glebius@FreeBSD.org>
To:        Robert Watson <rwatson@FreeBSD.org>
Cc:        cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org, Pyun YongHyeon <yongari@FreeBSD.org>
Subject:   Re: cvs commit: src/sys/dev/em if_em.c
Message-ID:  <20060731194311.GV96644@FreeBSD.org>
In-Reply-To: <20060731144841.Y71432@fledge.watson.org>
References:  <200607200357.k6K3vwg2039627@repoman.freebsd.org> <20060731131502.GS96644@FreeBSD.org> <20060731144841.Y71432@fledge.watson.org>

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On Mon, Jul 31, 2006 at 02:49:05PM +0100, Robert Watson wrote:
R> On Mon, 31 Jul 2006, Gleb Smirnoff wrote:
R> 
R> >On Thu, Jul 20, 2006 at 03:57:58AM +0000, Pyun YongHyeon wrote:
R> >P> yongari     2006-07-20 03:57:58 UTC
R> >P>
R> >P>   FreeBSD src repository
R> >P>
R> >P>   Modified files:
R> >P>     sys/dev/em           if_em.c
R> >P>   Log:
R> >P>   Honor IFF_DRV_OACTIVE in em_start_locked().
R> >
R> >Isn't it better to shift this change to the em_start(), to avoid double 
R> >check of IFF_DRV_RUNNING? Or may be just merge em_start_locked() into the 
R> >em_start()?
R> 
R> Isn't em_start_locked() called from quite a few different places, including 
R> the interrupt handler, etc, where the mutex is already held?

It is, so the latter idea won't work. However, in all these places
we can know the status of IFF_DRV_OACTIVE before calling the start
routine.

-- 
Totus tuus, Glebius.
GLEBIUS-RIPN GLEB-RIPE



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