Date: Fri, 22 May 1998 22:53:23 +0200 From: Eivind Eklund <eivind@yes.no> To: dyson@FreeBSD.ORG, Greg Lehey <grog@lemis.com> Cc: hackers@FreeBSD.ORG Subject: Re: SMP resource locking Message-ID: <19980522225323.00501@follo.net> In-Reply-To: <199805220501.AAA02725@dyson.iquest.net>; from John S. Dyson on Fri, May 22, 1998 at 12:01:18AM -0500 References: <19980522114305.Z27201@freebie.lemis.com> <199805220501.AAA02725@dyson.iquest.net>
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On Fri, May 22, 1998 at 12:01:18AM -0500, John S. Dyson wrote: > Greg Lehey said: > > I haven't paid much attention to SMP problems yet, but I need to now. > > Can somebody point me to functions to ensure single-thread passing of > > critical sections? In a UP environment I'd use splhigh (), but that's > > obviously not enough for SMP. > > > For now, splhigh in a normal driver context will work. That is > of course broken, but it will work fine. In the future, it won't. What's the right way to write this now? Add locks 'as one feel like', or just ignore the lock-issues beyond spl(), or ? Eivind, curious. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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