From: Arjan van de Ven <arjan@infradead.org>
To: Corey Minyard <minyard@acm.org>
Cc: Greg KH <greg@kroah.com>, Sergey Vlasov <vsu@altlinux.ru>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] New operation for kref to help avoid locks
Date: Tue, 01 Mar 2005 23:14:15 +0100 [thread overview]
Message-ID: <1109715256.6293.180.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <4224E499.5060800@acm.org>
> Just doing an atomic operation is not faster than doing a lock, an
> atomic operation, then an unlock? Am I missing something?
if the lock and the atomic are on the same cacheline they're the same
cost on most modern cpus...
next prev parent reply other threads:[~2005-03-01 22:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-26 15:55 Corey Minyard
2005-02-26 20:20 ` Sergey Vlasov
2005-02-26 22:23 ` Corey Minyard
2005-03-01 20:15 ` Greg KH
2005-03-01 21:02 ` Arjan van de Ven
2005-03-01 21:24 ` Greg KH
2005-03-01 21:54 ` Corey Minyard
2005-03-01 22:14 ` Arjan van de Ven [this message]
2005-03-01 23:35 ` Corey Minyard
2005-03-02 0:02 ` Nick Piggin
2005-03-02 0:28 ` Corey Minyard
2005-03-02 0:34 ` Nick Piggin
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