Date: Wed, 17 Sep 2014 20:16:33 +0400 From: Andrey Chernov <ache@freebsd.org> To: Alexander Motin <mav@FreeBSD.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: Re: svn commit: r271707 - stable/10/sys/kern Message-ID: <5419B3E1.1090703@freebsd.org> In-Reply-To: <201409171406.s8HE6LNu071461@svn.freebsd.org> References: <201409171406.s8HE6LNu071461@svn.freebsd.org>
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On 17.09.2014 18:06, Alexander Motin wrote:
> + /*
> + * Make sure that tdq_load updated before calling this function
> + * is globally visible before we read tdq_cpu_idle. Idle thread
> + * accesses both of them without locks, and the order is important.
> + */
> + mb();
> +
> if (TD_IS_IDLETHREAD(ctd)) {
I don't understand this comment's first phrase with two verbs. Copy &
paste result?
I also don't see tdq_load access in this function.
--
http://ache.vniz.net/
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