From: Ingo Molnar <mingo@elte.hu>
To: "Sébastien Dugué" <sebastien.dugue@bull.net>
Cc: Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, tglx@linutronix.de
Subject: Re: [RFC][PATCH RT 1/2] futex_requeue-optimize
Date: Fri, 12 May 2006 13:12:56 +0200 [thread overview]
Message-ID: <20060512111256.GA27481@elte.hu> (raw)
In-Reply-To: <1147432419.3969.70.camel@frecb000686>
* Sébastien Dugué <sebastien.dugue@bull.net> wrote:
> On Fri, 2006-05-12 at 10:10 +0200, Sébastien Dugué wrote:
> > On Fri, 2006-05-12 at 08:32 +0200, Ingo Molnar wrote:
> > > * Andrew Morton <akpm@osdl.org> wrote:
> > >
> > > > Should the futex code be using hlist_heads for that hashtable?
> > >
> > > yeah. That would save 1K of .data on 32-bit platforms, 2K on 64-bit
> > > platforms.
> >
> > I'll try to look into this.
> >
>
> Well, moving the hash bucket list to an hlist may save a few bytes
> on .data, but all the insertions are done at the tail on this list
> which would not be easily done using hlists.
>
> Any thoughts?
just queue to the head. This is a hash-list, ordering has only
performance effects.
Ingo
next prev parent reply other threads:[~2006-05-12 11:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-10 9:27 [RFC][PATCH RT 1/2] futex_requeue-optimize Sébastien Dugué
2006-05-11 16:15 ` Andrew Morton
2006-05-12 6:32 ` Ingo Molnar
2006-05-12 8:10 ` Sébastien Dugué
2006-05-12 11:13 ` Sébastien Dugué
2006-05-12 11:12 ` Ingo Molnar [this message]
2006-05-12 13:16 ` Sébastien Dugué
2006-05-12 13:40 ` Ingo Molnar
2006-05-12 8:09 ` Sébastien Dugué
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