From: Andi Kleen <andi@firstfloor.org>
To: Theodore Tso <tytso@mit.edu>, Andi Kleen <andi@firstfloor.org>,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
Roland McGrath <roland@redhat.com>,
akpm@linux-foundation.org, mm-commits@vger.kernel.org,
npiggin@suse.de, drepper@redhat.com, oleg@tv-sign.ru,
sebastien.dugue@bull.net, linux-kernel@vger.kernel.org
Subject: Re: [patch] change futex_wait() to hrtimers
Date: Mon, 12 Mar 2007 15:22:16 +0100 [thread overview]
Message-ID: <20070312142216.GA15357@one.firstfloor.org> (raw)
In-Reply-To: <20070312141214.GG4372@thunk.org>
> This becomes especially important if we want the tickless code to
> really shine as far as power management is concerned. Unfortunately,
> the POSIX timer abstraction doesn't give this kind of flexibility
> easily, so it's going to be a while before we see significant
> userspace adoption of such a kernel feature, but I think it's
> something that would be still worthwhile to add.
I suspect it would be overkill to specify that on every sleep operation.
99% of applications won't care and for the 1% leftover a global per
process setting should be fine.
I think a single prctl() and a global sysctl as default would be enough.
-Andi
next prev parent reply other threads:[~2007-03-12 14:22 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200703110814.l2B8EaI1007615@shell0.pdx.osdl.net>
[not found] ` <20070312011259.3834A1801C4@magilla.sf.frob.com>
2007-03-12 9:10 ` [patch] change futex_wait() to hrtimers Ingo Molnar
2007-03-12 9:16 ` Nick Piggin
2007-03-12 11:02 ` Ingo Molnar
2007-03-12 11:13 ` Nick Piggin
2007-03-12 11:19 ` Ingo Molnar
2007-03-12 11:29 ` Nick Piggin
2007-03-12 11:38 ` Ingo Molnar
2007-03-12 11:52 ` Nick Piggin
2007-03-12 12:21 ` Ingo Molnar
2007-03-12 12:36 ` Nick Piggin
2007-03-12 11:19 ` Thomas Gleixner
2007-03-12 11:27 ` Andi Kleen
2007-03-12 11:00 ` Thomas Gleixner
2007-03-12 10:58 ` Andi Kleen
2007-03-12 11:04 ` Ingo Molnar
2007-03-12 11:20 ` Andi Kleen
2007-03-12 11:28 ` Ingo Molnar
2007-03-12 14:12 ` Theodore Tso
2007-03-12 14:22 ` Andi Kleen [this message]
2007-03-12 14:31 ` Ingo Molnar
2007-03-12 14:32 ` Nick Piggin
2007-03-15 0:03 linux
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