From: Andrew Morton <akpm@linux-foundation.org>
To: Roman Zippel <zippel@linux-m68k.org>
Cc: Jonathan Corbet <corbet@lwn.net>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH] msleep() with hrtimers
Date: Tue, 7 Aug 2007 16:29:40 -0700 [thread overview]
Message-ID: <20070807162940.74f536f8.akpm@linux-foundation.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0708080115020.1817@scrub.home>
On Wed, 8 Aug 2007 01:16:49 +0200 (CEST)
Roman Zippel <zippel@linux-m68k.org> wrote:
> Hi,
>
> On Tue, 7 Aug 2007, Andrew Morton wrote:
>
> > I'd be surprised if there was significant overhead - the maximum frequency
> > at which msleep() can be called is 1000Hz. We'd need an awful lot of
> > overhead for that to cause problems, surely?
> >
> > <thinks he's missing something again>
>
> _Anybody_ has yet to answer what's wrong with adding a nanosleep() and
> using that instead.
>
You mean that the implementation could be simplified if msleep() were to
simply call do_nanosleep()?
That would work, although a bit of refactoring would be needed so that we
could implement the TASK_UNINTERRUPTIBLE msleep() that way.
next prev parent reply other threads:[~2007-08-07 23:31 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-03 18:37 [PATCH] msleep() with hrtimers Jonathan Corbet
2007-08-03 18:54 ` Ingo Molnar
2007-08-03 19:19 ` Roman Zippel
2007-08-03 19:46 ` Arjan van de Ven
2007-08-03 19:58 ` Roman Zippel
2007-08-03 23:53 ` Arjan van de Ven
2007-08-04 3:00 ` Roman Zippel
2007-08-04 19:19 ` Arjan van de Ven
2007-08-06 0:09 ` Roman Zippel
2007-08-06 0:43 ` Arjan van de Ven
2007-08-06 1:03 ` Roman Zippel
2007-08-06 5:39 ` Arjan van de Ven
2007-08-06 10:03 ` Roman Zippel
2007-08-06 10:20 ` Manu Abraham
2007-08-06 15:53 ` Arjan van de Ven
2007-08-07 10:40 ` Manu Abraham
2007-08-07 12:45 ` Roman Zippel
2007-08-08 4:15 ` Arjan van de Ven
2007-08-09 19:31 ` Denis Vlasenko
2007-08-09 20:01 ` Denis Vlasenko
2007-08-07 19:40 ` Andrew Morton
2007-08-07 23:16 ` Roman Zippel
2007-08-07 23:29 ` Andrew Morton [this message]
2007-08-08 3:47 ` Roman Zippel
2007-08-08 4:14 ` Andrew Morton
2007-08-09 22:31 ` Roman Zippel
2007-08-08 11:55 ` Andi Kleen
2007-08-08 11:09 ` Manu Abraham
2007-08-08 11:52 ` Andi Kleen
2007-08-08 11:59 ` Manu Abraham
2007-08-09 7:16 ` Andrew Morton
2007-08-09 15:08 ` [linux-usb-devel] " Alan Stern
2007-11-28 10:29 ` Andrew Morton
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