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From: "Manu Abraham" <abraham.manu@gmail.com>
To: "Roman Zippel" <zippel@linux-m68k.org>
Cc: "Arjan van de Ven" <arjan@infradead.org>,
	"Jonathan Corbet" <corbet@lwn.net>,
	linux-kernel@vger.kernel.org,
	"Thomas Gleixner" <tglx@linutronix.de>,
	akpm@linux-foundation.org, "Ingo Molnar" <mingo@elte.hu>
Subject: Re: [PATCH] msleep() with hrtimers
Date: Mon, 6 Aug 2007 14:20:10 +0400	[thread overview]
Message-ID: <1a297b360708060320m2e9aa419n1f043fb18d987850@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0708061159370.1817@scrub.home>

On 8/6/07, Roman Zippel <zippel@linux-m68k.org> wrote:
> Hi,
>
> On Sun, 5 Aug 2007, Arjan van de Ven wrote:
>
> > > There's no problem to provide a high resolution sleep, but there is also
> > > no reason to mess with msleep, don't fix what ain't broken...
> >
> > John Corbet provided the patch because he had a problem with the current
> > msleep... in that it didn't provide as good a common case as he
> > wanted... so I think your statement is wrong ;)
>
> Only under the assumptation, that msleep _must_ be "fixed" for all other
> current users too.
> Give users a choice to use msleep or nanosleep, how do you know what's
> "best" for them?
>

You mean to say, the granularity of msleep is in mS with a tolerance
of +/- "n" mS whereas nanosleep would have the tolerance in nS ?
(ignoring all the discussions about hrtimers and their internal
design)

I guess many people are/were confused on the aspect that, a msleep(1)
meant sleep for a 1mS and nothing more. Well, this would explain, some
of my hair raising incidents, if i understood you correctly.

Since it is such a confusion, maybe it needs to be documented some
place, that people don't fall into the same trap.

Manu

  reply	other threads:[~2007-08-06 10:20 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 [this message]
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
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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