From: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
To: "Michael Kerrisk (man-pages)"
<mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Carlos O'Donell <carlos-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Darren Hart <dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
Jakub Jelinek <jakub-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
lkml <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Davidlohr Bueso <davidlohr.bueso-VXdhtT5mjnY@public.gmane.org>,
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org>,
Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Linux API <linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Torvald Riegel <triegel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Roland McGrath <roland-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Darren Hart <dvhart-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Anton Blanchard <anton-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>,
Petr Baudis <pasky-AlSwsSmVLrQ@public.gmane.org>,
Eric Dumazet <edumazet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
bill o gallmeister
<bgallmeister-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Jan Kiszka <jan.kiszka-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>,
Daniel Wagner <wagi-kQCPcA+X3s7YtjvyW6yDsg@public.gmane.org>,
Rich Felker <dalias-8zAoT0mYgF4@public.gmane.org>
Subject: Re: futex(2) man page update help request
Date: Fri, 16 Jan 2015 16:20:50 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1501161618080.5526@nanos> (raw)
In-Reply-To: <54B92B71.2090509-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On Fri, 16 Jan 2015, Michael Kerrisk (man-pages) wrote:
> Hello Thomas,
>
> On 01/15/2015 11:23 PM, Thomas Gleixner wrote:
> > On Thu, 15 Jan 2015, Michael Kerrisk (man-pages) wrote:
> >>> [EINVAL] uaddr equal uaddr2. Requeue to same futex.
> >>
> >> ??? I added this, but does this error not occur only for PI requeues?
> >
> > It's equally wrong for normal futexes. And its actually the same code
> > checking for this for all variants.
>
> I don't understand "equally wrong" in your reply, I'm sorry. Do you
> mean:
>
> a) This error text should be there for both normal and PI requeues
It is there for both. The requeue code has that check independent of
the requeue type (normal/pi). It never makes sense to requeue
something to itself whether normal or pi futex. We added this for PI,
because there it is harmful, but we did not special case it. So normal
futexes get the same treatment.
Thanks,
tglx
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next prev parent reply other threads:[~2015-01-16 15:20 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-14 10:35 futex(2) man page update help request Michael Kerrisk (man-pages)
[not found] ` <537346E5.4050407-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-05-14 16:18 ` Darren Hart
2014-05-14 19:03 ` Michael Kerrisk (man-pages)
[not found] ` <CAKgNAkh+PWzT2SByaLk_OtiAXeZSkWoMgu+ivDOt1dTWVtaatQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-14 19:59 ` Darren Hart
2014-05-14 20:23 ` Carlos O'Donell
[not found] ` <5373D0CA.2050204-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-05-14 20:44 ` Andy Lutomirski
2014-05-14 23:34 ` Thomas Gleixner
[not found] ` <alpine.DEB.2.02.1405150121230.6261-3cz04HxQygjZikZi3RtOZ1XZhhPuCNm+@public.gmane.org>
2014-05-15 3:12 ` Carlos O'Donell
[not found] ` <537430B5.2060001-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-05-15 4:49 ` Michael Kerrisk (man-pages)
2014-05-15 4:53 ` Michael Kerrisk (man-pages)
[not found] ` <CAKgNAkjQ5Dd_U9OojXdgeforpRevvPHNFAw99kBFPCwHgf7Ggg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-15 14:14 ` Thomas Gleixner
[not found] ` <alpine.DEB.2.02.1405151144390.6261-3cz04HxQygjZikZi3RtOZ1XZhhPuCNm+@public.gmane.org>
2014-05-15 20:19 ` Michael Kerrisk (man-pages)
[not found] ` <53752157.9070803-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-08-04 14:46 ` Carlos O'Donell
2014-05-15 20:35 ` Darren Hart
[not found] ` <CF9A731D.913E6%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-01-15 15:12 ` Michael Kerrisk (man-pages)
[not found] ` <54B7D8D4.2070203-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-17 1:33 ` Darren Hart
2015-01-17 9:16 ` Michael Kerrisk (man-pages)
[not found] ` <54BA2872.5040003-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-17 19:26 ` Darren Hart
[not found] ` <D0DFF430.B7F94%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-01-18 10:18 ` Michael Kerrisk (man-pages)
2015-01-15 15:10 ` Michael Kerrisk (man-pages)
[not found] ` <54B7D87C.3090901-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-15 22:23 ` Thomas Gleixner
2015-01-16 15:17 ` Michael Kerrisk (man-pages)
[not found] ` <54B92B71.2090509-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-16 15:20 ` Thomas Gleixner [this message]
2015-01-16 20:54 ` Michael Kerrisk (man-pages)
[not found] ` <54B97A72.2050205-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-17 0:46 ` Darren Hart
[not found] ` <D0DEECA2.B7EAD%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-01-19 10:45 ` Thomas Gleixner
2015-01-19 14:07 ` Michael Kerrisk (man-pages)
2015-01-23 18:19 ` Torvald Riegel
2015-01-24 10:05 ` Thomas Gleixner
2015-01-24 12:58 ` Torvald Riegel
[not found] ` <1422104287.29655.13.camel-I2ZjUw8blINjztcc/or7kQ@public.gmane.org>
2015-01-24 16:25 ` Thomas Gleixner
2015-01-17 0:56 ` Davidlohr Bueso
[not found] ` <1421456216.27134.2.camel-h16yJtLeMjHk1uMJSBkQmQ@public.gmane.org>
2015-01-17 1:11 ` Darren Hart
2015-01-23 18:29 ` Torvald Riegel
[not found] ` <1422037788.29655.0.camel-I2ZjUw8blINjztcc/or7kQ@public.gmane.org>
2015-01-24 11:35 ` Thomas Gleixner
2015-01-24 13:12 ` Torvald Riegel
[not found] ` <1422105142.29655.16.camel-I2ZjUw8blINjztcc/or7kQ@public.gmane.org>
2015-01-27 7:48 ` Michael Kerrisk (man-pages)
2015-02-05 19:57 ` Darren Hart
2014-05-15 8:13 ` Peter Zijlstra
[not found] ` <20140515081357.GC11096-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2014-05-15 15:43 ` Darren Hart
2014-05-15 8:14 ` Peter Zijlstra
[not found] ` <20140515081444.GD11096-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2014-05-15 13:18 ` Carlos O'Donell
[not found] ` <5374BE9E.8080408-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-05-15 13:22 ` Peter Zijlstra
[not found] ` <20140515132235.GM30445-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2014-05-15 13:49 ` Michael Kerrisk (man-pages)
[not found] ` <CAKgNAkjrS8WWMoQzsiOkMVn1_Bf06uFCL6ECU7z=mv0fszg+gQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-15 13:55 ` Peter Zijlstra
2014-05-15 14:39 ` Carlos O'Donell
2014-05-15 15:11 ` Peter Zijlstra
2014-05-14 20:56 ` Davidlohr Bueso
2014-05-14 21:03 ` Darren Hart
[not found] ` <CF99279F.907FC%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2014-05-14 22:21 ` Paul E. McKenney
[not found] ` <1400100977.3865.30.camel-5JQ4ckphU/8SZAcGdq5asR6epYMZPwEe5NbjCUgZEJk@public.gmane.org>
2014-05-15 0:28 ` H. Peter Anvin
2014-05-15 0:35 ` Andy Lutomirski
[not found] ` <CALCETrXzMiS9DwvmZn++wg0x6v-ZR0YP9fAdco4PRST=nTY4nQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-15 0:41 ` H. Peter Anvin
[not found] ` <53740A30.20807-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2014-05-15 19:10 ` Carlos O'Donell
[not found] ` <CF98E3EF.90564%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2014-05-14 21:05 ` Davidlohr Bueso
2014-05-15 15:15 ` Joseph S. Myers
2014-05-15 0:18 ` H. Peter Anvin
[not found] ` <537407ED.8050606-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2014-05-15 5:21 ` Darren Hart
[not found] ` <CF999CD6.90A93%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2014-05-15 8:23 ` Peter Zijlstra
2014-05-15 13:46 ` Michael Kerrisk (man-pages)
[not found] ` <5374C54B.7040408-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-05-15 14:59 ` H. Peter Anvin
2014-05-15 15:42 ` chrubis
[not found] ` <20140515154246.GC6926-HSzIOc4LzcM@public.gmane.org>
2014-05-15 15:52 ` H. Peter Anvin
[not found] ` <5374E2A4.2070408-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2014-05-15 16:01 ` chrubis-AlSwsSmVLrQ
[not found] ` <20140515160152.GA7529-HSzIOc4LzcM@public.gmane.org>
2014-05-15 16:07 ` H. Peter Anvin
[not found] ` <5374E653.2080309-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2014-05-15 16:17 ` chrubis-AlSwsSmVLrQ
2014-05-15 16:56 ` H. Peter Anvin
[not found] ` <5374F1B3.9080006-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2014-05-15 17:06 ` chrubis-AlSwsSmVLrQ
2014-05-15 15:47 ` Darren Hart
2014-05-15 15:35 ` chrubis-AlSwsSmVLrQ
2014-05-15 15:28 ` chrubis-AlSwsSmVLrQ
[not found] ` <20140515152834.GA6926-HSzIOc4LzcM@public.gmane.org>
2014-05-15 15:40 ` Steven Rostedt
2014-05-15 16:14 ` Darren Hart
[not found] ` <CF9A3521.90ECC%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2014-05-15 16:30 ` chrubis-AlSwsSmVLrQ
[not found] ` <20140515163004.GB7959-HSzIOc4LzcM@public.gmane.org>
2014-05-15 18:17 ` Darren Hart
[not found] ` <CF9A3A75.90F40%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2014-05-15 19:05 ` chrubis-AlSwsSmVLrQ
[not found] ` <20140515190529.GA8887-HSzIOc4LzcM@public.gmane.org>
2014-05-15 19:38 ` Darren Hart
[not found] ` <CF9A658E.91322%dvhart-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2014-08-11 10:19 ` chrubis-AlSwsSmVLrQ
2014-11-26 13:41 ` Cyril Hrubis
2015-02-16 13:14 ` Cyril Hrubis
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