linux-kernel - Re: futex(2) man page update help request

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Message-ID: <5374D18D.6020608@redhat.com>
Date:	Thu, 15 May 2014 10:39:09 -0400
From:	"Carlos O'Donell" <carlos@...hat.com>
To:	mtk.manpages@...il.com, Peter Zijlstra <peterz@...radead.org>
CC:	Darren Hart <dvhart@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, Jakub Jelinek <jakub@...hat.com>,
	"linux-man@...r.kernel.org" <linux-man@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Davidlohr Bueso <davidlohr.bueso@...com>,
	Arnd Bergmann <arnd@...db.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Linux API <linux-api@...r.kernel.org>
Subject: Re: futex(2) man page update help request

On 05/15/2014 09:49 AM, Michael Kerrisk (man-pages) wrote:
> On Thu, May 15, 2014 at 3:22 PM, Peter Zijlstra <peterz@...radead.org> wrote:
>> On Thu, May 15, 2014 at 09:18:22AM -0400, Carlos O'Donell wrote:
>>> On 05/15/2014 04:14 AM, Peter Zijlstra wrote:
>>>> On Wed, May 14, 2014 at 04:23:38PM -0400, Carlos O'Donell wrote:
>>>>> There are other syscalls like gettid() that have a:
>>>>> NOTE: There is no glibc wrapper for this system call; see NOTES.
>>>>
>>>> Yes, can we finally fix that please? It gets tedious having to endlessly
>>>> copy/paste that thing around.
>>>
>>> What exactly would you like fixed?
>>
>> Not having gettid() in glibc.
> 
> Get in the line ;-).
> http://sourceware.org/bugzilla/show_bug.cgi?id=6399

I have no objections to this, but I absolutely object to this without
someone documenting and gathering consensus for consistent terminology
to be used between the kernel and glibc.

The relevant comment is here:
https://sourceware.org/bugzilla/show_bug.cgi?id=6399#c26

I'd like to see a glibc manual patch for the threads.texi file, which
can be completely linux-specific, to document gettid() and nomenclature.
It should talk about the nomenclature used to discuss these interfaces
and explain when it is or isn't valid to use a task id and with what 
functions.

For example does gettid *really* return a pid_t as considered by
userspace? It's not a full out process...

Cheers,
Carlos.
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