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Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in the task struct

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From: Arjan van de Ven
Subject: Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in the task struct
Date: Tuesday, September 2, 2008 - 6:03 am

On Tue, 2 Sep 2008 12:04:39 +0200
Pavel Machek <pavel@suse.cz> wrote:


Yes it would be nice to have new syscalls for this
and no, nobody and nothing would use them.

THe really big advantag of this default-from-task-struct is that you
can have a program similar to "nice" that allows you to run an existing
program at a specified granularity (say, a version of acroread that has
a really high wakeup count but you still want to save power)


of course these are per thread.. they're in the task struct after all 


prctl() is ugly?


... which nobody uses today.
It's not just new syscalls, it's a new glibc api as well at that point.


-- 
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Messages in current thread:
[PATCH 0/13] Turn hrtimers into a range capable timer, Arjan van de Ven, (Mon Sep 1, 4:03 pm)
[PATCH 1/13] hrtimer: add abstraction functions for access ..., Arjan van de Ven, (Mon Sep 1, 4:05 pm)
[PATCH 2/13] hrtimer: convert kvm to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:05 pm)
[PATCH 3/13] hrtimer: convert timerfd to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:06 pm)
[PATCH 4/13] hrtimer: convert net::sched_cbq to the new hr ..., Arjan van de Ven, (Mon Sep 1, 4:07 pm)
[PATCH 5/13] hrtimer: convert kernel/* to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:08 pm)
[PATCH 6/13] hrtimer: convert powerpc/oprofile to the new ..., Arjan van de Ven, (Mon Sep 1, 4:09 pm)
[PATCH 7/13] hrtimer: convert kvm-ia64 to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:09 pm)
[PATCH 8/13] hrtimer: convert s390 to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:10 pm)
[PATCH 9/13] hrtimer: convert sound/ to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:11 pm)
[PATCH 10/13] hrtimer: rename the &quot;expires&quot; struct member ..., Arjan van de Ven, (Mon Sep 1, 4:12 pm)
[PATCH 10/13] hrtimer: rename the &quot;expires&quot; struct member ..., Arjan van de Ven, (Mon Sep 1, 4:12 pm)
[PATCH 11/13] hrtimer: turn hrtimers into range timers, Arjan van de Ven, (Mon Sep 1, 4:13 pm)
[PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in the ..., Arjan van de Ven, (Mon Sep 1, 4:14 pm)
[PATCH 13/13] hrtimer: make select() and poll() use the hr ..., Arjan van de Ven, (Mon Sep 1, 4:14 pm)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Peter Zijlstra, (Tue Sep 2, 1:22 am)
Re: [PATCH 13/13] hrtimer: make select() and poll() use th ..., Peter Zijlstra, (Tue Sep 2, 1:22 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Tue Sep 2, 3:04 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Peter Zijlstra, (Tue Sep 2, 4:08 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Peter Zijlstra, (Tue Sep 2, 4:15 am)
Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in ..., Arjan van de Ven, (Tue Sep 2, 6:03 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Arjan van de Ven, (Tue Sep 2, 6:05 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Arjan van de Ven, (Tue Sep 2, 6:06 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Peter Zijlstra, (Tue Sep 2, 6:47 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Arjan van de Ven, (Tue Sep 2, 9:02 am)
Re: [PATCH 13/13] hrtimer: make select() and poll() use th ..., Arjan van de Ven, (Tue Sep 2, 9:03 am)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Ingo Molnar, (Sat Sep 6, 7:56 am)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Arjan van de Ven, (Sat Sep 6, 9:30 am)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Ingo Molnar, (Sat Sep 6, 9:33 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Mon Sep 8, 6:27 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Mon Sep 8, 6:40 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Mon Sep 8, 7:15 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Mon Sep 8, 7:22 am)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Rusty Russell, (Thu Sep 11, 8:39 pm)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Arjan van de Ven, (Thu Sep 11, 10:42 pm)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Thomas Gleixner, (Fri Sep 12, 1:24 pm)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Sat Sep 13, 9:24 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Ulrich Drepper, (Sun Sep 14, 8:21 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Sun Sep 14, 8:27 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Sun Sep 14, 8:57 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Ulrich Drepper, (Sun Sep 14, 9:04 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Sun Sep 14, 9:14 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Wed Sep 17, 12:42 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., KOSAKI Motohiro, (Mon Sep 29, 10:16 pm)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Tue Sep 30, 1:28 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., KOSAKI Motohiro, (Tue Sep 30, 1:54 am)