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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 <arjan@...>
To: Pavel Machek <pavel@...>
Cc: <linux-kernel@...>, <torvalds@...>, <dwmw2@...>, <drepper@...>, <mingo@...>, <tglx@...>
Subject: Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in the task struct
Date: Monday, September 8, 2008 - 10:22 am

On Mon, 8 Sep 2008 16:15:55 +0200
Pavel Machek <pavel@suse.cz> wrote:


that's whats there

that's not working very well in general, and doesn't work across exec
etc.


We've been talking to Ulrich to figure out what the right API for this
is (eg how to extend select/poll for this) and I still plan to work on
this, but both Linus and Ulrich seem to be very ademant that it means
only few apps will use it (and I agree with that, just look at how many
apps use linux specific APIs such as sendfile(), linux AIO etc... )


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