From: Daniel Walker <dwalker@mvista.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: tglx@linutronix.de, Andrew Morton <akpm@osdl.org>,
LKML <linux-kernel@vger.kernel.org>,
John Stultz <johnstul@us.ibm.com>,
Arjan van de Veen <arjan@infradead.org>,
Roman Zippel <zippel@linux-m68k.org>
Subject: Re: [patch 00/46] High resolution timer / dynamic tick update
Date: Wed, 24 Jan 2007 12:09:32 -0800 [thread overview]
Message-ID: <1169669372.19471.274.camel@imap.mvista.com> (raw)
In-Reply-To: <20070124193822.GA28259@elte.hu>
On Wed, 2007-01-24 at 20:38 +0100, Ingo Molnar wrote:
> * Daniel Walker <dwalker@mvista.com> wrote:
>
> > > you are also misunderstanding the change. While the TSC is the only
> > > unstable clocksource right now, the previous code tied the TSC to
> > > the >pm-timer< clocksource. This change makes it generic, hence the
> > > TSC can be verified by a hpet-only system (no pm-timer) as well.
> > > Systems without a pm-timer and with a TSC are quite common. So it
> > > solves a real problem.
> >
> > Using my patch set a TSC specific watchdog could be created that isn't
> > tied a another specific clock. [...]
>
> in other words: Thomas was right with his approach and your criticism
> against the generic code was unjustified. (I agree with the other points
> of Thomas as well, so i'm going with his patchset for now.)
I think his approach was wrong that's why I'm resistant to his
implementation .. However, if he _demands_ to verify the TSC my patchset
provides the functionality to allow him to do it in a _clean_ manner
which meets the constraints that you and he have provided.
Daniel
next prev parent reply other threads:[~2007-01-24 20:10 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-23 22:00 Thomas Gleixner
2007-01-23 22:00 ` [patch 01/46] Add irq flag to disable balancing for an interrupt Thomas Gleixner
2007-01-23 22:00 ` [patch 02/46] Add a functions to handle interrupt affinity setting Thomas Gleixner
2007-01-23 22:00 ` [patch 03/46] [RFC] HZ free ntp Thomas Gleixner
2007-01-23 22:00 ` [patch 04/46] Uninline jiffies.h functions Thomas Gleixner
2007-01-23 22:01 ` [patch 05/46] Thomas Gleixner
2007-01-23 22:01 ` [patch 06/46] Fix timeout overflow with jiffies Thomas Gleixner
2007-01-23 22:01 ` [patch 07/46] GTOD: persistent clock support Thomas Gleixner
2007-01-23 22:01 ` [patch 08/46] i386: use GTOD " Thomas Gleixner
2007-01-23 22:01 ` [patch 09/46] i386 Remove useless code in tsc.c Thomas Gleixner
2007-01-23 22:01 ` [patch 10/46] Simplify the registration of clocksources Thomas Gleixner
2007-01-23 22:01 ` [patch 11/46] x86: rewrite SMP TSC sync code Thomas Gleixner
2007-01-23 22:01 ` [patch 12/46] clocksource: replace is_continuous by a flag field Thomas Gleixner
2007-01-24 11:23 ` [patch] clocksource: fixup is_continous changes in vmitime.c Ingo Molnar
2007-01-24 11:53 ` Thomas Gleixner
2007-01-23 22:01 ` [patch 13/46] clocksource: fixup is_continous changes on ARM Thomas Gleixner
2007-01-23 22:01 ` [patch 14/46] clocksource: fixup is_continous changes on AVR32 Thomas Gleixner
2007-01-23 22:01 ` [patch 15/46] clocksource: fixup is_continous changes on S390 Thomas Gleixner
2007-01-23 22:01 ` [patch 16/46] clocksource: fixup is_continous changes on MIPS Thomas Gleixner
2007-01-23 22:01 ` [patch 17/46] clocksource: Remove the update callback Thomas Gleixner
2007-01-23 22:01 ` [patch 18/46] clocksource: Add verification (watchdog) helper Thomas Gleixner
2007-01-24 15:42 ` [patch] clocksource: add verification (watchdog) helper, fix Ingo Molnar
2007-01-23 22:01 ` [patch 19/46] Mark TSC on GeodeLX reliable Thomas Gleixner
2007-01-23 22:01 ` [patch 20/46] uninline irq_enter() Thomas Gleixner
2007-01-23 22:01 ` [patch 21/46] Fix cascade lookup of next_timer_interrupt Thomas Gleixner
2007-01-23 22:01 ` [patch 22/46] Extend next_timer_interrupt() to use a reference jiffie Thomas Gleixner
2007-01-23 22:01 ` [patch 23/46] hrtimers: namespace and enum cleanup Thomas Gleixner
2007-01-23 22:01 ` [patch 24/46] hrtimers: namespace and enum cleanup vs. git-input Thomas Gleixner
2007-01-23 22:01 ` [patch 25/46] hrtimers: cleanup locking Thomas Gleixner
2007-01-23 22:01 ` [patch 26/46] hrtimers; add state tracking Thomas Gleixner
2007-01-23 22:01 ` [patch 27/46] hrtimers: clean up callback tracking Thomas Gleixner
2007-01-23 22:01 ` [patch 28/46] hrtimers: move and add documentation Thomas Gleixner
2007-01-23 22:01 ` [patch 29/46] ACPI: fix missing include for UP Thomas Gleixner
2007-01-23 22:01 ` [patch 30/46] ACPI keep track of timer broadcasting Thomas Gleixner
2007-01-23 22:01 ` [patch 31/46] Allow early access to the power management timer Thomas Gleixner
2007-01-23 22:01 ` [patch 32/46] i386, apic: clean up the APIC code Thomas Gleixner
2007-01-23 22:01 ` [patch 33/46] clockevents: add core functionality Thomas Gleixner
2007-01-23 22:01 ` [patch 34/46] tick-management: " Thomas Gleixner
2007-01-23 22:01 ` [patch 35/46] tick-management: broadcast functionality Thomas Gleixner
2007-01-23 22:01 ` [patch 36/46] tick-management: dyntick / highres functionality Thomas Gleixner
2007-01-28 2:03 ` [PATCH] high_res_timers: precisely update_process_times; " Karsten Wiese
2007-01-23 22:01 ` [patch 37/46] clockevents: i383 drivers Thomas Gleixner
2007-01-23 22:01 ` [patch 38/46] i386 rework local apic timer calibration Thomas Gleixner
2007-01-23 22:01 ` [patch 39/46] i386 prepare for dyntick Thomas Gleixner
2007-01-23 22:01 ` [patch 40/46] i386 prepare nmi watchdog for dynticks Thomas Gleixner
2007-01-23 22:01 ` [patch 41/46] i386: enable dynticks in kconfig Thomas Gleixner
2007-01-23 22:01 ` [patch 42/46] hrtimers: add high resolution timer support Thomas Gleixner
2007-01-23 22:01 ` [patch 43/46] hrtimers: prevent possible itimer DoS Thomas Gleixner
2007-01-23 22:01 ` [patch 44/46] Add debugging feature /proc/timer_stat Thomas Gleixner
2007-01-23 22:01 ` [patch 45/46] Add debugging feature /proc/timer_list Thomas Gleixner
2007-01-23 22:01 ` [patch 46/46] Add SysRq-Q to print timer_list debug info Thomas Gleixner
2007-01-24 2:16 ` [patch 00/46] High resolution timer / dynamic tick update Daniel Walker
2007-01-24 2:23 ` Andrew Morton
2007-01-24 3:25 ` Daniel Walker
2007-01-24 7:07 ` Ingo Molnar
2007-01-24 9:30 ` Daniel Walker
2007-01-24 9:51 ` Ingo Molnar
2007-01-24 10:23 ` Daniel Walker
2007-01-24 10:29 ` Ingo Molnar
2007-01-24 10:53 ` Daniel Walker
2007-01-24 11:04 ` Ingo Molnar
2007-01-24 11:13 ` Thomas Gleixner
2007-01-24 15:53 ` Daniel Walker
[not found] ` <20070124160046.GA24798@elte.hu>
2007-01-24 17:21 ` Daniel Walker
[not found] ` <1169655076.19471.241.camel@imap.mvista.com>
2007-01-24 19:38 ` Ingo Molnar
2007-01-24 20:09 ` Daniel Walker [this message]
2007-01-24 20:13 ` Ingo Molnar
2007-01-24 19:57 ` john stultz
2007-01-24 20:51 ` Daniel Walker
2007-01-24 21:23 ` john stultz
2007-01-24 21:37 ` Daniel Walker
2007-01-25 6:10 ` Ingo Molnar
2007-01-25 6:37 ` Ingo Molnar
2007-01-25 6:32 ` Ingo Molnar
2007-01-25 16:38 ` Daniel Walker
2007-01-28 2:17 ` Andrew Morton
2007-01-29 21:31 ` john stultz
2007-01-29 21:45 ` john stultz
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