From: Andi Kleen <ak@suse.de>
To: "Jan Beulich" <JBeulich@novell.com>
Cc: vojtech@suse.cz, linux-kernel@vger.kernel.org, discuss@x86-64.org
Subject: Re: [PATCH 13/39] NLKD/x86-64 - time adjustment
Date: Fri, 11 Nov 2005 03:12:15 +0100 [thread overview]
Message-ID: <200511110312.15616.ak@suse.de> (raw)
In-Reply-To: <437365EF.76F0.0078.0@novell.com>
On Thursday 10 November 2005 15:23, Jan Beulich wrote:
>
> >Please remove the ifdefs too. 64bit HPET support would be fine, but
> >only as a runtime mechanism, not compile time.
>
> This I added only for the purpose of not affecting existing code in
> existing configurations. If the code is generally acceptable, then I'll be
> more than happy to convert it.
We can't use 64bit HPET everywhere because quite some chipsets only
support 32bit HPET. So it has to be a runtime switch depending on the
capabilities of the hardware.
>
> >Can you remove debugger_jiffies please?
> >The code has to handle long delays anyways (e.g. if someone uses a target
> >probe), so we cannot rely on such hacks anyways.
>
> As above, I introduced this only to not affect existing code. If the added
> latency is no problem, then of course only the overflow safe code path
> should be kept, and then debugger_jiffies is completely unnecessary.
Hmm - didn't notice anything particularly slow. Or what were you thinking
about regarding the latency? And it should only run at each timer interrupt,
so it isn't a fast path. So I guess it's best to run it always.
-Andi
next prev parent reply other threads:[~2005-11-11 2:12 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-09 13:54 [PATCH 0/39] NLKD - Novell Linux Kernel Debugger Jan Beulich
2005-11-09 13:56 ` [PATCH 1/39] NLKD - an alternative kallsyms approach Jan Beulich
2005-11-09 13:57 ` [PATCH 2/39] NLKD - an alternative early ioremap approach Jan Beulich
2005-11-09 13:58 ` [PATCH 3/39] NLKD - early/late CPU up/down notification Jan Beulich
2005-11-09 13:59 ` [PATCH 4/39] NLKD/i386 " Jan Beulich
2005-11-09 14:01 ` [PATCH 5/39] NLKD/x86-64 " Jan Beulich
2005-11-10 13:10 ` Andi Kleen
2005-11-14 8:04 ` [discuss] " Jan Beulich
2005-11-14 12:37 ` Andi Kleen
2005-11-09 14:01 ` [PATCH 6/39] NLKD - early panic notification Jan Beulich
2005-11-09 14:02 ` [PATCH 7/39] NLKD - task create/destroy notification Jan Beulich
2005-11-09 14:03 ` [PATCH 8/39] NLKD - rmmod notification Jan Beulich
2005-11-09 14:04 ` [PATCH 9/39] NLKD - hotkey notification Jan Beulich
2005-11-09 14:05 ` [PATCH 10/39] NLKD - console layout change notification Jan Beulich
2005-11-09 14:06 ` [PATCH 11/39] NLKD - time adjustment Jan Beulich
2005-11-09 14:06 ` [PATCH 12/39] NLKD/i386 " Jan Beulich
2005-11-09 19:10 ` George Anzinger
2005-11-10 8:12 ` Jan Beulich
2005-11-11 0:17 ` George Anzinger
2005-11-09 14:08 ` [PATCH 13/39] NLKD/x86-64 " Jan Beulich
2005-11-09 14:13 ` [PATCH 18/39] NLKD/x86-64 - INT1/INT3 handling changes Jan Beulich
2005-11-09 14:14 ` [PATCH 19/39] NLKD/x86-64 - stack-pointer-invalid markers Jan Beulich
2005-11-09 14:15 ` [PATCH 20/39] NLKD/x86-64 - switch_to() floating point adjustment Jan Beulich
2005-11-09 14:16 ` [PATCH 21/39] NLKD/x86-64 - core adjustments Jan Beulich
2005-11-10 13:24 ` [PATCH 20/39] NLKD/x86-64 - switch_to() floating point adjustment Andi Kleen
2005-11-10 14:07 ` Jan Beulich
2005-11-10 13:23 ` [PATCH 19/39] NLKD/x86-64 - stack-pointer-invalid markers Andi Kleen
2005-11-10 14:25 ` Jan Beulich
2005-11-10 13:21 ` [PATCH 18/39] NLKD/x86-64 - INT1/INT3 handling changes Andi Kleen
2005-11-10 14:07 ` Jan Beulich
2005-11-10 14:25 ` Andi Kleen
2005-11-10 15:00 ` Jan Beulich
2005-11-11 3:39 ` [discuss] " Andi Kleen
2005-11-10 13:19 ` [PATCH 13/39] NLKD/x86-64 - time adjustment Andi Kleen
2005-11-10 14:23 ` Jan Beulich
2005-11-11 2:12 ` Andi Kleen [this message]
2005-11-12 9:22 ` Vojtech Pavlik
2005-11-12 17:21 ` Andi Kleen
2005-11-12 20:44 ` Vojtech Pavlik
2005-11-15 0:38 ` George Anzinger
2005-11-15 1:05 ` [discuss] " Andi Kleen
2005-11-15 7:50 ` Vojtech Pavlik
2005-11-15 8:24 ` Jan Beulich
2005-11-10 14:43 ` Vojtech Pavlik
2005-11-09 14:09 ` [PATCH 14/39] NLKD - kernel trace buffer access Jan Beulich
2005-11-09 14:09 ` [PATCH 15/39] NLKD - early pseudo-fs Jan Beulich
2005-11-09 14:11 ` [PATCH 16/39] NLKD - core adjustments Jan Beulich
2005-11-09 14:11 ` [PATCH 17/39] NLKD/i386 " Jan Beulich
2005-11-09 19:00 ` Adrian Bunk
2005-11-10 8:04 ` Jan Beulich
2005-11-10 10:29 ` Adrian Bunk
2005-11-10 11:52 ` Jan Beulich
2005-11-10 12:36 ` Lars Marowsky-Bree
2005-11-09 14:18 ` [PATCH 22/39] NLKD - core Jan Beulich
2005-11-09 14:19 ` [PATCH 23/39] NLKD/x86 " Jan Beulich
2005-11-09 14:20 ` [PATCH 24/39] NLKD/i386 " Jan Beulich
2005-11-09 14:21 ` [PATCH 25/39] NLKD/x86-64 " Jan Beulich
2005-11-10 13:30 ` Andi Kleen
2005-11-09 14:22 ` [PATCH 26/39] NLKD - run time library Jan Beulich
2005-11-09 14:23 ` [PATCH 27/39] NLKD/i386 " Jan Beulich
2005-11-09 14:23 ` [PATCH 28/39] NLKD/x86-64 " Jan Beulich
2005-11-10 13:32 ` Andi Kleen
[not found] ` <437214B7.76F0.0078.0@novell.com>
[not found] ` <4372156A.76F0.0078.0@novell.com>
2005-11-09 14:28 ` [PATCH 34/39] NLKD/x86 - Console Debug Agent Jan Beulich
[not found] ` <43721600.76F0.0078.0@novell.com>
2005-11-09 14:30 ` [PATCH 38/39] NLKD/i386 - Remote " Jan Beulich
2005-11-09 14:31 ` [PATCH 39/39] NLKD/x86-64 " Jan Beulich
2005-11-09 14:29 ` [PATCH 15/39] NLKD - early pseudo-fs Al Viro
2005-11-09 14:37 ` Jan Beulich
2005-11-09 15:00 ` Al Viro
2005-11-09 16:00 ` Jan Beulich
2005-11-10 5:44 ` [PATCH 14/39] NLKD - kernel trace buffer access Keith Owens
2005-11-10 8:02 ` Jan Beulich
2005-11-09 18:51 ` [PATCH 11/39] NLKD - time adjustment George Anzinger
2005-11-09 16:50 ` [PATCH 6/39] NLKD - early panic notification Greg KH
2005-11-09 16:45 ` [PATCH 3/39] NLKD - early/late CPU up/down notification Greg KH
2005-11-09 17:09 ` Jan Beulich
2005-11-09 17:19 ` Greg KH
2005-11-10 7:41 ` Jan Beulich
2005-11-10 20:59 ` Sam Ravnborg
2005-11-11 7:52 ` Jan Beulich
2005-11-12 20:52 ` Randy.Dunlap
2005-11-10 23:01 ` Greg KH
2005-11-11 10:06 ` [PATCH 2/39] NLKD - an alternative early ioremap approach Pavel Machek
2005-11-11 10:19 ` Jan Beulich
2005-11-09 16:50 ` [PATCH 1/39] NLKD - an alternative kallsyms approach Randy.Dunlap
2005-11-09 16:57 ` Greg KH
2005-11-09 17:20 ` Jan Beulich
2005-11-09 16:59 ` [PATCH 0/39] NLKD - Novell Linux Kernel Debugger Jeff Garzik
2005-11-09 17:06 ` Randy.Dunlap
2005-11-09 17:14 ` Jan Beulich
2005-11-09 17:56 ` Alan Cox
2005-11-09 18:05 ` Greg KH
2005-11-09 18:54 ` Paul Jackson
2005-11-10 12:41 ` Christoph Hellwig
2005-11-13 1:09 ` Andi Kleen
2005-11-13 2:53 ` jmerkey
2005-11-13 3:44 ` Andi Kleen
2005-11-13 3:26 ` Jeff V. Merkey
2005-11-13 3:32 ` Jeff V. Merkey
2005-11-09 17:53 ` Alan Cox
2005-11-09 16:25 ` Jeffrey V. Merkey
2005-11-10 14:48 ` Mark Lord
2005-11-10 15:28 ` Tom Rini
2005-11-10 16:37 ` Alan Cox
2005-11-13 1:11 ` Andi Kleen
[not found] ` <437214E4.76F0.0078.0@novell.com>
[not found] ` <4372153C.76F0.0078.0@novell.com>
2005-11-10 13:33 ` [PATCH 32/39] NLKD/x86-64 - Core Debug Engine Andi Kleen
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