From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Andi Kleen <ak@suse.de>
Cc: Jan Beulich <jbeulich@novell.com>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
virtualization@lists.osdl.org,
Xen-devel <xen-devel@lists.xensource.com>,
Chris Wright <chrisw@sous-sol.org>,
lkml <linux-kernel@vger.kernel.org>, Jiri Bohac <jbohac@suse.cz>
Subject: Re: [Xen-devel] [patch 14/33] xen: xen time implementation
Date: Wed, 06 Jun 2007 07:15:31 -0700 [thread overview]
Message-ID: <4666C183.9060008@goop.org> (raw)
In-Reply-To: <200706061226.11326.ak@suse.de>
Andi Kleen wrote:
>> I once had some code in there to do that, implemented in very boneheaded
>> way with a spinlock to protect the "last time returned" variable. I
>> expect there's a better way to implement it.
>>
>
> But any per CPU setup likely needs this to avoid non monotonicity
Yeah. The point I didn't quite make was that this should be something
that the clock core should handle rather than dealing with it in every
clocksource.
J
next prev parent reply other threads:[~2007-06-06 14:15 UTC|newest]
Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-22 14:09 [patch 00/33] xen: Xen paravirt_ops implementation Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 01/33] xen: paravirt: add an "mm" argument to alloc_pt Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 02/33] xen: paravirt: add a hook for once the allocator is ready Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 03/33] xen: paravirt: increase IRQ limit Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 04/33] xen: paravirt: unstatic leave_mm Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 05/33] xen: paravirt: unstatic smp_store_cpu_info Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 06/33] xen: paravirt: make siblingmap functions visible Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 07/33] xen: paravirt: export __supported_pte_mask Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 08/33] xen: Allocate and free vmalloc areas Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 09/33] xen: Add nosegneg capability to the vsyscall page notes Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 10/33] xen: Add Xen interface header files Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 11/33] xen: Core Xen implementation Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 12/33] xen: Xen virtual mmu Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 13/33] xen: xen event channels Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 14/33] xen: xen time implementation Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-06-06 8:39 ` Jan Beulich
2007-06-06 8:39 ` [Xen-devel] " Jan Beulich
2007-06-06 8:54 ` Keir Fraser
2007-06-06 8:54 ` Keir Fraser
2007-06-06 9:30 ` Jan Beulich
2007-06-06 9:30 ` [Xen-devel] " Jan Beulich
2007-06-06 9:56 ` Keir Fraser
2007-06-06 9:56 ` Keir Fraser
2007-06-06 11:00 ` Jan Beulich
2007-06-06 11:00 ` [Xen-devel] " Jan Beulich
2007-06-06 11:52 ` Keir Fraser
2007-06-06 11:52 ` Keir Fraser
2007-06-06 11:52 ` Keir Fraser
2007-06-06 11:52 ` Keir Fraser
2007-06-06 11:58 ` Petersson, Mats
2007-06-06 12:21 ` Jan Beulich
2007-06-06 12:18 ` [Xen-devel] " Andi Kleen
2007-06-06 12:46 ` Jan Beulich
2007-06-06 12:46 ` [Xen-devel] " Jan Beulich
2007-06-06 12:53 ` Andi Kleen
2007-06-06 12:53 ` [Xen-devel] " Andi Kleen
2007-06-06 12:54 ` Keir Fraser
2007-06-06 12:54 ` Keir Fraser
2007-06-06 12:54 ` [Xen-devel] " Keir Fraser
2007-06-06 12:54 ` Keir Fraser
2007-06-06 9:56 ` Keir Fraser
2007-06-06 9:56 ` Keir Fraser
2007-06-06 8:54 ` Keir Fraser
2007-06-06 8:54 ` Keir Fraser
2007-06-06 10:05 ` Jeremy Fitzhardinge
2007-06-06 10:20 ` Jan Beulich
2007-06-06 10:20 ` [Xen-devel] " Jan Beulich
2007-06-06 10:26 ` Andi Kleen
2007-06-06 10:26 ` [Xen-devel] " Andi Kleen
2007-06-06 14:15 ` Jeremy Fitzhardinge [this message]
2007-05-22 14:09 ` [patch 15/33] xen: xen configuration Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 16/33] xen: xen: add pinned page flag Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 17/33] xen: Complete pagetable pinning for Xen Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:09 ` [patch 18/33] xen: xen: ignore RW mapping of RO pages in pagetable_init Jeremy Fitzhardinge
2007-05-22 14:09 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 19/33] xen: Account for time stolen by Xen Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 20/33] xen: Implement xen_sched_clock Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 21/33] xen: Xen SMP guest support Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-06-06 7:34 ` Jan Beulich
2007-06-06 7:34 ` [Xen-devel] " Jan Beulich
2007-06-06 8:33 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 22/33] xen: Add support for preemption Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 23/33] xen: xen: lazy-mmu operations Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 24/33] xen: xen: hack to prevent bad segment register reload Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 25/33] xen: Use the hvc console infrastructure for Xen console Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 26/33] xen: Add Xen grant table support Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 27/33] xen: Add the Xenbus sysfs and virtual device hotplug driver Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 28/33] xen: Add Xen virtual block device driver Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 29/33] xen: Add the Xen virtual network " Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 30/33] xen: Xen machine operations Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 31/33] xen: xen: handle external requests for shutdown, reboot and sysrq Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 32/33] xen: Place vcpu_info structure into per-cpu memory, if possible Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:10 ` [patch 33/33] xen: Attempt to patch inline versions of common operations Jeremy Fitzhardinge
2007-05-22 14:10 ` Jeremy Fitzhardinge
2007-05-22 14:57 ` [patch 00/33] xen: Xen paravirt_ops implementation Andi Kleen
2007-05-22 15:06 ` Jeremy Fitzhardinge
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