From: Avi Kivity <avi@qumranet.com>
To: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Laurent Vivier <Laurent.Vivier@bull.net>,
linux-kernel@vger.kernel.org,
kvm-devel <kvm-devel@lists.sourceforge.net>
Subject: Re: Use virtual cpu accounting if available for guest times.
Date: Thu, 18 Oct 2007 14:41:57 +0200 [thread overview]
Message-ID: <47175495.6060706@qumranet.com> (raw)
In-Reply-To: <200710181439.10390.borntraeger@de.ibm.com>
Christian Borntraeger wrote:
> ppc and s390 offer the possibility to track process times precisely
> by looking at cpu timer on every context switch, irq, softirq etc.
> We can use that infrastructure as well for guest time accounting.
> We need to account the used time before we change the state.
> This patch adds a call to account_system_vtime to kvm_guest_enter
> and kvm_guest exit. If CONFIG_VIRT_CPU_ACCOUNTING is not set,
> account_system_vtime is defined in hardirq.h as an empty function,
> which means this patch does not change the behaviour on other
> platforms.
>
> I compile tested this patch on x86 and function tested the patch on
> s390.
>
> Avi, please apply.
>
>
Done. Thanks!
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2007-10-18 12:42 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-10 14:13 [RESEND 2][PATCH 4/4] Modify KVM to update guest time accounting Laurent Vivier
2007-10-15 9:38 ` Ingo Molnar
2007-10-15 9:47 ` Avi Kivity
2007-10-15 9:50 ` Ingo Molnar
2007-10-15 9:51 ` Ingo Molnar
2007-10-15 10:02 ` Avi Kivity
2007-10-15 10:53 ` Laurent Vivier
2007-10-15 11:15 ` Avi Kivity
2007-10-15 11:33 ` Christian Borntraeger
2007-10-15 11:38 ` Laurent Vivier
2007-10-15 14:39 ` Christian Borntraeger
2007-10-15 14:45 ` Laurent Vivier
2007-10-15 11:37 ` Laurent Vivier
2007-10-15 12:07 ` Avi Kivity
2007-10-15 12:29 ` Laurent Vivier
2007-10-15 16:46 ` Avi Kivity
2007-10-15 19:45 ` Laurent Vivier
2007-10-17 13:08 ` [PATCH] clear PF_VCPU in kvm_guest_exit() Laurent Vivier
2007-10-17 13:18 ` Christian Borntraeger
2007-10-17 14:16 ` Avi Kivity
2007-10-17 15:09 ` Laurent Vivier
2007-10-18 12:39 ` Use virtual cpu accounting if available for guest times Christian Borntraeger
2007-10-18 12:41 ` Avi Kivity [this message]
2007-10-19 16:57 ` [kvm-devel] " Hollis Blanchard
2007-10-19 17:18 ` Hollis Blanchard
2007-10-18 13:19 ` [PATCH] move kvm_guest_exit() after local_irq_enable() Laurent Vivier
2007-10-18 13:32 ` [kvm-devel] " Avi Kivity
2007-10-18 13:49 ` Laurent Vivier
2007-10-22 8:26 ` Ingo Molnar
2007-10-22 8:51 ` Avi Kivity
2007-10-22 8:57 ` Ingo Molnar
2007-10-22 9:10 ` [kvm-devel] " Avi Kivity
2007-10-15 11:19 ` [RESEND 2][PATCH 4/4] Modify KVM to update guest time accounting Christian Borntraeger
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