linux-kernel - Re: [RESEND 2][PATCH 3/4] modify account_system_time() to update guest time in cpustat and task

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Message-Id: <20070910085331.84dc1fb5.randy.dunlap@oracle.com>
Date:	Mon, 10 Sep 2007 08:53:31 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Laurent Vivier <Laurent.Vivier@...l.net>
Cc:	Ingo Molnar <mingo@...e.hu>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND 2][PATCH 3/4] modify account_system_time() to update
 guest time in cpustat and task_struct

On Mon, 10 Sep 2007 16:12:58 +0200 Laurent Vivier wrote:

> [PATCH 3/4] modify account_system_time() to add cputime to cpustat->guest if we
> are running a VCPU. We add this cputime to  cpustat->user instead of
> cpustat->system because this part of KVM code is in fact user code although it
> is executed in the kernel. We duplicate VCPU time between guest and user to
> allow an unmodified "top(1)" to display correct value. A modified "top(1)" is
> able to display good cpu user time and cpu guest time by subtracting cpu guest
> time from cpu user time. Update "gtime" in task_struct accordingly.
> 
> Signed-off-by: Laurent Vivier <Laurent.Vivier@...l.net>


Hi,
Please use kernel-doc notation here:
(see Documentation/kernel-doc-nano-HOWTO.txt or source file examples
or ask)

easy fix:

 /*
+ * Account guest cpu time to a process.

/**
 * account_guest_time - Account guest cpu time to a process.

+ * @p: the process that the cpu time gets accounted to
+ * @cputime: the cpu time spent in virtual machine since the last update
+ */
+void account_guest_time(struct task_struct *p, cputime_t cputime)
+{

Thanks.
---
~Randy
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