Re: [kvm-devel] [PATCH/RFC 4/4, second shot]KVM uses "account_guest_time()"

Avi Kivity wrote:

Laurent Vivier wrote:

quoted

KVM updates vtime in task_struct to allow account_guest_time() to modify user,
system and guest time in cpustat accordingly.
  

quoted

--- kvm.orig/drivers/kvm/Kconfig	2007-08-17 10:24:46.000000000 +0200
+++ kvm/drivers/kvm/Kconfig	2007-08-17 10:25:25.000000000 +0200

@@ -41,4 +41,10 @@
 	  Provides support for KVM on AMD processors equipped with the AMD-V
 	  (SVM) extensions.
 
+config GUEST_ACCOUNTING
+	bool "Virtual Machine accounting support"
+	depends on KVM
+	---help---
+	  Allows to account CPU time used by the Virtual Machines.
+

Other way round.  In the patch that adds account_guest_time(), have a
CONFIG_GUEST_ACCOUNTING (defaulting to n, with no description, help, or
dependencies.  Then, CONFIG_KVM can select GUEST_ACCOUNTING.

I was wondering in which Kconfig I can put it...

The advantages of this are:
- the puppyvisor can also select this if it so wishes
- we don't have core code reference some obscure module

I agree.

CONFIG_PREEMPT_NOTIFIERS does the same thing.

I saw

Laurent
-- 
------------- Laurent.Vivier@bull.net  --------------
          "Software is hard" - Donald Knuth