[tip:x86/spinlocks] kvm guest : Add configuration support to enable debug information for KVM Guests

From: tip-bot for Srivatsa Vaddagiri
Date: Thu Aug 08 2013 - 19:21:34 EST

Commit-ID: 20a89c88f7d2458e12f66d7850cf17deec7daa1c
Gitweb: http://git.kernel.org/tip/20a89c88f7d2458e12f66d7850cf17deec7daa1c
Author: Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>
AuthorDate: Tue, 6 Aug 2013 17:15:01 +0530
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Thu, 8 Aug 2013 16:07:30 -0700

kvm guest : Add configuration support to enable debug information for KVM Guests

Signed-off-by: Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20130806114501.20643.5734.sendpatchset@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Suzuki Poulose <suzuki@xxxxxxxxxx>
Signed-off-by: Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>
Acked-by: Gleb Natapov <gleb@xxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
arch/x86/Kconfig | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 112e712..b1fb846 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -657,6 +657,15 @@ config KVM_GUEST
underlying device model, the host provides the guest with
timing infrastructure such as time of day, and system time

+config KVM_DEBUG_FS
+ bool "Enable debug information for KVM Guests in debugfs"
+ depends on KVM_GUEST && DEBUG_FS
+ default n
+ ---help---
+ This option enables collection of various statistics for KVM guest.
+ Statistics are displayed in debugfs filesystem. Enabling this option
+ may incur significant overhead.
source "arch/x86/lguest/Kconfig"

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