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

[tip-bot for Srivatsa Vaddagiri]

Commit-ID:  1e20eb8557cdabf76473b09572be8aa8a2bb9bc0
Gitweb:     http://git.kernel.org/tip/1e20eb8557cdabf76473b09572be8aa8a2bb9bc0
Author:     Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>
AuthorDate: Fri, 9 Aug 2013 19:52:01 +0530
Committer:  H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Fri, 9 Aug 2013 07:54:18 -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/1376058122-8248-14-git-send-email-raghavendra.kt@xxxxxxxxxxxxxxxxxx
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"
 
 config PARAVIRT_TIME_ACCOUNTING
--
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