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-rw-r--r--arch/x86/kvm/Kconfig11
-rw-r--r--arch/x86/kvm/Makefile3
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 76c70ab44382..8d45fabc5f3b 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -50,6 +50,17 @@ config KVM_AMD
Provides support for KVM on AMD processors equipped with the AMD-V
(SVM) extensions.
+config KVM_TRACE
+ bool "KVM trace support"
+ depends on KVM && MARKERS && SYSFS
+ select RELAY
+ select DEBUG_FS
+ default n
+ ---help---
+ This option allows reading a trace of kvm-related events through
+ relayfs. Note the ABI is not considered stable and will be
+ modified in future updates.
+
# OK, it's a little counter-intuitive to do this, but it puts it neatly under
# the virtualization menu.
source drivers/lguest/Kconfig
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index 4d0c22e11f1a..c97d35c218db 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -3,6 +3,9 @@
#
common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o)
+ifeq ($(CONFIG_KVM_TRACE),y)
+common-objs += $(addprefix ../../../virt/kvm/, kvm_trace.o)
+endif
EXTRA_CFLAGS += -Ivirt/kvm -Iarch/x86/kvm