From d4c9ff2d1b78e385471b3f4d80c0596909926ef7 Mon Sep 17 00:00:00 2001 From: "Feng(Eric) Liu" Date: Thu, 10 Apr 2008 08:47:53 -0400 Subject: KVM: Add kvm trace userspace interface This interface allows user a space application to read the trace of kvm related events through relayfs. Signed-off-by: Feng (Eric) Liu Signed-off-by: Avi Kivity --- arch/x86/kvm/Kconfig | 11 +++++++++++ arch/x86/kvm/Makefile | 3 +++ 2 files changed, 14 insertions(+) (limited to 'arch/x86/kvm') diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 76c70ab4438..8d45fabc5f3 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 4d0c22e11f1..c97d35c218d 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 -- cgit v1.2.3