73e75b416f
Existing KVM statistics are either just counters (kvm_stat) reported for KVM generally or trace based aproaches like kvm_trace. For KVM on powerpc we had the need to track the timings of the different exit types. While this could be achieved parsing data created with a kvm_trace extension this adds too much overhead (at least on embedded PowerPC) slowing down the workloads we wanted to measure. Therefore this patch adds a in-kernel exit timing statistic to the powerpc kvm code. These statistic is available per vm&vcpu under the kvm debugfs directory. As this statistic is low, but still some overhead it can be enabled via a .config entry and should be off by default. Since this patch touched all powerpc kvm_stat code anyway this code is now merged and simplified together with the exit timing statistic code (still working with exit timing disabled in .config). Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
24 lines
544 B
Makefile
24 lines
544 B
Makefile
#
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# Makefile for Kernel-based Virtual Machine module
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#
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EXTRA_CFLAGS += -Ivirt/kvm -Iarch/powerpc/kvm
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common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o)
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common-objs-$(CONFIG_KVM_TRACE) += $(addprefix ../../../virt/kvm/, kvm_trace.o)
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kvm-objs := $(common-objs-y) powerpc.o emulate.o
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obj-$(CONFIG_KVM_EXIT_TIMING) += timing.o
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obj-$(CONFIG_KVM) += kvm.o
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AFLAGS_booke_interrupts.o := -I$(obj)
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kvm-440-objs := \
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booke.o \
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booke_interrupts.o \
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44x.o \
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44x_tlb.o \
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44x_emulate.o
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obj-$(CONFIG_KVM_440) += kvm-440.o
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