1 files changed, 63 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/perf_test_util.h b/tools/testing/selftests/kvm/include/perf_test_util.h
new file mode 100644
index 000000000000..eaa88df0555a
--- /dev/null
+++ b/tools/testing/selftests/kvm/include/perf_test_util.h
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * tools/testing/selftests/kvm/include/perf_test_util.h
+ *
+ * Copyright (C) 2020, Google LLC.
+ */
+
+#ifndef SELFTEST_KVM_PERF_TEST_UTIL_H
+#define SELFTEST_KVM_PERF_TEST_UTIL_H
+
+#include <pthread.h>
+
+#include "kvm_util.h"
+
+/* Default guest test virtual memory offset */
+#define DEFAULT_GUEST_TEST_MEM		0xc0000000
+
+#define DEFAULT_PER_VCPU_MEM_SIZE	(1 << 30) /* 1G */
+
+#define PERF_TEST_MEM_SLOT_INDEX	1
+
+struct perf_test_vcpu_args {
+	uint64_t gpa;
+	uint64_t gva;
+	uint64_t pages;
+
+	/* Only used by the host userspace part of the vCPU thread */
+	struct kvm_vcpu *vcpu;
+	int vcpu_idx;
+};
+
+struct perf_test_args {
+	struct kvm_vm *vm;
+	/* The starting address and size of the guest test region. */
+	uint64_t gpa;
+	uint64_t size;
+	uint64_t guest_page_size;
+	int wr_fract;
+
+	/* Run vCPUs in L2 instead of L1, if the architecture supports it. */
+	bool nested;
+
+	struct perf_test_vcpu_args vcpu_args[KVM_MAX_VCPUS];
+};
+
+extern struct perf_test_args perf_test_args;
+
+struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int nr_vcpus,
+				   uint64_t vcpu_memory_bytes, int slots,
+				   enum vm_mem_backing_src_type backing_src,
+				   bool partition_vcpu_memory_access);
+void perf_test_destroy_vm(struct kvm_vm *vm);
+
+void perf_test_set_wr_fract(struct kvm_vm *vm, int wr_fract);
+
+void perf_test_start_vcpu_threads(int vcpus, void (*vcpu_fn)(struct perf_test_vcpu_args *));
+void perf_test_join_vcpu_threads(int vcpus);
+void perf_test_guest_code(uint32_t vcpu_id);
+
+uint64_t perf_test_nested_pages(int nr_vcpus);
+void perf_test_setup_nested(struct kvm_vm *vm, int nr_vcpus, struct kvm_vcpu *vcpus[]);
+
+#endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */