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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * tools/testing/selftests/kvm/include/perf_test_util.h
4 *
5 * Copyright (C) 2020, Google LLC.
6 */
7
8#ifndef SELFTEST_KVM_PERF_TEST_UTIL_H
9#define SELFTEST_KVM_PERF_TEST_UTIL_H
10
11#include <pthread.h>
12
13#include "kvm_util.h"
14
15/* Default guest test virtual memory offset */
16#define DEFAULT_GUEST_TEST_MEM 0xc0000000
17
18#define DEFAULT_PER_VCPU_MEM_SIZE (1 << 30) /* 1G */
19
20#define PERF_TEST_MEM_SLOT_INDEX 1
21
22struct perf_test_vcpu_args {
23 uint64_t gpa;
24 uint64_t gva;
25 uint64_t pages;
26
27 /* Only used by the host userspace part of the vCPU thread */
28 struct kvm_vcpu *vcpu;
29 int vcpu_idx;
30};
31
32struct perf_test_args {
33 struct kvm_vm *vm;
34 /* The starting address and size of the guest test region. */
35 uint64_t gpa;
36 uint64_t size;
37 uint64_t guest_page_size;
38 int wr_fract;
39
40 /* Run vCPUs in L2 instead of L1, if the architecture supports it. */
41 bool nested;
42
43 struct perf_test_vcpu_args vcpu_args[KVM_MAX_VCPUS];
44};
45
46extern struct perf_test_args perf_test_args;
47
48struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int nr_vcpus,
49 uint64_t vcpu_memory_bytes, int slots,
50 enum vm_mem_backing_src_type backing_src,
51 bool partition_vcpu_memory_access);
52void perf_test_destroy_vm(struct kvm_vm *vm);
53
54void perf_test_set_wr_fract(struct kvm_vm *vm, int wr_fract);
55
56void perf_test_start_vcpu_threads(int vcpus, void (*vcpu_fn)(struct perf_test_vcpu_args *));
57void perf_test_join_vcpu_threads(int vcpus);
58void perf_test_guest_code(uint32_t vcpu_id);
59
60uint64_t perf_test_nested_pages(int nr_vcpus);
61void perf_test_setup_nested(struct kvm_vm *vm, int nr_vcpus, struct kvm_vcpu *vcpus[]);
62
63#endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */