perf_test_util.h (1626B)
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 int vcpu_id; 29}; 30 31struct perf_test_args { 32 struct kvm_vm *vm; 33 /* The starting address and size of the guest test region. */ 34 uint64_t gpa; 35 uint64_t size; 36 uint64_t guest_page_size; 37 int wr_fract; 38 39 /* Run vCPUs in L2 instead of L1, if the architecture supports it. */ 40 bool nested; 41 42 struct perf_test_vcpu_args vcpu_args[KVM_MAX_VCPUS]; 43}; 44 45extern struct perf_test_args perf_test_args; 46 47struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus, 48 uint64_t vcpu_memory_bytes, int slots, 49 enum vm_mem_backing_src_type backing_src, 50 bool partition_vcpu_memory_access); 51void perf_test_destroy_vm(struct kvm_vm *vm); 52 53void perf_test_set_wr_fract(struct kvm_vm *vm, int wr_fract); 54 55void perf_test_start_vcpu_threads(int vcpus, void (*vcpu_fn)(struct perf_test_vcpu_args *)); 56void perf_test_join_vcpu_threads(int vcpus); 57void perf_test_guest_code(uint32_t vcpu_id); 58 59uint64_t perf_test_nested_pages(int nr_vcpus); 60void perf_test_setup_nested(struct kvm_vm *vm, int nr_vcpus); 61 62#endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */