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 22 struct 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 32 struct 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 46 extern struct perf_test_args perf_test_args; 47 48 struct 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); 52 void perf_test_destroy_vm(struct kvm_vm *vm); 53 54 void perf_test_set_wr_fract(struct kvm_vm *vm, int wr_fract); 55 56 void perf_test_start_vcpu_threads(int vcpus, void (*vcpu_fn)(struct perf_test_vcpu_args *)); 57 void perf_test_join_vcpu_threads(int vcpus); 58 void perf_test_guest_code(uint32_t vcpu_id); 59 60 uint64_t perf_test_nested_pages(int nr_vcpus); 61 void perf_test_setup_nested(struct kvm_vm *vm, int nr_vcpus, struct kvm_vcpu *vcpus[]); 62 63 #endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */ 64
