1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * tools/testing/selftests/kvm/include/test_util.h 4 * 5 * Copyright (C) 2018, Google LLC. 6 */ 7 8 #ifndef SELFTEST_KVM_TEST_UTIL_H 9 #define SELFTEST_KVM_TEST_UTIL_H 10 11 #include <stdlib.h> 12 #include <stdarg.h> 13 #include <stdbool.h> 14 #include <stdio.h> 15 #include <string.h> 16 #include <inttypes.h> 17 #include <errno.h> 18 #include <unistd.h> 19 #include <fcntl.h> 20 #include <sys/mman.h> 21 #include "kselftest.h" 22 23 static inline int _no_printf(const char *format, ...) { return 0; } 24 25 #ifdef DEBUG 26 #define pr_debug(...) printf(__VA_ARGS__) 27 #else 28 #define pr_debug(...) _no_printf(__VA_ARGS__) 29 #endif 30 #ifndef QUIET 31 #define pr_info(...) printf(__VA_ARGS__) 32 #else 33 #define pr_info(...) _no_printf(__VA_ARGS__) 34 #endif 35 36 void print_skip(const char *fmt, ...) __attribute__((format(printf, 1, 2))); 37 38 ssize_t test_write(int fd, const void *buf, size_t count); 39 ssize_t test_read(int fd, void *buf, size_t count); 40 int test_seq_read(const char *path, char **bufp, size_t *sizep); 41 42 void test_assert(bool exp, const char *exp_str, 43 const char *file, unsigned int line, const char *fmt, ...) 44 __attribute__((format(printf, 5, 6))); 45 46 #define TEST_ASSERT(e, fmt, ...) \ 47 test_assert((e), #e, __FILE__, __LINE__, fmt, ##__VA_ARGS__) 48 49 #define ASSERT_EQ(a, b) do { \ 50 typeof(a) __a = (a); \ 51 typeof(b) __b = (b); \ 52 TEST_ASSERT(__a == __b, \ 53 "ASSERT_EQ(%s, %s) failed.\n" \ 54 "\t%s is %#lx\n" \ 55 "\t%s is %#lx", \ 56 #a, #b, #a, (unsigned long) __a, #b, (unsigned long) __b); \ 57 } while (0) 58 59 #define TEST_FAIL(fmt, ...) \ 60 TEST_ASSERT(false, fmt, ##__VA_ARGS__) 61 62 size_t parse_size(const char *size); 63 64 int64_t timespec_to_ns(struct timespec ts); 65 struct timespec timespec_add_ns(struct timespec ts, int64_t ns); 66 struct timespec timespec_add(struct timespec ts1, struct timespec ts2); 67 struct timespec timespec_sub(struct timespec ts1, struct timespec ts2); 68 struct timespec timespec_elapsed(struct timespec start); 69 struct timespec timespec_div(struct timespec ts, int divisor); 70 71 enum vm_mem_backing_src_type { 72 VM_MEM_SRC_ANONYMOUS, 73 VM_MEM_SRC_ANONYMOUS_THP, 74 VM_MEM_SRC_ANONYMOUS_HUGETLB, 75 VM_MEM_SRC_ANONYMOUS_HUGETLB_16KB, 76 VM_MEM_SRC_ANONYMOUS_HUGETLB_64KB, 77 VM_MEM_SRC_ANONYMOUS_HUGETLB_512KB, 78 VM_MEM_SRC_ANONYMOUS_HUGETLB_1MB, 79 VM_MEM_SRC_ANONYMOUS_HUGETLB_2MB, 80 VM_MEM_SRC_ANONYMOUS_HUGETLB_8MB, 81 VM_MEM_SRC_ANONYMOUS_HUGETLB_16MB, 82 VM_MEM_SRC_ANONYMOUS_HUGETLB_32MB, 83 VM_MEM_SRC_ANONYMOUS_HUGETLB_256MB, 84 VM_MEM_SRC_ANONYMOUS_HUGETLB_512MB, 85 VM_MEM_SRC_ANONYMOUS_HUGETLB_1GB, 86 VM_MEM_SRC_ANONYMOUS_HUGETLB_2GB, 87 VM_MEM_SRC_ANONYMOUS_HUGETLB_16GB, 88 VM_MEM_SRC_SHMEM, 89 VM_MEM_SRC_SHARED_HUGETLB, 90 NUM_SRC_TYPES, 91 }; 92 93 #define DEFAULT_VM_MEM_SRC VM_MEM_SRC_ANONYMOUS 94 95 struct vm_mem_backing_src_alias { 96 const char *name; 97 uint32_t flag; 98 }; 99 100 #define MIN_RUN_DELAY_NS 200000UL 101 102 bool thp_configured(void); 103 size_t get_trans_hugepagesz(void); 104 size_t get_def_hugetlb_pagesz(void); 105 const struct vm_mem_backing_src_alias *vm_mem_backing_src_alias(uint32_t i); 106 size_t get_backing_src_pagesz(uint32_t i); 107 void backing_src_help(const char *flag); 108 enum vm_mem_backing_src_type parse_backing_src_type(const char *type_name); 109 long get_run_delay(void); 110 111 /* 112 * Whether or not the given source type is shared memory (as opposed to 113 * anonymous). 114 */ 115 static inline bool backing_src_is_shared(enum vm_mem_backing_src_type t) 116 { 117 return vm_mem_backing_src_alias(t)->flag & MAP_SHARED; 118 } 119 120 #endif /* SELFTEST_KVM_TEST_UTIL_H */ 121