test_util.h (4045B)
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 23static 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 36void print_skip(const char *fmt, ...) __attribute__((format(printf, 1, 2))); 37 38ssize_t test_write(int fd, const void *buf, size_t count); 39ssize_t test_read(int fd, void *buf, size_t count); 40int test_seq_read(const char *path, char **bufp, size_t *sizep); 41 42void 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 62size_t parse_size(const char *size); 63 64int64_t timespec_to_ns(struct timespec ts); 65struct timespec timespec_add_ns(struct timespec ts, int64_t ns); 66struct timespec timespec_add(struct timespec ts1, struct timespec ts2); 67struct timespec timespec_sub(struct timespec ts1, struct timespec ts2); 68struct timespec timespec_elapsed(struct timespec start); 69struct timespec timespec_div(struct timespec ts, int divisor); 70 71enum 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 95struct vm_mem_backing_src_alias { 96 const char *name; 97 uint32_t flag; 98}; 99 100#define MIN_RUN_DELAY_NS 200000UL 101 102bool thp_configured(void); 103size_t get_trans_hugepagesz(void); 104size_t get_def_hugetlb_pagesz(void); 105const struct vm_mem_backing_src_alias *vm_mem_backing_src_alias(uint32_t i); 106size_t get_backing_src_pagesz(uint32_t i); 107bool is_backing_src_hugetlb(uint32_t i); 108void backing_src_help(const char *flag); 109enum vm_mem_backing_src_type parse_backing_src_type(const char *type_name); 110long get_run_delay(void); 111 112/* 113 * Whether or not the given source type is shared memory (as opposed to 114 * anonymous). 115 */ 116static inline bool backing_src_is_shared(enum vm_mem_backing_src_type t) 117{ 118 return vm_mem_backing_src_alias(t)->flag & MAP_SHARED; 119} 120 121/* Aligns x up to the next multiple of size. Size must be a power of 2. */ 122static inline uint64_t align_up(uint64_t x, uint64_t size) 123{ 124 uint64_t mask = size - 1; 125 126 TEST_ASSERT(size != 0 && !(size & (size - 1)), 127 "size not a power of 2: %lu", size); 128 return ((x + mask) & ~mask); 129} 130 131static inline uint64_t align_down(uint64_t x, uint64_t size) 132{ 133 uint64_t x_aligned_up = align_up(x, size); 134 135 if (x == x_aligned_up) 136 return x; 137 else 138 return x_aligned_up - size; 139} 140 141static inline void *align_ptr_up(void *x, size_t size) 142{ 143 return (void *)align_up((unsigned long)x, size); 144} 145 146#endif /* SELFTEST_KVM_TEST_UTIL_H */