/* SPDX-License-Identifier: GPL-2.0-only *//* * tools/testing/selftests/kvm/include/test_util.h * * Copyright (C) 2018, Google LLC. */ #ifndef SELFTEST_KVM_TEST_UTIL_H#define SELFTEST_KVM_TEST_UTIL_H #include <setjmp.h>#include <signal.h>#include <stdlib.h>#include <stdarg.h>#include <stdbool.h>#include <stdio.h>#include <string.h>#include <inttypes.h>#include <errno.h>#include <unistd.h>#include <fcntl.h>#include "kselftest.h" #include <linux/mman.h>#include <linux/types.h>#include <linux/stringify.h> #define msecs_to_usecs(msec)    ((msec) * 1000ULL) static inline __printf(1, 2) int _no_printf(const char *format, ...) { return 0; } #ifdef DEBUG#define pr_debug(...) printf(__VA_ARGS__)#else#define pr_debug(...) _no_printf(__VA_ARGS__)#endif#ifndef QUIET#define pr_info(...) printf(__VA_ARGS__)#else#define pr_info(...) _no_printf(__VA_ARGS__)#endif void __printf(1, 2) print_skip(const char *fmt, ...);#define __TEST_REQUIRE(f, fmt, ...)				\do {								\	if (!(f))						\		ksft_exit_skip("- " fmt "\n", ##__VA_ARGS__);	\} while (0) #define TEST_REQUIRE(f) __TEST_REQUIRE(f, "Requirement not met: %s", #f) ssize_t test_write(int fd, const void *buf, size_t count);ssize_t test_read(int fd, void *buf, size_t count);int test_seq_read(const char *path, char **bufp, size_t *sizep); void __printf(5, 6) test_assert(bool exp, const char *exp_str,				const char *file, unsigned int line,				const char *fmt, ...); #define TEST_ASSERT(e, fmt, ...) \	test_assert((e), #e, __FILE__, __LINE__, fmt, ##__VA_ARGS__) #define TEST_ASSERT_EQ(a, b)						\do {									\	typeof(a) __a = (a);						\	typeof(b) __b = (b);						\	test_assert(__a == __b, #a " == " #b, __FILE__, __LINE__,	\		    "%#lx != %#lx (%s != %s)",				\		    (unsigned long)(__a), (unsigned long)(__b), #a, #b);\} while (0) #define TEST_ASSERT_KVM_EXIT_REASON(vcpu, expected) do {		\	__u32 exit_reason = (vcpu)->run->exit_reason;			\									\	TEST_ASSERT(exit_reason == (expected),				\		    "Wanted KVM exit reason: %u (%s), got: %u (%s)",    \		    (expected), exit_reason_str((expected)),		\		    exit_reason, exit_reason_str(exit_reason));		\} while (0) #define TEST_FAIL(fmt, ...) do { \	TEST_ASSERT(false, fmt, ##__VA_ARGS__); \	__builtin_unreachable(); \} while (0) extern sigjmp_buf expect_sigbus_jmpbuf;void expect_sigbus_handler(int signum); #define TEST_EXPECT_SIGBUS(action)						\do {										\	struct sigaction sa_old, sa_new = {					\		.sa_handler = expect_sigbus_handler,				\	};									\										\	sigaction(SIGBUS, &sa_new, &sa_old);					\	if (sigsetjmp(expect_sigbus_jmpbuf, 1) == 0) {				\		action;								\		TEST_FAIL("'%s' should have triggered SIGBUS", #action);	\	}									\	sigaction(SIGBUS, &sa_old, NULL);					\} while (0) size_t parse_size(const char *size); s64 timespec_to_ns(struct timespec ts);struct timespec timespec_add_ns(struct timespec ts, s64 ns);struct timespec timespec_add(struct timespec ts1, struct timespec ts2);struct timespec timespec_sub(struct timespec ts1, struct timespec ts2);struct timespec timespec_elapsed(struct timespec start);struct timespec timespec_div(struct timespec ts, int divisor); struct kvm_random_state {	u32 seed;}; extern u32 kvm_random_seed;extern struct kvm_random_state kvm_rng; struct kvm_random_state new_kvm_random_state(u32 seed);u32 kvm_random_u32(struct kvm_random_state *state); static inline bool __kvm_random_bool(struct kvm_random_state *state,				       u8 percent){	return (kvm_random_u32(state) % 100) < percent;} static inline bool kvm_random_bool(struct kvm_random_state *state){	return __kvm_random_bool(state, 50);} static inline u64 kvm_random_u64(struct kvm_random_state *state){	return ((u64)kvm_random_u32(state) << 32) | kvm_random_u32(state);} u32 kvm_random_u32_in_range(struct kvm_random_state *state, u32 min, u32 max);u64 kvm_random_u64_in_range(struct kvm_random_state *state, u64 min, u64 max); enum vm_mem_backing_src_type {	VM_MEM_SRC_ANONYMOUS,	VM_MEM_SRC_ANONYMOUS_THP,	VM_MEM_SRC_ANONYMOUS_HUGETLB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_16KB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_64KB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_512KB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_1MB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_2MB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_8MB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_16MB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_32MB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_256MB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_512MB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_1GB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_2GB,	VM_MEM_SRC_ANONYMOUS_HUGETLB_16GB,	VM_MEM_SRC_SHMEM,	VM_MEM_SRC_SHARED_HUGETLB,	NUM_SRC_TYPES,}; #define DEFAULT_VM_MEM_SRC VM_MEM_SRC_ANONYMOUS struct vm_mem_backing_src_alias {	const char *name;	u32 flag;}; #define MIN_RUN_DELAY_NS	200000UL bool thp_configured(void);size_t get_trans_hugepagesz(void);size_t get_def_hugetlb_pagesz(void);const struct vm_mem_backing_src_alias *vm_mem_backing_src_alias(u32 i);size_t get_backing_src_pagesz(u32 i);bool is_backing_src_hugetlb(u32 i);void backing_src_help(const char *flag);enum vm_mem_backing_src_type parse_backing_src_type(const char *type_name);long get_run_delay(void);bool is_numa_balancing_enabled(void); /* * Whether or not the given source type is shared memory (as opposed to * anonymous). */static inline bool backing_src_is_shared(enum vm_mem_backing_src_type t){	return vm_mem_backing_src_alias(t)->flag & MAP_SHARED;} static inline bool backing_src_can_be_huge(enum vm_mem_backing_src_type t){	return t != VM_MEM_SRC_ANONYMOUS && t != VM_MEM_SRC_SHMEM;} /* Aligns x up to the next multiple of size. Size must be a power of 2. */static inline u64 align_up(u64 x, u64 size){	u64 mask = size - 1; 	TEST_ASSERT(size != 0 && !(size & (size - 1)),		    "size not a power of 2: %lu", size);	return ((x + mask) & ~mask);} static inline u64 align_down(u64 x, u64 size){	u64 x_aligned_up = align_up(x, size); 	if (x == x_aligned_up)		return x;	else		return x_aligned_up - size;} static inline void *align_ptr_up(void *x, size_t size){	return (void *)align_up((unsigned long)x, size);} int atoi_paranoid(const char *num_str); static inline u32 atoi_positive(const char *name, const char *num_str){	int num = atoi_paranoid(num_str); 	TEST_ASSERT(num > 0, "%s must be greater than 0, got '%s'", name, num_str);	return num;} static inline u32 atoi_non_negative(const char *name, const char *num_str){	int num = atoi_paranoid(num_str); 	TEST_ASSERT(num >= 0, "%s must be non-negative, got '%s'", name, num_str);	return num;} int guest_vsnprintf(char *buf, int n, const char *fmt, va_list args);__printf(3, 4) int guest_snprintf(char *buf, int n, const char *fmt, ...); char *strdup_printf(const char *fmt, ...) __attribute__((format(printf, 1, 2), nonnull(1))); char *sys_get_cur_clocksource(void); #endif /* SELFTEST_KVM_TEST_UTIL_H */