Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 */