2 * Test cases for printf facility.
5 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7 #include <linux/bitmap.h>
8 #include <linux/init.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/printk.h>
12 #include <linux/slab.h>
13 #include <linux/string.h>
15 #include "../tools/testing/selftests/kselftest_module.h"
17 static unsigned total_tests __initdata;
18 static unsigned failed_tests __initdata;
20 static char pbl_buffer[PAGE_SIZE] __initdata;
24 __check_eq_uint(const char *srcfile, unsigned int line,
25 const unsigned int exp_uint, unsigned int x)
28 pr_err("[%s:%u] expected %u, got %u\n",
29 srcfile, line, exp_uint, x);
37 __check_eq_bitmap(const char *srcfile, unsigned int line,
38 const unsigned long *exp_bmap, const unsigned long *bmap,
41 if (!bitmap_equal(exp_bmap, bmap, nbits)) {
42 pr_warn("[%s:%u] bitmaps contents differ: expected \"%*pbl\", got \"%*pbl\"\n",
44 nbits, exp_bmap, nbits, bmap);
51 __check_eq_pbl(const char *srcfile, unsigned int line,
52 const char *expected_pbl,
53 const unsigned long *bitmap, unsigned int nbits)
55 snprintf(pbl_buffer, sizeof(pbl_buffer), "%*pbl", nbits, bitmap);
56 if (strcmp(expected_pbl, pbl_buffer)) {
57 pr_warn("[%s:%u] expected \"%s\", got \"%s\"\n",
59 expected_pbl, pbl_buffer);
66 __check_eq_u32_array(const char *srcfile, unsigned int line,
67 const u32 *exp_arr, unsigned int exp_len,
68 const u32 *arr, unsigned int len) __used;
70 __check_eq_u32_array(const char *srcfile, unsigned int line,
71 const u32 *exp_arr, unsigned int exp_len,
72 const u32 *arr, unsigned int len)
75 pr_warn("[%s:%u] array length differ: expected %u, got %u\n",
81 if (memcmp(exp_arr, arr, len*sizeof(*arr))) {
82 pr_warn("[%s:%u] array contents differ\n", srcfile, line);
83 print_hex_dump(KERN_WARNING, " exp: ", DUMP_PREFIX_OFFSET,
84 32, 4, exp_arr, exp_len*sizeof(*exp_arr), false);
85 print_hex_dump(KERN_WARNING, " got: ", DUMP_PREFIX_OFFSET,
86 32, 4, arr, len*sizeof(*arr), false);
93 #define __expect_eq(suffix, ...) \
97 if (!__check_eq_ ## suffix(__FILE__, __LINE__, \
105 #define expect_eq_uint(...) __expect_eq(uint, ##__VA_ARGS__)
106 #define expect_eq_bitmap(...) __expect_eq(bitmap, ##__VA_ARGS__)
107 #define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__)
108 #define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__)
110 static void __init test_zero_clear(void)
112 DECLARE_BITMAP(bmap, 1024);
114 /* Known way to set all bits */
115 memset(bmap, 0xff, 128);
117 expect_eq_pbl("0-22", bmap, 23);
118 expect_eq_pbl("0-1023", bmap, 1024);
120 /* single-word bitmaps */
121 bitmap_clear(bmap, 0, 9);
122 expect_eq_pbl("9-1023", bmap, 1024);
124 bitmap_zero(bmap, 35);
125 expect_eq_pbl("64-1023", bmap, 1024);
127 /* cross boundaries operations */
128 bitmap_clear(bmap, 79, 19);
129 expect_eq_pbl("64-78,98-1023", bmap, 1024);
131 bitmap_zero(bmap, 115);
132 expect_eq_pbl("128-1023", bmap, 1024);
134 /* Zeroing entire area */
135 bitmap_zero(bmap, 1024);
136 expect_eq_pbl("", bmap, 1024);
139 static void __init test_fill_set(void)
141 DECLARE_BITMAP(bmap, 1024);
143 /* Known way to clear all bits */
144 memset(bmap, 0x00, 128);
146 expect_eq_pbl("", bmap, 23);
147 expect_eq_pbl("", bmap, 1024);
149 /* single-word bitmaps */
150 bitmap_set(bmap, 0, 9);
151 expect_eq_pbl("0-8", bmap, 1024);
153 bitmap_fill(bmap, 35);
154 expect_eq_pbl("0-63", bmap, 1024);
156 /* cross boundaries operations */
157 bitmap_set(bmap, 79, 19);
158 expect_eq_pbl("0-63,79-97", bmap, 1024);
160 bitmap_fill(bmap, 115);
161 expect_eq_pbl("0-127", bmap, 1024);
163 /* Zeroing entire area */
164 bitmap_fill(bmap, 1024);
165 expect_eq_pbl("0-1023", bmap, 1024);
168 static void __init test_copy(void)
170 DECLARE_BITMAP(bmap1, 1024);
171 DECLARE_BITMAP(bmap2, 1024);
173 bitmap_zero(bmap1, 1024);
174 bitmap_zero(bmap2, 1024);
176 /* single-word bitmaps */
177 bitmap_set(bmap1, 0, 19);
178 bitmap_copy(bmap2, bmap1, 23);
179 expect_eq_pbl("0-18", bmap2, 1024);
181 bitmap_set(bmap2, 0, 23);
182 bitmap_copy(bmap2, bmap1, 23);
183 expect_eq_pbl("0-18", bmap2, 1024);
185 /* multi-word bitmaps */
186 bitmap_set(bmap1, 0, 109);
187 bitmap_copy(bmap2, bmap1, 1024);
188 expect_eq_pbl("0-108", bmap2, 1024);
190 bitmap_fill(bmap2, 1024);
191 bitmap_copy(bmap2, bmap1, 1024);
192 expect_eq_pbl("0-108", bmap2, 1024);
194 /* the following tests assume a 32- or 64-bit arch (even 128b
198 bitmap_fill(bmap2, 1024);
199 bitmap_copy(bmap2, bmap1, 109); /* ... but 0-padded til word length */
200 expect_eq_pbl("0-108,128-1023", bmap2, 1024);
202 bitmap_fill(bmap2, 1024);
203 bitmap_copy(bmap2, bmap1, 97); /* ... but aligned on word length */
204 expect_eq_pbl("0-108,128-1023", bmap2, 1024);
207 #define PARSE_TIME 0x1
209 struct test_bitmap_parselist{
212 const unsigned long *expected;
217 static const unsigned long exp[] __initconst = {
220 BITMAP_FROM_U64(0x0000ffff),
221 BITMAP_FROM_U64(0xffff0000),
222 BITMAP_FROM_U64(0x55555555),
223 BITMAP_FROM_U64(0xaaaaaaaa),
224 BITMAP_FROM_U64(0x11111111),
225 BITMAP_FROM_U64(0x22222222),
226 BITMAP_FROM_U64(0xffffffff),
227 BITMAP_FROM_U64(0xfffffffe),
228 BITMAP_FROM_U64(0x3333333311111111ULL),
229 BITMAP_FROM_U64(0xffffffff77777777ULL)
232 static const unsigned long exp2[] __initconst = {
233 BITMAP_FROM_U64(0x3333333311111111ULL),
234 BITMAP_FROM_U64(0xffffffff77777777ULL)
237 static const struct test_bitmap_parselist parselist_tests[] __initconst = {
238 #define step (sizeof(u64) / sizeof(unsigned long))
240 {0, "0", &exp[0], 8, 0},
241 {0, "1", &exp[1 * step], 8, 0},
242 {0, "0-15", &exp[2 * step], 32, 0},
243 {0, "16-31", &exp[3 * step], 32, 0},
244 {0, "0-31:1/2", &exp[4 * step], 32, 0},
245 {0, "1-31:1/2", &exp[5 * step], 32, 0},
246 {0, "0-31:1/4", &exp[6 * step], 32, 0},
247 {0, "1-31:1/4", &exp[7 * step], 32, 0},
248 {0, "0-31:4/4", &exp[8 * step], 32, 0},
249 {0, "1-31:4/4", &exp[9 * step], 32, 0},
250 {0, "0-31:1/4,32-63:2/4", &exp[10 * step], 64, 0},
251 {0, "0-31:3/4,32-63:4/4", &exp[11 * step], 64, 0},
253 {0, "0-31:1/4,32-63:2/4,64-95:3/4,96-127:4/4", exp2, 128, 0},
255 {0, "0-2047:128/256", NULL, 2048, PARSE_TIME},
257 {-EINVAL, "-1", NULL, 8, 0},
258 {-EINVAL, "-0", NULL, 8, 0},
259 {-EINVAL, "10-1", NULL, 8, 0},
260 {-EINVAL, "0-31:", NULL, 8, 0},
261 {-EINVAL, "0-31:0", NULL, 8, 0},
262 {-EINVAL, "0-31:0/0", NULL, 8, 0},
263 {-EINVAL, "0-31:1/0", NULL, 8, 0},
264 {-EINVAL, "0-31:10/1", NULL, 8, 0},
267 static void __init test_bitmap_parselist(void)
272 DECLARE_BITMAP(bmap, 2048);
274 for (i = 0; i < ARRAY_SIZE(parselist_tests); i++) {
275 #define ptest parselist_tests[i]
278 err = bitmap_parselist(ptest.in, bmap, ptest.nbits);
279 time = ktime_get() - time;
281 if (err != ptest.errno) {
282 pr_err("test %d: input is %s, errno is %d, expected %d\n",
283 i, ptest.in, err, ptest.errno);
287 if (!err && ptest.expected
288 && !__bitmap_equal(bmap, ptest.expected, ptest.nbits)) {
289 pr_err("test %d: input is %s, result is 0x%lx, expected 0x%lx\n",
290 i, ptest.in, bmap[0], *ptest.expected);
294 if (ptest.flags & PARSE_TIME)
295 pr_err("test %d: input is '%s' OK, Time: %llu\n",
300 #define EXP_BYTES (sizeof(exp) * 8)
302 static void __init test_bitmap_arr32(void)
304 unsigned int nbits, next_bit;
305 u32 arr[sizeof(exp) / 4];
306 DECLARE_BITMAP(bmap2, EXP_BYTES);
308 memset(arr, 0xa5, sizeof(arr));
310 for (nbits = 0; nbits < EXP_BYTES; ++nbits) {
311 bitmap_to_arr32(arr, exp, nbits);
312 bitmap_from_arr32(bmap2, arr, nbits);
313 expect_eq_bitmap(bmap2, exp, nbits);
315 next_bit = find_next_bit(bmap2,
316 round_up(nbits, BITS_PER_LONG), nbits);
317 if (next_bit < round_up(nbits, BITS_PER_LONG))
318 pr_err("bitmap_copy_arr32(nbits == %d:"
319 " tail is not safely cleared: %d\n",
322 if (nbits < EXP_BYTES - 32)
323 expect_eq_uint(arr[DIV_ROUND_UP(nbits, 32)],
328 static void noinline __init test_mem_optimisations(void)
330 DECLARE_BITMAP(bmap1, 1024);
331 DECLARE_BITMAP(bmap2, 1024);
332 unsigned int start, nbits;
334 for (start = 0; start < 1024; start += 8) {
335 for (nbits = 0; nbits < 1024 - start; nbits += 8) {
336 memset(bmap1, 0x5a, sizeof(bmap1));
337 memset(bmap2, 0x5a, sizeof(bmap2));
339 bitmap_set(bmap1, start, nbits);
340 __bitmap_set(bmap2, start, nbits);
341 if (!bitmap_equal(bmap1, bmap2, 1024)) {
342 printk("set not equal %d %d\n", start, nbits);
345 if (!__bitmap_equal(bmap1, bmap2, 1024)) {
346 printk("set not __equal %d %d\n", start, nbits);
350 bitmap_clear(bmap1, start, nbits);
351 __bitmap_clear(bmap2, start, nbits);
352 if (!bitmap_equal(bmap1, bmap2, 1024)) {
353 printk("clear not equal %d %d\n", start, nbits);
356 if (!__bitmap_equal(bmap1, bmap2, 1024)) {
357 printk("clear not __equal %d %d\n", start,
365 static void __init selftest(void)
371 test_bitmap_parselist();
372 test_mem_optimisations();
375 KSTM_MODULE_LOADERS(test_bitmap);
376 MODULE_AUTHOR("david decotigny <david.decotigny@googlers.com>");
377 MODULE_LICENSE("GPL");