projects / mirror_ubuntu-kernels.git / blame
| Commit | Line | Data |
|---|---|---|
| 09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 5fd003f5 | 2 | /* |
| 780ff33b | 3 | * Test cases for bitmap API. |
| 5fd003f5 DD |
4 | */ |
| 5 | ||
| 6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
| 7 | ||
| 8 | #include <linux/bitmap.h> | |
| 9 | #include <linux/init.h> | |
| 10 | #include <linux/kernel.h> | |
| 11 | #include <linux/module.h> | |
| 12 | #include <linux/printk.h> | |
| 13 | #include <linux/slab.h> | |
| 14 | #include <linux/string.h> | |
| 6ea86bdf | 15 | #include <linux/uaccess.h> |
| 5fd003f5 | 16 | |
| 6b1a4d5b TH |
17 | #include "../tools/testing/selftests/kselftest_module.h" |
| 18 | ||
| 4e89a787 | 19 | KSTM_MODULE_GLOBALS(); |
| 5fd003f5 DD |
20 | |
| 21 | static char pbl_buffer[PAGE_SIZE] __initdata; | |
| 291f93ca | 22 | static char print_buf[PAGE_SIZE * 2] __initdata; |
| 5fd003f5 | 23 | |
| c21dd8a7 AS |
24 | static const unsigned long exp1[] __initconst = { |
| 25 | BITMAP_FROM_U64(1), | |
| 26 | BITMAP_FROM_U64(2), | |
| 27 | BITMAP_FROM_U64(0x0000ffff), | |
| 28 | BITMAP_FROM_U64(0xffff0000), | |
| 29 | BITMAP_FROM_U64(0x55555555), | |
| 30 | BITMAP_FROM_U64(0xaaaaaaaa), | |
| 31 | BITMAP_FROM_U64(0x11111111), | |
| 32 | BITMAP_FROM_U64(0x22222222), | |
| 33 | BITMAP_FROM_U64(0xffffffff), | |
| 34 | BITMAP_FROM_U64(0xfffffffe), | |
| 35 | BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 36 | BITMAP_FROM_U64(0xffffffff77777777ULL), | |
| 37 | BITMAP_FROM_U64(0), | |
| 97330db3 PG |
38 | BITMAP_FROM_U64(0x00008000), |
| 39 | BITMAP_FROM_U64(0x80000000), | |
| c21dd8a7 AS |
40 | }; |
| 41 | ||
| 42 | static const unsigned long exp2[] __initconst = { | |
| 43 | BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 44 | BITMAP_FROM_U64(0xffffffff77777777ULL), | |
| 45 | }; | |
| 5fd003f5 | 46 | |
| 30544ed5 AS |
47 | /* Fibonacci sequence */ |
| 48 | static const unsigned long exp2_to_exp3_mask[] __initconst = { | |
| 49 | BITMAP_FROM_U64(0x008000020020212eULL), | |
| 50 | }; | |
| 51 | /* exp3_0_1 = (exp2[0] & ~exp2_to_exp3_mask) | (exp2[1] & exp2_to_exp3_mask) */ | |
| 52 | static const unsigned long exp3_0_1[] __initconst = { | |
| 53 | BITMAP_FROM_U64(0x33b3333311313137ULL), | |
| 54 | }; | |
| 55 | /* exp3_1_0 = (exp2[1] & ~exp2_to_exp3_mask) | (exp2[0] & exp2_to_exp3_mask) */ | |
| 56 | static const unsigned long exp3_1_0[] __initconst = { | |
| 57 | BITMAP_FROM_U64(0xff7fffff77575751ULL), | |
| 58 | }; | |
| 59 | ||
| 5fd003f5 DD |
60 | static bool __init |
| 61 | __check_eq_uint(const char *srcfile, unsigned int line, | |
| 62 | const unsigned int exp_uint, unsigned int x) | |
| 63 | { | |
| 64 | if (exp_uint != x) { | |
| 3aa56885 | 65 | pr_err("[%s:%u] expected %u, got %u\n", |
| 5fd003f5 DD |
66 | srcfile, line, exp_uint, x); |
| 67 | return false; | |
| 68 | } | |
| 69 | return true; | |
| 70 | } | |
| 71 | ||
| 72 | ||
| 73 | static bool __init | |
| 74 | __check_eq_bitmap(const char *srcfile, unsigned int line, | |
| 3aa56885 YN |
75 | const unsigned long *exp_bmap, const unsigned long *bmap, |
| 76 | unsigned int nbits) | |
| 5fd003f5 | 77 | { |
| 5fd003f5 DD |
78 | if (!bitmap_equal(exp_bmap, bmap, nbits)) { |
| 79 | pr_warn("[%s:%u] bitmaps contents differ: expected \"%*pbl\", got \"%*pbl\"\n", | |
| 80 | srcfile, line, | |
| 3aa56885 | 81 | nbits, exp_bmap, nbits, bmap); |
| 5fd003f5 DD |
82 | return false; |
| 83 | } | |
| 84 | return true; | |
| 85 | } | |
| 86 | ||
| 87 | static bool __init | |
| 88 | __check_eq_pbl(const char *srcfile, unsigned int line, | |
| 89 | const char *expected_pbl, | |
| 90 | const unsigned long *bitmap, unsigned int nbits) | |
| 91 | { | |
| 92 | snprintf(pbl_buffer, sizeof(pbl_buffer), "%*pbl", nbits, bitmap); | |
| 93 | if (strcmp(expected_pbl, pbl_buffer)) { | |
| 94 | pr_warn("[%s:%u] expected \"%s\", got \"%s\"\n", | |
| 95 | srcfile, line, | |
| 96 | expected_pbl, pbl_buffer); | |
| 97 | return false; | |
| 98 | } | |
| 99 | return true; | |
| 100 | } | |
| 101 | ||
| 3aa56885 YN |
102 | static bool __init |
| 103 | __check_eq_u32_array(const char *srcfile, unsigned int line, | |
| 104 | const u32 *exp_arr, unsigned int exp_len, | |
| 105 | const u32 *arr, unsigned int len) __used; | |
| 5fd003f5 DD |
106 | static bool __init |
| 107 | __check_eq_u32_array(const char *srcfile, unsigned int line, | |
| 108 | const u32 *exp_arr, unsigned int exp_len, | |
| 109 | const u32 *arr, unsigned int len) | |
| 110 | { | |
| 111 | if (exp_len != len) { | |
| 112 | pr_warn("[%s:%u] array length differ: expected %u, got %u\n", | |
| 113 | srcfile, line, | |
| 114 | exp_len, len); | |
| 115 | return false; | |
| 116 | } | |
| 117 | ||
| 118 | if (memcmp(exp_arr, arr, len*sizeof(*arr))) { | |
| 119 | pr_warn("[%s:%u] array contents differ\n", srcfile, line); | |
| 120 | print_hex_dump(KERN_WARNING, " exp: ", DUMP_PREFIX_OFFSET, | |
| 121 | 32, 4, exp_arr, exp_len*sizeof(*exp_arr), false); | |
| 122 | print_hex_dump(KERN_WARNING, " got: ", DUMP_PREFIX_OFFSET, | |
| 123 | 32, 4, arr, len*sizeof(*arr), false); | |
| 124 | return false; | |
| 125 | } | |
| 126 | ||
| 127 | return true; | |
| 128 | } | |
| 129 | ||
| e4aa168d WBG |
130 | static bool __init __check_eq_clump8(const char *srcfile, unsigned int line, |
| 131 | const unsigned int offset, | |
| 132 | const unsigned int size, | |
| 133 | const unsigned char *const clump_exp, | |
| 134 | const unsigned long *const clump) | |
| 135 | { | |
| 136 | unsigned long exp; | |
| 137 | ||
| 138 | if (offset >= size) { | |
| 139 | pr_warn("[%s:%u] bit offset for clump out-of-bounds: expected less than %u, got %u\n", | |
| 140 | srcfile, line, size, offset); | |
| 141 | return false; | |
| 142 | } | |
| 143 | ||
| 144 | exp = clump_exp[offset / 8]; | |
| 145 | if (!exp) { | |
| 146 | pr_warn("[%s:%u] bit offset for zero clump: expected nonzero clump, got bit offset %u with clump value 0", | |
| 147 | srcfile, line, offset); | |
| 148 | return false; | |
| 149 | } | |
| 150 | ||
| 151 | if (*clump != exp) { | |
| 152 | pr_warn("[%s:%u] expected clump value of 0x%lX, got clump value of 0x%lX", | |
| 153 | srcfile, line, exp, *clump); | |
| 154 | return false; | |
| 155 | } | |
| 156 | ||
| 157 | return true; | |
| 158 | } | |
| 159 | ||
| 291f93ca BS |
160 | static bool __init |
| 161 | __check_eq_str(const char *srcfile, unsigned int line, | |
| 162 | const char *exp_str, const char *str, | |
| 163 | unsigned int len) | |
| 164 | { | |
| 165 | bool eq; | |
| 166 | ||
| 167 | eq = strncmp(exp_str, str, len) == 0; | |
| 168 | if (!eq) | |
| 169 | pr_err("[%s:%u] expected %s, got %s\n", srcfile, line, exp_str, str); | |
| 170 | ||
| 171 | return eq; | |
| 172 | } | |
| 173 | ||
| 5fd003f5 DD |
174 | #define __expect_eq(suffix, ...) \ |
| 175 | ({ \ | |
| 176 | int result = 0; \ | |
| 177 | total_tests++; \ | |
| 178 | if (!__check_eq_ ## suffix(__FILE__, __LINE__, \ | |
| 179 | ##__VA_ARGS__)) { \ | |
| 180 | failed_tests++; \ | |
| 181 | result = 1; \ | |
| 182 | } \ | |
| 183 | result; \ | |
| 184 | }) | |
| 185 | ||
| 186 | #define expect_eq_uint(...) __expect_eq(uint, ##__VA_ARGS__) | |
| 187 | #define expect_eq_bitmap(...) __expect_eq(bitmap, ##__VA_ARGS__) | |
| 188 | #define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__) | |
| 189 | #define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__) | |
| e4aa168d | 190 | #define expect_eq_clump8(...) __expect_eq(clump8, ##__VA_ARGS__) |
| 291f93ca | 191 | #define expect_eq_str(...) __expect_eq(str, ##__VA_ARGS__) |
| 5fd003f5 | 192 | |
| ee3527bd AS |
193 | static void __init test_zero_clear(void) |
| 194 | { | |
| 195 | DECLARE_BITMAP(bmap, 1024); | |
| 196 | ||
| 197 | /* Known way to set all bits */ | |
| 198 | memset(bmap, 0xff, 128); | |
| 199 | ||
| 200 | expect_eq_pbl("0-22", bmap, 23); | |
| 201 | expect_eq_pbl("0-1023", bmap, 1024); | |
| 202 | ||
| 203 | /* single-word bitmaps */ | |
| 204 | bitmap_clear(bmap, 0, 9); | |
| 205 | expect_eq_pbl("9-1023", bmap, 1024); | |
| 206 | ||
| 207 | bitmap_zero(bmap, 35); | |
| 208 | expect_eq_pbl("64-1023", bmap, 1024); | |
| 209 | ||
| 210 | /* cross boundaries operations */ | |
| 211 | bitmap_clear(bmap, 79, 19); | |
| 212 | expect_eq_pbl("64-78,98-1023", bmap, 1024); | |
| 213 | ||
| 214 | bitmap_zero(bmap, 115); | |
| 215 | expect_eq_pbl("128-1023", bmap, 1024); | |
| 216 | ||
| 217 | /* Zeroing entire area */ | |
| 218 | bitmap_zero(bmap, 1024); | |
| 219 | expect_eq_pbl("", bmap, 1024); | |
| 220 | } | |
| 221 | ||
| 978f369c AS |
222 | static void __init test_fill_set(void) |
| 223 | { | |
| 224 | DECLARE_BITMAP(bmap, 1024); | |
| 225 | ||
| 226 | /* Known way to clear all bits */ | |
| 227 | memset(bmap, 0x00, 128); | |
| 228 | ||
| 229 | expect_eq_pbl("", bmap, 23); | |
| 230 | expect_eq_pbl("", bmap, 1024); | |
| 231 | ||
| 232 | /* single-word bitmaps */ | |
| 233 | bitmap_set(bmap, 0, 9); | |
| 234 | expect_eq_pbl("0-8", bmap, 1024); | |
| 235 | ||
| 236 | bitmap_fill(bmap, 35); | |
| 237 | expect_eq_pbl("0-63", bmap, 1024); | |
| 238 | ||
| 239 | /* cross boundaries operations */ | |
| 240 | bitmap_set(bmap, 79, 19); | |
| 241 | expect_eq_pbl("0-63,79-97", bmap, 1024); | |
| 242 | ||
| 243 | bitmap_fill(bmap, 115); | |
| 244 | expect_eq_pbl("0-127", bmap, 1024); | |
| 245 | ||
| 246 | /* Zeroing entire area */ | |
| 247 | bitmap_fill(bmap, 1024); | |
| 248 | expect_eq_pbl("0-1023", bmap, 1024); | |
| 249 | } | |
| 250 | ||
| fe81814c | 251 | static void __init test_copy(void) |
| 5fd003f5 DD |
252 | { |
| 253 | DECLARE_BITMAP(bmap1, 1024); | |
| 254 | DECLARE_BITMAP(bmap2, 1024); | |
| 255 | ||
| 256 | bitmap_zero(bmap1, 1024); | |
| 257 | bitmap_zero(bmap2, 1024); | |
| 258 | ||
| 259 | /* single-word bitmaps */ | |
| fe81814c | 260 | bitmap_set(bmap1, 0, 19); |
| 5fd003f5 DD |
261 | bitmap_copy(bmap2, bmap1, 23); |
| 262 | expect_eq_pbl("0-18", bmap2, 1024); | |
| 263 | ||
| fe81814c | 264 | bitmap_set(bmap2, 0, 23); |
| 5fd003f5 DD |
265 | bitmap_copy(bmap2, bmap1, 23); |
| 266 | expect_eq_pbl("0-18", bmap2, 1024); | |
| 267 | ||
| 5fd003f5 | 268 | /* multi-word bitmaps */ |
| fe81814c | 269 | bitmap_set(bmap1, 0, 109); |
| 5fd003f5 DD |
270 | bitmap_copy(bmap2, bmap1, 1024); |
| 271 | expect_eq_pbl("0-108", bmap2, 1024); | |
| 272 | ||
| 273 | bitmap_fill(bmap2, 1024); | |
| 5fd003f5 DD |
274 | bitmap_copy(bmap2, bmap1, 1024); |
| 275 | expect_eq_pbl("0-108", bmap2, 1024); | |
| 276 | ||
| 277 | /* the following tests assume a 32- or 64-bit arch (even 128b | |
| 278 | * if we care) | |
| 279 | */ | |
| 280 | ||
| 281 | bitmap_fill(bmap2, 1024); | |
| 282 | bitmap_copy(bmap2, bmap1, 109); /* ... but 0-padded til word length */ | |
| 283 | expect_eq_pbl("0-108,128-1023", bmap2, 1024); | |
| 284 | ||
| 285 | bitmap_fill(bmap2, 1024); | |
| 286 | bitmap_copy(bmap2, bmap1, 97); /* ... but aligned on word length */ | |
| 287 | expect_eq_pbl("0-108,128-1023", bmap2, 1024); | |
| 5fd003f5 DD |
288 | } |
| 289 | ||
| 30544ed5 AS |
290 | #define EXP2_IN_BITS (sizeof(exp2) * 8) |
| 291 | ||
| 292 | static void __init test_replace(void) | |
| 293 | { | |
| 294 | unsigned int nbits = 64; | |
| 69334ca5 | 295 | unsigned int nlongs = DIV_ROUND_UP(nbits, BITS_PER_LONG); |
| 30544ed5 AS |
296 | DECLARE_BITMAP(bmap, 1024); |
| 297 | ||
| caa7f776 AS |
298 | BUILD_BUG_ON(EXP2_IN_BITS < nbits * 2); |
| 299 | ||
| 30544ed5 | 300 | bitmap_zero(bmap, 1024); |
| 69334ca5 | 301 | bitmap_replace(bmap, &exp2[0 * nlongs], &exp2[1 * nlongs], exp2_to_exp3_mask, nbits); |
| 30544ed5 AS |
302 | expect_eq_bitmap(bmap, exp3_0_1, nbits); |
| 303 | ||
| 304 | bitmap_zero(bmap, 1024); | |
| 69334ca5 | 305 | bitmap_replace(bmap, &exp2[1 * nlongs], &exp2[0 * nlongs], exp2_to_exp3_mask, nbits); |
| 30544ed5 AS |
306 | expect_eq_bitmap(bmap, exp3_1_0, nbits); |
| 307 | ||
| 308 | bitmap_fill(bmap, 1024); | |
| 69334ca5 | 309 | bitmap_replace(bmap, &exp2[0 * nlongs], &exp2[1 * nlongs], exp2_to_exp3_mask, nbits); |
| 30544ed5 AS |
310 | expect_eq_bitmap(bmap, exp3_0_1, nbits); |
| 311 | ||
| 312 | bitmap_fill(bmap, 1024); | |
| 69334ca5 | 313 | bitmap_replace(bmap, &exp2[1 * nlongs], &exp2[0 * nlongs], exp2_to_exp3_mask, nbits); |
| 30544ed5 AS |
314 | expect_eq_bitmap(bmap, exp3_1_0, nbits); |
| 315 | } | |
| 316 | ||
| 7eb2e94e YN |
317 | #define PARSE_TIME 0x1 |
| 318 | #define NO_LEN 0x2 | |
| 6df0d464 YN |
319 | |
| 320 | struct test_bitmap_parselist{ | |
| 321 | const int errno; | |
| 322 | const char *in; | |
| 323 | const unsigned long *expected; | |
| 324 | const int nbits; | |
| 325 | const int flags; | |
| 326 | }; | |
| 327 | ||
| 6df0d464 | 328 | static const struct test_bitmap_parselist parselist_tests[] __initconst = { |
| 60ef6900 YN |
329 | #define step (sizeof(u64) / sizeof(unsigned long)) |
| 330 | ||
| 0ee312e3 AS |
331 | {0, "0", &exp1[0], 8, 0}, |
| 332 | {0, "1", &exp1[1 * step], 8, 0}, | |
| 333 | {0, "0-15", &exp1[2 * step], 32, 0}, | |
| 334 | {0, "16-31", &exp1[3 * step], 32, 0}, | |
| 335 | {0, "0-31:1/2", &exp1[4 * step], 32, 0}, | |
| 336 | {0, "1-31:1/2", &exp1[5 * step], 32, 0}, | |
| 337 | {0, "0-31:1/4", &exp1[6 * step], 32, 0}, | |
| 338 | {0, "1-31:1/4", &exp1[7 * step], 32, 0}, | |
| 339 | {0, "0-31:4/4", &exp1[8 * step], 32, 0}, | |
| 340 | {0, "1-31:4/4", &exp1[9 * step], 32, 0}, | |
| 341 | {0, "0-31:1/4,32-63:2/4", &exp1[10 * step], 64, 0}, | |
| 342 | {0, "0-31:3/4,32-63:4/4", &exp1[11 * step], 64, 0}, | |
| 343 | {0, " ,, 0-31:3/4 ,, 32-63:4/4 ,, ", &exp1[11 * step], 64, 0}, | |
| 6df0d464 YN |
344 | |
| 345 | {0, "0-31:1/4,32-63:2/4,64-95:3/4,96-127:4/4", exp2, 128, 0}, | |
| 346 | ||
| 347 | {0, "0-2047:128/256", NULL, 2048, PARSE_TIME}, | |
| 348 | ||
| 0ee312e3 AS |
349 | {0, "", &exp1[12 * step], 8, 0}, |
| 350 | {0, "\n", &exp1[12 * step], 8, 0}, | |
| 351 | {0, ",, ,, , , ,", &exp1[12 * step], 8, 0}, | |
| 352 | {0, " , ,, , , ", &exp1[12 * step], 8, 0}, | |
| 353 | {0, " , ,, , , \n", &exp1[12 * step], 8, 0}, | |
| a4ab5050 | 354 | |
| 97330db3 PG |
355 | {0, "0-0", &exp1[0], 32, 0}, |
| 356 | {0, "1-1", &exp1[1 * step], 32, 0}, | |
| 357 | {0, "15-15", &exp1[13 * step], 32, 0}, | |
| 358 | {0, "31-31", &exp1[14 * step], 32, 0}, | |
| 359 | ||
| 360 | {0, "0-0:0/1", &exp1[12 * step], 32, 0}, | |
| 361 | {0, "0-0:1/1", &exp1[0], 32, 0}, | |
| 362 | {0, "0-0:1/31", &exp1[0], 32, 0}, | |
| 363 | {0, "0-0:31/31", &exp1[0], 32, 0}, | |
| 364 | {0, "1-1:1/1", &exp1[1 * step], 32, 0}, | |
| 365 | {0, "0-15:16/31", &exp1[2 * step], 32, 0}, | |
| 366 | {0, "15-15:1/2", &exp1[13 * step], 32, 0}, | |
| 367 | {0, "15-15:31/31", &exp1[13 * step], 32, 0}, | |
| 368 | {0, "15-31:1/31", &exp1[13 * step], 32, 0}, | |
| 369 | {0, "16-31:16/31", &exp1[3 * step], 32, 0}, | |
| 370 | {0, "31-31:31/31", &exp1[14 * step], 32, 0}, | |
| 371 | ||
| 99c58d1a PG |
372 | {0, "N-N", &exp1[14 * step], 32, 0}, |
| 373 | {0, "0-0:1/N", &exp1[0], 32, 0}, | |
| 374 | {0, "0-0:N/N", &exp1[0], 32, 0}, | |
| 375 | {0, "0-15:16/N", &exp1[2 * step], 32, 0}, | |
| 376 | {0, "15-15:N/N", &exp1[13 * step], 32, 0}, | |
| 377 | {0, "15-N:1/N", &exp1[13 * step], 32, 0}, | |
| 378 | {0, "16-N:16/N", &exp1[3 * step], 32, 0}, | |
| 379 | {0, "N-N:N/N", &exp1[14 * step], 32, 0}, | |
| 380 | ||
| 381 | {0, "0-N:1/3,1-N:1/3,2-N:1/3", &exp1[8 * step], 32, 0}, | |
| 97330db3 PG |
382 | {0, "0-31:1/3,1-31:1/3,2-31:1/3", &exp1[8 * step], 32, 0}, |
| 383 | {0, "1-10:8/12,8-31:24/29,0-31:0/3", &exp1[9 * step], 32, 0}, | |
| 384 | ||
| b18def12 YN |
385 | {0, "all", &exp1[8 * step], 32, 0}, |
| 386 | {0, "0, 1, all, ", &exp1[8 * step], 32, 0}, | |
| 387 | {0, "all:1/2", &exp1[4 * step], 32, 0}, | |
| 388 | {0, "ALL:1/2", &exp1[4 * step], 32, 0}, | |
| 389 | {-EINVAL, "al", NULL, 8, 0}, | |
| 390 | {-EINVAL, "alll", NULL, 8, 0}, | |
| 391 | ||
| 6df0d464 YN |
392 | {-EINVAL, "-1", NULL, 8, 0}, |
| 393 | {-EINVAL, "-0", NULL, 8, 0}, | |
| 394 | {-EINVAL, "10-1", NULL, 8, 0}, | |
| 6fef5905 PG |
395 | {-ERANGE, "8-8", NULL, 8, 0}, |
| 396 | {-ERANGE, "0-31", NULL, 8, 0}, | |
| 494215fb PG |
397 | {-EINVAL, "0-31:", NULL, 32, 0}, |
| 398 | {-EINVAL, "0-31:0", NULL, 32, 0}, | |
| 399 | {-EINVAL, "0-31:0/", NULL, 32, 0}, | |
| 400 | {-EINVAL, "0-31:0/0", NULL, 32, 0}, | |
| 401 | {-EINVAL, "0-31:1/0", NULL, 32, 0}, | |
| 402 | {-EINVAL, "0-31:10/1", NULL, 32, 0}, | |
| a4ab5050 YN |
403 | {-EOVERFLOW, "0-98765432123456789:10/1", NULL, 8, 0}, |
| 404 | ||
| 405 | {-EINVAL, "a-31", NULL, 8, 0}, | |
| 406 | {-EINVAL, "0-a1", NULL, 8, 0}, | |
| 407 | {-EINVAL, "a-31:10/1", NULL, 8, 0}, | |
| 408 | {-EINVAL, "0-31:a/1", NULL, 8, 0}, | |
| 409 | {-EINVAL, "0-\n", NULL, 8, 0}, | |
| 54224044 | 410 | |
| 6df0d464 YN |
411 | }; |
| 412 | ||
| 81b1e242 | 413 | static void __init test_bitmap_parselist(void) |
| 6df0d464 YN |
414 | { |
| 415 | int i; | |
| 416 | int err; | |
| 0c2111a5 | 417 | ktime_t time; |
| 6df0d464 YN |
418 | DECLARE_BITMAP(bmap, 2048); |
| 419 | ||
| 420 | for (i = 0; i < ARRAY_SIZE(parselist_tests); i++) { | |
| 421 | #define ptest parselist_tests[i] | |
| 422 | ||
| 81b1e242 CH |
423 | time = ktime_get(); |
| 424 | err = bitmap_parselist(ptest.in, bmap, ptest.nbits); | |
| 425 | time = ktime_get() - time; | |
| 6df0d464 YN |
426 | |
| 427 | if (err != ptest.errno) { | |
| 81b1e242 CH |
428 | pr_err("parselist: %d: input is %s, errno is %d, expected %d\n", |
| 429 | i, ptest.in, err, ptest.errno); | |
| 6df0d464 YN |
430 | continue; |
| 431 | } | |
| 432 | ||
| 433 | if (!err && ptest.expected | |
| 434 | && !__bitmap_equal(bmap, ptest.expected, ptest.nbits)) { | |
| 81b1e242 CH |
435 | pr_err("parselist: %d: input is %s, result is 0x%lx, expected 0x%lx\n", |
| 436 | i, ptest.in, bmap[0], | |
| 6ea86bdf | 437 | *ptest.expected); |
| 6df0d464 YN |
438 | continue; |
| 439 | } | |
| 440 | ||
| 441 | if (ptest.flags & PARSE_TIME) | |
| 81b1e242 CH |
442 | pr_err("parselist: %d: input is '%s' OK, Time: %llu\n", |
| 443 | i, ptest.in, time); | |
| 54224044 AS |
444 | |
| 445 | #undef ptest | |
| 6df0d464 YN |
446 | } |
| 447 | } | |
| 448 | ||
| db731300 YN |
449 | static void __init test_bitmap_printlist(void) |
| 450 | { | |
| 451 | unsigned long *bmap = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
| 452 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
| 453 | char expected[256]; | |
| 454 | int ret, slen; | |
| 455 | ktime_t time; | |
| 456 | ||
| 457 | if (!buf || !bmap) | |
| 458 | goto out; | |
| 459 | ||
| 460 | memset(bmap, -1, PAGE_SIZE); | |
| 461 | slen = snprintf(expected, 256, "0-%ld", PAGE_SIZE * 8 - 1); | |
| 462 | if (slen < 0) | |
| 463 | goto out; | |
| 464 | ||
| 465 | time = ktime_get(); | |
| 466 | ret = bitmap_print_to_pagebuf(true, buf, bmap, PAGE_SIZE * 8); | |
| 467 | time = ktime_get() - time; | |
| 468 | ||
| 469 | if (ret != slen + 1) { | |
| 470 | pr_err("bitmap_print_to_pagebuf: result is %d, expected %d\n", ret, slen); | |
| 471 | goto out; | |
| 472 | } | |
| 473 | ||
| 474 | if (strncmp(buf, expected, slen)) { | |
| 475 | pr_err("bitmap_print_to_pagebuf: result is %s, expected %s\n", buf, expected); | |
| 476 | goto out; | |
| 477 | } | |
| 478 | ||
| 479 | pr_err("bitmap_print_to_pagebuf: input is '%s', Time: %llu\n", buf, time); | |
| 480 | out: | |
| 481 | kfree(buf); | |
| 482 | kfree(bmap); | |
| 483 | } | |
| 484 | ||
| 7eb2e94e YN |
485 | static const unsigned long parse_test[] __initconst = { |
| 486 | BITMAP_FROM_U64(0), | |
| 487 | BITMAP_FROM_U64(1), | |
| 488 | BITMAP_FROM_U64(0xdeadbeef), | |
| 489 | BITMAP_FROM_U64(0x100000000ULL), | |
| 490 | }; | |
| 491 | ||
| 492 | static const unsigned long parse_test2[] __initconst = { | |
| 493 | BITMAP_FROM_U64(0x100000000ULL), BITMAP_FROM_U64(0xdeadbeef), | |
| 494 | BITMAP_FROM_U64(0x100000000ULL), BITMAP_FROM_U64(0xbaadf00ddeadbeef), | |
| 495 | BITMAP_FROM_U64(0x100000000ULL), BITMAP_FROM_U64(0x0badf00ddeadbeef), | |
| 496 | }; | |
| 497 | ||
| 498 | static const struct test_bitmap_parselist parse_tests[] __initconst = { | |
| 809e308f YN |
499 | {0, "", &parse_test[0 * step], 32, 0}, |
| 500 | {0, " ", &parse_test[0 * step], 32, 0}, | |
| 7eb2e94e | 501 | {0, "0", &parse_test[0 * step], 32, 0}, |
| 809e308f | 502 | {0, "0\n", &parse_test[0 * step], 32, 0}, |
| 7eb2e94e YN |
503 | {0, "1", &parse_test[1 * step], 32, 0}, |
| 504 | {0, "deadbeef", &parse_test[2 * step], 32, 0}, | |
| 505 | {0, "1,0", &parse_test[3 * step], 33, 0}, | |
| 809e308f | 506 | {0, "deadbeef,\n,0,1", &parse_test[2 * step], 96, 0}, |
| 7eb2e94e YN |
507 | |
| 508 | {0, "deadbeef,1,0", &parse_test2[0 * 2 * step], 96, 0}, | |
| 509 | {0, "baadf00d,deadbeef,1,0", &parse_test2[1 * 2 * step], 128, 0}, | |
| 510 | {0, "badf00d,deadbeef,1,0", &parse_test2[2 * 2 * step], 124, 0}, | |
| 809e308f YN |
511 | {0, "badf00d,deadbeef,1,0", &parse_test2[2 * 2 * step], 124, NO_LEN}, |
| 512 | {0, " badf00d,deadbeef,1,0 ", &parse_test2[2 * 2 * step], 124, 0}, | |
| 513 | {0, " , badf00d,deadbeef,1,0 , ", &parse_test2[2 * 2 * step], 124, 0}, | |
| 514 | {0, " , badf00d, ,, ,,deadbeef,1,0 , ", &parse_test2[2 * 2 * step], 124, 0}, | |
| 7eb2e94e YN |
515 | |
| 516 | {-EINVAL, "goodfood,deadbeef,1,0", NULL, 128, 0}, | |
| 517 | {-EOVERFLOW, "3,0", NULL, 33, 0}, | |
| 518 | {-EOVERFLOW, "123badf00d,deadbeef,1,0", NULL, 128, 0}, | |
| 519 | {-EOVERFLOW, "badf00d,deadbeef,1,0", NULL, 90, 0}, | |
| 520 | {-EOVERFLOW, "fbadf00d,deadbeef,1,0", NULL, 95, 0}, | |
| 521 | {-EOVERFLOW, "badf00d,deadbeef,1,0", NULL, 100, 0}, | |
| 522 | #undef step | |
| 523 | }; | |
| 524 | ||
| 81b1e242 | 525 | static void __init test_bitmap_parse(void) |
| 7eb2e94e YN |
526 | { |
| 527 | int i; | |
| 528 | int err; | |
| 529 | ktime_t time; | |
| 530 | DECLARE_BITMAP(bmap, 2048); | |
| 7eb2e94e YN |
531 | |
| 532 | for (i = 0; i < ARRAY_SIZE(parse_tests); i++) { | |
| 533 | struct test_bitmap_parselist test = parse_tests[i]; | |
| 81b1e242 | 534 | size_t len = test.flags & NO_LEN ? UINT_MAX : strlen(test.in); |
| 7eb2e94e | 535 | |
| 81b1e242 CH |
536 | time = ktime_get(); |
| 537 | err = bitmap_parse(test.in, len, bmap, test.nbits); | |
| 538 | time = ktime_get() - time; | |
| 7eb2e94e YN |
539 | |
| 540 | if (err != test.errno) { | |
| 81b1e242 CH |
541 | pr_err("parse: %d: input is %s, errno is %d, expected %d\n", |
| 542 | i, test.in, err, test.errno); | |
| 7eb2e94e YN |
543 | continue; |
| 544 | } | |
| 545 | ||
| 546 | if (!err && test.expected | |
| 547 | && !__bitmap_equal(bmap, test.expected, test.nbits)) { | |
| 81b1e242 CH |
548 | pr_err("parse: %d: input is %s, result is 0x%lx, expected 0x%lx\n", |
| 549 | i, test.in, bmap[0], | |
| 7eb2e94e YN |
550 | *test.expected); |
| 551 | continue; | |
| 552 | } | |
| 553 | ||
| 554 | if (test.flags & PARSE_TIME) | |
| 81b1e242 CH |
555 | pr_err("parse: %d: input is '%s' OK, Time: %llu\n", |
| 556 | i, test.in, time); | |
| 7eb2e94e YN |
557 | } |
| 558 | } | |
| 559 | ||
| 0ee312e3 | 560 | #define EXP1_IN_BITS (sizeof(exp1) * 8) |
| f6f66c1b | 561 | |
| 3aa56885 | 562 | static void __init test_bitmap_arr32(void) |
| 5fd003f5 | 563 | { |
| f6f66c1b | 564 | unsigned int nbits, next_bit; |
| a4881d1c AS |
565 | u32 arr[EXP1_IN_BITS / 32]; |
| 566 | DECLARE_BITMAP(bmap2, EXP1_IN_BITS); | |
| 3aa56885 YN |
567 | |
| 568 | memset(arr, 0xa5, sizeof(arr)); | |
| 569 | ||
| a4881d1c | 570 | for (nbits = 0; nbits < EXP1_IN_BITS; ++nbits) { |
| 0ee312e3 | 571 | bitmap_to_arr32(arr, exp1, nbits); |
| 3aa56885 | 572 | bitmap_from_arr32(bmap2, arr, nbits); |
| 0ee312e3 | 573 | expect_eq_bitmap(bmap2, exp1, nbits); |
| 3aa56885 YN |
574 | |
| 575 | next_bit = find_next_bit(bmap2, | |
| 576 | round_up(nbits, BITS_PER_LONG), nbits); | |
| 577 | if (next_bit < round_up(nbits, BITS_PER_LONG)) | |
| 578 | pr_err("bitmap_copy_arr32(nbits == %d:" | |
| 579 | " tail is not safely cleared: %d\n", | |
| 580 | nbits, next_bit); | |
| 581 | ||
| a4881d1c | 582 | if (nbits < EXP1_IN_BITS - 32) |
| 3aa56885 YN |
583 | expect_eq_uint(arr[DIV_ROUND_UP(nbits, 32)], |
| 584 | 0xa5a5a5a5); | |
| 5fd003f5 DD |
585 | } |
| 586 | } | |
| 587 | ||
| 2c523550 YN |
588 | static void __init test_bitmap_arr64(void) |
| 589 | { | |
| 590 | unsigned int nbits, next_bit; | |
| 591 | u64 arr[EXP1_IN_BITS / 64]; | |
| 592 | DECLARE_BITMAP(bmap2, EXP1_IN_BITS); | |
| 593 | ||
| 594 | memset(arr, 0xa5, sizeof(arr)); | |
| 595 | ||
| 596 | for (nbits = 0; nbits < EXP1_IN_BITS; ++nbits) { | |
| 597 | memset(bmap2, 0xff, sizeof(arr)); | |
| 598 | bitmap_to_arr64(arr, exp1, nbits); | |
| 599 | bitmap_from_arr64(bmap2, arr, nbits); | |
| 600 | expect_eq_bitmap(bmap2, exp1, nbits); | |
| 601 | ||
| 602 | next_bit = find_next_bit(bmap2, round_up(nbits, BITS_PER_LONG), nbits); | |
| 603 | if (next_bit < round_up(nbits, BITS_PER_LONG)) | |
| 604 | pr_err("bitmap_copy_arr64(nbits == %d:" | |
| 605 | " tail is not safely cleared: %d\n", nbits, next_bit); | |
| 606 | ||
| 607 | if (nbits < EXP1_IN_BITS - 64) | |
| 608 | expect_eq_uint(arr[DIV_ROUND_UP(nbits, 64)], 0xa5a5a5a5); | |
| 609 | } | |
| 610 | } | |
| 611 | ||
| 3cc78125 MW |
612 | static void noinline __init test_mem_optimisations(void) |
| 613 | { | |
| 614 | DECLARE_BITMAP(bmap1, 1024); | |
| 615 | DECLARE_BITMAP(bmap2, 1024); | |
| 616 | unsigned int start, nbits; | |
| 617 | ||
| 618 | for (start = 0; start < 1024; start += 8) { | |
| 3cc78125 | 619 | for (nbits = 0; nbits < 1024 - start; nbits += 8) { |
| 1e3054b9 MW |
620 | memset(bmap1, 0x5a, sizeof(bmap1)); |
| 621 | memset(bmap2, 0x5a, sizeof(bmap2)); | |
| 622 | ||
| 3cc78125 MW |
623 | bitmap_set(bmap1, start, nbits); |
| 624 | __bitmap_set(bmap2, start, nbits); | |
| 1e3054b9 | 625 | if (!bitmap_equal(bmap1, bmap2, 1024)) { |
| 3cc78125 | 626 | printk("set not equal %d %d\n", start, nbits); |
| 1e3054b9 MW |
627 | failed_tests++; |
| 628 | } | |
| 629 | if (!__bitmap_equal(bmap1, bmap2, 1024)) { | |
| 3cc78125 | 630 | printk("set not __equal %d %d\n", start, nbits); |
| 1e3054b9 MW |
631 | failed_tests++; |
| 632 | } | |
| 3cc78125 MW |
633 | |
| 634 | bitmap_clear(bmap1, start, nbits); | |
| 635 | __bitmap_clear(bmap2, start, nbits); | |
| 1e3054b9 | 636 | if (!bitmap_equal(bmap1, bmap2, 1024)) { |
| 3cc78125 | 637 | printk("clear not equal %d %d\n", start, nbits); |
| 1e3054b9 MW |
638 | failed_tests++; |
| 639 | } | |
| 640 | if (!__bitmap_equal(bmap1, bmap2, 1024)) { | |
| 3cc78125 MW |
641 | printk("clear not __equal %d %d\n", start, |
| 642 | nbits); | |
| 1e3054b9 MW |
643 | failed_tests++; |
| 644 | } | |
| 3cc78125 MW |
645 | } |
| 646 | } | |
| 647 | } | |
| 648 | ||
| e4aa168d WBG |
649 | static const unsigned char clump_exp[] __initconst = { |
| 650 | 0x01, /* 1 bit set */ | |
| 651 | 0x02, /* non-edge 1 bit set */ | |
| 652 | 0x00, /* zero bits set */ | |
| 653 | 0x38, /* 3 bits set across 4-bit boundary */ | |
| 654 | 0x38, /* Repeated clump */ | |
| 655 | 0x0F, /* 4 bits set */ | |
| 656 | 0xFF, /* all bits set */ | |
| 657 | 0x05, /* non-adjacent 2 bits set */ | |
| 658 | }; | |
| 659 | ||
| 660 | static void __init test_for_each_set_clump8(void) | |
| 661 | { | |
| 662 | #define CLUMP_EXP_NUMBITS 64 | |
| 663 | DECLARE_BITMAP(bits, CLUMP_EXP_NUMBITS); | |
| 664 | unsigned int start; | |
| 665 | unsigned long clump; | |
| 666 | ||
| 667 | /* set bitmap to test case */ | |
| 668 | bitmap_zero(bits, CLUMP_EXP_NUMBITS); | |
| 669 | bitmap_set(bits, 0, 1); /* 0x01 */ | |
| 670 | bitmap_set(bits, 9, 1); /* 0x02 */ | |
| 671 | bitmap_set(bits, 27, 3); /* 0x28 */ | |
| 672 | bitmap_set(bits, 35, 3); /* 0x28 */ | |
| 673 | bitmap_set(bits, 40, 4); /* 0x0F */ | |
| 674 | bitmap_set(bits, 48, 8); /* 0xFF */ | |
| 675 | bitmap_set(bits, 56, 1); /* 0x05 - part 1 */ | |
| 676 | bitmap_set(bits, 58, 1); /* 0x05 - part 2 */ | |
| 677 | ||
| 678 | for_each_set_clump8(start, clump, bits, CLUMP_EXP_NUMBITS) | |
| 679 | expect_eq_clump8(start, CLUMP_EXP_NUMBITS, clump_exp, &clump); | |
| 680 | } | |
| 681 | ||
| bcb32a1d SB |
682 | struct test_bitmap_cut { |
| 683 | unsigned int first; | |
| 684 | unsigned int cut; | |
| 685 | unsigned int nbits; | |
| 686 | unsigned long in[4]; | |
| 687 | unsigned long expected[4]; | |
| 688 | }; | |
| 689 | ||
| 690 | static struct test_bitmap_cut test_cut[] = { | |
| 691 | { 0, 0, 8, { 0x0000000aUL, }, { 0x0000000aUL, }, }, | |
| 692 | { 0, 0, 32, { 0xdadadeadUL, }, { 0xdadadeadUL, }, }, | |
| 693 | { 0, 3, 8, { 0x000000aaUL, }, { 0x00000015UL, }, }, | |
| 694 | { 3, 3, 8, { 0x000000aaUL, }, { 0x00000012UL, }, }, | |
| 695 | { 0, 1, 32, { 0xa5a5a5a5UL, }, { 0x52d2d2d2UL, }, }, | |
| 696 | { 0, 8, 32, { 0xdeadc0deUL, }, { 0x00deadc0UL, }, }, | |
| 697 | { 1, 1, 32, { 0x5a5a5a5aUL, }, { 0x2d2d2d2cUL, }, }, | |
| 698 | { 0, 15, 32, { 0xa5a5a5a5UL, }, { 0x00014b4bUL, }, }, | |
| 699 | { 0, 16, 32, { 0xa5a5a5a5UL, }, { 0x0000a5a5UL, }, }, | |
| 700 | { 15, 15, 32, { 0xa5a5a5a5UL, }, { 0x000125a5UL, }, }, | |
| 701 | { 15, 16, 32, { 0xa5a5a5a5UL, }, { 0x0000a5a5UL, }, }, | |
| 702 | { 16, 15, 32, { 0xa5a5a5a5UL, }, { 0x0001a5a5UL, }, }, | |
| 703 | ||
| 704 | { BITS_PER_LONG, BITS_PER_LONG, BITS_PER_LONG, | |
| 705 | { 0xa5a5a5a5UL, 0xa5a5a5a5UL, }, | |
| 706 | { 0xa5a5a5a5UL, 0xa5a5a5a5UL, }, | |
| 707 | }, | |
| 708 | { 1, BITS_PER_LONG - 1, BITS_PER_LONG, | |
| 709 | { 0xa5a5a5a5UL, 0xa5a5a5a5UL, }, | |
| 710 | { 0x00000001UL, 0x00000001UL, }, | |
| 711 | }, | |
| 712 | ||
| 713 | { 0, BITS_PER_LONG * 2, BITS_PER_LONG * 2 + 1, | |
| 714 | { 0xa5a5a5a5UL, 0x00000001UL, 0x00000001UL, 0x00000001UL }, | |
| 715 | { 0x00000001UL, }, | |
| 716 | }, | |
| 717 | { 16, BITS_PER_LONG * 2 + 1, BITS_PER_LONG * 2 + 1 + 16, | |
| 718 | { 0x0000ffffUL, 0x5a5a5a5aUL, 0x5a5a5a5aUL, 0x5a5a5a5aUL }, | |
| 719 | { 0x2d2dffffUL, }, | |
| 720 | }, | |
| 721 | }; | |
| 722 | ||
| 723 | static void __init test_bitmap_cut(void) | |
| 724 | { | |
| 725 | unsigned long b[5], *in = &b[1], *out = &b[0]; /* Partial overlap */ | |
| 726 | int i; | |
| 727 | ||
| 728 | for (i = 0; i < ARRAY_SIZE(test_cut); i++) { | |
| 729 | struct test_bitmap_cut *t = &test_cut[i]; | |
| 730 | ||
| 731 | memcpy(in, t->in, sizeof(t->in)); | |
| 732 | ||
| 733 | bitmap_cut(out, in, t->first, t->cut, t->nbits); | |
| 734 | ||
| 735 | expect_eq_bitmap(t->expected, out, t->nbits); | |
| 736 | } | |
| 737 | } | |
| 738 | ||
| 291f93ca BS |
739 | struct test_bitmap_print { |
| 740 | const unsigned long *bitmap; | |
| 741 | unsigned long nbits; | |
| 742 | const char *mask; | |
| 743 | const char *list; | |
| 744 | }; | |
| 745 | ||
| 746 | static const unsigned long small_bitmap[] __initconst = { | |
| 747 | BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 748 | }; | |
| 749 | ||
| 750 | static const char small_mask[] __initconst = "33333333,11111111\n"; | |
| 751 | static const char small_list[] __initconst = "0,4,8,12,16,20,24,28,32-33,36-37,40-41,44-45,48-49,52-53,56-57,60-61\n"; | |
| 752 | ||
| 753 | static const unsigned long large_bitmap[] __initconst = { | |
| 754 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 755 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 756 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 757 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 758 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 759 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 760 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 761 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 762 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 763 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 764 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 765 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 766 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 767 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 768 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 769 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 770 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 771 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 772 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 773 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
| 774 | }; | |
| 775 | ||
| 776 | static const char large_mask[] __initconst = "33333333,11111111,33333333,11111111," | |
| 777 | "33333333,11111111,33333333,11111111," | |
| 778 | "33333333,11111111,33333333,11111111," | |
| 779 | "33333333,11111111,33333333,11111111," | |
| 780 | "33333333,11111111,33333333,11111111," | |
| 781 | "33333333,11111111,33333333,11111111," | |
| 782 | "33333333,11111111,33333333,11111111," | |
| 783 | "33333333,11111111,33333333,11111111," | |
| 784 | "33333333,11111111,33333333,11111111," | |
| 785 | "33333333,11111111,33333333,11111111," | |
| 786 | "33333333,11111111,33333333,11111111," | |
| 787 | "33333333,11111111,33333333,11111111," | |
| 788 | "33333333,11111111,33333333,11111111," | |
| 789 | "33333333,11111111,33333333,11111111," | |
| 790 | "33333333,11111111,33333333,11111111," | |
| 791 | "33333333,11111111,33333333,11111111," | |
| 792 | "33333333,11111111,33333333,11111111," | |
| 793 | "33333333,11111111,33333333,11111111," | |
| 794 | "33333333,11111111,33333333,11111111," | |
| 795 | "33333333,11111111,33333333,11111111\n"; | |
| 796 | ||
| 797 | static const char large_list[] __initconst = /* more than 4KB */ | |
| 798 | "0,4,8,12,16,20,24,28,32-33,36-37,40-41,44-45,48-49,52-53,56-57,60-61,64,68,72,76,80,84,88,92,96-97,100-101,104-1" | |
| 799 | "05,108-109,112-113,116-117,120-121,124-125,128,132,136,140,144,148,152,156,160-161,164-165,168-169,172-173,176-1" | |
| 800 | "77,180-181,184-185,188-189,192,196,200,204,208,212,216,220,224-225,228-229,232-233,236-237,240-241,244-245,248-2" | |
| 801 | "49,252-253,256,260,264,268,272,276,280,284,288-289,292-293,296-297,300-301,304-305,308-309,312-313,316-317,320,3" | |
| 802 | "24,328,332,336,340,344,348,352-353,356-357,360-361,364-365,368-369,372-373,376-377,380-381,384,388,392,396,400,4" | |
| 803 | "04,408,412,416-417,420-421,424-425,428-429,432-433,436-437,440-441,444-445,448,452,456,460,464,468,472,476,480-4" | |
| 804 | "81,484-485,488-489,492-493,496-497,500-501,504-505,508-509,512,516,520,524,528,532,536,540,544-545,548-549,552-5" | |
| 805 | "53,556-557,560-561,564-565,568-569,572-573,576,580,584,588,592,596,600,604,608-609,612-613,616-617,620-621,624-6" | |
| 806 | "25,628-629,632-633,636-637,640,644,648,652,656,660,664,668,672-673,676-677,680-681,684-685,688-689,692-693,696-6" | |
| 807 | "97,700-701,704,708,712,716,720,724,728,732,736-737,740-741,744-745,748-749,752-753,756-757,760-761,764-765,768,7" | |
| 808 | "72,776,780,784,788,792,796,800-801,804-805,808-809,812-813,816-817,820-821,824-825,828-829,832,836,840,844,848,8" | |
| 809 | "52,856,860,864-865,868-869,872-873,876-877,880-881,884-885,888-889,892-893,896,900,904,908,912,916,920,924,928-9" | |
| 810 | "29,932-933,936-937,940-941,944-945,948-949,952-953,956-957,960,964,968,972,976,980,984,988,992-993,996-997,1000-" | |
| 811 | "1001,1004-1005,1008-1009,1012-1013,1016-1017,1020-1021,1024,1028,1032,1036,1040,1044,1048,1052,1056-1057,1060-10" | |
| 812 | "61,1064-1065,1068-1069,1072-1073,1076-1077,1080-1081,1084-1085,1088,1092,1096,1100,1104,1108,1112,1116,1120-1121" | |
| 813 | ",1124-1125,1128-1129,1132-1133,1136-1137,1140-1141,1144-1145,1148-1149,1152,1156,1160,1164,1168,1172,1176,1180,1" | |
| 814 | "184-1185,1188-1189,1192-1193,1196-1197,1200-1201,1204-1205,1208-1209,1212-1213,1216,1220,1224,1228,1232,1236,124" | |
| 815 | "0,1244,1248-1249,1252-1253,1256-1257,1260-1261,1264-1265,1268-1269,1272-1273,1276-1277,1280,1284,1288,1292,1296," | |
| 816 | "1300,1304,1308,1312-1313,1316-1317,1320-1321,1324-1325,1328-1329,1332-1333,1336-1337,1340-1341,1344,1348,1352,13" | |
| 817 | "56,1360,1364,1368,1372,1376-1377,1380-1381,1384-1385,1388-1389,1392-1393,1396-1397,1400-1401,1404-1405,1408,1412" | |
| 818 | ",1416,1420,1424,1428,1432,1436,1440-1441,1444-1445,1448-1449,1452-1453,1456-1457,1460-1461,1464-1465,1468-1469,1" | |
| 819 | "472,1476,1480,1484,1488,1492,1496,1500,1504-1505,1508-1509,1512-1513,1516-1517,1520-1521,1524-1525,1528-1529,153" | |
| 820 | "2-1533,1536,1540,1544,1548,1552,1556,1560,1564,1568-1569,1572-1573,1576-1577,1580-1581,1584-1585,1588-1589,1592-" | |
| 821 | "1593,1596-1597,1600,1604,1608,1612,1616,1620,1624,1628,1632-1633,1636-1637,1640-1641,1644-1645,1648-1649,1652-16" | |
| 822 | "53,1656-1657,1660-1661,1664,1668,1672,1676,1680,1684,1688,1692,1696-1697,1700-1701,1704-1705,1708-1709,1712-1713" | |
| 823 | ",1716-1717,1720-1721,1724-1725,1728,1732,1736,1740,1744,1748,1752,1756,1760-1761,1764-1765,1768-1769,1772-1773,1" | |
| 824 | "776-1777,1780-1781,1784-1785,1788-1789,1792,1796,1800,1804,1808,1812,1816,1820,1824-1825,1828-1829,1832-1833,183" | |
| 825 | "6-1837,1840-1841,1844-1845,1848-1849,1852-1853,1856,1860,1864,1868,1872,1876,1880,1884,1888-1889,1892-1893,1896-" | |
| 826 | "1897,1900-1901,1904-1905,1908-1909,1912-1913,1916-1917,1920,1924,1928,1932,1936,1940,1944,1948,1952-1953,1956-19" | |
| 827 | "57,1960-1961,1964-1965,1968-1969,1972-1973,1976-1977,1980-1981,1984,1988,1992,1996,2000,2004,2008,2012,2016-2017" | |
| 828 | ",2020-2021,2024-2025,2028-2029,2032-2033,2036-2037,2040-2041,2044-2045,2048,2052,2056,2060,2064,2068,2072,2076,2" | |
| 829 | "080-2081,2084-2085,2088-2089,2092-2093,2096-2097,2100-2101,2104-2105,2108-2109,2112,2116,2120,2124,2128,2132,213" | |
| 830 | "6,2140,2144-2145,2148-2149,2152-2153,2156-2157,2160-2161,2164-2165,2168-2169,2172-2173,2176,2180,2184,2188,2192," | |
| 831 | "2196,2200,2204,2208-2209,2212-2213,2216-2217,2220-2221,2224-2225,2228-2229,2232-2233,2236-2237,2240,2244,2248,22" | |
| 832 | "52,2256,2260,2264,2268,2272-2273,2276-2277,2280-2281,2284-2285,2288-2289,2292-2293,2296-2297,2300-2301,2304,2308" | |
| 833 | ",2312,2316,2320,2324,2328,2332,2336-2337,2340-2341,2344-2345,2348-2349,2352-2353,2356-2357,2360-2361,2364-2365,2" | |
| 834 | "368,2372,2376,2380,2384,2388,2392,2396,2400-2401,2404-2405,2408-2409,2412-2413,2416-2417,2420-2421,2424-2425,242" | |
| 835 | "8-2429,2432,2436,2440,2444,2448,2452,2456,2460,2464-2465,2468-2469,2472-2473,2476-2477,2480-2481,2484-2485,2488-" | |
| 836 | "2489,2492-2493,2496,2500,2504,2508,2512,2516,2520,2524,2528-2529,2532-2533,2536-2537,2540-2541,2544-2545,2548-25" | |
| 837 | "49,2552-2553,2556-2557\n"; | |
| 838 | ||
| 839 | static const struct test_bitmap_print test_print[] __initconst = { | |
| 840 | { small_bitmap, sizeof(small_bitmap) * BITS_PER_BYTE, small_mask, small_list }, | |
| 841 | { large_bitmap, sizeof(large_bitmap) * BITS_PER_BYTE, large_mask, large_list }, | |
| 842 | }; | |
| 843 | ||
| 844 | static void __init test_bitmap_print_buf(void) | |
| 845 | { | |
| 846 | int i; | |
| 847 | ||
| 848 | for (i = 0; i < ARRAY_SIZE(test_print); i++) { | |
| 849 | const struct test_bitmap_print *t = &test_print[i]; | |
| 850 | int n; | |
| 851 | ||
| 852 | n = bitmap_print_bitmask_to_buf(print_buf, t->bitmap, t->nbits, | |
| 853 | 0, 2 * PAGE_SIZE); | |
| 854 | expect_eq_uint(strlen(t->mask) + 1, n); | |
| 855 | expect_eq_str(t->mask, print_buf, n); | |
| 856 | ||
| 857 | n = bitmap_print_list_to_buf(print_buf, t->bitmap, t->nbits, | |
| 858 | 0, 2 * PAGE_SIZE); | |
| 859 | expect_eq_uint(strlen(t->list) + 1, n); | |
| 860 | expect_eq_str(t->list, print_buf, n); | |
| 861 | ||
| 862 | /* test by non-zero offset */ | |
| 863 | if (strlen(t->list) > PAGE_SIZE) { | |
| 864 | n = bitmap_print_list_to_buf(print_buf, t->bitmap, t->nbits, | |
| 865 | PAGE_SIZE, PAGE_SIZE); | |
| 866 | expect_eq_uint(strlen(t->list) + 1 - PAGE_SIZE, n); | |
| 867 | expect_eq_str(t->list + PAGE_SIZE, print_buf, n); | |
| 868 | } | |
| 869 | } | |
| 870 | } | |
| 871 | ||
| dc34d503 AL |
872 | static void __init test_bitmap_const_eval(void) |
| 873 | { | |
| 874 | DECLARE_BITMAP(bitmap, BITS_PER_LONG); | |
| 875 | unsigned long initvar = BIT(2); | |
| 876 | unsigned long bitopvar = 0; | |
| 877 | unsigned long var = 0; | |
| 878 | int res; | |
| 879 | ||
| 880 | /* | |
| 881 | * Compilers must be able to optimize all of those to compile-time | |
| 882 | * constants on any supported optimization level (-O2, -Os) and any | |
| 883 | * architecture. Otherwise, trigger a build bug. | |
| 884 | * The whole function gets optimized out then, there's nothing to do | |
| 885 | * in runtime. | |
| 886 | */ | |
| 887 | ||
| 888 | /* | |
| 889 | * Equals to `unsigned long bitmap[1] = { GENMASK(6, 5), }`. | |
| 890 | * Clang on s390 optimizes bitops at compile-time as intended, but at | |
| 891 | * the same time stops treating @bitmap and @bitopvar as compile-time | |
| 892 | * constants after regular test_bit() is executed, thus triggering the | |
| 893 | * build bugs below. So, call const_test_bit() there directly until | |
| 894 | * the compiler is fixed. | |
| 895 | */ | |
| 896 | bitmap_clear(bitmap, 0, BITS_PER_LONG); | |
| 897 | #if defined(__s390__) && defined(__clang__) | |
| 898 | if (!const_test_bit(7, bitmap)) | |
| 899 | #else | |
| 900 | if (!test_bit(7, bitmap)) | |
| 901 | #endif | |
| 902 | bitmap_set(bitmap, 5, 2); | |
| 903 | ||
| 904 | /* Equals to `unsigned long bitopvar = BIT(20)` */ | |
| 905 | __change_bit(31, &bitopvar); | |
| 906 | bitmap_shift_right(&bitopvar, &bitopvar, 11, BITS_PER_LONG); | |
| 907 | ||
| 908 | /* Equals to `unsigned long var = BIT(25)` */ | |
| 909 | var |= BIT(25); | |
| 910 | if (var & BIT(0)) | |
| 911 | var ^= GENMASK(9, 6); | |
| 912 | ||
| 913 | /* __const_hweight<32|64>(GENMASK(6, 5)) == 2 */ | |
| 914 | res = bitmap_weight(bitmap, 20); | |
| 915 | BUILD_BUG_ON(!__builtin_constant_p(res)); | |
| 916 | BUILD_BUG_ON(res != 2); | |
| 917 | ||
| 918 | /* !(BIT(31) & BIT(18)) == 1 */ | |
| 919 | res = !test_bit(18, &bitopvar); | |
| 920 | BUILD_BUG_ON(!__builtin_constant_p(res)); | |
| 921 | BUILD_BUG_ON(!res); | |
| 922 | ||
| 923 | /* BIT(2) & GENMASK(14, 8) == 0 */ | |
| 924 | res = initvar & GENMASK(14, 8); | |
| 925 | BUILD_BUG_ON(!__builtin_constant_p(res)); | |
| 926 | BUILD_BUG_ON(res); | |
| 927 | ||
| 928 | /* ~BIT(25) */ | |
| 929 | BUILD_BUG_ON(!__builtin_constant_p(~var)); | |
| 930 | BUILD_BUG_ON(~var != ~BIT(25)); | |
| 931 | } | |
| 932 | ||
| 6b1a4d5b | 933 | static void __init selftest(void) |
| 5fd003f5 | 934 | { |
| ee3527bd | 935 | test_zero_clear(); |
| 978f369c | 936 | test_fill_set(); |
| fe81814c | 937 | test_copy(); |
| 30544ed5 | 938 | test_replace(); |
| 3aa56885 | 939 | test_bitmap_arr32(); |
| 2c523550 | 940 | test_bitmap_arr64(); |
| 7eb2e94e | 941 | test_bitmap_parse(); |
| 6df0d464 | 942 | test_bitmap_parselist(); |
| db731300 | 943 | test_bitmap_printlist(); |
| 3cc78125 | 944 | test_mem_optimisations(); |
| e4aa168d | 945 | test_for_each_set_clump8(); |
| bcb32a1d | 946 | test_bitmap_cut(); |
| 291f93ca | 947 | test_bitmap_print_buf(); |
| dc34d503 | 948 | test_bitmap_const_eval(); |
| 5fd003f5 DD |
949 | } |
| 950 | ||
| 6b1a4d5b | 951 | KSTM_MODULE_LOADERS(test_bitmap); |
| 5fd003f5 DD |
952 | MODULE_AUTHOR("david decotigny <david.decotigny@googlers.com>"); |
| 953 | MODULE_LICENSE("GPL"); |