Commit | Line | Data |
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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 | ||
e3783c80 YN |
19 | #define EXP1_IN_BITS (sizeof(exp1) * 8) |
20 | ||
4e89a787 | 21 | KSTM_MODULE_GLOBALS(); |
5fd003f5 DD |
22 | |
23 | static char pbl_buffer[PAGE_SIZE] __initdata; | |
291f93ca | 24 | static char print_buf[PAGE_SIZE * 2] __initdata; |
5fd003f5 | 25 | |
c21dd8a7 AS |
26 | static const unsigned long exp1[] __initconst = { |
27 | BITMAP_FROM_U64(1), | |
28 | BITMAP_FROM_U64(2), | |
29 | BITMAP_FROM_U64(0x0000ffff), | |
30 | BITMAP_FROM_U64(0xffff0000), | |
31 | BITMAP_FROM_U64(0x55555555), | |
32 | BITMAP_FROM_U64(0xaaaaaaaa), | |
33 | BITMAP_FROM_U64(0x11111111), | |
34 | BITMAP_FROM_U64(0x22222222), | |
35 | BITMAP_FROM_U64(0xffffffff), | |
36 | BITMAP_FROM_U64(0xfffffffe), | |
37 | BITMAP_FROM_U64(0x3333333311111111ULL), | |
38 | BITMAP_FROM_U64(0xffffffff77777777ULL), | |
39 | BITMAP_FROM_U64(0), | |
97330db3 PG |
40 | BITMAP_FROM_U64(0x00008000), |
41 | BITMAP_FROM_U64(0x80000000), | |
c21dd8a7 AS |
42 | }; |
43 | ||
44 | static const unsigned long exp2[] __initconst = { | |
45 | BITMAP_FROM_U64(0x3333333311111111ULL), | |
46 | BITMAP_FROM_U64(0xffffffff77777777ULL), | |
47 | }; | |
5fd003f5 | 48 | |
30544ed5 AS |
49 | /* Fibonacci sequence */ |
50 | static const unsigned long exp2_to_exp3_mask[] __initconst = { | |
51 | BITMAP_FROM_U64(0x008000020020212eULL), | |
52 | }; | |
53 | /* exp3_0_1 = (exp2[0] & ~exp2_to_exp3_mask) | (exp2[1] & exp2_to_exp3_mask) */ | |
54 | static const unsigned long exp3_0_1[] __initconst = { | |
55 | BITMAP_FROM_U64(0x33b3333311313137ULL), | |
56 | }; | |
57 | /* exp3_1_0 = (exp2[1] & ~exp2_to_exp3_mask) | (exp2[0] & exp2_to_exp3_mask) */ | |
58 | static const unsigned long exp3_1_0[] __initconst = { | |
59 | BITMAP_FROM_U64(0xff7fffff77575751ULL), | |
60 | }; | |
61 | ||
5fd003f5 DD |
62 | static bool __init |
63 | __check_eq_uint(const char *srcfile, unsigned int line, | |
64 | const unsigned int exp_uint, unsigned int x) | |
65 | { | |
66 | if (exp_uint != x) { | |
3aa56885 | 67 | pr_err("[%s:%u] expected %u, got %u\n", |
5fd003f5 DD |
68 | srcfile, line, exp_uint, x); |
69 | return false; | |
70 | } | |
71 | return true; | |
72 | } | |
73 | ||
74 | ||
75 | static bool __init | |
76 | __check_eq_bitmap(const char *srcfile, unsigned int line, | |
3aa56885 YN |
77 | const unsigned long *exp_bmap, const unsigned long *bmap, |
78 | unsigned int nbits) | |
5fd003f5 | 79 | { |
5fd003f5 DD |
80 | if (!bitmap_equal(exp_bmap, bmap, nbits)) { |
81 | pr_warn("[%s:%u] bitmaps contents differ: expected \"%*pbl\", got \"%*pbl\"\n", | |
82 | srcfile, line, | |
3aa56885 | 83 | nbits, exp_bmap, nbits, bmap); |
5fd003f5 DD |
84 | return false; |
85 | } | |
86 | return true; | |
87 | } | |
88 | ||
89 | static bool __init | |
90 | __check_eq_pbl(const char *srcfile, unsigned int line, | |
91 | const char *expected_pbl, | |
92 | const unsigned long *bitmap, unsigned int nbits) | |
93 | { | |
94 | snprintf(pbl_buffer, sizeof(pbl_buffer), "%*pbl", nbits, bitmap); | |
95 | if (strcmp(expected_pbl, pbl_buffer)) { | |
96 | pr_warn("[%s:%u] expected \"%s\", got \"%s\"\n", | |
97 | srcfile, line, | |
98 | expected_pbl, pbl_buffer); | |
99 | return false; | |
100 | } | |
101 | return true; | |
102 | } | |
103 | ||
3aa56885 YN |
104 | static bool __init |
105 | __check_eq_u32_array(const char *srcfile, unsigned int line, | |
106 | const u32 *exp_arr, unsigned int exp_len, | |
107 | const u32 *arr, unsigned int len) __used; | |
5fd003f5 DD |
108 | static bool __init |
109 | __check_eq_u32_array(const char *srcfile, unsigned int line, | |
110 | const u32 *exp_arr, unsigned int exp_len, | |
111 | const u32 *arr, unsigned int len) | |
112 | { | |
113 | if (exp_len != len) { | |
114 | pr_warn("[%s:%u] array length differ: expected %u, got %u\n", | |
115 | srcfile, line, | |
116 | exp_len, len); | |
117 | return false; | |
118 | } | |
119 | ||
120 | if (memcmp(exp_arr, arr, len*sizeof(*arr))) { | |
121 | pr_warn("[%s:%u] array contents differ\n", srcfile, line); | |
122 | print_hex_dump(KERN_WARNING, " exp: ", DUMP_PREFIX_OFFSET, | |
123 | 32, 4, exp_arr, exp_len*sizeof(*exp_arr), false); | |
124 | print_hex_dump(KERN_WARNING, " got: ", DUMP_PREFIX_OFFSET, | |
125 | 32, 4, arr, len*sizeof(*arr), false); | |
126 | return false; | |
127 | } | |
128 | ||
129 | return true; | |
130 | } | |
131 | ||
e4aa168d WBG |
132 | static bool __init __check_eq_clump8(const char *srcfile, unsigned int line, |
133 | const unsigned int offset, | |
134 | const unsigned int size, | |
135 | const unsigned char *const clump_exp, | |
136 | const unsigned long *const clump) | |
137 | { | |
138 | unsigned long exp; | |
139 | ||
140 | if (offset >= size) { | |
141 | pr_warn("[%s:%u] bit offset for clump out-of-bounds: expected less than %u, got %u\n", | |
142 | srcfile, line, size, offset); | |
143 | return false; | |
144 | } | |
145 | ||
146 | exp = clump_exp[offset / 8]; | |
147 | if (!exp) { | |
148 | pr_warn("[%s:%u] bit offset for zero clump: expected nonzero clump, got bit offset %u with clump value 0", | |
149 | srcfile, line, offset); | |
150 | return false; | |
151 | } | |
152 | ||
153 | if (*clump != exp) { | |
154 | pr_warn("[%s:%u] expected clump value of 0x%lX, got clump value of 0x%lX", | |
155 | srcfile, line, exp, *clump); | |
156 | return false; | |
157 | } | |
158 | ||
159 | return true; | |
160 | } | |
161 | ||
291f93ca BS |
162 | static bool __init |
163 | __check_eq_str(const char *srcfile, unsigned int line, | |
164 | const char *exp_str, const char *str, | |
165 | unsigned int len) | |
166 | { | |
167 | bool eq; | |
168 | ||
169 | eq = strncmp(exp_str, str, len) == 0; | |
170 | if (!eq) | |
171 | pr_err("[%s:%u] expected %s, got %s\n", srcfile, line, exp_str, str); | |
172 | ||
173 | return eq; | |
174 | } | |
175 | ||
5fd003f5 DD |
176 | #define __expect_eq(suffix, ...) \ |
177 | ({ \ | |
178 | int result = 0; \ | |
179 | total_tests++; \ | |
180 | if (!__check_eq_ ## suffix(__FILE__, __LINE__, \ | |
181 | ##__VA_ARGS__)) { \ | |
182 | failed_tests++; \ | |
183 | result = 1; \ | |
184 | } \ | |
185 | result; \ | |
186 | }) | |
187 | ||
188 | #define expect_eq_uint(...) __expect_eq(uint, ##__VA_ARGS__) | |
189 | #define expect_eq_bitmap(...) __expect_eq(bitmap, ##__VA_ARGS__) | |
190 | #define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__) | |
191 | #define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__) | |
e4aa168d | 192 | #define expect_eq_clump8(...) __expect_eq(clump8, ##__VA_ARGS__) |
291f93ca | 193 | #define expect_eq_str(...) __expect_eq(str, ##__VA_ARGS__) |
5fd003f5 | 194 | |
ee3527bd AS |
195 | static void __init test_zero_clear(void) |
196 | { | |
197 | DECLARE_BITMAP(bmap, 1024); | |
198 | ||
199 | /* Known way to set all bits */ | |
200 | memset(bmap, 0xff, 128); | |
201 | ||
202 | expect_eq_pbl("0-22", bmap, 23); | |
203 | expect_eq_pbl("0-1023", bmap, 1024); | |
204 | ||
205 | /* single-word bitmaps */ | |
206 | bitmap_clear(bmap, 0, 9); | |
207 | expect_eq_pbl("9-1023", bmap, 1024); | |
208 | ||
209 | bitmap_zero(bmap, 35); | |
210 | expect_eq_pbl("64-1023", bmap, 1024); | |
211 | ||
212 | /* cross boundaries operations */ | |
213 | bitmap_clear(bmap, 79, 19); | |
214 | expect_eq_pbl("64-78,98-1023", bmap, 1024); | |
215 | ||
216 | bitmap_zero(bmap, 115); | |
217 | expect_eq_pbl("128-1023", bmap, 1024); | |
218 | ||
219 | /* Zeroing entire area */ | |
220 | bitmap_zero(bmap, 1024); | |
221 | expect_eq_pbl("", bmap, 1024); | |
222 | } | |
223 | ||
e3783c80 YN |
224 | static void __init test_find_nth_bit(void) |
225 | { | |
226 | unsigned long b, bit, cnt = 0; | |
227 | DECLARE_BITMAP(bmap, 64 * 3); | |
228 | ||
229 | bitmap_zero(bmap, 64 * 3); | |
230 | __set_bit(10, bmap); | |
231 | __set_bit(20, bmap); | |
232 | __set_bit(30, bmap); | |
233 | __set_bit(40, bmap); | |
234 | __set_bit(50, bmap); | |
235 | __set_bit(60, bmap); | |
236 | __set_bit(80, bmap); | |
237 | __set_bit(123, bmap); | |
238 | ||
239 | expect_eq_uint(10, find_nth_bit(bmap, 64 * 3, 0)); | |
240 | expect_eq_uint(20, find_nth_bit(bmap, 64 * 3, 1)); | |
241 | expect_eq_uint(30, find_nth_bit(bmap, 64 * 3, 2)); | |
242 | expect_eq_uint(40, find_nth_bit(bmap, 64 * 3, 3)); | |
243 | expect_eq_uint(50, find_nth_bit(bmap, 64 * 3, 4)); | |
244 | expect_eq_uint(60, find_nth_bit(bmap, 64 * 3, 5)); | |
245 | expect_eq_uint(80, find_nth_bit(bmap, 64 * 3, 6)); | |
246 | expect_eq_uint(123, find_nth_bit(bmap, 64 * 3, 7)); | |
247 | expect_eq_uint(64 * 3, find_nth_bit(bmap, 64 * 3, 8)); | |
248 | ||
249 | expect_eq_uint(10, find_nth_bit(bmap, 64 * 3 - 1, 0)); | |
250 | expect_eq_uint(20, find_nth_bit(bmap, 64 * 3 - 1, 1)); | |
251 | expect_eq_uint(30, find_nth_bit(bmap, 64 * 3 - 1, 2)); | |
252 | expect_eq_uint(40, find_nth_bit(bmap, 64 * 3 - 1, 3)); | |
253 | expect_eq_uint(50, find_nth_bit(bmap, 64 * 3 - 1, 4)); | |
254 | expect_eq_uint(60, find_nth_bit(bmap, 64 * 3 - 1, 5)); | |
255 | expect_eq_uint(80, find_nth_bit(bmap, 64 * 3 - 1, 6)); | |
256 | expect_eq_uint(123, find_nth_bit(bmap, 64 * 3 - 1, 7)); | |
257 | expect_eq_uint(64 * 3 - 1, find_nth_bit(bmap, 64 * 3 - 1, 8)); | |
258 | ||
259 | for_each_set_bit(bit, exp1, EXP1_IN_BITS) { | |
260 | b = find_nth_bit(exp1, EXP1_IN_BITS, cnt++); | |
261 | expect_eq_uint(b, bit); | |
262 | } | |
263 | } | |
264 | ||
978f369c AS |
265 | static void __init test_fill_set(void) |
266 | { | |
267 | DECLARE_BITMAP(bmap, 1024); | |
268 | ||
269 | /* Known way to clear all bits */ | |
270 | memset(bmap, 0x00, 128); | |
271 | ||
272 | expect_eq_pbl("", bmap, 23); | |
273 | expect_eq_pbl("", bmap, 1024); | |
274 | ||
275 | /* single-word bitmaps */ | |
276 | bitmap_set(bmap, 0, 9); | |
277 | expect_eq_pbl("0-8", bmap, 1024); | |
278 | ||
279 | bitmap_fill(bmap, 35); | |
280 | expect_eq_pbl("0-63", bmap, 1024); | |
281 | ||
282 | /* cross boundaries operations */ | |
283 | bitmap_set(bmap, 79, 19); | |
284 | expect_eq_pbl("0-63,79-97", bmap, 1024); | |
285 | ||
286 | bitmap_fill(bmap, 115); | |
287 | expect_eq_pbl("0-127", bmap, 1024); | |
288 | ||
289 | /* Zeroing entire area */ | |
290 | bitmap_fill(bmap, 1024); | |
291 | expect_eq_pbl("0-1023", bmap, 1024); | |
292 | } | |
293 | ||
fe81814c | 294 | static void __init test_copy(void) |
5fd003f5 DD |
295 | { |
296 | DECLARE_BITMAP(bmap1, 1024); | |
297 | DECLARE_BITMAP(bmap2, 1024); | |
298 | ||
299 | bitmap_zero(bmap1, 1024); | |
300 | bitmap_zero(bmap2, 1024); | |
301 | ||
302 | /* single-word bitmaps */ | |
fe81814c | 303 | bitmap_set(bmap1, 0, 19); |
5fd003f5 DD |
304 | bitmap_copy(bmap2, bmap1, 23); |
305 | expect_eq_pbl("0-18", bmap2, 1024); | |
306 | ||
fe81814c | 307 | bitmap_set(bmap2, 0, 23); |
5fd003f5 DD |
308 | bitmap_copy(bmap2, bmap1, 23); |
309 | expect_eq_pbl("0-18", bmap2, 1024); | |
310 | ||
5fd003f5 | 311 | /* multi-word bitmaps */ |
fe81814c | 312 | bitmap_set(bmap1, 0, 109); |
5fd003f5 DD |
313 | bitmap_copy(bmap2, bmap1, 1024); |
314 | expect_eq_pbl("0-108", bmap2, 1024); | |
315 | ||
316 | bitmap_fill(bmap2, 1024); | |
5fd003f5 DD |
317 | bitmap_copy(bmap2, bmap1, 1024); |
318 | expect_eq_pbl("0-108", bmap2, 1024); | |
319 | ||
320 | /* the following tests assume a 32- or 64-bit arch (even 128b | |
321 | * if we care) | |
322 | */ | |
323 | ||
324 | bitmap_fill(bmap2, 1024); | |
325 | bitmap_copy(bmap2, bmap1, 109); /* ... but 0-padded til word length */ | |
326 | expect_eq_pbl("0-108,128-1023", bmap2, 1024); | |
327 | ||
328 | bitmap_fill(bmap2, 1024); | |
329 | bitmap_copy(bmap2, bmap1, 97); /* ... but aligned on word length */ | |
330 | expect_eq_pbl("0-108,128-1023", bmap2, 1024); | |
5fd003f5 DD |
331 | } |
332 | ||
6d5d3a0c YN |
333 | static void __init test_bitmap_region(void) |
334 | { | |
335 | int pos, order; | |
336 | ||
337 | DECLARE_BITMAP(bmap, 1000); | |
338 | ||
339 | bitmap_zero(bmap, 1000); | |
340 | ||
341 | for (order = 0; order < 10; order++) { | |
342 | pos = bitmap_find_free_region(bmap, 1000, order); | |
343 | if (order == 0) | |
344 | expect_eq_uint(pos, 0); | |
345 | else | |
346 | expect_eq_uint(pos, order < 9 ? BIT(order) : -ENOMEM); | |
347 | } | |
348 | ||
349 | bitmap_release_region(bmap, 0, 0); | |
350 | for (order = 1; order < 9; order++) | |
351 | bitmap_release_region(bmap, BIT(order), order); | |
352 | ||
353 | expect_eq_uint(bitmap_weight(bmap, 1000), 0); | |
354 | } | |
355 | ||
30544ed5 AS |
356 | #define EXP2_IN_BITS (sizeof(exp2) * 8) |
357 | ||
358 | static void __init test_replace(void) | |
359 | { | |
360 | unsigned int nbits = 64; | |
69334ca5 | 361 | unsigned int nlongs = DIV_ROUND_UP(nbits, BITS_PER_LONG); |
30544ed5 AS |
362 | DECLARE_BITMAP(bmap, 1024); |
363 | ||
caa7f776 AS |
364 | BUILD_BUG_ON(EXP2_IN_BITS < nbits * 2); |
365 | ||
30544ed5 | 366 | bitmap_zero(bmap, 1024); |
69334ca5 | 367 | bitmap_replace(bmap, &exp2[0 * nlongs], &exp2[1 * nlongs], exp2_to_exp3_mask, nbits); |
30544ed5 AS |
368 | expect_eq_bitmap(bmap, exp3_0_1, nbits); |
369 | ||
370 | bitmap_zero(bmap, 1024); | |
69334ca5 | 371 | bitmap_replace(bmap, &exp2[1 * nlongs], &exp2[0 * nlongs], exp2_to_exp3_mask, nbits); |
30544ed5 AS |
372 | expect_eq_bitmap(bmap, exp3_1_0, nbits); |
373 | ||
374 | bitmap_fill(bmap, 1024); | |
69334ca5 | 375 | bitmap_replace(bmap, &exp2[0 * nlongs], &exp2[1 * nlongs], exp2_to_exp3_mask, nbits); |
30544ed5 AS |
376 | expect_eq_bitmap(bmap, exp3_0_1, nbits); |
377 | ||
378 | bitmap_fill(bmap, 1024); | |
69334ca5 | 379 | bitmap_replace(bmap, &exp2[1 * nlongs], &exp2[0 * nlongs], exp2_to_exp3_mask, nbits); |
30544ed5 AS |
380 | expect_eq_bitmap(bmap, exp3_1_0, nbits); |
381 | } | |
382 | ||
de5f8433 AS |
383 | static const unsigned long sg_mask[] __initconst = { |
384 | BITMAP_FROM_U64(0x000000000000035aULL), | |
385 | }; | |
386 | ||
387 | static const unsigned long sg_src[] __initconst = { | |
388 | BITMAP_FROM_U64(0x0000000000000667ULL), | |
389 | }; | |
390 | ||
391 | static const unsigned long sg_gather_exp[] __initconst = { | |
392 | BITMAP_FROM_U64(0x0000000000000029ULL), | |
393 | }; | |
394 | ||
395 | static const unsigned long sg_scatter_exp[] __initconst = { | |
396 | BITMAP_FROM_U64(0x000000000000021aULL), | |
397 | }; | |
398 | ||
399 | static void __init test_bitmap_sg(void) | |
400 | { | |
401 | unsigned int nbits = 64; | |
402 | DECLARE_BITMAP(bmap_gather, 100); | |
403 | DECLARE_BITMAP(bmap_scatter, 100); | |
404 | DECLARE_BITMAP(bmap_tmp, 100); | |
405 | DECLARE_BITMAP(bmap_res, 100); | |
406 | ||
407 | /* Simple gather call */ | |
408 | bitmap_zero(bmap_gather, 100); | |
409 | bitmap_gather(bmap_gather, sg_src, sg_mask, nbits); | |
410 | expect_eq_bitmap(sg_gather_exp, bmap_gather, nbits); | |
411 | ||
412 | /* Simple scatter call */ | |
413 | bitmap_zero(bmap_scatter, 100); | |
414 | bitmap_scatter(bmap_scatter, sg_src, sg_mask, nbits); | |
415 | expect_eq_bitmap(sg_scatter_exp, bmap_scatter, nbits); | |
416 | ||
417 | /* Scatter/gather relationship */ | |
418 | bitmap_zero(bmap_tmp, 100); | |
419 | bitmap_gather(bmap_tmp, bmap_scatter, sg_mask, nbits); | |
420 | bitmap_scatter(bmap_res, bmap_tmp, sg_mask, nbits); | |
421 | expect_eq_bitmap(bmap_scatter, bmap_res, nbits); | |
422 | } | |
423 | ||
7eb2e94e YN |
424 | #define PARSE_TIME 0x1 |
425 | #define NO_LEN 0x2 | |
6df0d464 YN |
426 | |
427 | struct test_bitmap_parselist{ | |
428 | const int errno; | |
429 | const char *in; | |
430 | const unsigned long *expected; | |
431 | const int nbits; | |
432 | const int flags; | |
433 | }; | |
434 | ||
6df0d464 | 435 | static const struct test_bitmap_parselist parselist_tests[] __initconst = { |
60ef6900 YN |
436 | #define step (sizeof(u64) / sizeof(unsigned long)) |
437 | ||
0ee312e3 AS |
438 | {0, "0", &exp1[0], 8, 0}, |
439 | {0, "1", &exp1[1 * step], 8, 0}, | |
440 | {0, "0-15", &exp1[2 * step], 32, 0}, | |
441 | {0, "16-31", &exp1[3 * step], 32, 0}, | |
442 | {0, "0-31:1/2", &exp1[4 * step], 32, 0}, | |
443 | {0, "1-31:1/2", &exp1[5 * step], 32, 0}, | |
444 | {0, "0-31:1/4", &exp1[6 * step], 32, 0}, | |
445 | {0, "1-31:1/4", &exp1[7 * step], 32, 0}, | |
446 | {0, "0-31:4/4", &exp1[8 * step], 32, 0}, | |
447 | {0, "1-31:4/4", &exp1[9 * step], 32, 0}, | |
448 | {0, "0-31:1/4,32-63:2/4", &exp1[10 * step], 64, 0}, | |
449 | {0, "0-31:3/4,32-63:4/4", &exp1[11 * step], 64, 0}, | |
450 | {0, " ,, 0-31:3/4 ,, 32-63:4/4 ,, ", &exp1[11 * step], 64, 0}, | |
6df0d464 YN |
451 | |
452 | {0, "0-31:1/4,32-63:2/4,64-95:3/4,96-127:4/4", exp2, 128, 0}, | |
453 | ||
454 | {0, "0-2047:128/256", NULL, 2048, PARSE_TIME}, | |
455 | ||
0ee312e3 AS |
456 | {0, "", &exp1[12 * step], 8, 0}, |
457 | {0, "\n", &exp1[12 * step], 8, 0}, | |
458 | {0, ",, ,, , , ,", &exp1[12 * step], 8, 0}, | |
459 | {0, " , ,, , , ", &exp1[12 * step], 8, 0}, | |
460 | {0, " , ,, , , \n", &exp1[12 * step], 8, 0}, | |
a4ab5050 | 461 | |
97330db3 PG |
462 | {0, "0-0", &exp1[0], 32, 0}, |
463 | {0, "1-1", &exp1[1 * step], 32, 0}, | |
464 | {0, "15-15", &exp1[13 * step], 32, 0}, | |
465 | {0, "31-31", &exp1[14 * step], 32, 0}, | |
466 | ||
467 | {0, "0-0:0/1", &exp1[12 * step], 32, 0}, | |
468 | {0, "0-0:1/1", &exp1[0], 32, 0}, | |
469 | {0, "0-0:1/31", &exp1[0], 32, 0}, | |
470 | {0, "0-0:31/31", &exp1[0], 32, 0}, | |
471 | {0, "1-1:1/1", &exp1[1 * step], 32, 0}, | |
472 | {0, "0-15:16/31", &exp1[2 * step], 32, 0}, | |
473 | {0, "15-15:1/2", &exp1[13 * step], 32, 0}, | |
474 | {0, "15-15:31/31", &exp1[13 * step], 32, 0}, | |
475 | {0, "15-31:1/31", &exp1[13 * step], 32, 0}, | |
476 | {0, "16-31:16/31", &exp1[3 * step], 32, 0}, | |
477 | {0, "31-31:31/31", &exp1[14 * step], 32, 0}, | |
478 | ||
99c58d1a PG |
479 | {0, "N-N", &exp1[14 * step], 32, 0}, |
480 | {0, "0-0:1/N", &exp1[0], 32, 0}, | |
481 | {0, "0-0:N/N", &exp1[0], 32, 0}, | |
482 | {0, "0-15:16/N", &exp1[2 * step], 32, 0}, | |
483 | {0, "15-15:N/N", &exp1[13 * step], 32, 0}, | |
484 | {0, "15-N:1/N", &exp1[13 * step], 32, 0}, | |
485 | {0, "16-N:16/N", &exp1[3 * step], 32, 0}, | |
486 | {0, "N-N:N/N", &exp1[14 * step], 32, 0}, | |
487 | ||
488 | {0, "0-N:1/3,1-N:1/3,2-N:1/3", &exp1[8 * step], 32, 0}, | |
97330db3 PG |
489 | {0, "0-31:1/3,1-31:1/3,2-31:1/3", &exp1[8 * step], 32, 0}, |
490 | {0, "1-10:8/12,8-31:24/29,0-31:0/3", &exp1[9 * step], 32, 0}, | |
491 | ||
b18def12 YN |
492 | {0, "all", &exp1[8 * step], 32, 0}, |
493 | {0, "0, 1, all, ", &exp1[8 * step], 32, 0}, | |
494 | {0, "all:1/2", &exp1[4 * step], 32, 0}, | |
495 | {0, "ALL:1/2", &exp1[4 * step], 32, 0}, | |
496 | {-EINVAL, "al", NULL, 8, 0}, | |
497 | {-EINVAL, "alll", NULL, 8, 0}, | |
498 | ||
6df0d464 YN |
499 | {-EINVAL, "-1", NULL, 8, 0}, |
500 | {-EINVAL, "-0", NULL, 8, 0}, | |
501 | {-EINVAL, "10-1", NULL, 8, 0}, | |
6fef5905 PG |
502 | {-ERANGE, "8-8", NULL, 8, 0}, |
503 | {-ERANGE, "0-31", NULL, 8, 0}, | |
494215fb PG |
504 | {-EINVAL, "0-31:", NULL, 32, 0}, |
505 | {-EINVAL, "0-31:0", NULL, 32, 0}, | |
506 | {-EINVAL, "0-31:0/", NULL, 32, 0}, | |
507 | {-EINVAL, "0-31:0/0", NULL, 32, 0}, | |
508 | {-EINVAL, "0-31:1/0", NULL, 32, 0}, | |
509 | {-EINVAL, "0-31:10/1", NULL, 32, 0}, | |
a4ab5050 YN |
510 | {-EOVERFLOW, "0-98765432123456789:10/1", NULL, 8, 0}, |
511 | ||
512 | {-EINVAL, "a-31", NULL, 8, 0}, | |
513 | {-EINVAL, "0-a1", NULL, 8, 0}, | |
514 | {-EINVAL, "a-31:10/1", NULL, 8, 0}, | |
515 | {-EINVAL, "0-31:a/1", NULL, 8, 0}, | |
516 | {-EINVAL, "0-\n", NULL, 8, 0}, | |
54224044 | 517 | |
6df0d464 YN |
518 | }; |
519 | ||
81b1e242 | 520 | static void __init test_bitmap_parselist(void) |
6df0d464 YN |
521 | { |
522 | int i; | |
523 | int err; | |
0c2111a5 | 524 | ktime_t time; |
6df0d464 YN |
525 | DECLARE_BITMAP(bmap, 2048); |
526 | ||
527 | for (i = 0; i < ARRAY_SIZE(parselist_tests); i++) { | |
528 | #define ptest parselist_tests[i] | |
529 | ||
81b1e242 CH |
530 | time = ktime_get(); |
531 | err = bitmap_parselist(ptest.in, bmap, ptest.nbits); | |
532 | time = ktime_get() - time; | |
6df0d464 YN |
533 | |
534 | if (err != ptest.errno) { | |
81b1e242 CH |
535 | pr_err("parselist: %d: input is %s, errno is %d, expected %d\n", |
536 | i, ptest.in, err, ptest.errno); | |
c4c14c29 | 537 | failed_tests++; |
6df0d464 YN |
538 | continue; |
539 | } | |
540 | ||
541 | if (!err && ptest.expected | |
542 | && !__bitmap_equal(bmap, ptest.expected, ptest.nbits)) { | |
81b1e242 CH |
543 | pr_err("parselist: %d: input is %s, result is 0x%lx, expected 0x%lx\n", |
544 | i, ptest.in, bmap[0], | |
6ea86bdf | 545 | *ptest.expected); |
c4c14c29 | 546 | failed_tests++; |
6df0d464 YN |
547 | continue; |
548 | } | |
549 | ||
550 | if (ptest.flags & PARSE_TIME) | |
81b1e242 CH |
551 | pr_err("parselist: %d: input is '%s' OK, Time: %llu\n", |
552 | i, ptest.in, time); | |
54224044 AS |
553 | |
554 | #undef ptest | |
6df0d464 YN |
555 | } |
556 | } | |
557 | ||
db731300 YN |
558 | static void __init test_bitmap_printlist(void) |
559 | { | |
560 | unsigned long *bmap = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
561 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
562 | char expected[256]; | |
563 | int ret, slen; | |
564 | ktime_t time; | |
565 | ||
566 | if (!buf || !bmap) | |
567 | goto out; | |
568 | ||
569 | memset(bmap, -1, PAGE_SIZE); | |
570 | slen = snprintf(expected, 256, "0-%ld", PAGE_SIZE * 8 - 1); | |
571 | if (slen < 0) | |
572 | goto out; | |
573 | ||
574 | time = ktime_get(); | |
575 | ret = bitmap_print_to_pagebuf(true, buf, bmap, PAGE_SIZE * 8); | |
576 | time = ktime_get() - time; | |
577 | ||
578 | if (ret != slen + 1) { | |
579 | pr_err("bitmap_print_to_pagebuf: result is %d, expected %d\n", ret, slen); | |
c4c14c29 | 580 | failed_tests++; |
db731300 YN |
581 | goto out; |
582 | } | |
583 | ||
584 | if (strncmp(buf, expected, slen)) { | |
585 | pr_err("bitmap_print_to_pagebuf: result is %s, expected %s\n", buf, expected); | |
c4c14c29 | 586 | failed_tests++; |
db731300 YN |
587 | goto out; |
588 | } | |
589 | ||
590 | pr_err("bitmap_print_to_pagebuf: input is '%s', Time: %llu\n", buf, time); | |
591 | out: | |
592 | kfree(buf); | |
593 | kfree(bmap); | |
594 | } | |
595 | ||
7eb2e94e YN |
596 | static const unsigned long parse_test[] __initconst = { |
597 | BITMAP_FROM_U64(0), | |
598 | BITMAP_FROM_U64(1), | |
599 | BITMAP_FROM_U64(0xdeadbeef), | |
600 | BITMAP_FROM_U64(0x100000000ULL), | |
601 | }; | |
602 | ||
603 | static const unsigned long parse_test2[] __initconst = { | |
604 | BITMAP_FROM_U64(0x100000000ULL), BITMAP_FROM_U64(0xdeadbeef), | |
605 | BITMAP_FROM_U64(0x100000000ULL), BITMAP_FROM_U64(0xbaadf00ddeadbeef), | |
606 | BITMAP_FROM_U64(0x100000000ULL), BITMAP_FROM_U64(0x0badf00ddeadbeef), | |
607 | }; | |
608 | ||
609 | static const struct test_bitmap_parselist parse_tests[] __initconst = { | |
809e308f YN |
610 | {0, "", &parse_test[0 * step], 32, 0}, |
611 | {0, " ", &parse_test[0 * step], 32, 0}, | |
7eb2e94e | 612 | {0, "0", &parse_test[0 * step], 32, 0}, |
809e308f | 613 | {0, "0\n", &parse_test[0 * step], 32, 0}, |
7eb2e94e YN |
614 | {0, "1", &parse_test[1 * step], 32, 0}, |
615 | {0, "deadbeef", &parse_test[2 * step], 32, 0}, | |
616 | {0, "1,0", &parse_test[3 * step], 33, 0}, | |
809e308f | 617 | {0, "deadbeef,\n,0,1", &parse_test[2 * step], 96, 0}, |
7eb2e94e YN |
618 | |
619 | {0, "deadbeef,1,0", &parse_test2[0 * 2 * step], 96, 0}, | |
620 | {0, "baadf00d,deadbeef,1,0", &parse_test2[1 * 2 * step], 128, 0}, | |
621 | {0, "badf00d,deadbeef,1,0", &parse_test2[2 * 2 * step], 124, 0}, | |
809e308f YN |
622 | {0, "badf00d,deadbeef,1,0", &parse_test2[2 * 2 * step], 124, NO_LEN}, |
623 | {0, " badf00d,deadbeef,1,0 ", &parse_test2[2 * 2 * step], 124, 0}, | |
624 | {0, " , badf00d,deadbeef,1,0 , ", &parse_test2[2 * 2 * step], 124, 0}, | |
625 | {0, " , badf00d, ,, ,,deadbeef,1,0 , ", &parse_test2[2 * 2 * step], 124, 0}, | |
7eb2e94e YN |
626 | |
627 | {-EINVAL, "goodfood,deadbeef,1,0", NULL, 128, 0}, | |
628 | {-EOVERFLOW, "3,0", NULL, 33, 0}, | |
629 | {-EOVERFLOW, "123badf00d,deadbeef,1,0", NULL, 128, 0}, | |
630 | {-EOVERFLOW, "badf00d,deadbeef,1,0", NULL, 90, 0}, | |
631 | {-EOVERFLOW, "fbadf00d,deadbeef,1,0", NULL, 95, 0}, | |
632 | {-EOVERFLOW, "badf00d,deadbeef,1,0", NULL, 100, 0}, | |
633 | #undef step | |
634 | }; | |
635 | ||
81b1e242 | 636 | static void __init test_bitmap_parse(void) |
7eb2e94e YN |
637 | { |
638 | int i; | |
639 | int err; | |
640 | ktime_t time; | |
641 | DECLARE_BITMAP(bmap, 2048); | |
7eb2e94e YN |
642 | |
643 | for (i = 0; i < ARRAY_SIZE(parse_tests); i++) { | |
644 | struct test_bitmap_parselist test = parse_tests[i]; | |
81b1e242 | 645 | size_t len = test.flags & NO_LEN ? UINT_MAX : strlen(test.in); |
7eb2e94e | 646 | |
81b1e242 CH |
647 | time = ktime_get(); |
648 | err = bitmap_parse(test.in, len, bmap, test.nbits); | |
649 | time = ktime_get() - time; | |
7eb2e94e YN |
650 | |
651 | if (err != test.errno) { | |
81b1e242 CH |
652 | pr_err("parse: %d: input is %s, errno is %d, expected %d\n", |
653 | i, test.in, err, test.errno); | |
c4c14c29 | 654 | failed_tests++; |
7eb2e94e YN |
655 | continue; |
656 | } | |
657 | ||
658 | if (!err && test.expected | |
659 | && !__bitmap_equal(bmap, test.expected, test.nbits)) { | |
81b1e242 CH |
660 | pr_err("parse: %d: input is %s, result is 0x%lx, expected 0x%lx\n", |
661 | i, test.in, bmap[0], | |
7eb2e94e | 662 | *test.expected); |
c4c14c29 | 663 | failed_tests++; |
7eb2e94e YN |
664 | continue; |
665 | } | |
666 | ||
667 | if (test.flags & PARSE_TIME) | |
81b1e242 CH |
668 | pr_err("parse: %d: input is '%s' OK, Time: %llu\n", |
669 | i, test.in, time); | |
7eb2e94e YN |
670 | } |
671 | } | |
672 | ||
3aa56885 | 673 | static void __init test_bitmap_arr32(void) |
5fd003f5 | 674 | { |
f6f66c1b | 675 | unsigned int nbits, next_bit; |
a4881d1c AS |
676 | u32 arr[EXP1_IN_BITS / 32]; |
677 | DECLARE_BITMAP(bmap2, EXP1_IN_BITS); | |
3aa56885 YN |
678 | |
679 | memset(arr, 0xa5, sizeof(arr)); | |
680 | ||
a4881d1c | 681 | for (nbits = 0; nbits < EXP1_IN_BITS; ++nbits) { |
0ee312e3 | 682 | bitmap_to_arr32(arr, exp1, nbits); |
3aa56885 | 683 | bitmap_from_arr32(bmap2, arr, nbits); |
0ee312e3 | 684 | expect_eq_bitmap(bmap2, exp1, nbits); |
3aa56885 YN |
685 | |
686 | next_bit = find_next_bit(bmap2, | |
687 | round_up(nbits, BITS_PER_LONG), nbits); | |
c4c14c29 | 688 | if (next_bit < round_up(nbits, BITS_PER_LONG)) { |
3aa56885 YN |
689 | pr_err("bitmap_copy_arr32(nbits == %d:" |
690 | " tail is not safely cleared: %d\n", | |
691 | nbits, next_bit); | |
c4c14c29 YN |
692 | failed_tests++; |
693 | } | |
3aa56885 | 694 | |
a4881d1c | 695 | if (nbits < EXP1_IN_BITS - 32) |
3aa56885 YN |
696 | expect_eq_uint(arr[DIV_ROUND_UP(nbits, 32)], |
697 | 0xa5a5a5a5); | |
5fd003f5 DD |
698 | } |
699 | } | |
700 | ||
2c523550 YN |
701 | static void __init test_bitmap_arr64(void) |
702 | { | |
703 | unsigned int nbits, next_bit; | |
704 | u64 arr[EXP1_IN_BITS / 64]; | |
705 | DECLARE_BITMAP(bmap2, EXP1_IN_BITS); | |
706 | ||
707 | memset(arr, 0xa5, sizeof(arr)); | |
708 | ||
709 | for (nbits = 0; nbits < EXP1_IN_BITS; ++nbits) { | |
710 | memset(bmap2, 0xff, sizeof(arr)); | |
711 | bitmap_to_arr64(arr, exp1, nbits); | |
712 | bitmap_from_arr64(bmap2, arr, nbits); | |
713 | expect_eq_bitmap(bmap2, exp1, nbits); | |
714 | ||
715 | next_bit = find_next_bit(bmap2, round_up(nbits, BITS_PER_LONG), nbits); | |
c4c14c29 | 716 | if (next_bit < round_up(nbits, BITS_PER_LONG)) { |
2c523550 YN |
717 | pr_err("bitmap_copy_arr64(nbits == %d:" |
718 | " tail is not safely cleared: %d\n", nbits, next_bit); | |
c4c14c29 YN |
719 | failed_tests++; |
720 | } | |
2c523550 | 721 | |
30fd8cdf | 722 | if ((nbits % 64) && |
c4c14c29 | 723 | (arr[(nbits - 1) / 64] & ~GENMASK_ULL((nbits - 1) % 64, 0))) { |
30fd8cdf AL |
724 | pr_err("bitmap_to_arr64(nbits == %d): tail is not safely cleared: 0x%016llx (must be 0x%016llx)\n", |
725 | nbits, arr[(nbits - 1) / 64], | |
726 | GENMASK_ULL((nbits - 1) % 64, 0)); | |
c4c14c29 YN |
727 | failed_tests++; |
728 | } | |
30fd8cdf | 729 | |
2c523550 YN |
730 | if (nbits < EXP1_IN_BITS - 64) |
731 | expect_eq_uint(arr[DIV_ROUND_UP(nbits, 64)], 0xa5a5a5a5); | |
732 | } | |
733 | } | |
734 | ||
3cc78125 MW |
735 | static void noinline __init test_mem_optimisations(void) |
736 | { | |
737 | DECLARE_BITMAP(bmap1, 1024); | |
738 | DECLARE_BITMAP(bmap2, 1024); | |
739 | unsigned int start, nbits; | |
740 | ||
741 | for (start = 0; start < 1024; start += 8) { | |
3cc78125 | 742 | for (nbits = 0; nbits < 1024 - start; nbits += 8) { |
1e3054b9 MW |
743 | memset(bmap1, 0x5a, sizeof(bmap1)); |
744 | memset(bmap2, 0x5a, sizeof(bmap2)); | |
745 | ||
3cc78125 MW |
746 | bitmap_set(bmap1, start, nbits); |
747 | __bitmap_set(bmap2, start, nbits); | |
1e3054b9 | 748 | if (!bitmap_equal(bmap1, bmap2, 1024)) { |
3cc78125 | 749 | printk("set not equal %d %d\n", start, nbits); |
1e3054b9 MW |
750 | failed_tests++; |
751 | } | |
752 | if (!__bitmap_equal(bmap1, bmap2, 1024)) { | |
3cc78125 | 753 | printk("set not __equal %d %d\n", start, nbits); |
1e3054b9 MW |
754 | failed_tests++; |
755 | } | |
3cc78125 MW |
756 | |
757 | bitmap_clear(bmap1, start, nbits); | |
758 | __bitmap_clear(bmap2, start, nbits); | |
1e3054b9 | 759 | if (!bitmap_equal(bmap1, bmap2, 1024)) { |
3cc78125 | 760 | printk("clear not equal %d %d\n", start, nbits); |
1e3054b9 MW |
761 | failed_tests++; |
762 | } | |
763 | if (!__bitmap_equal(bmap1, bmap2, 1024)) { | |
3cc78125 MW |
764 | printk("clear not __equal %d %d\n", start, |
765 | nbits); | |
1e3054b9 MW |
766 | failed_tests++; |
767 | } | |
3cc78125 MW |
768 | } |
769 | } | |
770 | } | |
771 | ||
e4aa168d WBG |
772 | static const unsigned char clump_exp[] __initconst = { |
773 | 0x01, /* 1 bit set */ | |
774 | 0x02, /* non-edge 1 bit set */ | |
775 | 0x00, /* zero bits set */ | |
776 | 0x38, /* 3 bits set across 4-bit boundary */ | |
777 | 0x38, /* Repeated clump */ | |
778 | 0x0F, /* 4 bits set */ | |
779 | 0xFF, /* all bits set */ | |
780 | 0x05, /* non-adjacent 2 bits set */ | |
781 | }; | |
782 | ||
783 | static void __init test_for_each_set_clump8(void) | |
784 | { | |
785 | #define CLUMP_EXP_NUMBITS 64 | |
786 | DECLARE_BITMAP(bits, CLUMP_EXP_NUMBITS); | |
787 | unsigned int start; | |
788 | unsigned long clump; | |
789 | ||
790 | /* set bitmap to test case */ | |
791 | bitmap_zero(bits, CLUMP_EXP_NUMBITS); | |
792 | bitmap_set(bits, 0, 1); /* 0x01 */ | |
793 | bitmap_set(bits, 9, 1); /* 0x02 */ | |
794 | bitmap_set(bits, 27, 3); /* 0x28 */ | |
795 | bitmap_set(bits, 35, 3); /* 0x28 */ | |
796 | bitmap_set(bits, 40, 4); /* 0x0F */ | |
797 | bitmap_set(bits, 48, 8); /* 0xFF */ | |
798 | bitmap_set(bits, 56, 1); /* 0x05 - part 1 */ | |
799 | bitmap_set(bits, 58, 1); /* 0x05 - part 2 */ | |
800 | ||
801 | for_each_set_clump8(start, clump, bits, CLUMP_EXP_NUMBITS) | |
802 | expect_eq_clump8(start, CLUMP_EXP_NUMBITS, clump_exp, &clump); | |
803 | } | |
804 | ||
8173aa26 YN |
805 | static void __init test_for_each_set_bit_wrap(void) |
806 | { | |
807 | DECLARE_BITMAP(orig, 500); | |
808 | DECLARE_BITMAP(copy, 500); | |
809 | unsigned int wr, bit; | |
810 | ||
811 | bitmap_zero(orig, 500); | |
812 | ||
813 | /* Set individual bits */ | |
814 | for (bit = 0; bit < 500; bit += 10) | |
815 | bitmap_set(orig, bit, 1); | |
816 | ||
817 | /* Set range of bits */ | |
818 | bitmap_set(orig, 100, 50); | |
819 | ||
820 | for (wr = 0; wr < 500; wr++) { | |
821 | bitmap_zero(copy, 500); | |
822 | ||
823 | for_each_set_bit_wrap(bit, orig, 500, wr) | |
824 | bitmap_set(copy, bit, 1); | |
825 | ||
826 | expect_eq_bitmap(orig, copy, 500); | |
827 | } | |
828 | } | |
829 | ||
830 | static void __init test_for_each_set_bit(void) | |
831 | { | |
832 | DECLARE_BITMAP(orig, 500); | |
833 | DECLARE_BITMAP(copy, 500); | |
834 | unsigned int bit; | |
835 | ||
836 | bitmap_zero(orig, 500); | |
837 | bitmap_zero(copy, 500); | |
838 | ||
839 | /* Set individual bits */ | |
840 | for (bit = 0; bit < 500; bit += 10) | |
841 | bitmap_set(orig, bit, 1); | |
842 | ||
843 | /* Set range of bits */ | |
844 | bitmap_set(orig, 100, 50); | |
845 | ||
846 | for_each_set_bit(bit, orig, 500) | |
847 | bitmap_set(copy, bit, 1); | |
848 | ||
849 | expect_eq_bitmap(orig, copy, 500); | |
850 | } | |
851 | ||
852 | static void __init test_for_each_set_bit_from(void) | |
853 | { | |
854 | DECLARE_BITMAP(orig, 500); | |
855 | DECLARE_BITMAP(copy, 500); | |
856 | unsigned int wr, bit; | |
857 | ||
858 | bitmap_zero(orig, 500); | |
859 | ||
860 | /* Set individual bits */ | |
861 | for (bit = 0; bit < 500; bit += 10) | |
862 | bitmap_set(orig, bit, 1); | |
863 | ||
864 | /* Set range of bits */ | |
865 | bitmap_set(orig, 100, 50); | |
866 | ||
867 | for (wr = 0; wr < 500; wr++) { | |
868 | DECLARE_BITMAP(tmp, 500); | |
869 | ||
870 | bitmap_zero(copy, 500); | |
871 | bit = wr; | |
872 | ||
873 | for_each_set_bit_from(bit, orig, 500) | |
874 | bitmap_set(copy, bit, 1); | |
875 | ||
876 | bitmap_copy(tmp, orig, 500); | |
877 | bitmap_clear(tmp, 0, wr); | |
878 | expect_eq_bitmap(tmp, copy, 500); | |
879 | } | |
880 | } | |
881 | ||
882 | static void __init test_for_each_clear_bit(void) | |
883 | { | |
884 | DECLARE_BITMAP(orig, 500); | |
885 | DECLARE_BITMAP(copy, 500); | |
886 | unsigned int bit; | |
887 | ||
888 | bitmap_fill(orig, 500); | |
889 | bitmap_fill(copy, 500); | |
890 | ||
891 | /* Set individual bits */ | |
892 | for (bit = 0; bit < 500; bit += 10) | |
893 | bitmap_clear(orig, bit, 1); | |
894 | ||
895 | /* Set range of bits */ | |
896 | bitmap_clear(orig, 100, 50); | |
897 | ||
898 | for_each_clear_bit(bit, orig, 500) | |
899 | bitmap_clear(copy, bit, 1); | |
900 | ||
901 | expect_eq_bitmap(orig, copy, 500); | |
902 | } | |
903 | ||
904 | static void __init test_for_each_clear_bit_from(void) | |
905 | { | |
906 | DECLARE_BITMAP(orig, 500); | |
907 | DECLARE_BITMAP(copy, 500); | |
908 | unsigned int wr, bit; | |
909 | ||
910 | bitmap_fill(orig, 500); | |
911 | ||
912 | /* Set individual bits */ | |
913 | for (bit = 0; bit < 500; bit += 10) | |
914 | bitmap_clear(orig, bit, 1); | |
915 | ||
916 | /* Set range of bits */ | |
917 | bitmap_clear(orig, 100, 50); | |
918 | ||
919 | for (wr = 0; wr < 500; wr++) { | |
920 | DECLARE_BITMAP(tmp, 500); | |
921 | ||
922 | bitmap_fill(copy, 500); | |
923 | bit = wr; | |
924 | ||
925 | for_each_clear_bit_from(bit, orig, 500) | |
926 | bitmap_clear(copy, bit, 1); | |
927 | ||
928 | bitmap_copy(tmp, orig, 500); | |
929 | bitmap_set(tmp, 0, wr); | |
930 | expect_eq_bitmap(tmp, copy, 500); | |
931 | } | |
932 | } | |
933 | ||
934 | static void __init test_for_each_set_bitrange(void) | |
935 | { | |
936 | DECLARE_BITMAP(orig, 500); | |
937 | DECLARE_BITMAP(copy, 500); | |
938 | unsigned int s, e; | |
939 | ||
940 | bitmap_zero(orig, 500); | |
941 | bitmap_zero(copy, 500); | |
942 | ||
943 | /* Set individual bits */ | |
944 | for (s = 0; s < 500; s += 10) | |
945 | bitmap_set(orig, s, 1); | |
946 | ||
947 | /* Set range of bits */ | |
948 | bitmap_set(orig, 100, 50); | |
949 | ||
950 | for_each_set_bitrange(s, e, orig, 500) | |
951 | bitmap_set(copy, s, e-s); | |
952 | ||
953 | expect_eq_bitmap(orig, copy, 500); | |
954 | } | |
955 | ||
956 | static void __init test_for_each_clear_bitrange(void) | |
957 | { | |
958 | DECLARE_BITMAP(orig, 500); | |
959 | DECLARE_BITMAP(copy, 500); | |
960 | unsigned int s, e; | |
961 | ||
962 | bitmap_fill(orig, 500); | |
963 | bitmap_fill(copy, 500); | |
964 | ||
965 | /* Set individual bits */ | |
966 | for (s = 0; s < 500; s += 10) | |
967 | bitmap_clear(orig, s, 1); | |
968 | ||
969 | /* Set range of bits */ | |
970 | bitmap_clear(orig, 100, 50); | |
971 | ||
972 | for_each_clear_bitrange(s, e, orig, 500) | |
973 | bitmap_clear(copy, s, e-s); | |
974 | ||
975 | expect_eq_bitmap(orig, copy, 500); | |
976 | } | |
977 | ||
978 | static void __init test_for_each_set_bitrange_from(void) | |
979 | { | |
980 | DECLARE_BITMAP(orig, 500); | |
981 | DECLARE_BITMAP(copy, 500); | |
982 | unsigned int wr, s, e; | |
983 | ||
984 | bitmap_zero(orig, 500); | |
985 | ||
986 | /* Set individual bits */ | |
987 | for (s = 0; s < 500; s += 10) | |
988 | bitmap_set(orig, s, 1); | |
989 | ||
990 | /* Set range of bits */ | |
991 | bitmap_set(orig, 100, 50); | |
992 | ||
993 | for (wr = 0; wr < 500; wr++) { | |
994 | DECLARE_BITMAP(tmp, 500); | |
995 | ||
996 | bitmap_zero(copy, 500); | |
997 | s = wr; | |
998 | ||
999 | for_each_set_bitrange_from(s, e, orig, 500) | |
1000 | bitmap_set(copy, s, e - s); | |
1001 | ||
1002 | bitmap_copy(tmp, orig, 500); | |
1003 | bitmap_clear(tmp, 0, wr); | |
1004 | expect_eq_bitmap(tmp, copy, 500); | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | static void __init test_for_each_clear_bitrange_from(void) | |
1009 | { | |
1010 | DECLARE_BITMAP(orig, 500); | |
1011 | DECLARE_BITMAP(copy, 500); | |
1012 | unsigned int wr, s, e; | |
1013 | ||
1014 | bitmap_fill(orig, 500); | |
1015 | ||
1016 | /* Set individual bits */ | |
1017 | for (s = 0; s < 500; s += 10) | |
1018 | bitmap_clear(orig, s, 1); | |
1019 | ||
1020 | /* Set range of bits */ | |
1021 | bitmap_set(orig, 100, 50); | |
1022 | ||
1023 | for (wr = 0; wr < 500; wr++) { | |
1024 | DECLARE_BITMAP(tmp, 500); | |
1025 | ||
1026 | bitmap_fill(copy, 500); | |
1027 | s = wr; | |
1028 | ||
1029 | for_each_clear_bitrange_from(s, e, orig, 500) | |
1030 | bitmap_clear(copy, s, e - s); | |
1031 | ||
1032 | bitmap_copy(tmp, orig, 500); | |
1033 | bitmap_set(tmp, 0, wr); | |
1034 | expect_eq_bitmap(tmp, copy, 500); | |
1035 | } | |
1036 | } | |
1037 | ||
bcb32a1d SB |
1038 | struct test_bitmap_cut { |
1039 | unsigned int first; | |
1040 | unsigned int cut; | |
1041 | unsigned int nbits; | |
1042 | unsigned long in[4]; | |
1043 | unsigned long expected[4]; | |
1044 | }; | |
1045 | ||
1046 | static struct test_bitmap_cut test_cut[] = { | |
1047 | { 0, 0, 8, { 0x0000000aUL, }, { 0x0000000aUL, }, }, | |
1048 | { 0, 0, 32, { 0xdadadeadUL, }, { 0xdadadeadUL, }, }, | |
1049 | { 0, 3, 8, { 0x000000aaUL, }, { 0x00000015UL, }, }, | |
1050 | { 3, 3, 8, { 0x000000aaUL, }, { 0x00000012UL, }, }, | |
1051 | { 0, 1, 32, { 0xa5a5a5a5UL, }, { 0x52d2d2d2UL, }, }, | |
1052 | { 0, 8, 32, { 0xdeadc0deUL, }, { 0x00deadc0UL, }, }, | |
1053 | { 1, 1, 32, { 0x5a5a5a5aUL, }, { 0x2d2d2d2cUL, }, }, | |
1054 | { 0, 15, 32, { 0xa5a5a5a5UL, }, { 0x00014b4bUL, }, }, | |
1055 | { 0, 16, 32, { 0xa5a5a5a5UL, }, { 0x0000a5a5UL, }, }, | |
1056 | { 15, 15, 32, { 0xa5a5a5a5UL, }, { 0x000125a5UL, }, }, | |
1057 | { 15, 16, 32, { 0xa5a5a5a5UL, }, { 0x0000a5a5UL, }, }, | |
1058 | { 16, 15, 32, { 0xa5a5a5a5UL, }, { 0x0001a5a5UL, }, }, | |
1059 | ||
1060 | { BITS_PER_LONG, BITS_PER_LONG, BITS_PER_LONG, | |
1061 | { 0xa5a5a5a5UL, 0xa5a5a5a5UL, }, | |
1062 | { 0xa5a5a5a5UL, 0xa5a5a5a5UL, }, | |
1063 | }, | |
1064 | { 1, BITS_PER_LONG - 1, BITS_PER_LONG, | |
1065 | { 0xa5a5a5a5UL, 0xa5a5a5a5UL, }, | |
1066 | { 0x00000001UL, 0x00000001UL, }, | |
1067 | }, | |
1068 | ||
1069 | { 0, BITS_PER_LONG * 2, BITS_PER_LONG * 2 + 1, | |
1070 | { 0xa5a5a5a5UL, 0x00000001UL, 0x00000001UL, 0x00000001UL }, | |
1071 | { 0x00000001UL, }, | |
1072 | }, | |
1073 | { 16, BITS_PER_LONG * 2 + 1, BITS_PER_LONG * 2 + 1 + 16, | |
1074 | { 0x0000ffffUL, 0x5a5a5a5aUL, 0x5a5a5a5aUL, 0x5a5a5a5aUL }, | |
1075 | { 0x2d2dffffUL, }, | |
1076 | }, | |
1077 | }; | |
1078 | ||
1079 | static void __init test_bitmap_cut(void) | |
1080 | { | |
1081 | unsigned long b[5], *in = &b[1], *out = &b[0]; /* Partial overlap */ | |
1082 | int i; | |
1083 | ||
1084 | for (i = 0; i < ARRAY_SIZE(test_cut); i++) { | |
1085 | struct test_bitmap_cut *t = &test_cut[i]; | |
1086 | ||
1087 | memcpy(in, t->in, sizeof(t->in)); | |
1088 | ||
1089 | bitmap_cut(out, in, t->first, t->cut, t->nbits); | |
1090 | ||
1091 | expect_eq_bitmap(t->expected, out, t->nbits); | |
1092 | } | |
1093 | } | |
1094 | ||
291f93ca BS |
1095 | struct test_bitmap_print { |
1096 | const unsigned long *bitmap; | |
1097 | unsigned long nbits; | |
1098 | const char *mask; | |
1099 | const char *list; | |
1100 | }; | |
1101 | ||
1102 | static const unsigned long small_bitmap[] __initconst = { | |
1103 | BITMAP_FROM_U64(0x3333333311111111ULL), | |
1104 | }; | |
1105 | ||
1106 | static const char small_mask[] __initconst = "33333333,11111111\n"; | |
1107 | 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"; | |
1108 | ||
1109 | static const unsigned long large_bitmap[] __initconst = { | |
1110 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1111 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1112 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1113 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1114 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1115 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1116 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1117 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1118 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1119 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1120 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1121 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1122 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1123 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1124 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1125 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1126 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1127 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1128 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1129 | BITMAP_FROM_U64(0x3333333311111111ULL), BITMAP_FROM_U64(0x3333333311111111ULL), | |
1130 | }; | |
1131 | ||
1132 | static const char large_mask[] __initconst = "33333333,11111111,33333333,11111111," | |
1133 | "33333333,11111111,33333333,11111111," | |
1134 | "33333333,11111111,33333333,11111111," | |
1135 | "33333333,11111111,33333333,11111111," | |
1136 | "33333333,11111111,33333333,11111111," | |
1137 | "33333333,11111111,33333333,11111111," | |
1138 | "33333333,11111111,33333333,11111111," | |
1139 | "33333333,11111111,33333333,11111111," | |
1140 | "33333333,11111111,33333333,11111111," | |
1141 | "33333333,11111111,33333333,11111111," | |
1142 | "33333333,11111111,33333333,11111111," | |
1143 | "33333333,11111111,33333333,11111111," | |
1144 | "33333333,11111111,33333333,11111111," | |
1145 | "33333333,11111111,33333333,11111111," | |
1146 | "33333333,11111111,33333333,11111111," | |
1147 | "33333333,11111111,33333333,11111111," | |
1148 | "33333333,11111111,33333333,11111111," | |
1149 | "33333333,11111111,33333333,11111111," | |
1150 | "33333333,11111111,33333333,11111111," | |
1151 | "33333333,11111111,33333333,11111111\n"; | |
1152 | ||
1153 | static const char large_list[] __initconst = /* more than 4KB */ | |
1154 | "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" | |
1155 | "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" | |
1156 | "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" | |
1157 | "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" | |
1158 | "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" | |
1159 | "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" | |
1160 | "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" | |
1161 | "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" | |
1162 | "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" | |
1163 | "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" | |
1164 | "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" | |
1165 | "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" | |
1166 | "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-" | |
1167 | "1001,1004-1005,1008-1009,1012-1013,1016-1017,1020-1021,1024,1028,1032,1036,1040,1044,1048,1052,1056-1057,1060-10" | |
1168 | "61,1064-1065,1068-1069,1072-1073,1076-1077,1080-1081,1084-1085,1088,1092,1096,1100,1104,1108,1112,1116,1120-1121" | |
1169 | ",1124-1125,1128-1129,1132-1133,1136-1137,1140-1141,1144-1145,1148-1149,1152,1156,1160,1164,1168,1172,1176,1180,1" | |
1170 | "184-1185,1188-1189,1192-1193,1196-1197,1200-1201,1204-1205,1208-1209,1212-1213,1216,1220,1224,1228,1232,1236,124" | |
1171 | "0,1244,1248-1249,1252-1253,1256-1257,1260-1261,1264-1265,1268-1269,1272-1273,1276-1277,1280,1284,1288,1292,1296," | |
1172 | "1300,1304,1308,1312-1313,1316-1317,1320-1321,1324-1325,1328-1329,1332-1333,1336-1337,1340-1341,1344,1348,1352,13" | |
1173 | "56,1360,1364,1368,1372,1376-1377,1380-1381,1384-1385,1388-1389,1392-1393,1396-1397,1400-1401,1404-1405,1408,1412" | |
1174 | ",1416,1420,1424,1428,1432,1436,1440-1441,1444-1445,1448-1449,1452-1453,1456-1457,1460-1461,1464-1465,1468-1469,1" | |
1175 | "472,1476,1480,1484,1488,1492,1496,1500,1504-1505,1508-1509,1512-1513,1516-1517,1520-1521,1524-1525,1528-1529,153" | |
1176 | "2-1533,1536,1540,1544,1548,1552,1556,1560,1564,1568-1569,1572-1573,1576-1577,1580-1581,1584-1585,1588-1589,1592-" | |
1177 | "1593,1596-1597,1600,1604,1608,1612,1616,1620,1624,1628,1632-1633,1636-1637,1640-1641,1644-1645,1648-1649,1652-16" | |
1178 | "53,1656-1657,1660-1661,1664,1668,1672,1676,1680,1684,1688,1692,1696-1697,1700-1701,1704-1705,1708-1709,1712-1713" | |
1179 | ",1716-1717,1720-1721,1724-1725,1728,1732,1736,1740,1744,1748,1752,1756,1760-1761,1764-1765,1768-1769,1772-1773,1" | |
1180 | "776-1777,1780-1781,1784-1785,1788-1789,1792,1796,1800,1804,1808,1812,1816,1820,1824-1825,1828-1829,1832-1833,183" | |
1181 | "6-1837,1840-1841,1844-1845,1848-1849,1852-1853,1856,1860,1864,1868,1872,1876,1880,1884,1888-1889,1892-1893,1896-" | |
1182 | "1897,1900-1901,1904-1905,1908-1909,1912-1913,1916-1917,1920,1924,1928,1932,1936,1940,1944,1948,1952-1953,1956-19" | |
1183 | "57,1960-1961,1964-1965,1968-1969,1972-1973,1976-1977,1980-1981,1984,1988,1992,1996,2000,2004,2008,2012,2016-2017" | |
1184 | ",2020-2021,2024-2025,2028-2029,2032-2033,2036-2037,2040-2041,2044-2045,2048,2052,2056,2060,2064,2068,2072,2076,2" | |
1185 | "080-2081,2084-2085,2088-2089,2092-2093,2096-2097,2100-2101,2104-2105,2108-2109,2112,2116,2120,2124,2128,2132,213" | |
1186 | "6,2140,2144-2145,2148-2149,2152-2153,2156-2157,2160-2161,2164-2165,2168-2169,2172-2173,2176,2180,2184,2188,2192," | |
1187 | "2196,2200,2204,2208-2209,2212-2213,2216-2217,2220-2221,2224-2225,2228-2229,2232-2233,2236-2237,2240,2244,2248,22" | |
1188 | "52,2256,2260,2264,2268,2272-2273,2276-2277,2280-2281,2284-2285,2288-2289,2292-2293,2296-2297,2300-2301,2304,2308" | |
1189 | ",2312,2316,2320,2324,2328,2332,2336-2337,2340-2341,2344-2345,2348-2349,2352-2353,2356-2357,2360-2361,2364-2365,2" | |
1190 | "368,2372,2376,2380,2384,2388,2392,2396,2400-2401,2404-2405,2408-2409,2412-2413,2416-2417,2420-2421,2424-2425,242" | |
1191 | "8-2429,2432,2436,2440,2444,2448,2452,2456,2460,2464-2465,2468-2469,2472-2473,2476-2477,2480-2481,2484-2485,2488-" | |
1192 | "2489,2492-2493,2496,2500,2504,2508,2512,2516,2520,2524,2528-2529,2532-2533,2536-2537,2540-2541,2544-2545,2548-25" | |
1193 | "49,2552-2553,2556-2557\n"; | |
1194 | ||
1195 | static const struct test_bitmap_print test_print[] __initconst = { | |
1196 | { small_bitmap, sizeof(small_bitmap) * BITS_PER_BYTE, small_mask, small_list }, | |
1197 | { large_bitmap, sizeof(large_bitmap) * BITS_PER_BYTE, large_mask, large_list }, | |
1198 | }; | |
1199 | ||
1200 | static void __init test_bitmap_print_buf(void) | |
1201 | { | |
1202 | int i; | |
1203 | ||
1204 | for (i = 0; i < ARRAY_SIZE(test_print); i++) { | |
1205 | const struct test_bitmap_print *t = &test_print[i]; | |
1206 | int n; | |
1207 | ||
1208 | n = bitmap_print_bitmask_to_buf(print_buf, t->bitmap, t->nbits, | |
1209 | 0, 2 * PAGE_SIZE); | |
1210 | expect_eq_uint(strlen(t->mask) + 1, n); | |
1211 | expect_eq_str(t->mask, print_buf, n); | |
1212 | ||
1213 | n = bitmap_print_list_to_buf(print_buf, t->bitmap, t->nbits, | |
1214 | 0, 2 * PAGE_SIZE); | |
1215 | expect_eq_uint(strlen(t->list) + 1, n); | |
1216 | expect_eq_str(t->list, print_buf, n); | |
1217 | ||
1218 | /* test by non-zero offset */ | |
1219 | if (strlen(t->list) > PAGE_SIZE) { | |
1220 | n = bitmap_print_list_to_buf(print_buf, t->bitmap, t->nbits, | |
1221 | PAGE_SIZE, PAGE_SIZE); | |
1222 | expect_eq_uint(strlen(t->list) + 1 - PAGE_SIZE, n); | |
1223 | expect_eq_str(t->list + PAGE_SIZE, print_buf, n); | |
1224 | } | |
1225 | } | |
1226 | } | |
1227 | ||
2356d198 YN |
1228 | /* |
1229 | * FIXME: Clang breaks compile-time evaluations when KASAN and GCOV are enabled. | |
1230 | * To workaround it, GCOV is force-disabled in Makefile for this configuration. | |
1231 | */ | |
dc34d503 AL |
1232 | static void __init test_bitmap_const_eval(void) |
1233 | { | |
1234 | DECLARE_BITMAP(bitmap, BITS_PER_LONG); | |
1235 | unsigned long initvar = BIT(2); | |
1236 | unsigned long bitopvar = 0; | |
1237 | unsigned long var = 0; | |
1238 | int res; | |
1239 | ||
1240 | /* | |
1241 | * Compilers must be able to optimize all of those to compile-time | |
1242 | * constants on any supported optimization level (-O2, -Os) and any | |
1243 | * architecture. Otherwise, trigger a build bug. | |
1244 | * The whole function gets optimized out then, there's nothing to do | |
1245 | * in runtime. | |
1246 | */ | |
1247 | ||
1248 | /* | |
1249 | * Equals to `unsigned long bitmap[1] = { GENMASK(6, 5), }`. | |
1250 | * Clang on s390 optimizes bitops at compile-time as intended, but at | |
1251 | * the same time stops treating @bitmap and @bitopvar as compile-time | |
1252 | * constants after regular test_bit() is executed, thus triggering the | |
1253 | * build bugs below. So, call const_test_bit() there directly until | |
1254 | * the compiler is fixed. | |
1255 | */ | |
1256 | bitmap_clear(bitmap, 0, BITS_PER_LONG); | |
dc34d503 | 1257 | if (!test_bit(7, bitmap)) |
dc34d503 AL |
1258 | bitmap_set(bitmap, 5, 2); |
1259 | ||
1260 | /* Equals to `unsigned long bitopvar = BIT(20)` */ | |
1261 | __change_bit(31, &bitopvar); | |
1262 | bitmap_shift_right(&bitopvar, &bitopvar, 11, BITS_PER_LONG); | |
1263 | ||
1264 | /* Equals to `unsigned long var = BIT(25)` */ | |
1265 | var |= BIT(25); | |
1266 | if (var & BIT(0)) | |
1267 | var ^= GENMASK(9, 6); | |
1268 | ||
1269 | /* __const_hweight<32|64>(GENMASK(6, 5)) == 2 */ | |
1270 | res = bitmap_weight(bitmap, 20); | |
1271 | BUILD_BUG_ON(!__builtin_constant_p(res)); | |
1272 | BUILD_BUG_ON(res != 2); | |
1273 | ||
1274 | /* !(BIT(31) & BIT(18)) == 1 */ | |
1275 | res = !test_bit(18, &bitopvar); | |
1276 | BUILD_BUG_ON(!__builtin_constant_p(res)); | |
1277 | BUILD_BUG_ON(!res); | |
1278 | ||
1279 | /* BIT(2) & GENMASK(14, 8) == 0 */ | |
1280 | res = initvar & GENMASK(14, 8); | |
1281 | BUILD_BUG_ON(!__builtin_constant_p(res)); | |
1282 | BUILD_BUG_ON(res); | |
1283 | ||
1284 | /* ~BIT(25) */ | |
1285 | BUILD_BUG_ON(!__builtin_constant_p(~var)); | |
1286 | BUILD_BUG_ON(~var != ~BIT(25)); | |
1287 | } | |
1288 | ||
6b1a4d5b | 1289 | static void __init selftest(void) |
5fd003f5 | 1290 | { |
ee3527bd | 1291 | test_zero_clear(); |
978f369c | 1292 | test_fill_set(); |
fe81814c | 1293 | test_copy(); |
6d5d3a0c | 1294 | test_bitmap_region(); |
30544ed5 | 1295 | test_replace(); |
de5f8433 | 1296 | test_bitmap_sg(); |
3aa56885 | 1297 | test_bitmap_arr32(); |
2c523550 | 1298 | test_bitmap_arr64(); |
7eb2e94e | 1299 | test_bitmap_parse(); |
6df0d464 | 1300 | test_bitmap_parselist(); |
db731300 | 1301 | test_bitmap_printlist(); |
3cc78125 | 1302 | test_mem_optimisations(); |
bcb32a1d | 1303 | test_bitmap_cut(); |
291f93ca | 1304 | test_bitmap_print_buf(); |
dc34d503 | 1305 | test_bitmap_const_eval(); |
e3783c80 YN |
1306 | |
1307 | test_find_nth_bit(); | |
8173aa26 YN |
1308 | test_for_each_set_bit(); |
1309 | test_for_each_set_bit_from(); | |
1310 | test_for_each_clear_bit(); | |
1311 | test_for_each_clear_bit_from(); | |
1312 | test_for_each_set_bitrange(); | |
1313 | test_for_each_clear_bitrange(); | |
1314 | test_for_each_set_bitrange_from(); | |
1315 | test_for_each_clear_bitrange_from(); | |
1316 | test_for_each_set_clump8(); | |
1317 | test_for_each_set_bit_wrap(); | |
5fd003f5 DD |
1318 | } |
1319 | ||
6b1a4d5b | 1320 | KSTM_MODULE_LOADERS(test_bitmap); |
5fd003f5 DD |
1321 | MODULE_AUTHOR("david decotigny <david.decotigny@googlers.com>"); |
1322 | MODULE_LICENSE("GPL"); |