2 * Test cases for printf facility.
5 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7 #include <linux/bitmap.h>
8 #include <linux/init.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/printk.h>
12 #include <linux/slab.h>
13 #include <linux/string.h>
14 #include <linux/uaccess.h>
16 #include "../tools/testing/selftests/kselftest_module.h"
18 static unsigned total_tests __initdata;
19 static unsigned failed_tests __initdata;
21 static char pbl_buffer[PAGE_SIZE] __initdata;
25 __check_eq_uint(const char *srcfile, unsigned int line,
26 const unsigned int exp_uint, unsigned int x)
29 pr_err("[%s:%u] expected %u, got %u\n",
30 srcfile, line, exp_uint, x);
38 __check_eq_bitmap(const char *srcfile, unsigned int line,
39 const unsigned long *exp_bmap, const unsigned long *bmap,
42 if (!bitmap_equal(exp_bmap, bmap, nbits)) {
43 pr_warn("[%s:%u] bitmaps contents differ: expected \"%*pbl\", got \"%*pbl\"\n",
45 nbits, exp_bmap, nbits, bmap);
52 __check_eq_pbl(const char *srcfile, unsigned int line,
53 const char *expected_pbl,
54 const unsigned long *bitmap, unsigned int nbits)
56 snprintf(pbl_buffer, sizeof(pbl_buffer), "%*pbl", nbits, bitmap);
57 if (strcmp(expected_pbl, pbl_buffer)) {
58 pr_warn("[%s:%u] expected \"%s\", got \"%s\"\n",
60 expected_pbl, pbl_buffer);
67 __check_eq_u32_array(const char *srcfile, unsigned int line,
68 const u32 *exp_arr, unsigned int exp_len,
69 const u32 *arr, unsigned int len) __used;
71 __check_eq_u32_array(const char *srcfile, unsigned int line,
72 const u32 *exp_arr, unsigned int exp_len,
73 const u32 *arr, unsigned int len)
76 pr_warn("[%s:%u] array length differ: expected %u, got %u\n",
82 if (memcmp(exp_arr, arr, len*sizeof(*arr))) {
83 pr_warn("[%s:%u] array contents differ\n", srcfile, line);
84 print_hex_dump(KERN_WARNING, " exp: ", DUMP_PREFIX_OFFSET,
85 32, 4, exp_arr, exp_len*sizeof(*exp_arr), false);
86 print_hex_dump(KERN_WARNING, " got: ", DUMP_PREFIX_OFFSET,
87 32, 4, arr, len*sizeof(*arr), false);
94 #define __expect_eq(suffix, ...) \
98 if (!__check_eq_ ## suffix(__FILE__, __LINE__, \
106 #define expect_eq_uint(...) __expect_eq(uint, ##__VA_ARGS__)
107 #define expect_eq_bitmap(...) __expect_eq(bitmap, ##__VA_ARGS__)
108 #define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__)
109 #define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__)
111 static void __init test_zero_clear(void)
113 DECLARE_BITMAP(bmap, 1024);
115 /* Known way to set all bits */
116 memset(bmap, 0xff, 128);
118 expect_eq_pbl("0-22", bmap, 23);
119 expect_eq_pbl("0-1023", bmap, 1024);
121 /* single-word bitmaps */
122 bitmap_clear(bmap, 0, 9);
123 expect_eq_pbl("9-1023", bmap, 1024);
125 bitmap_zero(bmap, 35);
126 expect_eq_pbl("64-1023", bmap, 1024);
128 /* cross boundaries operations */
129 bitmap_clear(bmap, 79, 19);
130 expect_eq_pbl("64-78,98-1023", bmap, 1024);
132 bitmap_zero(bmap, 115);
133 expect_eq_pbl("128-1023", bmap, 1024);
135 /* Zeroing entire area */
136 bitmap_zero(bmap, 1024);
137 expect_eq_pbl("", bmap, 1024);
140 static void __init test_fill_set(void)
142 DECLARE_BITMAP(bmap, 1024);
144 /* Known way to clear all bits */
145 memset(bmap, 0x00, 128);
147 expect_eq_pbl("", bmap, 23);
148 expect_eq_pbl("", bmap, 1024);
150 /* single-word bitmaps */
151 bitmap_set(bmap, 0, 9);
152 expect_eq_pbl("0-8", bmap, 1024);
154 bitmap_fill(bmap, 35);
155 expect_eq_pbl("0-63", bmap, 1024);
157 /* cross boundaries operations */
158 bitmap_set(bmap, 79, 19);
159 expect_eq_pbl("0-63,79-97", bmap, 1024);
161 bitmap_fill(bmap, 115);
162 expect_eq_pbl("0-127", bmap, 1024);
164 /* Zeroing entire area */
165 bitmap_fill(bmap, 1024);
166 expect_eq_pbl("0-1023", bmap, 1024);
169 static void __init test_copy(void)
171 DECLARE_BITMAP(bmap1, 1024);
172 DECLARE_BITMAP(bmap2, 1024);
174 bitmap_zero(bmap1, 1024);
175 bitmap_zero(bmap2, 1024);
177 /* single-word bitmaps */
178 bitmap_set(bmap1, 0, 19);
179 bitmap_copy(bmap2, bmap1, 23);
180 expect_eq_pbl("0-18", bmap2, 1024);
182 bitmap_set(bmap2, 0, 23);
183 bitmap_copy(bmap2, bmap1, 23);
184 expect_eq_pbl("0-18", bmap2, 1024);
186 /* multi-word bitmaps */
187 bitmap_set(bmap1, 0, 109);
188 bitmap_copy(bmap2, bmap1, 1024);
189 expect_eq_pbl("0-108", bmap2, 1024);
191 bitmap_fill(bmap2, 1024);
192 bitmap_copy(bmap2, bmap1, 1024);
193 expect_eq_pbl("0-108", bmap2, 1024);
195 /* the following tests assume a 32- or 64-bit arch (even 128b
199 bitmap_fill(bmap2, 1024);
200 bitmap_copy(bmap2, bmap1, 109); /* ... but 0-padded til word length */
201 expect_eq_pbl("0-108,128-1023", bmap2, 1024);
203 bitmap_fill(bmap2, 1024);
204 bitmap_copy(bmap2, bmap1, 97); /* ... but aligned on word length */
205 expect_eq_pbl("0-108,128-1023", bmap2, 1024);
208 #define PARSE_TIME 0x1
210 struct test_bitmap_parselist{
213 const unsigned long *expected;
218 static const unsigned long exp[] __initconst = {
221 BITMAP_FROM_U64(0x0000ffff),
222 BITMAP_FROM_U64(0xffff0000),
223 BITMAP_FROM_U64(0x55555555),
224 BITMAP_FROM_U64(0xaaaaaaaa),
225 BITMAP_FROM_U64(0x11111111),
226 BITMAP_FROM_U64(0x22222222),
227 BITMAP_FROM_U64(0xffffffff),
228 BITMAP_FROM_U64(0xfffffffe),
229 BITMAP_FROM_U64(0x3333333311111111ULL),
230 BITMAP_FROM_U64(0xffffffff77777777ULL),
234 static const unsigned long exp2[] __initconst = {
235 BITMAP_FROM_U64(0x3333333311111111ULL),
236 BITMAP_FROM_U64(0xffffffff77777777ULL)
239 static const struct test_bitmap_parselist parselist_tests[] __initconst = {
240 #define step (sizeof(u64) / sizeof(unsigned long))
242 {0, "0", &exp[0], 8, 0},
243 {0, "1", &exp[1 * step], 8, 0},
244 {0, "0-15", &exp[2 * step], 32, 0},
245 {0, "16-31", &exp[3 * step], 32, 0},
246 {0, "0-31:1/2", &exp[4 * step], 32, 0},
247 {0, "1-31:1/2", &exp[5 * step], 32, 0},
248 {0, "0-31:1/4", &exp[6 * step], 32, 0},
249 {0, "1-31:1/4", &exp[7 * step], 32, 0},
250 {0, "0-31:4/4", &exp[8 * step], 32, 0},
251 {0, "1-31:4/4", &exp[9 * step], 32, 0},
252 {0, "0-31:1/4,32-63:2/4", &exp[10 * step], 64, 0},
253 {0, "0-31:3/4,32-63:4/4", &exp[11 * step], 64, 0},
254 {0, " ,, 0-31:3/4 ,, 32-63:4/4 ,, ", &exp[11 * step], 64, 0},
256 {0, "0-31:1/4,32-63:2/4,64-95:3/4,96-127:4/4", exp2, 128, 0},
258 {0, "0-2047:128/256", NULL, 2048, PARSE_TIME},
260 {0, "", &exp[12 * step], 8, 0},
261 {0, "\n", &exp[12 * step], 8, 0},
262 {0, ",, ,, , , ,", &exp[12 * step], 8, 0},
263 {0, " , ,, , , ", &exp[12 * step], 8, 0},
264 {0, " , ,, , , \n", &exp[12 * step], 8, 0},
266 {-EINVAL, "-1", NULL, 8, 0},
267 {-EINVAL, "-0", NULL, 8, 0},
268 {-EINVAL, "10-1", NULL, 8, 0},
269 {-EINVAL, "0-31:", NULL, 8, 0},
270 {-EINVAL, "0-31:0", NULL, 8, 0},
271 {-EINVAL, "0-31:0/", NULL, 8, 0},
272 {-EINVAL, "0-31:0/0", NULL, 8, 0},
273 {-EINVAL, "0-31:1/0", NULL, 8, 0},
274 {-EINVAL, "0-31:10/1", NULL, 8, 0},
275 {-EOVERFLOW, "0-98765432123456789:10/1", NULL, 8, 0},
277 {-EINVAL, "a-31", NULL, 8, 0},
278 {-EINVAL, "0-a1", NULL, 8, 0},
279 {-EINVAL, "a-31:10/1", NULL, 8, 0},
280 {-EINVAL, "0-31:a/1", NULL, 8, 0},
281 {-EINVAL, "0-\n", NULL, 8, 0},
284 static void __init __test_bitmap_parselist(int is_user)
289 DECLARE_BITMAP(bmap, 2048);
290 char *mode = is_user ? "_user" : "";
292 for (i = 0; i < ARRAY_SIZE(parselist_tests); i++) {
293 #define ptest parselist_tests[i]
296 mm_segment_t orig_fs = get_fs();
297 size_t len = strlen(ptest.in);
301 err = bitmap_parselist_user(ptest.in, len,
303 time = ktime_get() - time;
307 err = bitmap_parselist(ptest.in, bmap, ptest.nbits);
308 time = ktime_get() - time;
311 if (err != ptest.errno) {
312 pr_err("parselist%s: %d: input is %s, errno is %d, expected %d\n",
313 mode, i, ptest.in, err, ptest.errno);
317 if (!err && ptest.expected
318 && !__bitmap_equal(bmap, ptest.expected, ptest.nbits)) {
319 pr_err("parselist%s: %d: input is %s, result is 0x%lx, expected 0x%lx\n",
320 mode, i, ptest.in, bmap[0],
325 if (ptest.flags & PARSE_TIME)
326 pr_err("parselist%s: %d: input is '%s' OK, Time: %llu\n",
327 mode, i, ptest.in, time);
331 static void __init test_bitmap_parselist(void)
333 __test_bitmap_parselist(0);
336 static void __init test_bitmap_parselist_user(void)
338 __test_bitmap_parselist(1);
341 #define EXP_BYTES (sizeof(exp) * 8)
343 static void __init test_bitmap_arr32(void)
345 unsigned int nbits, next_bit;
346 u32 arr[sizeof(exp) / 4];
347 DECLARE_BITMAP(bmap2, EXP_BYTES);
349 memset(arr, 0xa5, sizeof(arr));
351 for (nbits = 0; nbits < EXP_BYTES; ++nbits) {
352 bitmap_to_arr32(arr, exp, nbits);
353 bitmap_from_arr32(bmap2, arr, nbits);
354 expect_eq_bitmap(bmap2, exp, nbits);
356 next_bit = find_next_bit(bmap2,
357 round_up(nbits, BITS_PER_LONG), nbits);
358 if (next_bit < round_up(nbits, BITS_PER_LONG))
359 pr_err("bitmap_copy_arr32(nbits == %d:"
360 " tail is not safely cleared: %d\n",
363 if (nbits < EXP_BYTES - 32)
364 expect_eq_uint(arr[DIV_ROUND_UP(nbits, 32)],
369 static void noinline __init test_mem_optimisations(void)
371 DECLARE_BITMAP(bmap1, 1024);
372 DECLARE_BITMAP(bmap2, 1024);
373 unsigned int start, nbits;
375 for (start = 0; start < 1024; start += 8) {
376 for (nbits = 0; nbits < 1024 - start; nbits += 8) {
377 memset(bmap1, 0x5a, sizeof(bmap1));
378 memset(bmap2, 0x5a, sizeof(bmap2));
380 bitmap_set(bmap1, start, nbits);
381 __bitmap_set(bmap2, start, nbits);
382 if (!bitmap_equal(bmap1, bmap2, 1024)) {
383 printk("set not equal %d %d\n", start, nbits);
386 if (!__bitmap_equal(bmap1, bmap2, 1024)) {
387 printk("set not __equal %d %d\n", start, nbits);
391 bitmap_clear(bmap1, start, nbits);
392 __bitmap_clear(bmap2, start, nbits);
393 if (!bitmap_equal(bmap1, bmap2, 1024)) {
394 printk("clear not equal %d %d\n", start, nbits);
397 if (!__bitmap_equal(bmap1, bmap2, 1024)) {
398 printk("clear not __equal %d %d\n", start,
406 static void __init selftest(void)
412 test_bitmap_parselist();
413 test_bitmap_parselist_user();
414 test_mem_optimisations();
417 KSTM_MODULE_LOADERS(test_bitmap);
418 MODULE_AUTHOR("david decotigny <david.decotigny@googlers.com>");
419 MODULE_LICENSE("GPL");