1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
11 #include <sys/queue.h>
13 #include <rte_common.h>
14 #include <rte_memory.h>
15 #include <rte_eal_memconfig.h>
16 #include <rte_per_lcore.h>
17 #include <rte_launch.h>
19 #include <rte_lcore.h>
20 #include <rte_malloc.h>
21 #include <rte_cycles.h>
22 #include <rte_random.h>
23 #include <rte_string_fns.h>
33 * Allocate some dynamic memory from heap (3 areas). Check that areas
34 * don't overlap and that alignment constraints match. This test is
35 * done many times on different lcores simultaneously.
38 /* Test if memory overlaps: return 1 if true, or 0 if false. */
40 is_memory_overlap(void *p1, size_t len1, void *p2, size_t len2)
42 unsigned long ptr1 = (unsigned long)p1;
43 unsigned long ptr2 = (unsigned long)p2;
45 if (ptr2 >= ptr1 && (ptr2 - ptr1) < len1)
47 else if (ptr2 < ptr1 && (ptr1 - ptr2) < len2)
53 is_aligned(void *p, int align)
55 unsigned long addr = (unsigned long)p;
56 unsigned mask = align - 1;
64 test_align_overlap_per_lcore(__attribute__((unused)) void *arg)
66 const unsigned align1 = 8,
70 void *p1 = NULL, *p2 = NULL, *p3 = NULL;
73 for (i = 0; i < N; i++) {
74 p1 = rte_zmalloc("dummy", 1000, align1);
76 printf("rte_zmalloc returned NULL (i=%u)\n", i);
80 for(j = 0; j < 1000 ; j++) {
81 if( *(char *)p1 != 0) {
82 printf("rte_zmalloc didn't zero the allocated memory\n");
86 p2 = rte_malloc("dummy", 1000, align2);
88 printf("rte_malloc returned NULL (i=%u)\n", i);
93 p3 = rte_malloc("dummy", 1000, align3);
95 printf("rte_malloc returned NULL (i=%u)\n", i);
101 if (is_memory_overlap(p1, 1000, p2, 1000)) {
102 printf("p1 and p2 overlaps\n");
105 if (is_memory_overlap(p2, 1000, p3, 1000)) {
106 printf("p2 and p3 overlaps\n");
109 if (is_memory_overlap(p1, 1000, p3, 1000)) {
110 printf("p1 and p3 overlaps\n");
113 if (!is_aligned(p1, align1)) {
114 printf("p1 is not aligned\n");
117 if (!is_aligned(p2, align2)) {
118 printf("p2 is not aligned\n");
121 if (!is_aligned(p3, align3)) {
122 printf("p3 is not aligned\n");
129 rte_malloc_dump_stats(stdout, "dummy");
135 test_reordered_free_per_lcore(__attribute__((unused)) void *arg)
137 const unsigned align1 = 8,
144 for (i = 0; i < 30; i++) {
145 p1 = rte_zmalloc("dummy", 1000, align1);
147 printf("rte_zmalloc returned NULL (i=%u)\n", i);
151 for(j = 0; j < 1000 ; j++) {
152 if( *(char *)p1 != 0) {
153 printf("rte_zmalloc didn't zero the allocated memory\n");
157 /* use calloc to allocate 1000 16-byte items this time */
158 p2 = rte_calloc("dummy", 1000, 16, align2);
159 /* for third request use regular malloc again */
160 p3 = rte_malloc("dummy", 1000, align3);
162 printf("rte_malloc returned NULL (i=%u)\n", i);
166 if (is_memory_overlap(p1, 1000, p2, 1000)) {
167 printf("p1 and p2 overlaps\n");
170 if (is_memory_overlap(p2, 1000, p3, 1000)) {
171 printf("p2 and p3 overlaps\n");
174 if (is_memory_overlap(p1, 1000, p3, 1000)) {
175 printf("p1 and p3 overlaps\n");
178 if (!is_aligned(p1, align1)) {
179 printf("p1 is not aligned\n");
182 if (!is_aligned(p2, align2)) {
183 printf("p2 is not aligned\n");
186 if (!is_aligned(p3, align3)) {
187 printf("p3 is not aligned\n");
190 /* try freeing in every possible order */
224 rte_malloc_dump_stats(stdout, "dummy");
229 /* test function inside the malloc lib*/
231 test_str_to_size(void)
237 {{ "5G", (uint64_t)5 * 1024 * 1024 *1024 },
238 {"0x20g", (uint64_t)0x20 * 1024 * 1024 *1024},
239 {"10M", 10 * 1024 * 1024},
240 {"050m", 050 * 1024 * 1024},
246 {"-1", 0}, /* negative values return 0 */
249 {"18446744073709551616", 0} /* ULLONG_MAX + 1 == out of range*/
252 for (i = 0; i < sizeof(test_values)/sizeof(test_values[0]); i++)
253 if (rte_str_to_size(test_values[i].str) != test_values[i].value)
259 test_multi_alloc_statistics(void)
262 struct rte_malloc_socket_stats pre_stats, post_stats ,first_stats, second_stats;
267 /* Dynamically calculate the overhead by allocating one cacheline and
268 * then comparing what was allocated from the heap.
270 rte_malloc_get_socket_stats(socket, &pre_stats);
272 void *dummy = rte_malloc_socket(NULL, RTE_CACHE_LINE_SIZE, 0, socket);
276 rte_malloc_get_socket_stats(socket, &post_stats);
278 /* after subtracting cache line, remainder is overhead */
279 overhead = post_stats.heap_allocsz_bytes - pre_stats.heap_allocsz_bytes;
280 overhead -= RTE_CACHE_LINE_SIZE;
284 /* Now start the real tests */
285 rte_malloc_get_socket_stats(socket, &pre_stats);
287 void *p1 = rte_malloc_socket("stats", size , align, socket);
291 rte_malloc_dump_stats(stdout, "stats");
293 rte_malloc_get_socket_stats(socket,&post_stats);
294 /* Check statistics reported are correct */
295 /* All post stats should be equal to pre stats after alloc freed */
296 if ((post_stats.heap_totalsz_bytes != pre_stats.heap_totalsz_bytes) &&
297 (post_stats.heap_freesz_bytes!=pre_stats.heap_freesz_bytes) &&
298 (post_stats.heap_allocsz_bytes!=pre_stats.heap_allocsz_bytes)&&
299 (post_stats.alloc_count!=pre_stats.alloc_count)&&
300 (post_stats.free_count!=pre_stats.free_count)) {
301 printf("Malloc statistics are incorrect - freed alloc\n");
304 /* Check two consecutive allocations */
307 rte_malloc_get_socket_stats(socket,&pre_stats);
308 void *p2 = rte_malloc_socket("add", size ,align, socket);
311 rte_malloc_get_socket_stats(socket,&first_stats);
313 void *p3 = rte_malloc_socket("add2", size,align, socket);
317 rte_malloc_get_socket_stats(socket,&second_stats);
322 /* After freeing both allocations check stats return to original */
323 rte_malloc_get_socket_stats(socket, &post_stats);
325 if(second_stats.heap_totalsz_bytes != first_stats.heap_totalsz_bytes) {
326 printf("Incorrect heap statistics: Total size \n");
329 /* Check allocated size is equal to two additions plus overhead */
330 if(second_stats.heap_allocsz_bytes !=
331 size + overhead + first_stats.heap_allocsz_bytes) {
332 printf("Incorrect heap statistics: Allocated size \n");
335 /* Check that allocation count increments correctly i.e. +1 */
336 if (second_stats.alloc_count != first_stats.alloc_count + 1) {
337 printf("Incorrect heap statistics: Allocated count \n");
341 if (second_stats.free_count != first_stats.free_count){
342 printf("Incorrect heap statistics: Free count \n");
346 /* Make sure that we didn't touch our greatest chunk: 2 * 11M) */
347 if (post_stats.greatest_free_size != pre_stats.greatest_free_size) {
348 printf("Incorrect heap statistics: Greatest free size \n");
351 /* Free size must equal the original free size minus the new allocation*/
352 if (first_stats.heap_freesz_bytes <= second_stats.heap_freesz_bytes) {
353 printf("Incorrect heap statistics: Free size \n");
357 if ((post_stats.heap_totalsz_bytes != pre_stats.heap_totalsz_bytes) &&
358 (post_stats.heap_freesz_bytes!=pre_stats.heap_freesz_bytes) &&
359 (post_stats.heap_allocsz_bytes!=pre_stats.heap_allocsz_bytes)&&
360 (post_stats.alloc_count!=pre_stats.alloc_count)&&
361 (post_stats.free_count!=pre_stats.free_count)) {
362 printf("Malloc statistics are incorrect - freed alloc\n");
369 test_rte_malloc_type_limits(void)
371 /* The type-limits functionality is not yet implemented,
372 * so always return 0 no matter what the retval.
374 const char *typename = "limit_test";
375 rte_malloc_set_limit(typename, 64 * 1024);
376 rte_malloc_dump_stats(stdout, typename);
383 const char hello_str[] = "Hello, world!";
384 const unsigned size1 = 1024;
385 const unsigned size2 = size1 + 1024;
386 const unsigned size3 = size2;
387 const unsigned size4 = size3 + 1024;
389 /* test data is the same even if element is moved*/
390 char *ptr1 = rte_zmalloc(NULL, size1, RTE_CACHE_LINE_SIZE);
392 printf("NULL pointer returned from rte_zmalloc\n");
395 strlcpy(ptr1, hello_str, size1);
396 char *ptr2 = rte_realloc(ptr1, size2, RTE_CACHE_LINE_SIZE);
399 printf("NULL pointer returned from rte_realloc\n");
403 printf("unexpected - ptr1 == ptr2\n");
405 if (strcmp(ptr2, hello_str) != 0){
406 printf("Error - lost data from pointed area\n");
411 for (i = strnlen(hello_str, sizeof(hello_str)); i < size1; i++)
413 printf("Bad data in realloc\n");
417 /* now allocate third element, free the second
418 * and resize third. It should not move. (ptr1 is now invalid)
420 char *ptr3 = rte_zmalloc(NULL, size3, RTE_CACHE_LINE_SIZE);
422 printf("NULL pointer returned from rte_zmalloc\n");
426 for (i = 0; i < size3; i++)
428 printf("Bad data in zmalloc\n");
434 /* first resize to half the size of the freed block */
435 char *ptr4 = rte_realloc(ptr3, size4, RTE_CACHE_LINE_SIZE);
437 printf("NULL pointer returned from rte_realloc\n");
442 printf("Unexpected - ptr4 != ptr3\n");
446 /* now resize again to the full size of the freed block */
447 ptr4 = rte_realloc(ptr3, size3 + size2 + size1, RTE_CACHE_LINE_SIZE);
449 printf("Unexpected - ptr4 != ptr3 on second resize\n");
455 /* now try a resize to a smaller size, see if it works */
456 const unsigned size5 = 1024;
457 const unsigned size6 = size5 / 2;
458 char *ptr5 = rte_malloc(NULL, size5, RTE_CACHE_LINE_SIZE);
460 printf("NULL pointer returned from rte_malloc\n");
463 char *ptr6 = rte_realloc(ptr5, size6, RTE_CACHE_LINE_SIZE);
465 printf("NULL pointer returned from rte_realloc\n");
470 printf("Error, resizing to a smaller size moved data\n");
476 /* check for behaviour changing alignment */
477 const unsigned size7 = 1024;
478 const unsigned orig_align = RTE_CACHE_LINE_SIZE;
479 unsigned new_align = RTE_CACHE_LINE_SIZE * 2;
480 char *ptr7 = rte_malloc(NULL, size7, orig_align);
482 printf("NULL pointer returned from rte_malloc\n");
485 /* calc an alignment we don't already have */
486 while(RTE_PTR_ALIGN(ptr7, new_align) == ptr7)
488 char *ptr8 = rte_realloc(ptr7, size7, new_align);
490 printf("NULL pointer returned from rte_realloc\n");
494 if (RTE_PTR_ALIGN(ptr8, new_align) != ptr8){
495 printf("Failure to re-align data\n");
501 /* test behaviour when there is a free block after current one,
502 * but its not big enough
504 unsigned size9 = 1024, size10 = 1024;
505 unsigned size11 = size9 + size10 + 256;
506 char *ptr9 = rte_malloc(NULL, size9, RTE_CACHE_LINE_SIZE);
508 printf("NULL pointer returned from rte_malloc\n");
511 char *ptr10 = rte_malloc(NULL, size10, RTE_CACHE_LINE_SIZE);
513 printf("NULL pointer returned from rte_malloc\n");
517 char *ptr11 = rte_realloc(ptr10, size11, RTE_CACHE_LINE_SIZE);
519 printf("NULL pointer returned from rte_realloc\n");
524 printf("Error, unexpected that realloc has not created new buffer\n");
530 /* check we don't crash if we pass null to realloc
531 * We should get a malloc of the size requested*/
532 const size_t size12 = 1024;
534 char *ptr12 = rte_realloc(NULL, size12, RTE_CACHE_LINE_SIZE);
536 printf("NULL pointer returned from rte_realloc\n");
539 if (rte_malloc_validate(ptr12, &size12_check) < 0 ||
540 size12_check != size12){
549 test_random_alloc_free(void *_ __attribute__((unused)))
552 struct mem_list *next;
558 rte_srand((unsigned)rte_rdtsc());
560 for (i = 0; i < N; i++){
561 unsigned free_mem = 0;
562 size_t allocated_size;
564 const unsigned mem_size = sizeof(struct mem_list) + \
565 rte_rand() % (64 * 1024);
566 const unsigned align = 1 << (rte_rand() % 12); /* up to 4k alignment */
567 struct mem_list *entry = rte_malloc(NULL,
571 if (RTE_PTR_ALIGN(entry, align)!= entry)
573 if (rte_malloc_validate(entry, &allocated_size) == -1
574 || allocated_size < mem_size)
576 memset(entry->data, rte_lcore_id(),
577 mem_size - sizeof(*entry));
578 entry->next = list_head;
579 if (rte_malloc_validate(entry, NULL) == -1)
584 /* switch to freeing the memory with a 20% probability */
585 free_mem = ((rte_rand() % 10) >= 8);
588 struct mem_list *entry = list_head;
589 list_head = list_head->next;
593 printf("Lcore %u allocated/freed %u blocks\n", rte_lcore_id(), count);
597 #define err_return() do { \
598 printf("%s: %d - Error\n", __func__, __LINE__); \
603 test_rte_malloc_validate(void)
605 const size_t request_size = 1024;
606 size_t allocated_size;
607 char *data_ptr = rte_malloc(NULL, request_size, RTE_CACHE_LINE_SIZE);
608 #ifdef RTE_MALLOC_DEBUG
610 char *over_write_vals = NULL;
613 if (data_ptr == NULL) {
614 printf("%s: %d - Allocation error\n", __func__, __LINE__);
618 /* check that a null input returns -1 */
619 if (rte_malloc_validate(NULL, NULL) != -1)
622 /* check that we get ok on a valid pointer */
623 if (rte_malloc_validate(data_ptr, &allocated_size) < 0)
626 /* check that the returned size is ok */
627 if (allocated_size < request_size)
630 #ifdef RTE_MALLOC_DEBUG
632 /****** change the header to be bad */
634 over_write_vals = (char *)((uintptr_t)data_ptr - sizeof(save_buf));
635 /* first save the data as a backup before overwriting it */
636 memcpy(save_buf, over_write_vals, sizeof(save_buf));
637 memset(over_write_vals, 1, sizeof(save_buf));
638 /* then run validate */
639 retval = rte_malloc_validate(data_ptr, NULL);
640 /* finally restore the data again */
641 memcpy(over_write_vals, save_buf, sizeof(save_buf));
642 /* check we previously had an error */
646 /* check all ok again */
647 if (rte_malloc_validate(data_ptr, &allocated_size) < 0)
650 /**** change the trailer to be bad */
651 over_write_vals = (char *)((uintptr_t)data_ptr + allocated_size);
652 /* first save the data as a backup before overwriting it */
653 memcpy(save_buf, over_write_vals, sizeof(save_buf));
654 memset(over_write_vals, 1, sizeof(save_buf));
655 /* then run validate */
656 retval = rte_malloc_validate(data_ptr, NULL);
657 /* finally restore the data again */
658 memcpy(over_write_vals, save_buf, sizeof(save_buf));
662 /* check all ok again */
663 if (rte_malloc_validate(data_ptr, &allocated_size) < 0)
677 test_zero_aligned_alloc(void)
679 char *p1 = rte_malloc(NULL,1024, 0);
682 if (!rte_is_aligned(p1, RTE_CACHE_LINE_SIZE))
689 if (p1) rte_free(p1);
694 test_malloc_bad_params(void)
696 const char *type = NULL;
698 unsigned align = RTE_CACHE_LINE_SIZE;
700 /* rte_malloc expected to return null with inappropriate size */
701 char *bad_ptr = rte_malloc(type, size, align);
705 /* rte_malloc expected to return null with inappropriate alignment */
709 bad_ptr = rte_malloc(type, size, align);
716 /* clean up pointer */
723 check_socket_mem(const struct rte_memseg_list *msl, void *arg)
725 int32_t *socket = arg;
730 return *socket == msl->socket_id;
733 /* Check if memory is available on a specific socket */
735 is_mem_on_socket(int32_t socket)
737 return rte_memseg_list_walk(check_socket_mem, &socket);
742 * Find what socket a memory address is on. Only works for addresses within
743 * memsegs, not heap or stack...
746 addr_to_socket(void * addr)
748 const struct rte_memseg *ms = rte_mem_virt2memseg(addr, NULL);
749 return ms == NULL ? -1 : ms->socket_id;
753 /* Test using rte_[c|m|zm]alloc_socket() on a specific socket */
755 test_alloc_single_socket(int32_t socket)
757 const char *type = NULL;
758 const size_t size = 10;
759 const unsigned align = 0;
761 int32_t desired_socket = (socket == SOCKET_ID_ANY) ?
762 (int32_t)rte_socket_id() : socket;
764 /* Test rte_calloc_socket() */
765 mem = rte_calloc_socket(type, size, sizeof(char), align, socket);
768 if (addr_to_socket(mem) != desired_socket) {
774 /* Test rte_malloc_socket() */
775 mem = rte_malloc_socket(type, size, align, socket);
778 if (addr_to_socket(mem) != desired_socket) {
783 /* Test rte_zmalloc_socket() */
784 mem = rte_zmalloc_socket(type, size, align, socket);
787 if (addr_to_socket(mem) != desired_socket) {
797 test_alloc_socket(void)
799 unsigned socket_count = 0;
802 if (test_alloc_single_socket(SOCKET_ID_ANY) < 0)
805 for (i = 0; i < RTE_MAX_NUMA_NODES; i++) {
806 if (is_mem_on_socket(i)) {
808 if (test_alloc_single_socket(i) < 0) {
809 printf("Fail: rte_malloc_socket(..., %u) did not succeed\n",
815 if (test_alloc_single_socket(i) == 0) {
816 printf("Fail: rte_malloc_socket(..., %u) succeeded\n",
823 /* Print warnign if only a single socket, but don't fail the test */
824 if (socket_count < 2) {
825 printf("WARNING: alloc_socket test needs memory on multiple sockets!\n");
837 if (test_str_to_size() < 0){
838 printf("test_str_to_size() failed\n");
841 else printf("test_str_to_size() passed\n");
843 if (test_zero_aligned_alloc() < 0){
844 printf("test_zero_aligned_alloc() failed\n");
847 else printf("test_zero_aligned_alloc() passed\n");
849 if (test_malloc_bad_params() < 0){
850 printf("test_malloc_bad_params() failed\n");
853 else printf("test_malloc_bad_params() passed\n");
855 if (test_realloc() < 0){
856 printf("test_realloc() failed\n");
859 else printf("test_realloc() passed\n");
861 /*----------------------------*/
862 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
863 rte_eal_remote_launch(test_align_overlap_per_lcore, NULL, lcore_id);
866 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
867 if (rte_eal_wait_lcore(lcore_id) < 0)
871 printf("test_align_overlap_per_lcore() failed\n");
874 else printf("test_align_overlap_per_lcore() passed\n");
876 /*----------------------------*/
877 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
878 rte_eal_remote_launch(test_reordered_free_per_lcore, NULL, lcore_id);
881 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
882 if (rte_eal_wait_lcore(lcore_id) < 0)
886 printf("test_reordered_free_per_lcore() failed\n");
889 else printf("test_reordered_free_per_lcore() passed\n");
891 /*----------------------------*/
892 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
893 rte_eal_remote_launch(test_random_alloc_free, NULL, lcore_id);
896 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
897 if (rte_eal_wait_lcore(lcore_id) < 0)
901 printf("test_random_alloc_free() failed\n");
904 else printf("test_random_alloc_free() passed\n");
906 /*----------------------------*/
907 ret = test_rte_malloc_type_limits();
909 printf("test_rte_malloc_type_limits() failed\n");
912 /* TODO: uncomment following line once type limits are valid */
913 /*else printf("test_rte_malloc_type_limits() passed\n");*/
915 /*----------------------------*/
916 ret = test_rte_malloc_validate();
918 printf("test_rte_malloc_validate() failed\n");
921 else printf("test_rte_malloc_validate() passed\n");
923 ret = test_alloc_socket();
925 printf("test_alloc_socket() failed\n");
928 else printf("test_alloc_socket() passed\n");
930 ret = test_multi_alloc_statistics();
932 printf("test_multi_alloc_statistics() failed\n");
936 printf("test_multi_alloc_statistics() passed\n");
941 REGISTER_TEST_COMMAND(malloc_autotest, test_malloc);