1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2019 Intel Corporation
11 #include <rte_errno.h>
12 #include <rte_memcpy.h>
13 #include <rte_memory.h>
15 #include <rte_eal_memconfig.h>
16 #include <rte_branch_prediction.h>
17 #include <rte_debug.h>
18 #include <rte_launch.h>
19 #include <rte_per_lcore.h>
20 #include <rte_lcore.h>
21 #include <rte_common.h>
22 #include <rte_spinlock.h>
24 #include <rte_eal_trace.h>
26 #include <rte_malloc.h>
27 #include "malloc_elem.h"
28 #include "malloc_heap.h"
29 #include "eal_memalloc.h"
30 #include "eal_memcfg.h"
31 #include "eal_private.h"
34 /* Free the memory space back to heap */
36 mem_free(void *addr, const bool trace_ena)
39 rte_eal_trace_mem_free(addr);
41 if (addr == NULL) return;
42 if (malloc_heap_free(malloc_elem_from_data(addr)) < 0)
43 RTE_LOG(ERR, EAL, "Error: Invalid memory\n");
49 return mem_free(addr, true);
53 eal_free_no_trace(void *addr)
55 return mem_free(addr, false);
59 malloc_socket(const char *type, size_t size, unsigned int align,
60 int socket_arg, const bool trace_ena)
64 /* return NULL if size is 0 or alignment is not power-of-2 */
65 if (size == 0 || (align && !rte_is_power_of_2(align)))
68 /* if there are no hugepages and if we are not allocating from an
69 * external heap, use memory from any socket available. checking for
70 * socket being external may return -1 in case of invalid socket, but
71 * that's OK - if there are no hugepages, it doesn't matter.
73 if (rte_malloc_heap_socket_is_external(socket_arg) != 1 &&
74 !rte_eal_has_hugepages())
75 socket_arg = SOCKET_ID_ANY;
77 ptr = malloc_heap_alloc(type, size, socket_arg, 0,
78 align == 0 ? 1 : align, 0, false);
81 rte_eal_trace_mem_malloc(type, size, align, socket_arg, ptr);
86 * Allocate memory on specified heap.
89 rte_malloc_socket(const char *type, size_t size, unsigned int align,
92 return malloc_socket(type, size, align, socket_arg, true);
96 eal_malloc_no_trace(const char *type, size_t size, unsigned int align)
98 return malloc_socket(type, size, align, SOCKET_ID_ANY, false);
102 * Allocate memory on default heap.
105 rte_malloc(const char *type, size_t size, unsigned align)
107 return rte_malloc_socket(type, size, align, SOCKET_ID_ANY);
111 * Allocate zero'd memory on specified heap.
114 rte_zmalloc_socket(const char *type, size_t size, unsigned align, int socket)
116 void *ptr = rte_malloc_socket(type, size, align, socket);
118 #ifdef RTE_MALLOC_DEBUG
120 * If DEBUG is enabled, then freed memory is marked with poison
121 * value and set to zero on allocation.
122 * If DEBUG is not enabled then memory is already zeroed.
125 memset(ptr, 0, size);
128 rte_eal_trace_mem_zmalloc(type, size, align, socket, ptr);
133 * Allocate zero'd memory on default heap.
136 rte_zmalloc(const char *type, size_t size, unsigned align)
138 return rte_zmalloc_socket(type, size, align, SOCKET_ID_ANY);
142 * Allocate zero'd memory on specified heap.
145 rte_calloc_socket(const char *type, size_t num, size_t size, unsigned align, int socket)
147 return rte_zmalloc_socket(type, num * size, align, socket);
151 * Allocate zero'd memory on default heap.
154 rte_calloc(const char *type, size_t num, size_t size, unsigned align)
156 return rte_zmalloc(type, num * size, align);
160 * Resize allocated memory on specified heap.
163 rte_realloc_socket(void *ptr, size_t size, unsigned int align, int socket)
168 return rte_malloc_socket(NULL, size, align, socket);
170 struct malloc_elem *elem = malloc_elem_from_data(ptr);
172 RTE_LOG(ERR, EAL, "Error: memory corruption detected\n");
178 size = RTE_CACHE_LINE_ROUNDUP(size), align = RTE_CACHE_LINE_ROUNDUP(align);
180 /* check requested socket id and alignment matches first, and if ok,
181 * see if we can resize block
183 if ((socket == SOCKET_ID_ANY ||
184 (unsigned int)socket == elem->heap->socket_id) &&
185 RTE_PTR_ALIGN(ptr, align) == ptr &&
186 malloc_heap_resize(elem, size) == 0) {
187 rte_eal_trace_mem_realloc(size, align, socket, ptr);
189 asan_set_redzone(elem, user_size);
194 /* either requested socket id doesn't match, alignment is off
195 * or we have no room to expand,
198 void *new_ptr = rte_malloc_socket(NULL, size, align, socket);
201 /* elem: |pad|data_elem|data|trailer| */
202 const size_t old_size = old_malloc_size(elem);
203 rte_memcpy(new_ptr, ptr, old_size < size ? old_size : size);
206 rte_eal_trace_mem_realloc(size, align, socket, new_ptr);
211 * Resize allocated memory.
214 rte_realloc(void *ptr, size_t size, unsigned int align)
216 return rte_realloc_socket(ptr, size, align, SOCKET_ID_ANY);
220 rte_malloc_validate(const void *ptr, size_t *size)
222 const struct malloc_elem *elem = malloc_elem_from_data(ptr);
223 if (!malloc_elem_cookies_ok(elem))
226 *size = elem->size - elem->pad - MALLOC_ELEM_OVERHEAD;
231 * Function to retrieve data for heap on given socket
234 rte_malloc_get_socket_stats(int socket,
235 struct rte_malloc_socket_stats *socket_stats)
237 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
240 heap_idx = malloc_socket_to_heap_id(socket);
244 return malloc_heap_get_stats(&mcfg->malloc_heaps[heap_idx],
249 * Function to dump contents of all heaps
252 rte_malloc_dump_heaps(FILE *f)
254 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
257 for (idx = 0; idx < RTE_MAX_HEAPS; idx++) {
258 fprintf(f, "Heap id: %u\n", idx);
259 malloc_heap_dump(&mcfg->malloc_heaps[idx], f);
264 rte_malloc_heap_get_socket(const char *name)
266 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
267 struct malloc_heap *heap = NULL;
272 strnlen(name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
273 strnlen(name, RTE_HEAP_NAME_MAX_LEN) ==
274 RTE_HEAP_NAME_MAX_LEN) {
278 rte_mcfg_mem_read_lock();
279 for (idx = 0; idx < RTE_MAX_HEAPS; idx++) {
280 struct malloc_heap *tmp = &mcfg->malloc_heaps[idx];
282 if (!strncmp(name, tmp->name, RTE_HEAP_NAME_MAX_LEN)) {
289 ret = heap->socket_id;
294 rte_mcfg_mem_read_unlock();
300 rte_malloc_heap_socket_is_external(int socket_id)
302 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
306 if (socket_id == SOCKET_ID_ANY)
309 rte_mcfg_mem_read_lock();
310 for (idx = 0; idx < RTE_MAX_HEAPS; idx++) {
311 struct malloc_heap *tmp = &mcfg->malloc_heaps[idx];
313 if ((int)tmp->socket_id == socket_id) {
314 /* external memory always has large socket ID's */
315 ret = tmp->socket_id >= RTE_MAX_NUMA_NODES;
319 rte_mcfg_mem_read_unlock();
325 * Print stats on memory type. If type is NULL, info on all types is printed
328 rte_malloc_dump_stats(FILE *f, __rte_unused const char *type)
330 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
331 unsigned int heap_id;
332 struct rte_malloc_socket_stats sock_stats;
334 /* Iterate through all initialised heaps */
335 for (heap_id = 0; heap_id < RTE_MAX_HEAPS; heap_id++) {
336 struct malloc_heap *heap = &mcfg->malloc_heaps[heap_id];
338 malloc_heap_get_stats(heap, &sock_stats);
340 fprintf(f, "Heap id:%u\n", heap_id);
341 fprintf(f, "\tHeap name:%s\n", heap->name);
342 fprintf(f, "\tHeap_size:%zu,\n", sock_stats.heap_totalsz_bytes);
343 fprintf(f, "\tFree_size:%zu,\n", sock_stats.heap_freesz_bytes);
344 fprintf(f, "\tAlloc_size:%zu,\n", sock_stats.heap_allocsz_bytes);
345 fprintf(f, "\tGreatest_free_size:%zu,\n",
346 sock_stats.greatest_free_size);
347 fprintf(f, "\tAlloc_count:%u,\n",sock_stats.alloc_count);
348 fprintf(f, "\tFree_count:%u,\n", sock_stats.free_count);
354 * TODO: Set limit to memory that can be allocated to memory type
357 rte_malloc_set_limit(__rte_unused const char *type,
358 __rte_unused size_t max)
364 * Return the IO address of a virtual address obtained through rte_malloc
367 rte_malloc_virt2iova(const void *addr)
369 const struct rte_memseg *ms;
370 struct malloc_elem *elem = malloc_elem_from_data(addr);
375 if (!elem->msl->external && rte_eal_iova_mode() == RTE_IOVA_VA)
376 return (uintptr_t) addr;
378 ms = rte_mem_virt2memseg(addr, elem->msl);
382 if (ms->iova == RTE_BAD_IOVA)
385 return ms->iova + RTE_PTR_DIFF(addr, ms->addr);
388 static struct malloc_heap *
389 find_named_heap(const char *name)
391 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
394 for (i = 0; i < RTE_MAX_HEAPS; i++) {
395 struct malloc_heap *heap = &mcfg->malloc_heaps[i];
397 if (!strncmp(name, heap->name, RTE_HEAP_NAME_MAX_LEN))
404 rte_malloc_heap_memory_add(const char *heap_name, void *va_addr, size_t len,
405 rte_iova_t iova_addrs[], unsigned int n_pages, size_t page_sz)
407 struct malloc_heap *heap = NULL;
408 struct rte_memseg_list *msl;
412 if (heap_name == NULL || va_addr == NULL ||
413 page_sz == 0 || !rte_is_power_of_2(page_sz) ||
414 RTE_ALIGN(len, page_sz) != len ||
415 !rte_is_aligned(va_addr, page_sz) ||
416 ((len / page_sz) != n_pages && iova_addrs != NULL) ||
417 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
418 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
419 RTE_HEAP_NAME_MAX_LEN) {
423 rte_mcfg_mem_write_lock();
426 heap = find_named_heap(heap_name);
432 if (heap->socket_id < RTE_MAX_NUMA_NODES) {
433 /* cannot add memory to internal heaps */
440 msl = malloc_heap_create_external_seg(va_addr, iova_addrs, n, page_sz,
441 heap_name, heap->socket_id);
447 rte_spinlock_lock(&heap->lock);
448 ret = malloc_heap_add_external_memory(heap, msl);
449 msl->heap = 1; /* mark it as heap segment */
450 rte_spinlock_unlock(&heap->lock);
453 rte_mcfg_mem_write_unlock();
459 rte_malloc_heap_memory_remove(const char *heap_name, void *va_addr, size_t len)
461 struct malloc_heap *heap = NULL;
462 struct rte_memseg_list *msl;
465 if (heap_name == NULL || va_addr == NULL || len == 0 ||
466 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
467 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
468 RTE_HEAP_NAME_MAX_LEN) {
472 rte_mcfg_mem_write_lock();
474 heap = find_named_heap(heap_name);
480 if (heap->socket_id < RTE_MAX_NUMA_NODES) {
481 /* cannot remove memory from internal heaps */
487 msl = malloc_heap_find_external_seg(va_addr, len);
493 rte_spinlock_lock(&heap->lock);
494 ret = malloc_heap_remove_external_memory(heap, va_addr, len);
495 rte_spinlock_unlock(&heap->lock);
499 ret = malloc_heap_destroy_external_seg(msl);
502 rte_mcfg_mem_write_unlock();
508 sync_memory(const char *heap_name, void *va_addr, size_t len, bool attach)
510 struct malloc_heap *heap = NULL;
511 struct rte_memseg_list *msl;
514 if (heap_name == NULL || va_addr == NULL || len == 0 ||
515 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
516 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
517 RTE_HEAP_NAME_MAX_LEN) {
521 rte_mcfg_mem_read_lock();
524 heap = find_named_heap(heap_name);
530 /* we shouldn't be able to sync to internal heaps */
531 if (heap->socket_id < RTE_MAX_NUMA_NODES) {
537 /* find corresponding memseg list to sync to */
538 msl = malloc_heap_find_external_seg(va_addr, len);
545 ret = rte_fbarray_attach(&msl->memseg_arr);
547 /* notify all subscribers that a new memory area was
550 eal_memalloc_mem_event_notify(RTE_MEM_EVENT_ALLOC,
557 /* notify all subscribers that a memory area is about to
560 eal_memalloc_mem_event_notify(RTE_MEM_EVENT_FREE,
561 msl->base_va, msl->len);
562 ret = rte_fbarray_detach(&msl->memseg_arr);
569 rte_mcfg_mem_read_unlock();
574 rte_malloc_heap_memory_attach(const char *heap_name, void *va_addr, size_t len)
576 return sync_memory(heap_name, va_addr, len, true);
580 rte_malloc_heap_memory_detach(const char *heap_name, void *va_addr, size_t len)
582 return sync_memory(heap_name, va_addr, len, false);
586 rte_malloc_heap_create(const char *heap_name)
588 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
589 struct malloc_heap *heap = NULL;
592 if (heap_name == NULL ||
593 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
594 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
595 RTE_HEAP_NAME_MAX_LEN) {
599 /* check if there is space in the heap list, or if heap with this name
602 rte_mcfg_mem_write_lock();
604 for (i = 0; i < RTE_MAX_HEAPS; i++) {
605 struct malloc_heap *tmp = &mcfg->malloc_heaps[i];
607 if (strncmp(heap_name, tmp->name,
608 RTE_HEAP_NAME_MAX_LEN) == 0) {
609 RTE_LOG(ERR, EAL, "Heap %s already exists\n",
616 if (strnlen(tmp->name, RTE_HEAP_NAME_MAX_LEN) == 0) {
622 RTE_LOG(ERR, EAL, "Cannot create new heap: no space\n");
628 /* we're sure that we can create a new heap, so do it */
629 ret = malloc_heap_create(heap, heap_name);
631 rte_mcfg_mem_write_unlock();
637 rte_malloc_heap_destroy(const char *heap_name)
639 struct malloc_heap *heap = NULL;
642 if (heap_name == NULL ||
643 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
644 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
645 RTE_HEAP_NAME_MAX_LEN) {
649 rte_mcfg_mem_write_lock();
651 /* start from non-socket heaps */
652 heap = find_named_heap(heap_name);
654 RTE_LOG(ERR, EAL, "Heap %s not found\n", heap_name);
659 /* we shouldn't be able to destroy internal heaps */
660 if (heap->socket_id < RTE_MAX_NUMA_NODES) {
665 /* sanity checks done, now we can destroy the heap */
666 rte_spinlock_lock(&heap->lock);
667 ret = malloc_heap_destroy(heap);
669 /* if we failed, lock is still active */
671 rte_spinlock_unlock(&heap->lock);
673 rte_mcfg_mem_write_unlock();