1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 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_malloc.h>
25 #include "malloc_elem.h"
26 #include "malloc_heap.h"
27 #include "eal_memalloc.h"
30 /* Free the memory space back to heap */
31 void rte_free(void *addr)
33 if (addr == NULL) return;
34 if (malloc_heap_free(malloc_elem_from_data(addr)) < 0)
35 RTE_LOG(ERR, EAL, "Error: Invalid memory\n");
39 * Allocate memory on specified heap.
42 rte_malloc_socket(const char *type, size_t size, unsigned int align,
45 /* return NULL if size is 0 or alignment is not power-of-2 */
46 if (size == 0 || (align && !rte_is_power_of_2(align)))
49 /* if there are no hugepages and if we are not allocating from an
50 * external heap, use memory from any socket available. checking for
51 * socket being external may return -1 in case of invalid socket, but
52 * that's OK - if there are no hugepages, it doesn't matter.
54 if (rte_malloc_heap_socket_is_external(socket_arg) != 1 &&
55 !rte_eal_has_hugepages())
56 socket_arg = SOCKET_ID_ANY;
58 return malloc_heap_alloc(type, size, socket_arg, 0,
59 align == 0 ? 1 : align, 0, false);
63 * Allocate memory on default heap.
66 rte_malloc(const char *type, size_t size, unsigned align)
68 return rte_malloc_socket(type, size, align, SOCKET_ID_ANY);
72 * Allocate zero'd memory on specified heap.
75 rte_zmalloc_socket(const char *type, size_t size, unsigned align, int socket)
77 return rte_malloc_socket(type, size, align, socket);
81 * Allocate zero'd memory on default heap.
84 rte_zmalloc(const char *type, size_t size, unsigned align)
86 return rte_zmalloc_socket(type, size, align, SOCKET_ID_ANY);
90 * Allocate zero'd memory on specified heap.
93 rte_calloc_socket(const char *type, size_t num, size_t size, unsigned align, int socket)
95 return rte_zmalloc_socket(type, num * size, align, socket);
99 * Allocate zero'd memory on default heap.
102 rte_calloc(const char *type, size_t num, size_t size, unsigned align)
104 return rte_zmalloc(type, num * size, align);
108 * Resize allocated memory.
111 rte_realloc(void *ptr, size_t size, unsigned align)
114 return rte_malloc(NULL, size, align);
116 struct malloc_elem *elem = malloc_elem_from_data(ptr);
118 RTE_LOG(ERR, EAL, "Error: memory corruption detected\n");
122 size = RTE_CACHE_LINE_ROUNDUP(size), align = RTE_CACHE_LINE_ROUNDUP(align);
123 /* check alignment matches first, and if ok, see if we can resize block */
124 if (RTE_PTR_ALIGN(ptr,align) == ptr &&
125 malloc_heap_resize(elem, size) == 0)
128 /* either alignment is off, or we have no room to expand,
130 void *new_ptr = rte_malloc(NULL, size, align);
133 const unsigned old_size = elem->size - MALLOC_ELEM_OVERHEAD;
134 rte_memcpy(new_ptr, ptr, old_size < size ? old_size : size);
141 rte_malloc_validate(const void *ptr, size_t *size)
143 const struct malloc_elem *elem = malloc_elem_from_data(ptr);
144 if (!malloc_elem_cookies_ok(elem))
147 *size = elem->size - elem->pad - MALLOC_ELEM_OVERHEAD;
152 * Function to retrieve data for heap on given socket
155 rte_malloc_get_socket_stats(int socket,
156 struct rte_malloc_socket_stats *socket_stats)
158 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
161 heap_idx = malloc_socket_to_heap_id(socket);
165 return malloc_heap_get_stats(&mcfg->malloc_heaps[heap_idx],
170 * Function to dump contents of all heaps
172 void __rte_experimental
173 rte_malloc_dump_heaps(FILE *f)
175 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
178 for (idx = 0; idx < RTE_MAX_HEAPS; idx++) {
179 fprintf(f, "Heap id: %u\n", idx);
180 malloc_heap_dump(&mcfg->malloc_heaps[idx], f);
185 rte_malloc_heap_get_socket(const char *name)
187 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
188 struct malloc_heap *heap = NULL;
193 strnlen(name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
194 strnlen(name, RTE_HEAP_NAME_MAX_LEN) ==
195 RTE_HEAP_NAME_MAX_LEN) {
199 rte_rwlock_read_lock(&mcfg->memory_hotplug_lock);
200 for (idx = 0; idx < RTE_MAX_HEAPS; idx++) {
201 struct malloc_heap *tmp = &mcfg->malloc_heaps[idx];
203 if (!strncmp(name, tmp->name, RTE_HEAP_NAME_MAX_LEN)) {
210 ret = heap->socket_id;
215 rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
221 rte_malloc_heap_socket_is_external(int socket_id)
223 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
227 if (socket_id == SOCKET_ID_ANY)
230 rte_rwlock_read_lock(&mcfg->memory_hotplug_lock);
231 for (idx = 0; idx < RTE_MAX_HEAPS; idx++) {
232 struct malloc_heap *tmp = &mcfg->malloc_heaps[idx];
234 if ((int)tmp->socket_id == socket_id) {
235 /* external memory always has large socket ID's */
236 ret = tmp->socket_id >= RTE_MAX_NUMA_NODES;
240 rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
246 * Print stats on memory type. If type is NULL, info on all types is printed
249 rte_malloc_dump_stats(FILE *f, __rte_unused const char *type)
251 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
252 unsigned int heap_id;
253 struct rte_malloc_socket_stats sock_stats;
255 /* Iterate through all initialised heaps */
256 for (heap_id = 0; heap_id < RTE_MAX_HEAPS; heap_id++) {
257 struct malloc_heap *heap = &mcfg->malloc_heaps[heap_id];
259 malloc_heap_get_stats(heap, &sock_stats);
261 fprintf(f, "Heap id:%u\n", heap_id);
262 fprintf(f, "\tHeap name:%s\n", heap->name);
263 fprintf(f, "\tHeap_size:%zu,\n", sock_stats.heap_totalsz_bytes);
264 fprintf(f, "\tFree_size:%zu,\n", sock_stats.heap_freesz_bytes);
265 fprintf(f, "\tAlloc_size:%zu,\n", sock_stats.heap_allocsz_bytes);
266 fprintf(f, "\tGreatest_free_size:%zu,\n",
267 sock_stats.greatest_free_size);
268 fprintf(f, "\tAlloc_count:%u,\n",sock_stats.alloc_count);
269 fprintf(f, "\tFree_count:%u,\n", sock_stats.free_count);
275 * TODO: Set limit to memory that can be allocated to memory type
278 rte_malloc_set_limit(__rte_unused const char *type,
279 __rte_unused size_t max)
285 * Return the IO address of a virtual address obtained through rte_malloc
288 rte_malloc_virt2iova(const void *addr)
290 const struct rte_memseg *ms;
291 struct malloc_elem *elem = malloc_elem_from_data(addr);
296 if (!elem->msl->external && rte_eal_iova_mode() == RTE_IOVA_VA)
297 return (uintptr_t) addr;
299 ms = rte_mem_virt2memseg(addr, elem->msl);
303 if (ms->iova == RTE_BAD_IOVA)
306 return ms->iova + RTE_PTR_DIFF(addr, ms->addr);
309 static struct malloc_heap *
310 find_named_heap(const char *name)
312 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
315 for (i = 0; i < RTE_MAX_HEAPS; i++) {
316 struct malloc_heap *heap = &mcfg->malloc_heaps[i];
318 if (!strncmp(name, heap->name, RTE_HEAP_NAME_MAX_LEN))
325 rte_malloc_heap_memory_add(const char *heap_name, void *va_addr, size_t len,
326 rte_iova_t iova_addrs[], unsigned int n_pages, size_t page_sz)
328 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
329 struct malloc_heap *heap = NULL;
333 if (heap_name == NULL || va_addr == NULL ||
334 page_sz == 0 || !rte_is_power_of_2(page_sz) ||
335 RTE_ALIGN(len, page_sz) != len ||
336 !rte_is_aligned(va_addr, page_sz) ||
337 ((len / page_sz) != n_pages && iova_addrs != NULL) ||
338 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
339 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
340 RTE_HEAP_NAME_MAX_LEN) {
344 rte_rwlock_write_lock(&mcfg->memory_hotplug_lock);
347 heap = find_named_heap(heap_name);
353 if (heap->socket_id < RTE_MAX_NUMA_NODES) {
354 /* cannot add memory to internal heaps */
361 rte_spinlock_lock(&heap->lock);
362 ret = malloc_heap_add_external_memory(heap, va_addr, iova_addrs, n,
364 rte_spinlock_unlock(&heap->lock);
367 rte_rwlock_write_unlock(&mcfg->memory_hotplug_lock);
373 rte_malloc_heap_memory_remove(const char *heap_name, void *va_addr, size_t len)
375 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
376 struct malloc_heap *heap = NULL;
379 if (heap_name == NULL || va_addr == NULL || len == 0 ||
380 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
381 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
382 RTE_HEAP_NAME_MAX_LEN) {
386 rte_rwlock_write_lock(&mcfg->memory_hotplug_lock);
388 heap = find_named_heap(heap_name);
394 if (heap->socket_id < RTE_MAX_NUMA_NODES) {
395 /* cannot remove memory from internal heaps */
401 rte_spinlock_lock(&heap->lock);
402 ret = malloc_heap_remove_external_memory(heap, va_addr, len);
403 rte_spinlock_unlock(&heap->lock);
406 rte_rwlock_write_unlock(&mcfg->memory_hotplug_lock);
411 struct sync_mem_walk_arg {
419 sync_mem_walk(const struct rte_memseg_list *msl, void *arg)
421 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
422 struct sync_mem_walk_arg *wa = arg;
423 size_t len = msl->page_sz * msl->memseg_arr.len;
425 if (msl->base_va == wa->va_addr &&
427 struct rte_memseg_list *found_msl;
431 msl_idx = msl - mcfg->memsegs;
432 found_msl = &mcfg->memsegs[msl_idx];
435 ret = rte_fbarray_attach(&found_msl->memseg_arr);
437 /* notify all subscribers that a memory area is about to
440 eal_memalloc_mem_event_notify(RTE_MEM_EVENT_FREE,
441 msl->base_va, msl->len);
442 ret = rte_fbarray_detach(&found_msl->memseg_arr);
446 wa->result = -rte_errno;
448 /* notify all subscribers that a new memory area was
452 eal_memalloc_mem_event_notify(
454 msl->base_va, msl->len);
463 sync_memory(const char *heap_name, void *va_addr, size_t len, bool attach)
465 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
466 struct malloc_heap *heap = NULL;
467 struct sync_mem_walk_arg wa;
470 if (heap_name == NULL || va_addr == NULL || len == 0 ||
471 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
472 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
473 RTE_HEAP_NAME_MAX_LEN) {
477 rte_rwlock_read_lock(&mcfg->memory_hotplug_lock);
480 heap = find_named_heap(heap_name);
486 /* we shouldn't be able to sync to internal heaps */
487 if (heap->socket_id < RTE_MAX_NUMA_NODES) {
493 /* find corresponding memseg list to sync to */
494 wa.va_addr = va_addr;
496 wa.result = -ENOENT; /* fail unless explicitly told to succeed */
499 /* we're already holding a read lock */
500 rte_memseg_list_walk_thread_unsafe(sync_mem_walk, &wa);
503 rte_errno = -wa.result;
508 rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
513 rte_malloc_heap_memory_attach(const char *heap_name, void *va_addr, size_t len)
515 return sync_memory(heap_name, va_addr, len, true);
519 rte_malloc_heap_memory_detach(const char *heap_name, void *va_addr, size_t len)
521 return sync_memory(heap_name, va_addr, len, false);
525 rte_malloc_heap_create(const char *heap_name)
527 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
528 struct malloc_heap *heap = NULL;
531 if (heap_name == NULL ||
532 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
533 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
534 RTE_HEAP_NAME_MAX_LEN) {
538 /* check if there is space in the heap list, or if heap with this name
541 rte_rwlock_write_lock(&mcfg->memory_hotplug_lock);
543 for (i = 0; i < RTE_MAX_HEAPS; i++) {
544 struct malloc_heap *tmp = &mcfg->malloc_heaps[i];
546 if (strncmp(heap_name, tmp->name,
547 RTE_HEAP_NAME_MAX_LEN) == 0) {
548 RTE_LOG(ERR, EAL, "Heap %s already exists\n",
555 if (strnlen(tmp->name, RTE_HEAP_NAME_MAX_LEN) == 0) {
561 RTE_LOG(ERR, EAL, "Cannot create new heap: no space\n");
567 /* we're sure that we can create a new heap, so do it */
568 ret = malloc_heap_create(heap, heap_name);
570 rte_rwlock_write_unlock(&mcfg->memory_hotplug_lock);
576 rte_malloc_heap_destroy(const char *heap_name)
578 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
579 struct malloc_heap *heap = NULL;
582 if (heap_name == NULL ||
583 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 ||
584 strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) ==
585 RTE_HEAP_NAME_MAX_LEN) {
589 rte_rwlock_write_lock(&mcfg->memory_hotplug_lock);
591 /* start from non-socket heaps */
592 heap = find_named_heap(heap_name);
594 RTE_LOG(ERR, EAL, "Heap %s not found\n", heap_name);
599 /* we shouldn't be able to destroy internal heaps */
600 if (heap->socket_id < RTE_MAX_NUMA_NODES) {
605 /* sanity checks done, now we can destroy the heap */
606 rte_spinlock_lock(&heap->lock);
607 ret = malloc_heap_destroy(heap);
609 /* if we failed, lock is still active */
611 rte_spinlock_unlock(&heap->lock);
613 rte_rwlock_write_unlock(&mcfg->memory_hotplug_lock);