1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
11 #include <rte_memcpy.h>
12 #include <rte_memory.h>
14 #include <rte_eal_memconfig.h>
15 #include <rte_branch_prediction.h>
16 #include <rte_debug.h>
17 #include <rte_launch.h>
18 #include <rte_per_lcore.h>
19 #include <rte_lcore.h>
20 #include <rte_common.h>
21 #include <rte_spinlock.h>
23 #include <rte_malloc.h>
24 #include "malloc_elem.h"
25 #include "malloc_heap.h"
28 /* Free the memory space back to heap */
29 void rte_free(void *addr)
31 if (addr == NULL) return;
32 if (malloc_heap_free(malloc_elem_from_data(addr)) < 0)
33 RTE_LOG(ERR, EAL, "Error: Invalid memory\n");
37 * Allocate memory on specified heap.
40 rte_malloc_socket(const char *type, size_t size, unsigned int align,
43 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
47 /* return NULL if size is 0 or alignment is not power-of-2 */
48 if (size == 0 || (align && !rte_is_power_of_2(align)))
51 if (!rte_eal_has_hugepages())
52 socket_arg = SOCKET_ID_ANY;
54 if (socket_arg == SOCKET_ID_ANY)
55 socket = malloc_get_numa_socket();
59 /* Check socket parameter */
60 if (socket >= RTE_MAX_NUMA_NODES)
63 ret = malloc_heap_alloc(&mcfg->malloc_heaps[socket], type,
64 size, 0, align == 0 ? 1 : align, 0, false);
65 if (ret != NULL || socket_arg != SOCKET_ID_ANY)
69 for (i = 0; i < RTE_MAX_NUMA_NODES; i++) {
70 /* we already tried this one */
74 ret = malloc_heap_alloc(&mcfg->malloc_heaps[i], type,
75 size, 0, align == 0 ? 1 : align, 0, false);
84 * Allocate memory on default heap.
87 rte_malloc(const char *type, size_t size, unsigned align)
89 return rte_malloc_socket(type, size, align, SOCKET_ID_ANY);
93 * Allocate zero'd memory on specified heap.
96 rte_zmalloc_socket(const char *type, size_t size, unsigned align, int socket)
98 return rte_malloc_socket(type, size, align, socket);
102 * Allocate zero'd memory on default heap.
105 rte_zmalloc(const char *type, size_t size, unsigned align)
107 return rte_zmalloc_socket(type, size, align, SOCKET_ID_ANY);
111 * Allocate zero'd memory on specified heap.
114 rte_calloc_socket(const char *type, size_t num, size_t size, unsigned align, int socket)
116 return rte_zmalloc_socket(type, num * size, align, socket);
120 * Allocate zero'd memory on default heap.
123 rte_calloc(const char *type, size_t num, size_t size, unsigned align)
125 return rte_zmalloc(type, num * size, align);
129 * Resize allocated memory.
132 rte_realloc(void *ptr, size_t size, unsigned align)
135 return rte_malloc(NULL, size, align);
137 struct malloc_elem *elem = malloc_elem_from_data(ptr);
139 RTE_LOG(ERR, EAL, "Error: memory corruption detected\n");
143 size = RTE_CACHE_LINE_ROUNDUP(size), align = RTE_CACHE_LINE_ROUNDUP(align);
144 /* check alignment matches first, and if ok, see if we can resize block */
145 if (RTE_PTR_ALIGN(ptr,align) == ptr &&
146 malloc_heap_resize(elem, size) == 0)
149 /* either alignment is off, or we have no room to expand,
151 void *new_ptr = rte_malloc(NULL, size, align);
154 const unsigned old_size = elem->size - MALLOC_ELEM_OVERHEAD;
155 rte_memcpy(new_ptr, ptr, old_size < size ? old_size : size);
162 rte_malloc_validate(const void *ptr, size_t *size)
164 const struct malloc_elem *elem = malloc_elem_from_data(ptr);
165 if (!malloc_elem_cookies_ok(elem))
168 *size = elem->size - elem->pad - MALLOC_ELEM_OVERHEAD;
173 * Function to retrieve data for heap on given socket
176 rte_malloc_get_socket_stats(int socket,
177 struct rte_malloc_socket_stats *socket_stats)
179 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
181 if (socket >= RTE_MAX_NUMA_NODES || socket < 0)
184 return malloc_heap_get_stats(&mcfg->malloc_heaps[socket], socket_stats);
188 * Function to dump contents of all heaps
190 void __rte_experimental
191 rte_malloc_dump_heaps(FILE *f)
193 struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
196 for (idx = 0; idx < rte_socket_count(); idx++) {
197 unsigned int socket = rte_socket_id_by_idx(idx);
198 fprintf(f, "Heap on socket %i:\n", socket);
199 malloc_heap_dump(&mcfg->malloc_heaps[socket], f);
205 * Print stats on memory type. If type is NULL, info on all types is printed
208 rte_malloc_dump_stats(FILE *f, __rte_unused const char *type)
211 struct rte_malloc_socket_stats sock_stats;
212 /* Iterate through all initialised heaps */
213 for (socket=0; socket< RTE_MAX_NUMA_NODES; socket++) {
214 if ((rte_malloc_get_socket_stats(socket, &sock_stats) < 0))
217 fprintf(f, "Socket:%u\n", socket);
218 fprintf(f, "\tHeap_size:%zu,\n", sock_stats.heap_totalsz_bytes);
219 fprintf(f, "\tFree_size:%zu,\n", sock_stats.heap_freesz_bytes);
220 fprintf(f, "\tAlloc_size:%zu,\n", sock_stats.heap_allocsz_bytes);
221 fprintf(f, "\tGreatest_free_size:%zu,\n",
222 sock_stats.greatest_free_size);
223 fprintf(f, "\tAlloc_count:%u,\n",sock_stats.alloc_count);
224 fprintf(f, "\tFree_count:%u,\n", sock_stats.free_count);
230 * TODO: Set limit to memory that can be allocated to memory type
233 rte_malloc_set_limit(__rte_unused const char *type,
234 __rte_unused size_t max)
240 * Return the IO address of a virtual address obtained through rte_malloc
243 rte_malloc_virt2iova(const void *addr)
245 const struct rte_memseg *ms;
246 struct malloc_elem *elem = malloc_elem_from_data(addr);
251 if (rte_eal_iova_mode() == RTE_IOVA_VA)
252 return (uintptr_t) addr;
254 ms = rte_mem_virt2memseg(addr, elem->msl);
258 if (ms->iova == RTE_BAD_IOVA)
261 return ms->iova + RTE_PTR_DIFF(addr, ms->addr);