summaryrefslogtreecommitdiff
path: root/lib/librte_malloc/rte_malloc.c
blob: c960da1d97796fe59dbca8d80f5ed7a1a2846352 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
/*-
 *   BSD LICENSE
 * 
 *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
 *   All rights reserved.
 * 
 *   Redistribution and use in source and binary forms, with or without 
 *   modification, are permitted provided that the following conditions 
 *   are met:
 * 
 *     * Redistributions of source code must retain the above copyright 
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright 
 *       notice, this list of conditions and the following disclaimer in 
 *       the documentation and/or other materials provided with the 
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its 
 *       contributors may be used to endorse or promote products derived 
 *       from this software without specific prior written permission.
 * 
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 */

#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <sys/queue.h>

#include <rte_memcpy.h>
#include <rte_memory.h>
#include <rte_memzone.h>
#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_eal_memconfig.h>
#include <rte_branch_prediction.h>
#include <rte_debug.h>
#include <rte_launch.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_common.h>
#include <rte_spinlock.h>

#include <rte_malloc.h>
#include "malloc_elem.h"
#include "malloc_heap.h"


/* Free the memory space back to heap */
void rte_free(void *addr)
{
	if (addr == NULL) return;
	if (malloc_elem_free(malloc_elem_from_data(addr)) < 0)
		rte_panic("Fatal error: Invalid memory\n");
}

/*
 * Allocate memory on specified heap.
 */
void *
rte_malloc_socket(const char *type, size_t size, unsigned align, int socket_arg)
{
	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
	int socket, i;
	void *ret;

	/* return NULL if size is 0 or alignment is not power-of-2 */
	if (size == 0 || !rte_is_power_of_2(align))
		return NULL;

	if (socket_arg == SOCKET_ID_ANY)
		socket = malloc_get_numa_socket();
	else
		socket = socket_arg;

	/* Check socket parameter */
	if (socket >= RTE_MAX_NUMA_NODES)
		return NULL;

	ret = malloc_heap_alloc(&mcfg->malloc_heaps[socket], type,
				size, align == 0 ? 1 : align);
	if (ret != NULL || socket_arg != SOCKET_ID_ANY)
		return ret;

	/* try other heaps */
	for (i = 0; i < RTE_MAX_NUMA_NODES; i++) {
		/* we already tried this one */
		if (i == socket)
			continue;

		ret = malloc_heap_alloc(&mcfg->malloc_heaps[i], type,
					size, align == 0 ? 1 : align);
		if (ret != NULL)
			return ret;
	}

	return NULL;
}

/*
 * Allocate memory on default heap.
 */
void *
rte_malloc(const char *type, size_t size, unsigned align)
{
	return rte_malloc_socket(type, size, align, SOCKET_ID_ANY);
}

/*
 * Allocate zero'd memory on specified heap.
 */
void *
rte_zmalloc_socket(const char *type, size_t size, unsigned align, int socket)
{
	void *ptr = rte_malloc_socket(type, size, align, socket);

	if (ptr != NULL)
		memset(ptr, 0, size);
	return ptr;
}

/*
 * Allocate zero'd memory on default heap.
 */
void *
rte_zmalloc(const char *type, size_t size, unsigned align)
{
	return rte_zmalloc_socket(type, size, align, SOCKET_ID_ANY);
}

/*
 * Allocate zero'd memory on specified heap.
 */
void *
rte_calloc_socket(const char *type, size_t num, size_t size, unsigned align, int socket)
{
	return rte_zmalloc_socket(type, num * size, align, socket);
}

/*
 * Allocate zero'd memory on default heap.
 */
void *
rte_calloc(const char *type, size_t num, size_t size, unsigned align)
{
	return rte_zmalloc(type, num * size, align);
}

/*
 * Resize allocated memory.
 */
void *
rte_realloc(void *ptr, size_t size, unsigned align)
{
	if (ptr == NULL)
		return rte_malloc(NULL, size, align);

	struct malloc_elem *elem = malloc_elem_from_data(ptr);
	if (elem == NULL)
		rte_panic("Fatal error: memory corruption detected\n");

	size = CACHE_LINE_ROUNDUP(size), align = CACHE_LINE_ROUNDUP(align);
	/* check alignment matches first, and if ok, see if we can resize block */
	if (RTE_PTR_ALIGN(ptr,align) == ptr &&
			malloc_elem_resize(elem, size) == 0)
		return ptr;

	/* either alignment is off, or we have no room to expand,
	 * so move data. */
	void *new_ptr = rte_malloc(NULL, size, align);
	if (new_ptr == NULL)
		return NULL;
	const unsigned old_size = elem->size - MALLOC_ELEM_OVERHEAD;
	rte_memcpy(new_ptr, ptr, old_size < size ? old_size : size);
	rte_free(ptr);

	return new_ptr;
}

int
rte_malloc_validate(const void *ptr, size_t *size)
{
	const struct malloc_elem *elem = malloc_elem_from_data(ptr);
	if (!malloc_elem_cookies_ok(elem))
		return -1;
	if (size != NULL)
		*size = elem->size - elem->pad - MALLOC_ELEM_OVERHEAD;
	return 0;
}

/*
 * Function to retrieve data for heap on given socket
 */
int
rte_malloc_get_socket_stats(int socket,
		struct rte_malloc_socket_stats *socket_stats)
{
	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;

	if (socket >= RTE_MAX_NUMA_NODES || socket < 0)
		return -1;

	return malloc_heap_get_stats(&mcfg->malloc_heaps[socket], socket_stats);
}

/*
 * Print stats on memory type. If type is NULL, info on all types is printed
 */
void
rte_malloc_dump_stats(__rte_unused const char *type)
{
	unsigned int socket;
	struct rte_malloc_socket_stats sock_stats;
	/* Iterate through all initialised heaps */
	for (socket=0; socket< RTE_MAX_NUMA_NODES; socket++) {
		if ((rte_malloc_get_socket_stats(socket, &sock_stats) < 0))
			continue;

		printf("Socket:%u\n", socket);
		printf("\tHeap_size:%zu,\n", sock_stats.heap_totalsz_bytes);
		printf("\tFree_size:%zu,\n", sock_stats.heap_freesz_bytes);
		printf("\tAlloc_size:%zu,\n", sock_stats.heap_allocsz_bytes);
		printf("\tGreatest_free_size:%zu,\n",
				sock_stats.greatest_free_size);
		printf("\tAlloc_count:%u,\n",sock_stats.alloc_count);
		printf("\tFree_count:%u,\n", sock_stats.free_count);
	}
	return;
}

/*
 * TODO: Set limit to memory that can be allocated to memory type
 */
int
rte_malloc_set_limit(__rte_unused const char *type,
		__rte_unused size_t max)
{
	return 0;
}

/*
 * Return the physical address of a virtual address obtained through rte_malloc
 */
phys_addr_t
rte_malloc_virt2phy(const void *addr)
{
	const struct malloc_elem *elem = malloc_elem_from_data(addr);
	if (elem == NULL)
		return 0;
	return elem->mz->phys_addr + ((uintptr_t)addr - (uintptr_t)elem->mz->addr);
}