1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
5 #ifndef _RTE_EAL_MEMCONFIG_H_
6 #define _RTE_EAL_MEMCONFIG_H_
8 #include <rte_config.h>
10 #include <rte_memory.h>
11 #include <rte_memzone.h>
12 #include <rte_malloc_heap.h>
13 #include <rte_rwlock.h>
14 #include <rte_pause.h>
21 * the structure for the memory configuration for the RTE.
22 * Used by the rte_config structure. It is separated out, as for multi-process
23 * support, the memory details should be shared across instances
25 struct rte_mem_config {
26 volatile uint32_t magic; /**< Magic number - Sanity check. */
29 uint32_t nchannel; /**< Number of channels (0 if unknown). */
30 uint32_t nrank; /**< Number of ranks (0 if unknown). */
33 * current lock nest order
34 * - qlock->mlock (ring/hash/lpm)
35 * - mplock->qlock->mlock (mempool)
37 * *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
39 rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
40 rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
41 rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
43 uint32_t memzone_cnt; /**< Number of allocated memzones */
45 /* memory segments and zones */
46 struct rte_memseg memseg[RTE_MAX_MEMSEG]; /**< Physmem descriptors. */
47 struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
49 struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
51 /* Heaps of Malloc per socket */
52 struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
54 /* address of mem_config in primary process. used to map shared config into
55 * exact same address the primary process maps it.
57 uint64_t mem_cfg_addr;
58 } __attribute__((__packed__));
62 rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
64 /* wait until shared mem_config finish initialising */
65 while(mcfg->magic != RTE_MAGIC)
73 #endif /*__RTE_EAL_MEMCONFIG_H_*/