ff909fe21f
Implement rte_memzone_free which, as its name implies, would free a memzone. Currently memzone are tracked in an array and cannot be free. To be able to reuse the same array to track memzones, we have to change how we keep track of reserved memzones. With this patch, any memzone with addr NULL is not used, so we also need to change how we look for the next memzone entry free. Add new unit test for rte_memzone_free API. Signed-off-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
101 lines
3.6 KiB
C
101 lines
3.6 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTE_EAL_MEMCONFIG_H_
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#define _RTE_EAL_MEMCONFIG_H_
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#include <rte_tailq.h>
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#include <rte_memory.h>
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#include <rte_memzone.h>
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#include <rte_malloc_heap.h>
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#include <rte_rwlock.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* the structure for the memory configuration for the RTE.
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* Used by the rte_config structure. It is separated out, as for multi-process
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* support, the memory details should be shared across instances
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*/
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struct rte_mem_config {
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volatile uint32_t magic; /**< Magic number - Sanity check. */
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/* memory topology */
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uint32_t nchannel; /**< Number of channels (0 if unknown). */
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uint32_t nrank; /**< Number of ranks (0 if unknown). */
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/**
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* current lock nest order
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* - qlock->mlock (ring/hash/lpm)
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* - mplock->qlock->mlock (mempool)
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* Notice:
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* *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
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*/
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rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
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rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
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rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
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uint32_t memzone_cnt; /**< Number of allocated memzones */
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/* memory segments and zones */
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struct rte_memseg memseg[RTE_MAX_MEMSEG]; /**< Physmem descriptors. */
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struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
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struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
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/* Heaps of Malloc per socket */
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struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
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/* address of mem_config in primary process. used to map shared config into
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* exact same address the primary process maps it.
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*/
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uint64_t mem_cfg_addr;
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} __attribute__((__packed__));
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inline static void
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rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
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{
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/* wait until shared mem_config finish initialising */
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while(mcfg->magic != RTE_MAGIC)
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rte_pause();
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /*__RTE_EAL_MEMCONFIG_H_*/
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