df7722c75b
Currently, only segment fd's for multi-file segments are supported, while for memfd-backed no-huge memory we need single-file segments mode. Add support for single-file segments in the internal API. Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com> Acked-by: Tiwei Bie <tiwei.bie@intel.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2017-2018 Intel Corporation
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*/
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#ifndef EAL_MEMALLOC_H
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#define EAL_MEMALLOC_H
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#include <stdbool.h>
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#include <rte_memory.h>
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#include <rte_eal_memconfig.h>
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/*
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* Allocate segment of specified page size.
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*/
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struct rte_memseg *
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eal_memalloc_alloc_seg(size_t page_sz, int socket);
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/*
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* Allocate `n_segs` segments.
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*
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* Note: `ms` can be NULL.
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*
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* Note: it is possible to request best-effort allocation by setting `exact` to
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* `false`, in which case allocator will return however many pages it managed to
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* allocate successfully.
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*/
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int
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eal_memalloc_alloc_seg_bulk(struct rte_memseg **ms, int n_segs, size_t page_sz,
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int socket, bool exact);
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/*
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* Deallocate segment
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*/
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int
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eal_memalloc_free_seg(struct rte_memseg *ms);
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/*
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* Deallocate `n_segs` segments. Returns 0 on successful deallocation of all
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* segments, returns -1 on error. Any segments that could have been deallocated,
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* will be deallocated even in case of error.
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*/
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int
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eal_memalloc_free_seg_bulk(struct rte_memseg **ms, int n_segs);
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/*
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* Check if memory pointed to by `start` and of `length` that resides in
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* memseg list `msl` is IOVA-contiguous.
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*/
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bool
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eal_memalloc_is_contig(const struct rte_memseg_list *msl, void *start,
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size_t len);
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/* synchronize local memory map to primary process */
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int
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eal_memalloc_sync_with_primary(void);
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int
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eal_memalloc_mem_event_callback_register(const char *name,
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rte_mem_event_callback_t clb, void *arg);
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int
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eal_memalloc_mem_event_callback_unregister(const char *name, void *arg);
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void
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eal_memalloc_mem_event_notify(enum rte_mem_event event, const void *start,
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size_t len);
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int
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eal_memalloc_mem_alloc_validator_register(const char *name,
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rte_mem_alloc_validator_t clb, int socket_id, size_t limit);
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int
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eal_memalloc_mem_alloc_validator_unregister(const char *name, int socket_id);
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int
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eal_memalloc_mem_alloc_validate(int socket_id, size_t new_len);
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/* returns fd or -errno */
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int
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eal_memalloc_get_seg_fd(int list_idx, int seg_idx);
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/* returns 0 or -errno */
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int
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eal_memalloc_set_seg_fd(int list_idx, int seg_idx, int fd);
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/* returns 0 or -errno */
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int
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eal_memalloc_set_seg_list_fd(int list_idx, int fd);
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int
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eal_memalloc_get_seg_fd_offset(int list_idx, int seg_idx, size_t *offset);
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int
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eal_memalloc_init(void);
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#endif /* EAL_MEMALLOC_H */
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