New upstream version 18.05

[deb_dpdk.git] / lib / librte_eal / common / malloc_mp.h

diff --git a/lib/librte_eal/common/malloc_mp.h b/lib/librte_eal/common/malloc_mp.h
new file mode 100644 (file)
index 0000000..2b86b76
--- /dev/null
+++ b/lib/librte_eal/common/malloc_mp.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#ifndef MALLOC_MP_H
+#define MALLOC_MP_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <rte_common.h>
+#include <rte_random.h>
+#include <rte_spinlock.h>
+#include <rte_tailq.h>
+
+/* forward declarations */
+struct malloc_heap;
+struct rte_memseg;
+
+/* multiprocess synchronization structures for malloc */
+enum malloc_req_type {
+       REQ_TYPE_ALLOC,     /**< ask primary to allocate */
+       REQ_TYPE_FREE,      /**< ask primary to free */
+       REQ_TYPE_SYNC       /**< ask secondary to synchronize its memory map */
+};
+
+enum malloc_req_result {
+       REQ_RESULT_SUCCESS,
+       REQ_RESULT_FAIL
+};
+
+struct malloc_req_alloc {
+       struct malloc_heap *heap;
+       uint64_t page_sz;
+       size_t elt_size;
+       int socket;
+       unsigned int flags;
+       size_t align;
+       size_t bound;
+       bool contig;
+};
+
+struct malloc_req_free {
+       RTE_STD_C11
+       union {
+               void *addr;
+               uint64_t addr_64;
+       };
+       uint64_t len;
+};
+
+struct malloc_mp_req {
+       enum malloc_req_type t;
+       RTE_STD_C11
+       union {
+               struct malloc_req_alloc alloc_req;
+               struct malloc_req_free free_req;
+       };
+       uint64_t id; /**< not to be populated by caller */
+       enum malloc_req_result result;
+};
+
+int
+register_mp_requests(void);
+
+int
+request_to_primary(struct malloc_mp_req *req);
+
+/* synchronous memory map sync request */
+int
+request_sync(void);
+
+/* functions from malloc_heap exposed here */
+int
+malloc_heap_free_pages(void *aligned_start, size_t aligned_len);
+
+struct malloc_elem *
+alloc_pages_on_heap(struct malloc_heap *heap, uint64_t pg_sz, size_t elt_size,
+               int socket, unsigned int flags, size_t align, size_t bound,
+               bool contig, struct rte_memseg **ms, int n_segs);
+
+void
+rollback_expand_heap(struct rte_memseg **ms, int n_segs,
+               struct malloc_elem *elem, void *map_addr, size_t map_len);
+
+#endif /* MALLOC_MP_H */