#include <rte_lcore.h>
#include <rte_memory.h>
+#include "eal_internal_cfg.h"
+
/**
* Structure storing internal configuration (per-lcore)
*/
eal_get_virtual_area(void *requested_addr, size_t *size,
size_t page_sz, int flags, int reserve_flags);
+/**
+ * Initialize a memory segment list and create its backing storage.
+ *
+ * @param msl
+ * Memory segment list to be filled.
+ * @param name
+ * Name for the backing storage.
+ * @param page_sz
+ * Size of segment pages in the MSL.
+ * @param n_segs
+ * Number of segments.
+ * @param socket_id
+ * Socket ID. Must not be SOCKET_ID_ANY.
+ * @param heap
+ * Mark MSL as pointing to a heap.
+ * @return
+ * 0 on success, (-1) on failure and rte_errno is set.
+ */
+int
+eal_memseg_list_init_named(struct rte_memseg_list *msl, const char *name,
+ uint64_t page_sz, int n_segs, int socket_id, bool heap);
+
+/**
+ * Initialize memory segment list and create its backing storage
+ * with a name corresponding to MSL parameters.
+ *
+ * @param type_msl_idx
+ * Index of the MSL among other MSLs of the same socket and page size.
+ *
+ * @see eal_memseg_list_init_named for remaining parameters description.
+ */
+int
+eal_memseg_list_init(struct rte_memseg_list *msl, uint64_t page_sz,
+ int n_segs, int socket_id, int type_msl_idx, bool heap);
+
+/**
+ * Reserve VA space for a memory segment list
+ * previously initialized with eal_memseg_list_init().
+ *
+ * @param msl
+ * Initialized memory segment list with page size defined.
+ * @param reserve_flags
+ * Extra memory reservation flags. Can be 0 if unnecessary.
+ * @return
+ * 0 on success, (-1) on failure and rte_errno is set.
+ */
+int
+eal_memseg_list_alloc(struct rte_memseg_list *msl, int reserve_flags);
+
+/**
+ * Populate MSL, each segment is one page long.
+ *
+ * @param msl
+ * Initialized memory segment list with page size defined.
+ * @param addr
+ * Starting address of list segments.
+ * @param n_segs
+ * Number of segments to populate.
+ */
+void
+eal_memseg_list_populate(struct rte_memseg_list *msl, void *addr, int n_segs);
+
+/**
+ * Distribute available memory between MSLs.
+ *
+ * @return
+ * 0 on success, (-1) on failure.
+ */
+int
+eal_dynmem_memseg_lists_init(void);
+
+/**
+ * Preallocate hugepages for dynamic allocation.
+ *
+ * @return
+ * 0 on success, (-1) on failure.
+ */
+int
+eal_dynmem_hugepage_init(void);
+
+/**
+ * Given the list of hugepage sizes and the number of pages thereof,
+ * calculate the best number of pages of each size to fulfill the request
+ * for RAM on each NUMA node.
+ *
+ * @param memory
+ * Amounts of memory requested for each NUMA node of RTE_MAX_NUMA_NODES.
+ * @param hp_info
+ * Information about hugepages of different size.
+ * @param hp_used
+ * Receives information about used hugepages of each size.
+ * @param num_hp_info
+ * Number of elements in hp_info and hp_used.
+ * @return
+ * 0 on success, (-1) on failure.
+ */
+int
+eal_dynmem_calc_num_pages_per_socket(
+ uint64_t *memory, struct hugepage_info *hp_info,
+ struct hugepage_info *hp_used, unsigned int num_hp_info);
+
/**
* Get cpu core_id.
*
*/
uint64_t get_tsc_freq_arch(void);
+/**
+ * Allocate a free lcore to associate to a non-EAL thread.
+ *
+ * @return
+ * - the id of a lcore with role ROLE_NON_EAL on success.
+ * - RTE_MAX_LCORE if none was available.
+ */
+unsigned int eal_lcore_non_eal_allocate(void);
+
+/**
+ * Release the lcore used by a non-EAL thread.
+ * Counterpart of eal_lcore_non_eal_allocate().
+ *
+ * @param lcore_id
+ * The lcore with role ROLE_NON_EAL to release.
+ */
+void eal_lcore_non_eal_release(unsigned int lcore_id);
+
/**
* Prepare physical memory mapping
* i.e. hugepages on Linux and
eal_mem_reserve(void *requested_addr, size_t size, int flags);
/**
- * Free memory obtained by eal_mem_reserve() or eal_mem_alloc().
+ * Free memory obtained by eal_mem_reserve() and possibly allocated.
*
* If *virt* and *size* describe a part of the reserved region,
* only this part of the region is freed (accurately up to the system
int
eal_mem_set_dump(void *virt, size_t size, bool dump);
+/**
+ * Sets the runtime directory of DPDK
+ *
+ * @param run_dir
+ * The new runtime directory path of DPDK
+ * @param size
+ * The size of the new runtime directory path in bytes.
+ * @return
+ * 0 on success, (-1) on failure.
+ */
+int
+eal_set_runtime_dir(char *run_dir, size_t size);
+
+/**
+ * Get the internal configuration structure.
+ *
+ * @return
+ * A pointer to the internal configuration structure.
+ */
+struct internal_config *
+eal_get_internal_configuration(void);
+
+/**
+ * Get the current value of the rte_application_usage pointer
+ *
+ * @return
+ * Pointer to the current value of rte_application_usage .
+ */
+rte_usage_hook_t
+eal_get_application_usage_hook(void);
+
+/**
+ * Mark primary process as not supporting multi-process.
+ */
+bool __rte_mp_disable(void);
+
+/**
+ * Instruct primary process that a secondary process wants to attach.
+ */
+bool __rte_mp_enable(void);
+
+/**
+ * Init per-lcore info in current thread.
+ *
+ * @param lcore_id
+ * identifier of lcore.
+ * @param cpuset
+ * CPU affinity for this thread.
+ */
+void __rte_thread_init(unsigned int lcore_id, rte_cpuset_t *cpuset);
+
+/**
+ * Uninitialize per-lcore info for current thread.
+ */
+void __rte_thread_uninit(void);
+
#endif /* _EAL_PRIVATE_H_ */
git.droids-corp.org / dpdk.git / blobdiff