eal: simplify meson build of common directory

[dpdk.git] / lib / librte_eal / common / include / rte_eal_memconfig.h

diff --git a/lib/librte_eal/common/include/rte_eal_memconfig.h b/lib/librte_eal/common/include/rte_eal_memconfig.h
index 29fa0b6..dede2ee 100644 (file)
--- a/lib/librte_eal/common/include/rte_eal_memconfig.h
+++ b/lib/librte_eal/common/include/rte_eal_memconfig.h
@@ -5,66 +5,122 @@
 #ifndef _RTE_EAL_MEMCONFIG_H_
 #define _RTE_EAL_MEMCONFIG_H_
 
-#include <rte_config.h>
-#include <rte_tailq.h>
-#include <rte_memory.h>
-#include <rte_memzone.h>
-#include <rte_malloc_heap.h>
-#include <rte_rwlock.h>
-#include <rte_pause.h>
+#include <stdbool.h>
+
+#include <rte_compat.h>
+
+/**
+ * @file
+ *
+ * This API allows access to EAL shared memory configuration through an API.
+ */
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /**
- * the structure for the memory configuration for the RTE.
- * Used by the rte_config structure. It is separated out, as for multi-process
- * support, the memory details should be shared across instances
+ * Lock the internal EAL shared memory configuration for shared access.
+ */
+void
+rte_mcfg_mem_read_lock(void);
+
+/**
+ * Unlock the internal EAL shared memory configuration for shared access.
+ */
+void
+rte_mcfg_mem_read_unlock(void);
+
+/**
+ * Lock the internal EAL shared memory configuration for exclusive access.
+ */
+void
+rte_mcfg_mem_write_lock(void);
+
+/**
+ * Unlock the internal EAL shared memory configuration for exclusive access.
+ */
+void
+rte_mcfg_mem_write_unlock(void);
+
+/**
+ * Lock the internal EAL TAILQ list for shared access.
+ */
+void
+rte_mcfg_tailq_read_lock(void);
+
+/**
+ * Unlock the internal EAL TAILQ list for shared access.
  */
-struct rte_mem_config {
-       volatile uint32_t magic;   /**< Magic number - Sanity check. */
+void
+rte_mcfg_tailq_read_unlock(void);
 
-       /* memory topology */
-       uint32_t nchannel;    /**< Number of channels (0 if unknown). */
-       uint32_t nrank;       /**< Number of ranks (0 if unknown). */
+/**
+ * Lock the internal EAL TAILQ list for exclusive access.
+ */
+void
+rte_mcfg_tailq_write_lock(void);
 
-       /**
-        * current lock nest order
-        *  - qlock->mlock (ring/hash/lpm)
-        *  - mplock->qlock->mlock (mempool)
-        * Notice:
-        *  *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
-        */
-       rte_rwlock_t mlock;   /**< only used by memzone LIB for thread-safe. */
-       rte_rwlock_t qlock;   /**< used for tailq operation for thread safe. */
-       rte_rwlock_t mplock;  /**< only used by mempool LIB for thread-safe. */
+/**
+ * Unlock the internal EAL TAILQ list for exclusive access.
+ */
+void
+rte_mcfg_tailq_write_unlock(void);
 
-       uint32_t memzone_cnt; /**< Number of allocated memzones */
+/**
+ * Lock the internal EAL Mempool list for shared access.
+ */
+void
+rte_mcfg_mempool_read_lock(void);
 
-       /* memory segments and zones */
-       struct rte_memseg memseg[RTE_MAX_MEMSEG];    /**< Physmem descriptors. */
-       struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
+/**
+ * Unlock the internal EAL Mempool list for shared access.
+ */
+void
+rte_mcfg_mempool_read_unlock(void);
 
-       struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
+/**
+ * Lock the internal EAL Mempool list for exclusive access.
+ */
+void
+rte_mcfg_mempool_write_lock(void);
 
-       /* Heaps of Malloc per socket */
-       struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
+/**
+ * Unlock the internal EAL Mempool list for exclusive access.
+ */
+void
+rte_mcfg_mempool_write_unlock(void);
 
-       /* address of mem_config in primary process. used to map shared config into
-        * exact same address the primary process maps it.
-        */
-       uint64_t mem_cfg_addr;
-} __attribute__((__packed__));
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Lock the internal EAL Timer Library lock for exclusive access.
+ */
+__rte_experimental
+void
+rte_mcfg_timer_lock(void);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Unlock the internal EAL Timer Library lock for exclusive access.
+ */
+__rte_experimental
+void
+rte_mcfg_timer_unlock(void);
 
-inline static void
-rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
-{
-       /* wait until shared mem_config finish initialising */
-       while(mcfg->magic != RTE_MAGIC)
-               rte_pause();
-}
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * If true, pages are put in single files (per memseg list),
+ * as opposed to creating a file per page.
+ */
+__rte_experimental
+bool
+rte_mcfg_get_single_file_segments(void);
 
 #ifdef __cplusplus
 }