Changeset 583 for trunk/kernel/kern/rpc.h

Timestamp:

Nov 1, 2018, 12:10:42 PM (6 years ago)

Author:

alain

Message:

Improve signals.

File:

• trunk/kernel/kern/rpc.h (modified) (3 diffs)

trunk/kernel/kern/rpc.h

@@ -82 +82 @@
 
     RPC_VMM_GET_VSEG           = 20,
-    RPC_VMM_GET_PTE            = 21,
+    RPC_VMM_GLOBAL_UPDATE_PTE  = 21,
     RPC_KCM_ALLOC              = 22,
     RPC_KCM_FREE               = 23,
@@ -149 +149 @@
 
 /***********************************************************************************
- * This function contains the infinite loop executed by a RPC thread,
- * to handle all pending RPCs registered in the RPC fifo attached to a given core.
+ * This function contains the infinite loop executed by a RPC server thread,
+ * to handle pending RPCs registered in the RPC fifo attached to a given core.
+ * In each iteration in this loop, it try to handle one RPC request:
+ * - it tries to take the RPC FIFO ownership,
+ * - it consumes one request when the FIFO is not empty,
+ * - it releases the FIFO ownership,
+ * - it execute the requested service,
+ * - it unblock and send an IPI to the client thread,
+ * - it suicides if the number of RPC threads for this core is to large,
+ * - it block on IDLE and deschedule otherwise.  
  **********************************************************************************/
 void rpc_thread_func( void );
@@ -483 +491 @@
 
 /***********************************************************************************
- * [21] The RPC_VMM_GET_PTE returns in the <ppn> and <attr> arguments the PTE value
- * for a given <vpn> in a given <process> (page_fault or copy_on_write event).
- * The server cluster is supposed to be the reference cluster, and the vseg
- * containing the VPN must be registered in the reference VMM.
- * It returns an error if physical memory cannot be allocated for the missing PTE2, 
- * or for the missing page itself.
+ * [21] The RPC_VMM_GLOBAL_UPDATE_PTE can be used by a thread that is not running
+ * in reference cluster, to ask the reference cluster to update a specific entry,
+ * identified by the <vpn> argument in all GPT copies of a process identified by
+ * the <process> argument, using the values defined by <attr> and <ppn> arguments.
+ * The server cluster is supposed to be the reference cluster.
+ * It does not return any error code as the called function vmm_global_update_pte()
+ * cannot fail.
  ***********************************************************************************
  * @ cxy     : server cluster identifier.
- * @ process : [in]   pointer on process descriptor in server cluster. 
- * @ vaddr   : [in]   virtual address to be searched.
- * @ cow     : [in]   "copy_on_write" event if true / "page_fault" event if false.
- * @ attr    : [out]  address of buffer for attributes.
- * @ ppn     : [out]  address of buffer for PPN.
- * @ error   : [out]  address of buffer for error code.
- **********************************************************************************/
-void rpc_vmm_get_pte_client( cxy_t              cxy,
-                             struct process_s * process,
-                             vpn_t              vpn,
-                             bool_t             cow,
-                             uint32_t         * attr,
-                             ppn_t            * ppn,
-                             error_t          * error );
-
-void rpc_vmm_get_pte_server( xptr_t xp );
+ * @ process : [in]  pointer on process descriptor in server cluster. 
+ * @ vpn     : [in]  virtual address to be searched.
+ * @ attr    : [in]  PTE attributes.
+ * @ ppn     : [it]  PTE PPN.
+ **********************************************************************************/
+void rpc_vmm_global_update_pte_client( cxy_t              cxy,
+                                       struct process_s * process,
+                                       vpn_t              vpn,
+                                       uint32_t           attr,
+                                       ppn_t              ppn );
+
+void rpc_vmm_global_update_pte_server( xptr_t xp );
 
 /***********************************************************************************