Changeset 337 for trunk/hal/tsar_mips32/drivers

Timestamp:

Aug 7, 2017, 12:50:17 PM (7 years ago)

Author:

alain

Message:

Introduce the delayed context switch if current thread has a lock.

File:

• trunk/hal/tsar_mips32/drivers/soclib_pic.c (modified) (1 diff)

trunk/hal/tsar_mips32/drivers/soclib_pic.c

@@ -139 +139 @@
             assert( (index == core->lid) , __FUNCTION__ , "illegal IPI index" );
 
-            // acknowledge WTI
+            // read mailbox content to acknowledge WTI,
             uint32_t * base = soclib_pic_xcu_base();
             ack = base[(XCU_WTI_REG << 5) | core->lid];
-
+            
             // check RPC FIFO,  and activate or create a RPC thread
-            // it there is a pending RPC request
-            rpc_check();
+            // condition is always true, but we must use the ack value
+            if( ack + 1 ) rpc_check();
         }
         else                                    // it is an external device