Changeset 627 for trunk/kernel/kern

Timestamp:

May 1, 2019, 5:13:47 PM (6 years ago)

Author:

alain

Message:

Replace the queuelock protectingthe FAT by a rwlock in the FATFS.

File:

• trunk/kernel/kern/cluster.c (modified) (3 diffs)

trunk/kernel/kern/cluster.c

@@ -700 +700 @@
     xptr_t        txt0_xp;
     xptr_t        txt0_lock_xp;
+    uint32_t      pref_nr;       // number of owned processes in cluster cxy
 
 assert( (cluster_is_undefined( cxy ) == false), "illegal cluster index" );
@@ -707 +708 @@
     lock_xp = XPTR( cxy , &LOCAL_CLUSTER->pmgr.local_lock );
 
+    // get number of owned processes in cluster cxy
+    pref_nr = hal_remote_l32( XPTR( cxy , &LOCAL_CLUSTER->pmgr.pref_nr ) );
+
+    // display nothing if no user process in cluster cxy
+    if( (owned != false) && (pref_nr < 2) ) return;
+    
     // get pointers on TXT0 chdev
     txt0_xp  = chdev_dir.txt_tx[0];
@@ -721 +728 @@
     remote_busylock_acquire( txt0_lock_xp );
      
-    // display header
     nolock_printk("\n***** processes in cluster %x / cycle %d\n",
     cxy , (uint32_t)hal_get_cycles() );