Changeset 635 for trunk/kernel/kern/cluster.c

Timestamp:

Jun 26, 2019, 11:42:37 AM (5 years ago)

Author:

alain

Message:

This version is a major evolution: The physical memory allocators,
defined in the kmem.c, ppm.c, and kcm.c files have been modified
to support remote accesses. The RPCs that were previously user
to allocate physical memory in a remote cluster have been removed.
This has been done to cure a dead-lock in case of concurrent page-faults.

This version 2.2 has been tested on a (4 clusters / 2 cores per cluster)
TSAR architecture, for both the "sort" and the "fft" applications.

File:

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

trunk/kernel/kern/cluster.c

@@ -4 +4 @@
  * Author  Ghassan Almaless (2008,2009,2010,2011,2012)
  *         Mohamed Lamine Karaoui (2015)
- *         Alain Greiner (2016,2017,2018)
+ *         Alain Greiner (2016,2017,2018,2019)
  *
  * Copyright (c) UPMC Sorbonne Universites
@@ -109 +109 @@
         cluster_t * cluster = LOCAL_CLUSTER;
 
-    // initialize the lock protecting the embedded kcm allocator
-        busylock_init( &cluster->kcm_lock , LOCK_CLUSTER_KCM );
-
 #if DEBUG_CLUSTER_INIT
 uint32_t   cycle = (uint32_t)hal_get_cycles();
@@ -148 +145 @@
 
     // initialises embedded KCM
-        kcm_init( &cluster->kcm , KMEM_KCM );
+    uint32_t  i;
+    for( i = 0 ; i < 6 ; i++ ) kcm_init( &cluster->kcm[i] , i+6 );
 
 #if( DEBUG_CLUSTER_INIT & 1 )
 cycle = (uint32_t)hal_get_cycles();
 if( DEBUG_CLUSTER_INIT < cycle )
-printk("\n[%s] KCM initialized in cluster %x at cycle %d\n",
+printk("\n[%s] KCM[6:11] initialized in cluster %x at cycle %d\n",
 __FUNCTION__ , local_cxy , hal_get_cycles() );
 #endif