Changeset 629 for trunk/kernel/kern/process.c

Timestamp:

May 17, 2019, 9:27:04 AM (5 years ago)

Author:

alain

Message:

Remove the "giant" rwlock protecting the GPT, and
use the GPT_LOCKED attribute in each PTE to prevent
concurrent modifications of one GPT entry.
The version number has been incremented to 2.1.

File:

• trunk/kernel/kern/process.c (modified) (4 diffs)

trunk/kernel/kern/process.c

@@ -166 +166 @@
 #endif
 
-    // initialize GPT and VSL locks
-    remote_rwlock_init( XPTR( local_cxy , &vmm->gpt_lock ) , LOCK_VMM_GPT );
+    // initialize VSL locks
         remote_rwlock_init( XPTR( local_cxy , &vmm->vsl_lock ) , LOCK_VMM_VSL );
 
@@ -426 +425 @@
 
     // initialize GPT and VSL locks
-    remote_rwlock_init( XPTR( local_cxy , &vmm->gpt_lock ) , LOCK_VMM_GPT );
         remote_rwlock_init( XPTR( local_cxy , &vmm->vsl_lock ) , LOCK_VMM_VSL );
 
@@ -1482 +1480 @@
 
     // set COW flag in DATA, ANON, REMOTE vsegs for parent process VMM
-    // this includes all parnet process copies in all clusters
+    // this includes all parent process copies in all clusters
     if( parent_process_cxy == local_cxy )   // reference is local
     {
@@ -1707 +1705 @@
 
     // initialize VSL and GPT locks
-        remote_rwlock_init( XPTR( local_cxy , &vmm->vsl_lock ) , LOCK_VMM_VSL );
-    remote_rwlock_init( XPTR( local_cxy , &vmm->gpt_lock ) , LOCK_VMM_GPT );
+    remote_rwlock_init( XPTR( local_cxy , &vmm->vsl_lock ) , LOCK_VMM_VSL );
     
     // create kernel vsegs in GPT and VSL, as required by the hardware architecture