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Date: Mon, 29 Sep 2003 17:31:09 -0700 (PDT)
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From: Peter Wemm <peter@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 38819 for review
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http://perforce.freebsd.org/chv.cgi?CH=38819

Change 38819 by peter@peter_hammer on 2003/09/29 17:30:33

	lazy_switch is very premature here

Affected files ...

.. //depot/projects/hammer/sys/amd64/amd64/pmap.c#37 edit

Differences ...

==== //depot/projects/hammer/sys/amd64/amd64/pmap.c#37 (text+ko) ====

@@ -168,9 +168,11 @@
 LIST_HEAD(pmaplist, pmap);
 static struct pmaplist allpmaps;
 static struct mtx allpmaps_lock;
+#ifdef LAZY_SWITCH
 #ifdef SMP
 static struct mtx lazypmap_lock;
 #endif
+#endif
 
 vm_paddr_t avail_start;		/* PA of first available physical page */
 vm_paddr_t avail_end;		/* PA of last available physical page */
@@ -485,9 +487,11 @@
 	kernel_pmap->pm_active = -1;	/* don't allow deactivation */
 	TAILQ_INIT(&kernel_pmap->pm_pvlist);
 	LIST_INIT(&allpmaps);
+#ifdef LAZY_SWITCH
 #ifdef SMP
 	mtx_init(&lazypmap_lock, "lazypmap", NULL, MTX_SPIN);
 #endif
+#endif
 	mtx_init(&allpmaps_lock, "allpmaps", NULL, MTX_SPIN);
 	mtx_lock_spin(&allpmaps_lock);
 	LIST_INSERT_HEAD(&allpmaps, kernel_pmap, pm_list);
@@ -1381,6 +1385,7 @@
  * Pmap allocation/deallocation routines.
  ***************************************************/
 
+#ifdef LAZY_SWITCH
 #ifdef SMP
 /*
  * Deal with a SMP shootdown of other users of the pmap that we are
@@ -1465,6 +1470,7 @@
 	}
 }
 #endif	/* SMP */
+#endif
 
 /*
  * Release any resources held by the given physical map.
@@ -1480,7 +1486,9 @@
 	    ("pmap_release: pmap resident count %ld != 0",
 	    pmap->pm_stats.resident_count));
 
+#ifdef LAZY_SWITCH
 	pmap_lazyfix(pmap);
+#endif
 	mtx_lock_spin(&allpmaps_lock);
 	LIST_REMOVE(pmap, pm_list);
 	mtx_unlock_spin(&allpmaps_lock);