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From: John Baldwin <jhb@FreeBSD.org>
Date: Tue, 8 Mar 2011 14:18:21 +0000 (UTC)
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Subject: svn commit: r219399 - head/sys/kern
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Author: jhb
Date: Tue Mar  8 14:18:21 2011
New Revision: 219399
URL: http://svn.freebsd.org/changeset/base/219399

Log:
  When constructing a new cpuset, apply the parent cpuset's mask to the new
  set's mask rather than the root mask.  This was causing the root mask to
  be modified incorrectly.
  
  Reviewed by:	jeff
  MFC after:	1 week

Modified:
  head/sys/kern/kern_cpuset.c

Modified: head/sys/kern/kern_cpuset.c
==============================================================================
--- head/sys/kern/kern_cpuset.c	Tue Mar  8 12:08:23 2011	(r219398)
+++ head/sys/kern/kern_cpuset.c	Tue Mar  8 14:18:21 2011	(r219399)
@@ -249,7 +249,7 @@ cpuset_lookup(cpusetid_t setid, struct t
  * will have no valid cpu based on restrictions from the parent.
  */
 static int
-_cpuset_create(struct cpuset *set, struct cpuset *parent, cpuset_t *mask,
+_cpuset_create(struct cpuset *set, struct cpuset *parent, const cpuset_t *mask,
     cpusetid_t id)
 {
 
@@ -260,7 +260,7 @@ _cpuset_create(struct cpuset *set, struc
 	refcount_init(&set->cs_ref, 1);
 	set->cs_flags = 0;
 	mtx_lock_spin(&cpuset_lock);
-	CPU_AND(mask, &parent->cs_mask);
+	CPU_AND(&set->cs_mask, &parent->cs_mask);
 	set->cs_id = id;
 	set->cs_parent = cpuset_ref(parent);
 	LIST_INSERT_HEAD(&parent->cs_children, set, cs_siblings);
@@ -277,7 +277,7 @@ _cpuset_create(struct cpuset *set, struc
  * allocated.
  */
 static int
-cpuset_create(struct cpuset **setp, struct cpuset *parent, cpuset_t *mask)
+cpuset_create(struct cpuset **setp, struct cpuset *parent, const cpuset_t *mask)
 {
 	struct cpuset *set;
 	cpusetid_t id;
@@ -475,7 +475,7 @@ cpuset_which(cpuwhich_t which, id_t id, 
  * the new set is a child of 'set'.
  */
 static int
-cpuset_shadow(struct cpuset *set, struct cpuset *fset, cpuset_t *mask)
+cpuset_shadow(struct cpuset *set, struct cpuset *fset, const cpuset_t *mask)
 {
 	struct cpuset *parent;