---

yaml --- r: 151522 b: refs/heads/master c: 58568d2 h: refs/heads/master v: v3
git-mirror · Jun 17, 2009 · 01f6d70 · 01f6d70
1 parent 9e860ca
commit 01f6d70
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Showing 8 changed files with 171 additions and 192 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 950592f7b991f267d707d372b90f508bbe72acbc
+refs/heads/master: 58568d2a8215cb6f55caf2332017d7bdff954e1c
diff --git a/trunk/include/linux/cpuset.h b/trunk/include/linux/cpuset.h
@@ -18,7 +18,6 @@
 
 extern int number_of_cpusets;	/* How many cpusets are defined in system? */
 
-extern int cpuset_init_early(void);
 extern int cpuset_init(void);
 extern void cpuset_init_smp(void);
 extern void cpuset_cpus_allowed(struct task_struct *p, struct cpumask *mask);
@@ -27,7 +26,6 @@ extern void cpuset_cpus_allowed_locked(struct task_struct *p,
 extern nodemask_t cpuset_mems_allowed(struct task_struct *p);
 #define cpuset_current_mems_allowed (current->mems_allowed)
 void cpuset_init_current_mems_allowed(void);
-void cpuset_update_task_memory_state(void);
 int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask);
 
 extern int __cpuset_node_allowed_softwall(int node, gfp_t gfp_mask);
@@ -92,9 +90,13 @@ extern void rebuild_sched_domains(void);
 
 extern void cpuset_print_task_mems_allowed(struct task_struct *p);
 
+static inline void set_mems_allowed(nodemask_t nodemask)
+{
+	current->mems_allowed = nodemask;
+}
+
 #else /* !CONFIG_CPUSETS */
 
-static inline int cpuset_init_early(void) { return 0; }
 static inline int cpuset_init(void) { return 0; }
 static inline void cpuset_init_smp(void) {}
 
@@ -116,7 +118,6 @@ static inline nodemask_t cpuset_mems_allowed(struct task_struct *p)
 
 #define cpuset_current_mems_allowed (node_states[N_HIGH_MEMORY])
 static inline void cpuset_init_current_mems_allowed(void) {}
-static inline void cpuset_update_task_memory_state(void) {}
 
 static inline int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask)
 {
@@ -188,6 +189,10 @@ static inline void cpuset_print_task_mems_allowed(struct task_struct *p)
 {
 }
 
+static inline void set_mems_allowed(nodemask_t nodemask)
+{
+}
+
 #endif /* !CONFIG_CPUSETS */
 
 #endif /* _LINUX_CPUSET_H */
diff --git a/trunk/include/linux/sched.h b/trunk/include/linux/sched.h
@@ -1318,7 +1318,8 @@ struct task_struct {
 /* Thread group tracking */
    	u32 parent_exec_id;
    	u32 self_exec_id;
-/* Protection of (de-)allocation: mm, files, fs, tty, keyrings */
+/* Protection of (de-)allocation: mm, files, fs, tty, keyrings, mems_allowed,
+ * mempolicy */
 	spinlock_t alloc_lock;
 
 #ifdef CONFIG_GENERIC_HARDIRQS
@@ -1386,8 +1387,7 @@ struct task_struct {
 	cputime_t acct_timexpd;	/* stime + utime since last update */
 #endif
 #ifdef CONFIG_CPUSETS
-	nodemask_t mems_allowed;
-	int cpuset_mems_generation;
+	nodemask_t mems_allowed;	/* Protected by alloc_lock */
 	int cpuset_mem_spread_rotor;
 #endif
 #ifdef CONFIG_CGROUPS
@@ -1410,7 +1410,7 @@ struct task_struct {
 	struct list_head perf_counter_list;
 #endif
 #ifdef CONFIG_NUMA
-	struct mempolicy *mempolicy;
+	struct mempolicy *mempolicy;	/* Protected by alloc_lock */
 	short il_next;
 #endif
 	atomic_t fs_excl;	/* holding fs exclusive resources */

diff --git a/trunk/init/main.c b/trunk/init/main.c
@@ -670,7 +670,6 @@ asmlinkage void __init start_kernel(void)
 		initrd_start = 0;
 	}
 #endif
-	cpuset_init_early();
 	page_cgroup_init();
 	enable_debug_pagealloc();
 	cpu_hotplug_init();
@@ -867,6 +866,11 @@ static noinline int init_post(void)
 static int __init kernel_init(void * unused)
 {
 	lock_kernel();
+
+	/*
+	 * init can allocate pages on any node
+	 */
+	set_mems_allowed(node_possible_map);
 	/*
 	 * init can run on any cpu.
 	 */