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-rw-r--r--include/linux/cpuset.h13
-rw-r--r--include/linux/sched.h8
2 files changed, 13 insertions, 8 deletions
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index 05ea1dd7d681..a5740fc4d04b 100644
--- a/include/linux/cpuset.h
+++ b/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/include/linux/sched.h b/include/linux/sched.h
index c900aa530070..1048bf50540a 100644
--- a/include/linux/sched.h
+++ b/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 */