cpuset: PF_SPREAD_PAGE and PF_SPREAD_SLAB should be atomic flags

[pandora-kernel.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 7c19d55..7b1cafe 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -33,6 +33,7 @@ struct sched_param {
 
 #include <linux/smp.h>
 #include <linux/sem.h>
+#include <linux/shm.h>
 #include <linux/signal.h>
 #include <linux/compiler.h>
 #include <linux/completion.h>
@@ -168,8 +169,7 @@ extern int nr_processes(void);
 extern unsigned long nr_running(void);
 extern unsigned long nr_iowait(void);
 extern unsigned long nr_iowait_cpu(int cpu);
-extern unsigned long this_cpu_load(void);
-
+extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load);
 
 extern void calc_global_load(unsigned long ticks);
 extern void update_cpu_load_nohz(void);
@@ -1385,6 +1385,7 @@ struct task_struct {
 #ifdef CONFIG_SYSVIPC
 /* ipc stuff */
        struct sysv_sem sysvsem;
+       struct sysv_shm sysvshm;
 #endif
 #ifdef CONFIG_DETECT_HUNG_TASK
 /* hung task detection */
@@ -1628,12 +1629,6 @@ struct task_struct {
        unsigned long trace_recursion;
 #endif /* CONFIG_TRACING */
 #ifdef CONFIG_MEMCG /* memcg uses this to do batch job */
-       struct memcg_batch_info {
-               int do_batch;   /* incremented when batch uncharge started */
-               struct mem_cgroup *memcg; /* target memcg of uncharge */
-               unsigned long nr_pages; /* uncharged usage */
-               unsigned long memsw_nr_pages; /* uncharged mem+swap usage */
-       } memcg_batch;
        unsigned int memcg_kmem_skip_account;
        struct memcg_oom_info {
                struct mem_cgroup *memcg;
@@ -1908,8 +1903,6 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut,
 #define PF_KTHREAD     0x00200000      /* I am a kernel thread */
 #define PF_RANDOMIZE   0x00400000      /* randomize virtual address space */
 #define PF_SWAPWRITE   0x00800000      /* Allowed to write to swap */
-#define PF_SPREAD_PAGE 0x01000000      /* Spread page cache over cpuset */
-#define PF_SPREAD_SLAB 0x02000000      /* Spread some slab caches over cpuset */
 #define PF_NO_SETAFFINITY 0x04000000   /* Userland is not allowed to meddle with cpus_allowed */
 #define PF_MCE_EARLY    0x08000000      /* Early kill for mce process policy */
 #define PF_MUTEX_TESTER        0x20000000      /* Thread belongs to the rt mutex tester */
@@ -1962,17 +1955,31 @@ static inline void memalloc_noio_restore(unsigned int flags)
 }
 
 /* Per-process atomic flags. */
-#define PFA_NO_NEW_PRIVS 0x00000001    /* May not gain new privileges. */
+#define PFA_NO_NEW_PRIVS 0     /* May not gain new privileges. */
+#define PFA_SPREAD_PAGE  1      /* Spread page cache over cpuset */
+#define PFA_SPREAD_SLAB  2      /* Spread some slab caches over cpuset */
 
-static inline bool task_no_new_privs(struct task_struct *p)
-{
-       return test_bit(PFA_NO_NEW_PRIVS, &p->atomic_flags);
-}
 
-static inline void task_set_no_new_privs(struct task_struct *p)
-{
-       set_bit(PFA_NO_NEW_PRIVS, &p->atomic_flags);
-}
+#define TASK_PFA_TEST(name, func)                                      \
+       static inline bool task_##func(struct task_struct *p)           \
+       { return test_bit(PFA_##name, &p->atomic_flags); }
+#define TASK_PFA_SET(name, func)                                       \
+       static inline void task_set_##func(struct task_struct *p)       \
+       { set_bit(PFA_##name, &p->atomic_flags); }
+#define TASK_PFA_CLEAR(name, func)                                     \
+       static inline void task_clear_##func(struct task_struct *p)     \
+       { clear_bit(PFA_##name, &p->atomic_flags); }
+
+TASK_PFA_TEST(NO_NEW_PRIVS, no_new_privs)
+TASK_PFA_SET(NO_NEW_PRIVS, no_new_privs)
+
+TASK_PFA_TEST(SPREAD_PAGE, spread_page)
+TASK_PFA_SET(SPREAD_PAGE, spread_page)
+TASK_PFA_CLEAR(SPREAD_PAGE, spread_page)
+
+TASK_PFA_TEST(SPREAD_SLAB, spread_slab)
+TASK_PFA_SET(SPREAD_SLAB, spread_slab)
+TASK_PFA_CLEAR(SPREAD_SLAB, spread_slab)
 
 /*
  * task->jobctl flags
@@ -2364,8 +2371,10 @@ static inline int on_sig_stack(unsigned long sp)
 
 static inline int sas_ss_flags(unsigned long sp)
 {
-       return (current->sas_ss_size == 0 ? SS_DISABLE
-               : on_sig_stack(sp) ? SS_ONSTACK : 0);
+       if (!current->sas_ss_size)
+               return SS_DISABLE;
+
+       return on_sig_stack(sp) ? SS_ONSTACK : 0;
 }
 
 static inline unsigned long sigsp(unsigned long sp, struct ksignal *ksig)
@@ -2967,15 +2976,10 @@ static inline void inc_syscw(struct task_struct *tsk)
 
 #ifdef CONFIG_MEMCG
 extern void mm_update_next_owner(struct mm_struct *mm);
-extern void mm_init_owner(struct mm_struct *mm, struct task_struct *p);
 #else
 static inline void mm_update_next_owner(struct mm_struct *mm)
 {
 }
-
-static inline void mm_init_owner(struct mm_struct *mm, struct task_struct *p)
-{
-}
 #endif /* CONFIG_MEMCG */
 
 static inline unsigned long task_rlimit(const struct task_struct *tsk,