Merge git://git.infradead.org/users/eparis/audit

[firefly-linux-kernel-4.4.55.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index b867a4dab38a2a4491f54b28b7aa2b809a4dad22..5e344bbe63ec29c16845623603c58a192159b7f9 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -57,6 +57,7 @@ struct sched_param {
 #include <linux/llist.h>
 #include <linux/uidgid.h>
 #include <linux/gfp.h>
+#include <linux/magic.h>
 
 #include <asm/processor.h>
 
@@ -167,6 +168,7 @@ extern int nr_threads;
 DECLARE_PER_CPU(unsigned long, process_counts);
 extern int nr_processes(void);
 extern unsigned long nr_running(void);
+extern bool single_task_running(void);
 extern unsigned long nr_iowait(void);
 extern unsigned long nr_iowait_cpu(int cpu);
 extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load);
@@ -645,6 +647,7 @@ struct signal_struct {
         * Live threads maintain their own counters and add to these
         * in __exit_signal, except for the group leader.
         */
+       seqlock_t stats_lock;
        cputime_t utime, stime, cutime, cstime;
        cputime_t gtime;
        cputime_t cgtime;
@@ -1023,6 +1026,7 @@ struct sched_domain_topology_level {
 extern struct sched_domain_topology_level *sched_domain_topology;
 
 extern void set_sched_topology(struct sched_domain_topology_level *tl);
+extern void wake_up_if_idle(int cpu);
 
 #ifdef CONFIG_SCHED_DEBUG
 # define SD_INIT_NAME(type)            .name = #type
@@ -1212,6 +1216,13 @@ struct sched_dl_entity {
        struct hrtimer dl_timer;
 };
 
+union rcu_special {
+       struct {
+               bool blocked;
+               bool need_qs;
+       } b;
+       short s;
+};
 struct rcu_node;
 
 enum perf_event_task_context {
@@ -1264,12 +1275,18 @@ struct task_struct {
 
 #ifdef CONFIG_PREEMPT_RCU
        int rcu_read_lock_nesting;
-       char rcu_read_unlock_special;
+       union rcu_special rcu_read_unlock_special;
        struct list_head rcu_node_entry;
 #endif /* #ifdef CONFIG_PREEMPT_RCU */
 #ifdef CONFIG_TREE_PREEMPT_RCU
        struct rcu_node *rcu_blocked_node;
 #endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */
+#ifdef CONFIG_TASKS_RCU
+       unsigned long rcu_tasks_nvcsw;
+       bool rcu_tasks_holdout;
+       struct list_head rcu_tasks_holdout_list;
+       int rcu_tasks_idle_cpu;
+#endif /* #ifdef CONFIG_TASKS_RCU */
 
 #if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)
        struct sched_info sched_info;
@@ -1934,11 +1951,13 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut,
 #define tsk_used_math(p) ((p)->flags & PF_USED_MATH)
 #define used_math() tsk_used_math(current)
 
-/* __GFP_IO isn't allowed if PF_MEMALLOC_NOIO is set in current->flags */
+/* __GFP_IO isn't allowed if PF_MEMALLOC_NOIO is set in current->flags
+ * __GFP_FS is also cleared as it implies __GFP_IO.
+ */
 static inline gfp_t memalloc_noio_flags(gfp_t flags)
 {
        if (unlikely(current->flags & PF_MEMALLOC_NOIO))
-               flags &= ~__GFP_IO;
+               flags &= ~(__GFP_IO | __GFP_FS);
        return flags;
 }
 
@@ -2011,29 +2030,21 @@ extern void task_clear_jobctl_trapping(struct task_struct *task);
 extern void task_clear_jobctl_pending(struct task_struct *task,
                                      unsigned int mask);
 
-#ifdef CONFIG_PREEMPT_RCU
-
-#define RCU_READ_UNLOCK_BLOCKED (1 << 0) /* blocked while in RCU read-side. */
-#define RCU_READ_UNLOCK_NEED_QS (1 << 1) /* RCU core needs CPU response. */
-
 static inline void rcu_copy_process(struct task_struct *p)
 {
+#ifdef CONFIG_PREEMPT_RCU
        p->rcu_read_lock_nesting = 0;
-       p->rcu_read_unlock_special = 0;
-#ifdef CONFIG_TREE_PREEMPT_RCU
+       p->rcu_read_unlock_special.s = 0;
        p->rcu_blocked_node = NULL;
-#endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */
        INIT_LIST_HEAD(&p->rcu_node_entry);
+#endif /* #ifdef CONFIG_PREEMPT_RCU */
+#ifdef CONFIG_TASKS_RCU
+       p->rcu_tasks_holdout = false;
+       INIT_LIST_HEAD(&p->rcu_tasks_holdout_list);
+       p->rcu_tasks_idle_cpu = -1;
+#endif /* #ifdef CONFIG_TASKS_RCU */
 }
 
-#else
-
-static inline void rcu_copy_process(struct task_struct *p)
-{
-}
-
-#endif
-
 static inline void tsk_restore_flags(struct task_struct *task,
                                unsigned long orig_flags, unsigned long flags)
 {
@@ -2639,6 +2650,8 @@ static inline unsigned long *end_of_stack(struct task_struct *p)
 }
 
 #endif
+#define task_stack_end_corrupted(task) \
+               (*(end_of_stack(task)) != STACK_END_MAGIC)
 
 static inline int object_is_on_stack(void *obj)
 {
@@ -2661,6 +2674,7 @@ static inline unsigned long stack_not_used(struct task_struct *p)
        return (unsigned long)n - (unsigned long)end_of_stack(p);
 }
 #endif
+extern void set_task_stack_end_magic(struct task_struct *tsk);
 
 /* set thread flags in other task's structures
  * - see asm/thread_info.h for TIF_xxxx flags available