exit_thread: accept a task parameter to be exited

[cascardo/linux.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6cc0df9..02bdab4 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -521,6 +521,7 @@ static inline int get_dumpable(struct mm_struct *mm)
 
 #define MMF_HAS_UPROBES                19      /* has uprobes */
 #define MMF_RECALC_UPROBES     20      /* MMF_HAS_UPROBES can be wrong */
+#define MMF_OOM_REAPED         21      /* mm has been already reaped */
 
 #define MMF_INIT_MASK          (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK)
 
@@ -668,6 +669,7 @@ struct signal_struct {
        atomic_t                sigcnt;
        atomic_t                live;
        int                     nr_threads;
+       atomic_t oom_victims; /* # of TIF_MEDIE threads in this thread group */
        struct list_head        thread_head;
 
        wait_queue_head_t       wait_chldexit;  /* for wait4() */
@@ -2721,14 +2723,24 @@ extern struct mm_struct * mm_alloc(void);
 
 /* mmdrop drops the mm and the page tables */
 extern void __mmdrop(struct mm_struct *);
-static inline void mmdrop(struct mm_struct * mm)
+static inline void mmdrop(struct mm_struct *mm)
 {
        if (unlikely(atomic_dec_and_test(&mm->mm_count)))
                __mmdrop(mm);
 }
 
+static inline bool mmget_not_zero(struct mm_struct *mm)
+{
+       return atomic_inc_not_zero(&mm->mm_users);
+}
+
 /* mmput gets rid of the mappings and all user-space */
 extern void mmput(struct mm_struct *);
+/* same as above but performs the slow path from the async kontext. Can
+ * be called from the atomic context as well
+ */
+extern void mmput_async(struct mm_struct *);
+
 /* Grab a reference to a task's mm, if it is not already going away */
 extern struct mm_struct *get_task_mm(struct task_struct *task);
 /*
@@ -2757,7 +2769,14 @@ static inline int copy_thread_tls(
 }
 #endif
 extern void flush_thread(void);
-extern void exit_thread(void);
+
+#ifdef CONFIG_HAVE_EXIT_THREAD
+extern void exit_thread(struct task_struct *tsk);
+#else
+static inline void exit_thread(struct task_struct *tsk)
+{
+}
+#endif
 
 extern void exit_files(struct task_struct *);
 extern void __cleanup_sighand(struct sighand_struct *);
@@ -3351,7 +3370,10 @@ struct update_util_data {
                     u64 time, unsigned long util, unsigned long max);
 };
 
-void cpufreq_set_update_util_data(int cpu, struct update_util_data *data);
+void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data,
+                       void (*func)(struct update_util_data *data, u64 time,
+                                    unsigned long util, unsigned long max));
+void cpufreq_remove_update_util_hook(int cpu);
 #endif /* CONFIG_CPU_FREQ */
 
 #endif