These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / include / linux / tick.h

diff --git a/kernel/include/linux/tick.h b/kernel/include/linux/tick.h
index f8492da..e312219 100644 (file)
--- a/kernel/include/linux/tick.h
+++ b/kernel/include/linux/tick.h
@@ -13,8 +13,6 @@
 
 #ifdef CONFIG_GENERIC_CLOCKEVENTS
 extern void __init tick_init(void);
-extern void tick_freeze(void);
-extern void tick_unfreeze(void);
 /* Should be core only, but ARM BL switcher requires it */
 extern void tick_suspend_local(void);
 /* Should be core only, but XEN resume magic and ARM BL switcher require it */
@@ -23,14 +21,20 @@ extern void tick_handover_do_timer(void);
 extern void tick_cleanup_dead_cpu(int cpu);
 #else /* CONFIG_GENERIC_CLOCKEVENTS */
 static inline void tick_init(void) { }
-static inline void tick_freeze(void) { }
-static inline void tick_unfreeze(void) { }
 static inline void tick_suspend_local(void) { }
 static inline void tick_resume_local(void) { }
 static inline void tick_handover_do_timer(void) { }
 static inline void tick_cleanup_dead_cpu(int cpu) { }
 #endif /* !CONFIG_GENERIC_CLOCKEVENTS */
 
+#if defined(CONFIG_GENERIC_CLOCKEVENTS) && defined(CONFIG_SUSPEND)
+extern void tick_freeze(void);
+extern void tick_unfreeze(void);
+#else
+static inline void tick_freeze(void) { }
+static inline void tick_unfreeze(void) { }
+#endif
+
 #ifdef CONFIG_TICK_ONESHOT
 extern void tick_irq_enter(void);
 #  ifndef arch_needs_cpu
@@ -63,10 +67,13 @@ extern void tick_broadcast_control(enum tick_broadcast_mode mode);
 static inline void tick_broadcast_control(enum tick_broadcast_mode mode) { }
 #endif /* BROADCAST */
 
-#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT)
+#ifdef CONFIG_GENERIC_CLOCKEVENTS
 extern int tick_broadcast_oneshot_control(enum tick_broadcast_state state);
 #else
-static inline int tick_broadcast_oneshot_control(enum tick_broadcast_state state) { return 0; }
+static inline int tick_broadcast_oneshot_control(enum tick_broadcast_state state)
+{
+       return 0;
+}
 #endif
 
 static inline void tick_broadcast_enable(void)
@@ -134,21 +141,44 @@ static inline bool tick_nohz_full_cpu(int cpu)
        return cpumask_test_cpu(cpu, tick_nohz_full_mask);
 }
 
-extern void __tick_nohz_full_check(void);
+static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask)
+{
+       if (tick_nohz_full_enabled())
+               cpumask_or(mask, mask, tick_nohz_full_mask);
+}
+
+static inline int housekeeping_any_cpu(void)
+{
+       return cpumask_any_and(housekeeping_mask, cpu_online_mask);
+}
+
 extern void tick_nohz_full_kick(void);
 extern void tick_nohz_full_kick_cpu(int cpu);
 extern void tick_nohz_full_kick_all(void);
-extern void __tick_nohz_task_switch(struct task_struct *tsk);
+extern void __tick_nohz_task_switch(void);
 #else
+static inline int housekeeping_any_cpu(void)
+{
+       return smp_processor_id();
+}
 static inline bool tick_nohz_full_enabled(void) { return false; }
 static inline bool tick_nohz_full_cpu(int cpu) { return false; }
-static inline void __tick_nohz_full_check(void) { }
+static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) { }
 static inline void tick_nohz_full_kick_cpu(int cpu) { }
 static inline void tick_nohz_full_kick(void) { }
 static inline void tick_nohz_full_kick_all(void) { }
-static inline void __tick_nohz_task_switch(struct task_struct *tsk) { }
+static inline void __tick_nohz_task_switch(void) { }
 #endif
 
+static inline const struct cpumask *housekeeping_cpumask(void)
+{
+#ifdef CONFIG_NO_HZ_FULL
+       if (tick_nohz_full_enabled())
+               return housekeeping_mask;
+#endif
+       return cpu_possible_mask;
+}
+
 static inline bool is_housekeeping_cpu(int cpu)
 {
 #ifdef CONFIG_NO_HZ_FULL
@@ -167,16 +197,10 @@ static inline void housekeeping_affine(struct task_struct *t)
 #endif
 }
 
-static inline void tick_nohz_full_check(void)
-{
-       if (tick_nohz_full_enabled())
-               __tick_nohz_full_check();
-}
-
-static inline void tick_nohz_task_switch(struct task_struct *tsk)
+static inline void tick_nohz_task_switch(void)
 {
        if (tick_nohz_full_enabled())
-               __tick_nohz_task_switch(tsk);
+               __tick_nohz_task_switch();
 }
 
 #endif