Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 69 insertions, 121 deletions

diff --git a/include/linux/tick.h b/include/linux/tick.h
index 9c085dc12ae9..f8492da57ad3 100644
--- a/include/linux/tick.h
+++ b/include/linux/tick.h
@@ -1,7 +1,5 @@
-/*  linux/include/linux/tick.h
- *
- *  This file contains the structure definitions for tick related functions
- *
+/*
+ * Tick related global functions
  */
 #ifndef _LINUX_TICK_H
 #define _LINUX_TICK_H
@@ -9,149 +7,99 @@
 #include <linux/clockchips.h>
 #include <linux/irqflags.h>
 #include <linux/percpu.h>
-#include <linux/hrtimer.h>
 #include <linux/context_tracking_state.h>
 #include <linux/cpumask.h>
 #include <linux/sched.h>
 
 #ifdef CONFIG_GENERIC_CLOCKEVENTS
-
-enum tick_device_mode {
-	TICKDEV_MODE_PERIODIC,
-	TICKDEV_MODE_ONESHOT,
-};
-
-struct tick_device {
-	struct clock_event_device *evtdev;
-	enum tick_device_mode mode;
-};
-
-enum tick_nohz_mode {
-	NOHZ_MODE_INACTIVE,
-	NOHZ_MODE_LOWRES,
-	NOHZ_MODE_HIGHRES,
-};
-
-/**
- * struct tick_sched - sched tick emulation and no idle tick control/stats
- * @sched_timer:	hrtimer to schedule the periodic tick in high
- *			resolution mode
- * @last_tick:		Store the last tick expiry time when the tick
- *			timer is modified for nohz sleeps. This is necessary
- *			to resume the tick timer operation in the timeline
- *			when the CPU returns from nohz sleep.
- * @tick_stopped:	Indicator that the idle tick has been stopped
- * @idle_jiffies:	jiffies at the entry to idle for idle time accounting
- * @idle_calls:		Total number of idle calls
- * @idle_sleeps:	Number of idle calls, where the sched tick was stopped
- * @idle_entrytime:	Time when the idle call was entered
- * @idle_waketime:	Time when the idle was interrupted
- * @idle_exittime:	Time when the idle state was left
- * @idle_sleeptime:	Sum of the time slept in idle with sched tick stopped
- * @iowait_sleeptime:	Sum of the time slept in idle with sched tick stopped, with IO outstanding
- * @sleep_length:	Duration of the current idle sleep
- * @do_timer_lst:	CPU was the last one doing do_timer before going idle
- */
-struct tick_sched {
-	struct hrtimer			sched_timer;
-	unsigned long			check_clocks;
-	enum tick_nohz_mode		nohz_mode;
-	ktime_t				last_tick;
-	int				inidle;
-	int				tick_stopped;
-	unsigned long			idle_jiffies;
-	unsigned long			idle_calls;
-	unsigned long			idle_sleeps;
-	int				idle_active;
-	ktime_t				idle_entrytime;
-	ktime_t				idle_waketime;
-	ktime_t				idle_exittime;
-	ktime_t				idle_sleeptime;
-	ktime_t				iowait_sleeptime;
-	ktime_t				sleep_length;
-	unsigned long			last_jiffies;
-	unsigned long			next_jiffies;
-	ktime_t				idle_expires;
-	int				do_timer_last;
-};
-
 extern void __init tick_init(void);
-extern int tick_is_oneshot_available(void);
-extern struct tick_device *tick_get_device(int cpu);
-
 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 */
+extern void tick_resume_local(void);
+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 */
 
-# ifdef CONFIG_HIGH_RES_TIMERS
-extern int tick_init_highres(void);
-extern int tick_program_event(ktime_t expires, int force);
-extern void tick_setup_sched_timer(void);
-# endif
-
-# if defined CONFIG_NO_HZ_COMMON || defined CONFIG_HIGH_RES_TIMERS
-extern void tick_cancel_sched_timer(int cpu);
-# else
-static inline void tick_cancel_sched_timer(int cpu) { }
-# endif
-
-# ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
-extern struct tick_device *tick_get_broadcast_device(void);
-extern struct cpumask *tick_get_broadcast_mask(void);
-
-#  ifdef CONFIG_TICK_ONESHOT
-extern struct cpumask *tick_get_broadcast_oneshot_mask(void);
-#  endif
-
-# endif /* BROADCAST */
-
-# ifdef CONFIG_TICK_ONESHOT
-extern void tick_clock_notify(void);
-extern int tick_check_oneshot_change(int allow_nohz);
-extern struct tick_sched *tick_get_tick_sched(int cpu);
+#ifdef CONFIG_TICK_ONESHOT
 extern void tick_irq_enter(void);
-extern int tick_oneshot_mode_active(void);
 #  ifndef arch_needs_cpu
 #   define arch_needs_cpu() (0)
 #  endif
 # else
-static inline void tick_clock_notify(void) { }
-static inline int tick_check_oneshot_change(int allow_nohz) { return 0; }
 static inline void tick_irq_enter(void) { }
-static inline int tick_oneshot_mode_active(void) { return 0; }
-# endif
+#endif
 
-#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_cancel_sched_timer(int cpu) { }
-static inline void tick_clock_notify(void) { }
-static inline int tick_check_oneshot_change(int allow_nohz) { return 0; }
-static inline void tick_irq_enter(void) { }
-static inline int tick_oneshot_mode_active(void) { return 0; }
-#endif /* !CONFIG_GENERIC_CLOCKEVENTS */
+#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT)
+extern void hotplug_cpu__broadcast_tick_pull(int dead_cpu);
+#else
+static inline void hotplug_cpu__broadcast_tick_pull(int dead_cpu) { }
+#endif
 
-# ifdef CONFIG_NO_HZ_COMMON
-DECLARE_PER_CPU(struct tick_sched, tick_cpu_sched);
+enum tick_broadcast_mode {
+	TICK_BROADCAST_OFF,
+	TICK_BROADCAST_ON,
+	TICK_BROADCAST_FORCE,
+};
+
+enum tick_broadcast_state {
+	TICK_BROADCAST_EXIT,
+	TICK_BROADCAST_ENTER,
+};
+
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+extern void tick_broadcast_control(enum tick_broadcast_mode mode);
+#else
+static inline void tick_broadcast_control(enum tick_broadcast_mode mode) { }
+#endif /* BROADCAST */
+
+#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT)
+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; }
+#endif
 
-static inline int tick_nohz_tick_stopped(void)
+static inline void tick_broadcast_enable(void)
+{
+	tick_broadcast_control(TICK_BROADCAST_ON);
+}
+static inline void tick_broadcast_disable(void)
+{
+	tick_broadcast_control(TICK_BROADCAST_OFF);
+}
+static inline void tick_broadcast_force(void)
+{
+	tick_broadcast_control(TICK_BROADCAST_FORCE);
+}
+static inline int tick_broadcast_enter(void)
 {
-	return __this_cpu_read(tick_cpu_sched.tick_stopped);
+	return tick_broadcast_oneshot_control(TICK_BROADCAST_ENTER);
+}
+static inline void tick_broadcast_exit(void)
+{
+	tick_broadcast_oneshot_control(TICK_BROADCAST_EXIT);
 }
 
+#ifdef CONFIG_NO_HZ_COMMON
+extern int tick_nohz_tick_stopped(void);
 extern void tick_nohz_idle_enter(void);
 extern void tick_nohz_idle_exit(void);
 extern void tick_nohz_irq_exit(void);
 extern ktime_t tick_nohz_get_sleep_length(void);
 extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time);
 extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time);
-
-# else /* !CONFIG_NO_HZ_COMMON */
-static inline int tick_nohz_tick_stopped(void)
-{
-	return 0;
-}
-
+#else /* !CONFIG_NO_HZ_COMMON */
+static inline int tick_nohz_tick_stopped(void) { return 0; }
 static inline void tick_nohz_idle_enter(void) { }
 static inline void tick_nohz_idle_exit(void) { }
 
@@ -163,7 +111,7 @@ static inline ktime_t tick_nohz_get_sleep_length(void)
 }
 static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; }
 static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; }
-# endif /* !CONFIG_NO_HZ_COMMON */
+#endif /* !CONFIG_NO_HZ_COMMON */
 
 #ifdef CONFIG_NO_HZ_FULL
 extern bool tick_nohz_full_running;