Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer updates from Thomas Gleixner:
 "The timer departement delivers:

   - more year 2038 rework

   - a massive rework of the arm achitected timer

   - preparatory patches to allow NTP correction of clock event devices
     to avoid early expiry

   - the usual pile of fixes and enhancements all over the place"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (91 commits)
  timer/sysclt: Restrict timer migration sysctl values to 0 and 1
  arm64/arch_timer: Mark errata handlers as __maybe_unused
  Clocksource/mips-gic: Remove redundant non devicetree init
  MIPS/Malta: Probe gic-timer via devicetree
  clocksource: Use GENMASK_ULL in definition of CLOCKSOURCE_MASK
  acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver
  clocksource: arm_arch_timer: add GTDT support for memory-mapped timer
  acpi/arm64: Add memory-mapped timer support in GTDT driver
  clocksource: arm_arch_timer: simplify ACPI support code.
  acpi/arm64: Add GTDT table parse driver
  clocksource: arm_arch_timer: split MMIO timer probing.
  clocksource: arm_arch_timer: add structs to describe MMIO timer
  clocksource: arm_arch_timer: move arch_timer_needs_of_probing into DT init call
  clocksource: arm_arch_timer: refactor arch_timer_needs_probing
  clocksource: arm_arch_timer: split dt-only rate handling
  x86/uv/time: Set ->min_delta_ticks and ->max_delta_ticks
  unicore32/time: Set ->min_delta_ticks and ->max_delta_ticks
  um/time: Set ->min_delta_ticks and ->max_delta_ticks
  tile/time: Set ->min_delta_ticks and ->max_delta_ticks
  score/time: Set ->min_delta_ticks and ->max_delta_ticks
  ...

include/linux/acpi.h

@@ -591,6 +591,13 @@ enum acpi_reconfig_event  {
 int acpi_reconfig_notifier_register(struct notifier_block *nb);
 int acpi_reconfig_notifier_unregister(struct notifier_block *nb);
 
+#ifdef CONFIG_ACPI_GTDT
+int acpi_gtdt_init(struct acpi_table_header *table, int *platform_timer_count);
+int acpi_gtdt_map_ppi(int type);
+bool acpi_gtdt_c3stop(int type);
+int acpi_arch_timer_mem_init(struct arch_timer_mem *timer_mem, int *timer_count);
+#endif
+
 #else	/* !CONFIG_ACPI */
 
 #define acpi_disabled 1

include/linux/clockchips.h

@@ -182,7 +182,6 @@ extern u64 clockevent_delta2ns(unsigned long latch, struct clock_event_device *e
 extern void clockevents_register_device(struct clock_event_device *dev);
 extern int clockevents_unbind_device(struct clock_event_device *ced, int cpu);
 
-extern void clockevents_config(struct clock_event_device *dev, u32 freq);
 extern void clockevents_config_and_register(struct clock_event_device *dev,
 					    u32 freq, unsigned long min_delta,
 					    unsigned long max_delta);

include/linux/clocksource.h

@@ -120,7 +120,7 @@ struct clocksource {
 #define CLOCK_SOURCE_RESELECT			0x100
 
 /* simplify initialization of mask field */
-#define CLOCKSOURCE_MASK(bits) (u64)((bits) < 64 ? ((1ULL<<(bits))-1) : -1)
+#define CLOCKSOURCE_MASK(bits) GENMASK_ULL((bits) - 1, 0)
 
 static inline u32 clocksource_freq2mult(u32 freq, u32 shift_constant, u64 from)
 {

include/linux/hrtimer.h

@@ -276,8 +276,6 @@ static inline int hrtimer_is_hres_active(struct hrtimer *timer)
 	return timer->base->cpu_base->hres_active;
 }
 
-extern void hrtimer_peek_ahead_timers(void);
-
 /*
  * The resolution of the clocks. The resolution value is returned in
  * the clock_getres() system call to give application programmers an
@@ -300,8 +298,6 @@ extern unsigned int hrtimer_resolution;
 
 #define hrtimer_resolution	(unsigned int)LOW_RES_NSEC
 
-static inline void hrtimer_peek_ahead_timers(void) { }
-
 static inline int hrtimer_is_hres_active(struct hrtimer *timer)
 {
 	return 0;
@@ -456,7 +452,7 @@ static inline u64 hrtimer_forward_now(struct hrtimer *timer,
 }
 
 /* Precise sleep: */
-extern long hrtimer_nanosleep(struct timespec *rqtp,
+extern long hrtimer_nanosleep(struct timespec64 *rqtp,
 			      struct timespec __user *rmtp,
 			      const enum hrtimer_mode mode,
 			      const clockid_t clockid);

include/linux/irqchip/mips-gic.h

@@ -258,7 +258,6 @@ extern unsigned int gic_present;
 extern void gic_init(unsigned long gic_base_addr,
 	unsigned long gic_addrspace_size, unsigned int cpu_vec,
 	unsigned int irqbase);
-extern void gic_clocksource_init(unsigned int);
 extern u64 gic_read_count(void);
 extern unsigned int gic_get_count_width(void);
 extern u64 gic_read_compare(void);

include/linux/posix-clock.h

@@ -59,23 +59,23 @@ struct posix_clock_operations {
 
 	int  (*clock_adjtime)(struct posix_clock *pc, struct timex *tx);
 
-	int  (*clock_gettime)(struct posix_clock *pc, struct timespec *ts);
+	int  (*clock_gettime)(struct posix_clock *pc, struct timespec64 *ts);
 
-	int  (*clock_getres) (struct posix_clock *pc, struct timespec *ts);
+	int  (*clock_getres) (struct posix_clock *pc, struct timespec64 *ts);
 
 	int  (*clock_settime)(struct posix_clock *pc,
-			      const struct timespec *ts);
+			      const struct timespec64 *ts);
 
 	int  (*timer_create) (struct posix_clock *pc, struct k_itimer *kit);
 
 	int  (*timer_delete) (struct posix_clock *pc, struct k_itimer *kit);
 
 	void (*timer_gettime)(struct posix_clock *pc,
-			      struct k_itimer *kit, struct itimerspec *tsp);
+			      struct k_itimer *kit, struct itimerspec64 *tsp);
 
 	int  (*timer_settime)(struct posix_clock *pc,
 			      struct k_itimer *kit, int flags,
-			      struct itimerspec *tsp, struct itimerspec *old);
+			      struct itimerspec64 *tsp, struct itimerspec64 *old);
 	/*
 	 * Optional character device methods:
 	 */

include/linux/posix-timers.h

@@ -87,22 +87,22 @@ struct k_itimer {
 };
 
 struct k_clock {
-	int (*clock_getres) (const clockid_t which_clock, struct timespec *tp);
+	int (*clock_getres) (const clockid_t which_clock, struct timespec64 *tp);
 	int (*clock_set) (const clockid_t which_clock,
-			  const struct timespec *tp);
-	int (*clock_get) (const clockid_t which_clock, struct timespec * tp);
+			  const struct timespec64 *tp);
+	int (*clock_get) (const clockid_t which_clock, struct timespec64 *tp);
 	int (*clock_adj) (const clockid_t which_clock, struct timex *tx);
 	int (*timer_create) (struct k_itimer *timer);
 	int (*nsleep) (const clockid_t which_clock, int flags,
-		       struct timespec *, struct timespec __user *);
+		       struct timespec64 *, struct timespec __user *);
 	long (*nsleep_restart) (struct restart_block *restart_block);
-	int (*timer_set) (struct k_itimer * timr, int flags,
-			  struct itimerspec * new_setting,
-			  struct itimerspec * old_setting);
-	int (*timer_del) (struct k_itimer * timr);
+	int (*timer_set) (struct k_itimer *timr, int flags,
+			  struct itimerspec64 *new_setting,
+			  struct itimerspec64 *old_setting);
+	int (*timer_del) (struct k_itimer *timr);
 #define TIMER_RETRY 1
-	void (*timer_get) (struct k_itimer * timr,
-			   struct itimerspec * cur_setting);
+	void (*timer_get) (struct k_itimer *timr,
+			   struct itimerspec64 *cur_setting);
 };
 
 extern struct k_clock clock_posix_cpu;

include/linux/timekeeping.h

@@ -19,21 +19,6 @@ extern void do_gettimeofday(struct timeval *tv);
 extern int do_settimeofday64(const struct timespec64 *ts);
 extern int do_sys_settimeofday64(const struct timespec64 *tv,
 				 const struct timezone *tz);
-static inline int do_sys_settimeofday(const struct timespec *tv,
-				      const struct timezone *tz)
-{
-	struct timespec64 ts64;
-
-	if (!tv)
-		return do_sys_settimeofday64(NULL, tz);
-
-	if (!timespec_valid(tv))
-		return -EINVAL;
-
-	ts64 = timespec_to_timespec64(*tv);
-	return do_sys_settimeofday64(&ts64, tz);
-}
-
 /*
  * Kernel time accessors
  */
@@ -273,6 +258,11 @@ static inline void timekeeping_clocktai(struct timespec *ts)
 	*ts = ktime_to_timespec(ktime_get_clocktai());
 }
 
+static inline void timekeeping_clocktai64(struct timespec64 *ts)
+{
+	*ts = ktime_to_timespec64(ktime_get_clocktai());
+}
+
 /*
  * RTC specific
  */