Merge tag 'timers-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer core updates from Thomas Gleixner:

 - Inline timecounter_cyc2time() as that is now used in the networking
   hotpath. Inlining it significantly improves performance.

 - Optimize the tick dependency check in case that the tracepoint is
   disabled, which improves the hotpath performance in the tick
   management code, which is a hotpath on transitions in and out of
   idle.

 - The usual cleanups and improvements

* tag 'timers-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  time/kunit: Document handling of negative years of is_leap()
  tick/nohz: Optimize check_tick_dependency() with early return
  time/sched_clock: Use ACCESS_PRIVATE() to evaluate hrtimer::function
  hrtimer: Drop _tv64() helpers
  hrtimer: Remove public definition of HIGH_RES_NSEC
  hrtimer: Remove unused resolution constants
  time/timecounter: Inline timecounter_cyc2time()

1 files changed, 11 insertions, 3 deletions

diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index 59d22f1bd0a8..860af7a58428 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -50,6 +50,14 @@
 #include "tick-internal.h"
 
 /*
+ * The resolution of the clocks. The resolution value is returned in
+ * the clock_getres() system call to give application programmers an
+ * idea of the (in)accuracy of timers. Timer values are rounded up to
+ * this resolution values.
+ */
+#define HIGH_RES_NSEC		1
+
+/*
  * Masks for selecting the soft and hard context timers from
  * cpu_base->active
  */
@@ -806,7 +814,7 @@ static void hrtimer_reprogram(struct hrtimer *timer, bool reprogram)
 	struct hrtimer_clock_base *base = timer->base;
 	ktime_t expires = ktime_sub(hrtimer_get_expires(timer), base->offset);
 
-	WARN_ON_ONCE(hrtimer_get_expires_tv64(timer) < 0);
+	WARN_ON_ONCE(hrtimer_get_expires(timer) < 0);
 
 	/*
 	 * CLOCK_REALTIME timer might be requested with an absolute
@@ -1053,7 +1061,7 @@ u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval)
 
 		orun = ktime_divns(delta, incr);
 		hrtimer_add_expires_ns(timer, incr * orun);
-		if (hrtimer_get_expires_tv64(timer) > now)
+		if (hrtimer_get_expires(timer) > now)
 			return orun;
 		/*
 		 * This (and the ktime_add() below) is the
@@ -1835,7 +1843,7 @@ static void __hrtimer_run_queues(struct hrtimer_cpu_base *cpu_base, ktime_t now,
 			 * are right-of a not yet expired timer, because that
 			 * timer will have to trigger a wakeup anyway.
 			 */
-			if (basenow < hrtimer_get_softexpires_tv64(timer))
+			if (basenow < hrtimer_get_softexpires(timer))
 				break;
 
 			__run_hrtimer(cpu_base, base, timer, &basenow, flags);