Merge tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer updates from Thomas Gleixner:
 "Core:

   - Overhaul of posix-timers in preparation of removing the workaround
     for periodic timers which have signal delivery ignored.

   - Remove the historical extra jiffie in msleep()

     msleep() adds an extra jiffie to the timeout value to ensure
     minimal sleep time. The timer wheel ensures minimal sleep time
     since the large rewrite to a non-cascading wheel, but the extra
     jiffie in msleep() remained unnoticed. Remove it.

   - Make the timer slack handling correct for realtime tasks.

     The procfs interface is inconsistent and does neither reflect
     reality nor conforms to the man page. Show the correct 0 slack for
     real time tasks and enforce it at the core level instead of having
     inconsistent individual checks in various timer setup functions.

   - The usual set of updates and enhancements all over the place.

  Drivers:

   - Allow the ACPI PM timer to be turned off during suspend

   - No new drivers

   - The usual updates and enhancements in various drivers"

* tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
  ntp: Make sure RTC is synchronized when time goes backwards
  treewide: Fix wrong singular form of jiffies in comments
  cpu: Use already existing usleep_range()
  timers: Rename next_expiry_recalc() to be unique
  platform/x86:intel/pmc: Fix comment for the pmc_core_acpi_pm_timer_suspend_resume function
  clocksource/drivers/jcore: Use request_percpu_irq()
  clocksource/drivers/cadence-ttc: Add missing clk_disable_unprepare in ttc_setup_clockevent
  clocksource/drivers/asm9260: Add missing clk_disable_unprepare in asm9260_timer_init
  clocksource/drivers/qcom: Add missing iounmap() on errors in msm_dt_timer_init()
  clocksource/drivers/ingenic: Use devm_clk_get_enabled() helpers
  platform/x86:intel/pmc: Enable the ACPI PM Timer to be turned off when suspended
  clocksource: acpi_pm: Add external callback for suspend/resume
  clocksource/drivers/arm_arch_timer: Using for_each_available_child_of_node_scoped()
  dt-bindings: timer: rockchip: Add rk3576 compatible
  timers: Annotate possible non critical data race of next_expiry
  timers: Remove historical extra jiffie for timeout in msleep()
  hrtimer: Use and report correct timerslack values for realtime tasks
  hrtimer: Annotate hrtimer_cpu_base_.*_expiry() for sparse.
  timers: Add sparse annotation for timer_sync_wait_running().
  signal: Replace BUG_ON()s
  ...

4 files changed, 5 insertions, 5 deletions

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_wait.c b/drivers/gpu/drm/i915/gem/i915_gem_wait.c
index d4b918fb11ce..1f55e62044a4 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_wait.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_wait.c
@@ -266,7 +266,7 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 		if (ret == -ETIME && !nsecs_to_jiffies(args->timeout_ns))
 			args->timeout_ns = 0;
 
-		/* Asked to wait beyond the jiffie/scheduler precision? */
+		/* Asked to wait beyond the jiffy/scheduler precision? */
 		if (ret == -ETIME && args->timeout_ns)
 			ret = -EAGAIN;
 	}
diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
index 4202df5b8c12..222ca7c44951 100644
--- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
+++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
@@ -93,7 +93,7 @@ static int wait_for_reset(struct intel_engine_cs *engine,
 		return -EINVAL;
 	}
 
-	/* Give the request a jiffie to complete after flushing the worker */
+	/* Give the request a jiffy to complete after flushing the worker */
 	if (i915_request_wait(rq, 0,
 			      max(0l, (long)(timeout - jiffies)) + 1) < 0) {
 		pr_err("%s: hanging request %llx:%lld did not complete\n",
@@ -3426,7 +3426,7 @@ static int live_preempt_timeout(void *arg)
 			cpu_relax();
 
 		saved_timeout = engine->props.preempt_timeout_ms;
-		engine->props.preempt_timeout_ms = 1; /* in ms, -> 1 jiffie */
+		engine->props.preempt_timeout_ms = 1; /* in ms, -> 1 jiffy */
 
 		i915_request_get(rq);
 		i915_request_add(rq);
diff --git a/drivers/gpu/drm/i915/i915_utils.c b/drivers/gpu/drm/i915/i915_utils.c
index 6f9e7b354b54..f2ba51c20e97 100644
--- a/drivers/gpu/drm/i915/i915_utils.c
+++ b/drivers/gpu/drm/i915/i915_utils.c
@@ -110,7 +110,7 @@ void set_timer_ms(struct timer_list *t, unsigned long timeout)
 	 * Paranoia to make sure the compiler computes the timeout before
 	 * loading 'jiffies' as jiffies is volatile and may be updated in
 	 * the background by a timer tick. All to reduce the complexity
-	 * of the addition and reduce the risk of losing a jiffie.
+	 * of the addition and reduce the risk of losing a jiffy.
 	 */
 	barrier();
 
diff --git a/drivers/gpu/drm/v3d/v3d_bo.c b/drivers/gpu/drm/v3d/v3d_bo.c
index a165cbcdd27b..9eafe53a8f41 100644
--- a/drivers/gpu/drm/v3d/v3d_bo.c
+++ b/drivers/gpu/drm/v3d/v3d_bo.c
@@ -279,7 +279,7 @@ v3d_wait_bo_ioctl(struct drm_device *dev, void *data,
 	else
 		args->timeout_ns = 0;
 
-	/* Asked to wait beyond the jiffie/scheduler precision? */
+	/* Asked to wait beyond the jiffy/scheduler precision? */
 	if (ret == -ETIME && args->timeout_ns)
 		ret = -EAGAIN;