Merge tag 'timers-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer cleanups from Thomas Gleixner:
 "Another set of timer API cleanups:

    - Convert init_timer*(), try_to_del_timer_sync() and
      destroy_timer_on_stack() over to the canonical timer_*()
      namespace convention.

  There is another large conversion pending, which has not been included
  because it would have caused a gazillion of merge conflicts in next.
  The conversion scripts will be run towards the end of the merge window
  and a pull request sent once all conflict dependencies have been
  merged"

* tag 'timers-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  treewide, timers: Rename destroy_timer_on_stack() as timer_destroy_on_stack()
  treewide, timers: Rename try_to_del_timer_sync() as timer_delete_sync_try()
  timers: Rename init_timers() as timers_init()
  timers: Rename NEXT_TIMER_MAX_DELTA as TIMER_NEXT_MAX_DELTA
  timers: Rename __init_timer_on_stack() as __timer_init_on_stack()
  timers: Rename __init_timer() as __timer_init()
  timers: Rename init_timer_on_stack_key() as timer_init_key_on_stack()
  timers: Rename init_timer_key() as timer_init_key()

Author: torvalds

arch/powerpc/kvm/booke.c

@@ -572,7 +572,7 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
 
 /*
  * Return the number of jiffies until the next timeout.  If the timeout is
- * longer than the NEXT_TIMER_MAX_DELTA, then return NEXT_TIMER_MAX_DELTA
+ * longer than the TIMER_NEXT_MAX_DELTA, then return TIMER_NEXT_MAX_DELTA
  * because the larger value can break the timer APIs.
  */
 static unsigned long watchdog_next_timeout(struct kvm_vcpu *vcpu)
@@ -598,7 +598,7 @@ static unsigned long watchdog_next_timeout(struct kvm_vcpu *vcpu)
 	if (do_div(nr_jiffies, tb_ticks_per_jiffy))
 		nr_jiffies++;
 
-	return min_t(unsigned long long, nr_jiffies, NEXT_TIMER_MAX_DELTA);
+	return min_t(unsigned long long, nr_jiffies, TIMER_NEXT_MAX_DELTA);
 }
 
 static void arm_next_watchdog(struct kvm_vcpu *vcpu)
@@ -616,10 +616,10 @@ static void arm_next_watchdog(struct kvm_vcpu *vcpu)
 	spin_lock_irqsave(&vcpu->arch.wdt_lock, flags);
 	nr_jiffies = watchdog_next_timeout(vcpu);
 	/*
-	 * If the number of jiffies of watchdog timer >= NEXT_TIMER_MAX_DELTA
+	 * If the number of jiffies of watchdog timer >= TIMER_NEXT_MAX_DELTA
 	 * then do not run the watchdog timer as this can break timer APIs.
 	 */
-	if (nr_jiffies < NEXT_TIMER_MAX_DELTA)
+	if (nr_jiffies < TIMER_NEXT_MAX_DELTA)
 		mod_timer(&vcpu->arch.wdt_timer, jiffies + nr_jiffies);
 	else
 		timer_delete(&vcpu->arch.wdt_timer);

arch/x86/kernel/apic/vector.c

@@ -864,7 +864,7 @@ void lapic_offline(void)
 	__vector_cleanup(cl, false);
 
 	irq_matrix_offline(vector_matrix);
-	WARN_ON_ONCE(try_to_del_timer_sync(&cl->timer) < 0);
+	WARN_ON_ONCE(timer_delete_sync_try(&cl->timer) < 0);
 	WARN_ON_ONCE(!hlist_empty(&cl->head));
 
 	unlock_vector_lock();

drivers/base/power/main.c

@@ -560,7 +560,7 @@ static void dpm_watchdog_clear(struct dpm_watchdog *wd)
 	struct timer_list *timer = &wd->timer;
 
 	timer_delete_sync(timer);
-	destroy_timer_on_stack(timer);
+	timer_destroy_on_stack(timer);
 }
 #else
 #define DECLARE_DPM_WATCHDOG_ON_STACK(wd)

drivers/char/random.c

@@ -1312,9 +1312,9 @@ static void __cold try_to_generate_entropy(void)
 	while (!crng_ready() && !signal_pending(current)) {
 		/*
 		 * Check !timer_pending() and then ensure that any previous callback has finished
-		 * executing by checking try_to_del_timer_sync(), before queueing the next one.
+		 * executing by checking timer_delete_sync_try(), before queueing the next one.
 		 */
-		if (!timer_pending(&stack->timer) && try_to_del_timer_sync(&stack->timer) >= 0) {
+		if (!timer_pending(&stack->timer) && timer_delete_sync_try(&stack->timer) >= 0) {
 			struct cpumask timer_cpus;
 			unsigned int num_cpus;
 
@@ -1354,7 +1354,7 @@ static void __cold try_to_generate_entropy(void)
 	mix_pool_bytes(&stack->entropy, sizeof(stack->entropy));
 
 	timer_delete_sync(&stack->timer);
-	destroy_timer_on_stack(&stack->timer);
+	timer_destroy_on_stack(&stack->timer);
 }
 
 

drivers/dma-buf/st-dma-fence.c

@@ -413,7 +413,7 @@ static int test_wait_timeout(void *arg)
 	err = 0;
 err_free:
 	timer_delete_sync(&wt.timer);
-	destroy_timer_on_stack(&wt.timer);
+	timer_destroy_on_stack(&wt.timer);
 	dma_fence_signal(wt.f);
 	dma_fence_put(wt.f);
 	return err;

drivers/firewire/core-transaction.c

@@ -431,7 +431,7 @@ int fw_run_transaction(struct fw_card *card, int tcode, int destination_id,
 	fw_send_request(card, &t, tcode, destination_id, generation, speed,
 			offset, payload, length, transaction_callback, &d);
 	wait_for_completion(&d.done);
-	destroy_timer_on_stack(&t.split_timeout_timer);
+	timer_destroy_on_stack(&t.split_timeout_timer);
 
 	return d.rcode;
 }

drivers/firmware/psci/psci_checker.c

@@ -343,7 +343,7 @@ static int suspend_test_thread(void *arg)
 	 * later.
 	 */
 	timer_delete(&wakeup_timer);
-	destroy_timer_on_stack(&wakeup_timer);
+	timer_destroy_on_stack(&wakeup_timer);
 
 	if (atomic_dec_return_relaxed(&nb_active_threads) == 0)
 		complete(&suspend_threads_done);

drivers/gpu/drm/gud/gud_pipe.c

@@ -261,7 +261,7 @@ static int gud_usb_bulk(struct gud_device *gdrm, size_t len)
 	else if (ctx.sgr.bytes != len)
 		ret = -EIO;
 
-	destroy_timer_on_stack(&ctx.timer);
+	timer_destroy_on_stack(&ctx.timer);
 
 	return ret;
 }

drivers/gpu/drm/i915/gt/selftest_migrate.c

@@ -661,7 +661,7 @@ static int live_emit_pte_full_ring(void *arg)
 out_rq:
 	i915_request_add(rq); /* GEM_BUG_ON(rq->reserved_space > ring->space)? */
 	timer_delete_sync(&st.timer);
-	destroy_timer_on_stack(&st.timer);
+	timer_destroy_on_stack(&st.timer);
 out_unpin:
 	intel_context_unpin(ce);
 out_put:

drivers/gpu/drm/i915/selftests/lib_sw_fence.c

@@ -77,7 +77,7 @@ void timed_fence_fini(struct timed_fence *tf)
 	if (timer_delete_sync(&tf->timer))
 		i915_sw_fence_commit(&tf->fence);
 
-	destroy_timer_on_stack(&tf->timer);
+	timer_destroy_on_stack(&tf->timer);
 	i915_sw_fence_fini(&tf->fence);
 }