[GIT PULL] timers fix

[GIT PULL] timers fix

[Ingo Molnar]

Linus,

Please pull the latest timers/urgent git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-2023-09-02

   # HEAD: 96c1fa04f089a7e977a44e4e8fdc92e81be20bef tick/rcu: Fix false positive "softirq work is pending" messages

Fix false positive "softirq work is pending" messages on -rt
kernels, caused by a buggy factoring-out of existing code.

 Thanks,

	Ingo

------------------>
Paul Gortmaker (1):
      tick/rcu: Fix false positive "softirq work is pending" messages


 kernel/time/tick-sched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 4df14db4da49..87015e9deacc 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -1045,7 +1045,7 @@ static bool report_idle_softirq(void)
 		return false;
 
 	/* On RT, softirqs handling may be waiting on some lock */
-	if (!local_bh_blocked())
+	if (local_bh_blocked())
 		return false;
 
 	pr_warn("NOHZ tick-stop error: local softirq work is pending, handler #%02x!!!\n",

Re: [GIT PULL] timers fix

[pr-tracker-bot]

The pull request you sent on Sat, 2 Sep 2023 12:18:35 +0200:

> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-2023-09-02

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/a6216978de56138404e7fd61563f0f199eebf22a

Thank you!

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Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/prtracker.html

[GIT PULL] timers fix

[Ingo Molnar]

Linus,

Please pull the latest timers/urgent git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-2023-10-01

   # HEAD: 1a6a464774947920dcedcf7409be62495c7cedd0 timers: Tag (hr)timer softirq as hotplug safe

Fix a spurious kernel warning during CPU hotplug events that
may trigger when timer/hrtimer softirqs are pending, which
are otherwise hotplug-safe and don't merit a warning.

 Thanks,

	Ingo

------------------>
Frederic Weisbecker (1):
      timers: Tag (hr)timer softirq as hotplug safe


 include/linux/interrupt.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index a92bce40b04b..4a1dc88ddbff 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -569,8 +569,12 @@ enum
  * 	2) rcu_report_dead() reports the final quiescent states.
  *
  * _ IRQ_POLL: irq_poll_cpu_dead() migrates the queue
+ *
+ * _ (HR)TIMER_SOFTIRQ: (hr)timers_dead_cpu() migrates the queue
  */
-#define SOFTIRQ_HOTPLUG_SAFE_MASK (BIT(RCU_SOFTIRQ) | BIT(IRQ_POLL_SOFTIRQ))
+#define SOFTIRQ_HOTPLUG_SAFE_MASK (BIT(TIMER_SOFTIRQ) | BIT(IRQ_POLL_SOFTIRQ) |\
+				   BIT(HRTIMER_SOFTIRQ) | BIT(RCU_SOFTIRQ))
+
 
 /* map softirq index to softirq name. update 'softirq_to_name' in
  * kernel/softirq.c when adding a new softirq.

Re: [GIT PULL] timers fix

[pr-tracker-bot]

The pull request you sent on Sun, 1 Oct 2023 10:51:12 +0200:

> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-2023-10-01

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/373ceff28e7883e02ecf18d3e179d09bfcdab663

Thank you!

-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/prtracker.html

[GIT PULL] timers fix

[Ingo Molnar]

Linus,

Please pull the latest timers/urgent git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-2024-03-17

   # HEAD: 4b6f4c5a67c07417bf29d896c76f513a4be07516 timer/migration: Remove buggy early return on deactivation

Fix timer migration bug that can result in long bootup
delays and other oddities.

 Thanks,

	Ingo

------------------>
Frederic Weisbecker (1):
      timer/migration: Remove buggy early return on deactivation


 kernel/time/timer_migration.c | 20 --------------------
 1 file changed, 20 deletions(-)

diff --git a/kernel/time/timer_migration.c b/kernel/time/timer_migration.c
index 8f49b6b96dfd..611cd904f035 100644
--- a/kernel/time/timer_migration.c
+++ b/kernel/time/timer_migration.c
@@ -751,26 +751,6 @@ bool tmigr_update_events(struct tmigr_group *group, struct tmigr_group *child,
 
 		first_childevt = evt = data->evt;
 
-		/*
-		 * Walking the hierarchy is required in any case when a
-		 * remote expiry was done before. This ensures to not lose
-		 * already queued events in non active groups (see section
-		 * "Required event and timerqueue update after a remote
-		 * expiry" in the documentation at the top).
-		 *
-		 * The two call sites which are executed without a remote expiry
-		 * before, are not prevented from propagating changes through
-		 * the hierarchy by the return:
-		 *  - When entering this path by tmigr_new_timer(), @evt->ignore
-		 *    is never set.
-		 *  - tmigr_inactive_up() takes care of the propagation by
-		 *    itself and ignores the return value. But an immediate
-		 *    return is required because nothing has to be done in this
-		 *    level as the event could be ignored.
-		 */
-		if (evt->ignore && !remote)
-			return true;
-
 		raw_spin_lock(&group->lock);
 
 		childstate.state = 0;

Re: [GIT PULL] timers fix

[pr-tracker-bot]

The pull request you sent on Sun, 17 Mar 2024 10:04:49 +0100:

> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-2024-03-17

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/8048ba24e1e678c595ceec76fed7c0c14f9cab1e

Thank you!

-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/prtracker.html