[ANNOUNCE] v5.10-rc5-rt9v5.10-rc5-rt9-patches

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

3 files changed, 1 insertions, 101 deletions

diff --git a/patches/localversion.patch b/patches/localversion.patch
index 68c7b973cc48..02952cda4bfa 100644
--- a/patches/localversion.patch
+++ b/patches/localversion.patch
@@ -10,4 +10,4 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 --- /dev/null
 +++ b/localversion-rt
 @@ -0,0 +1 @@
-+-rt8
++-rt9
diff --git a/patches/rcu-Don-t-invoke-try_invoke_on_locked_down_task-with.patch b/patches/rcu-Don-t-invoke-try_invoke_on_locked_down_task-with.patch
deleted file mode 100644
index 6b74a5d3d357..000000000000
--- a/patches/rcu-Don-t-invoke-try_invoke_on_locked_down_task-with.patch
+++ /dev/null
@@ -1,97 +0,0 @@
-From: "Paul E. McKenney" <paulmck@kernel.org>
-Date: Thu, 24 Sep 2020 15:11:55 -0700
-Subject: [PATCH] rcu: Don't invoke try_invoke_on_locked_down_task() with
- irqs disabled
-
-The try_invoke_on_locked_down_task() function requires that
-interrupts be enabled, but it is called with interrupts disabled from
-rcu_print_task_stall(), resulting in an "IRQs not enabled as expected"
-diagnostic.  This commit therefore updates rcu_print_task_stall()
-to accumulate a list of the first few tasks while holding the current
-leaf rcu_node structure's ->lock, then releases that lock and only then
-uses try_invoke_on_locked_down_task() to attempt to obtain per-task
-detailed information.  Of course, as soon as ->lock is released, the
-task might exit, so the get_task_struct() function is used to prevent
-the task structure from going away in the meantime.
-
-Link: https://lore.kernel.org/lkml/000000000000903d5805ab908fc4@google.com/
-Reported-by: syzbot+cb3b69ae80afd6535b0e@syzkaller.appspotmail.com
-Reported-by: syzbot+f04854e1c5c9e913cc27@syzkaller.appspotmail.com
-Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- kernel/rcu/tree_stall.h |   22 +++++++++++++++++-----
- 1 file changed, 17 insertions(+), 5 deletions(-)
-
---- a/kernel/rcu/tree_stall.h
-+++ b/kernel/rcu/tree_stall.h
-@@ -249,13 +249,16 @@ static bool check_slow_task(struct task_
- 
- /*
-  * Scan the current list of tasks blocked within RCU read-side critical
-- * sections, printing out the tid of each.
-+ * sections, printing out the tid of each of the first few of them.
-  */
--static int rcu_print_task_stall(struct rcu_node *rnp)
-+static int rcu_print_task_stall(struct rcu_node *rnp, unsigned long flags)
-+	__releases(rnp->lock)
- {
-+	int i = 0;
- 	int ndetected = 0;
- 	struct rcu_stall_chk_rdr rscr;
- 	struct task_struct *t;
-+	struct task_struct *ts[8];
- 
- 	if (!rcu_preempt_blocked_readers_cgp(rnp))
- 		return 0;
-@@ -264,6 +267,14 @@ static int rcu_print_task_stall(struct r
- 	t = list_entry(rnp->gp_tasks->prev,
- 		       struct task_struct, rcu_node_entry);
- 	list_for_each_entry_continue(t, &rnp->blkd_tasks, rcu_node_entry) {
-+		get_task_struct(t);
-+		ts[i++] = t;
-+		if (i >= ARRAY_SIZE(ts))
-+			break;
-+	}
-+	raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
-+	for (i--; i; i--) {
-+		t = ts[i];
- 		if (!try_invoke_on_locked_down_task(t, check_slow_task, &rscr))
- 			pr_cont(" P%d", t->pid);
- 		else
-@@ -273,6 +284,7 @@ static int rcu_print_task_stall(struct r
- 				".q"[rscr.rs.b.need_qs],
- 				".e"[rscr.rs.b.exp_hint],
- 				".l"[rscr.on_blkd_list]);
-+		put_task_struct(t);
- 		ndetected++;
- 	}
- 	pr_cont("\n");
-@@ -293,8 +305,9 @@ static void rcu_print_detail_task_stall_
-  * Because preemptible RCU does not exist, we never have to check for
-  * tasks blocked within RCU read-side critical sections.
-  */
--static int rcu_print_task_stall(struct rcu_node *rnp)
-+static int rcu_print_task_stall(struct rcu_node *rnp, unsigned long flags)
- {
-+	raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
- 	return 0;
- }
- #endif /* #else #ifdef CONFIG_PREEMPT_RCU */
-@@ -472,7 +485,6 @@ static void print_other_cpu_stall(unsign
- 	pr_err("INFO: %s detected stalls on CPUs/tasks:\n", rcu_state.name);
- 	rcu_for_each_leaf_node(rnp) {
- 		raw_spin_lock_irqsave_rcu_node(rnp, flags);
--		ndetected += rcu_print_task_stall(rnp);
- 		if (rnp->qsmask != 0) {
- 			for_each_leaf_node_possible_cpu(rnp, cpu)
- 				if (rnp->qsmask & leaf_node_cpu_bit(rnp, cpu)) {
-@@ -480,7 +492,7 @@ static void print_other_cpu_stall(unsign
- 					ndetected++;
- 				}
- 		}
--		raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
-+		ndetected += rcu_print_task_stall(rnp, flags); // Releases rnp->lock.
- 	}
- 
- 	for_each_possible_cpu(cpu)
diff --git a/patches/series b/patches/series
index a262bc152abf..b4463711602b 100644
--- a/patches/series
+++ b/patches/series
@@ -77,9 +77,6 @@ mm-highmem-Take-kmap_high_get-properly-into-account.patch
 #
 highmem-Don-t-disable-preemption-on-RT-in-kmap_atomi.patch
 
-# 8a26c219cafe66431da3350da1687a50f635f3c2
-rcu-Don-t-invoke-try_invoke_on_locked_down_task-with.patch
-
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 # POSTED
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