[merged mm-nonmm-stable] kernel-rcu-tree_stall-add-sys-kernel-rcu_stall_count.patch removed from -mm tree

[merged mm-nonmm-stable] kernel-rcu-tree_stall-add-sys-kernel-rcu_stall_count.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count
has been removed from the -mm tree.  Its filename was
     kernel-rcu-tree_stall-add-sys-kernel-rcu_stall_count.patch

This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Max Kellermann <max.kellermann@ionos.com>
Subject: kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count
Date: Sun, 4 May 2025 20:08:31 +0200

Expose a simple counter to userspace for monitoring tools.

Link: https://lkml.kernel.org/r/20250504180831.4190860-3-max.kellermann@ionos.com
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
Cc: Core Minyard <cminyard@mvista.com>
Cc: Doug Anderson <dianders@chromium.org>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Kees Cook <kees@kernel.org>
Cc: Song Liu <song@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/ABI/testing/sysfs-kernel-rcu_stall_count |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-kernel-rcu_stall_count a/Documentation/ABI/testing/sysfs-kernel-rcu_stall_count
new file mode 100644
--- /dev/null
+++ a/Documentation/ABI/testing/sysfs-kernel-rcu_stall_count
@@ -0,0 +1,6 @@
+What:		/sys/kernel/rcu_stall_count
+Date:		May 2025
+KernelVersion:	6.16
+Contact:	Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+		Shows how many times the system has detected an RCU stall since last boot.
_

Patches currently in -mm which might be from max.kellermann@ionos.com are