diff options
| author | Max Kellermann <max.kellermann@ionos.com> | 2025-05-04 20:08:31 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-05-21 10:48:22 -0700 |
| commit | 2536c5c7d6ae5e1d844aa21f28b326b5e7f815ef (patch) | |
| tree | 75f4b1af703493afe4e30962e3c408d71bea7609 | |
| parent | aaf05e96e93cb9c8fc8d35fc4525715530397655 (diff) | |
kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count
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>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-rcu_stall_count | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-rcu_stall_count b/Documentation/ABI/testing/sysfs-kernel-rcu_stall_count new file mode 100644 index 000000000000..a4a97a7f4a4d --- /dev/null +++ b/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. |