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| author | Joel Savitz <jsavitz@redhat.com> | 2022-03-25 01:11:56 +0300 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2022-05-02 02:14:09 +0300 |
| commit | 81c653659d34ec253fba7f5d0f430813fe0f643d (patch) | |
| tree | cbe04cabcd392bf3b1037b60961de62fb311f142 /Documentation/admin-guide | |
| parent | a477b94d657875c81775b7e5147fd2671ff25ce0 (diff) | |
| download | linux-81c653659d34ec253fba7f5d0f430813fe0f643d.tar.xz | |
Documentation/sysctl: document max_rcu_stall_to_panic
commit dfe564045c65 ("rcu: Panic after fixed number of stalls")
introduced a new systctl but no accompanying documentation.
Add a simple entry to the documentation.
Signed-off-by: Joel Savitz <jsavitz@redhat.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/sysctl/kernel.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 1144ea3229a3..545d2d7420a1 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -783,6 +783,13 @@ is useful to define the root cause of RCU stalls using a vmcore. 1 panic() after printing RCU stall messages. = ============================================================ +max_rcu_stall_to_panic +====================== + +When ``panic_on_rcu_stall`` is set to 1, this value determines the +number of times that RCU can stall before panic() is called. + +When ``panic_on_rcu_stall`` is set to 0, this value is has no effect. perf_cpu_time_max_percent ========================= |