On Wed, Jan 31, 2024 at 08:32:38PM +0800, Zhang Qiao wrote:
> +2.4 RT_RUNTIME_SHARE sched feature
> +----------------------------
htmldocs build reports new warning:
Documentation/scheduler/sched-rt-group.rst:151: WARNING: Title underline too short.
2.4 RT_RUNTIME_SHARE sched feature
----------------------------
I have to extend the underline:
---- >8 ----
diff --git a/Documentation/scheduler/sched-rt-group.rst b/Documentation/scheduler/sched-rt-group.rst
index 4d8eceb71f5ed8..751113fcd35850 100644
--- a/Documentation/scheduler/sched-rt-group.rst
+++ b/Documentation/scheduler/sched-rt-group.rst
@@ -148,7 +148,7 @@ For now, this can be simplified to just the following (but see Future plans):
\Sum_{i} runtime_{i} <= global_runtime
2.4 RT_RUNTIME_SHARE sched feature
-----------------------------
+----------------------------------
RT_RUNTIME_SHARE allows a cpu borrows rt-runtime from other cpus if it runs
out of its own rt-runtime.
Wording suggestions below.
> +
> +RT_RUNTIME_SHARE allows a cpu borrows rt-runtime from other cpus if it runs
"... to borrow rt-runtime ..."
> +out of its own rt-runtime.
> +
> +With this feature enabled, a rt-task probably hits 100% cpu usage and starves
"... a rt-task may hit ... and can stall other per-cpu tasks ..."
> +per-cpu tasks like kworkers, as a result, it may hang up the whole system.
"..., which lead into system hang."
> +Therefore, in order to avoid such exception, recommand to disable this feature
> +by default unless you really know what you're up to.
"Thus, it is advised to disable this feature by default to avoid aforementioned
issue unless you know what you're doing."
Thanks.
--
An old man doll... just what I always wanted! - Clara
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