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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2021-04-20 14:06:38 +0200
committerJonathan Corbet <corbet@lwn.net>2021-05-13 10:14:17 -0600
commit1e886090cefe26113122a7d59a36a9aec492fef5 (patch)
tree4ef77886e3b776aab2c3e58c1c2c327cc732b4eb /Documentation
parent3e42d1de020805ff3f7d854e1cff742d14e158f5 (diff)
docs: admin-guide: update description for kernel.hotplug sysctl
It's been a few releases since this defaulted to /sbin/hotplug. Update the text, and include pointers to the two CONFIG_UEVENT_HELPER{,_PATH} config knobs whose help text could provide more info, but also hint that the user probably doesn't need to care at all. Fixes: 7934779a69f1 ("Driver-Core: disable /sbin/hotplug by default") Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20210420120638.1104016-1-linux@rasmusvillemoes.dk Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/admin-guide/sysctl/kernel.rst7
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index 1d56a6b73a4e..c24f57f2c782 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -333,7 +333,12 @@ hotplug
=======
Path for the hotplug policy agent.
-Default value is "``/sbin/hotplug``".
+Default value is ``CONFIG_UEVENT_HELPER_PATH``, which in turn defaults
+to the empty string.
+
+This file only exists when ``CONFIG_UEVENT_HELPER`` is enabled. Most
+modern systems rely exclusively on the netlink-based uevent source and
+don't need this.
hung_task_all_cpu_backtrace