Merge tag 'driver-core-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...

[sfrench/cifs-2.6.git] / Documentation / admin-guide / kernel-parameters.txt

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index ff5018b39ed0cf66ab83f147795609fa2cf7dd60..254bfafdcbcdb26031e0d876239ef58b097dac1f 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -832,6 +832,21 @@
                        useful to also enable the page_owner functionality.
                        on: enable the feature
 
+       debugfs=        [KNL] This parameter enables what is exposed to userspace
+                       and debugfs internal clients.
+                       Format: { on, no-mount, off }
+                       on:     All functions are enabled.
+                       no-mount:
+                               Filesystem is not registered but kernel clients can
+                               access APIs and a crashkernel can be used to read
+                               its content. There is nothing to mount.
+                       off:    Filesystem is not registered and clients
+                               get a -EPERM as result when trying to register files
+                               or directories within debugfs.
+                               This is equivalent of the runtime functionality if
+                               debugfs was not enabled in the kernel at all.
+                       Default value is set in build-time with a kernel configuration.
+
        debugpat        [X86] Enable PAT debugging
 
        decnet.addr=    [HW,NET]