ABI: Clarify when /sys/module/MODULENAME is created

/sys/module/MODULENAME is not created unconditionally. This can be
confusing so document the current conditions.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Rob Landley <rob@landley.net>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 7 insertions, 3 deletions

diff --git a/Documentation/ABI/stable/sysfs-module b/Documentation/ABI/stable/sysfs-module
index a0dd21c6db59..6272ae5fb366 100644
--- a/Documentation/ABI/stable/sysfs-module
+++ b/Documentation/ABI/stable/sysfs-module
@@ -4,9 +4,13 @@ Description:
 
         /sys/module/MODULENAME
                 The name of the module that is in the kernel.  This
-                module name will show up either if the module is built
-                directly into the kernel, or if it is loaded as a
-                dynamic module.
+                module name will always show up if the module is loaded as a
+                dynamic module.  If it is built directly into the kernel, it
+                will only show up if it has a version or at least one
+                parameter.
+
+                Note: The conditions of creation in the built-in case are not
+                by design and may be removed in the future.
 
         /sys/module/MODULENAME/parameters
                 This directory contains individual files that are each