[PATCH v2] Documentation: add reference from dynamic debug to loglevel kernel params

[Daniel Lublin]

This is useful information for somebody who has managed to dig into
enabling debug output, but is wondering why there is no such output
appearing on the console.

Signed-off-by: Daniel Lublin <daniel@xxxxxxxxx>
---
 Documentation/admin-guide/dynamic-debug-howto.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/admin-guide/dynamic-debug-howto.rst b/Documentation/admin-guide/dynamic-debug-howto.rst
index 0e9b48daf690..7c036590cd07 100644
--- a/Documentation/admin-guide/dynamic-debug-howto.rst
+++ b/Documentation/admin-guide/dynamic-debug-howto.rst
@@ -26,6 +26,11 @@ Dynamic debug provides:
    - format string
    - class name (as known/declared by each module)
 
+NOTE: To actually get the debug-print output on the console, you may
+need to adjust the kernel ``loglevel=``, or use ``ignore_loglevel``.
+Read about these kernel parameters in
+Documentation/admin-guide/kernel-parameters.rst.
+
 Viewing Dynamic Debug Behaviour
 ===============================
 
-- 
2.45.2