1 files changed, 8 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 661efd4dab6b..a0c5c5f4fce6 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -973,6 +973,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
         ignore_loglevel [KNL]
                         Ignore loglevel setting - this will print /all/
                         kernel messages to the console. Useful for debugging.
+                        We also add it as printk module parameter, so users
+                        could change it dynamically, usually by
+                        /sys/module/printk/parameters/ignore_loglevel.
 
         ihash_entries=  [KNL]
                         Set number of hash buckets for inode cache.
@@ -1666,6 +1669,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         debugging driver suspend/resume hooks).  This may
                         not work reliably with all consoles, but is known
                         to work with serial and VGA consoles.
+                        To facilitate more flexible debugging, we also add
+                        console_suspend, a printk module parameter to control
+                        it. Users could use console_suspend (usually
+                        /sys/module/printk/parameters/console_suspend) to
+                        turn on/off it dynamically.
 
         noaliencache    [MM, NUMA, SLAB] Disables the allocation of alien
                         caches in the slab allocator.  Saves per-node memory,