Documentation: Improve softlockup_panic= description text

It should say what that <integer> range is and what that integer value
means. I had to look at the code...

Signed-off-by: Borislav Petkov <bp@suse.de>
[jc: changed non-null to nonzero]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index fcaa855..f02961b 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3885,6 +3885,12 @@
                        [KNL] Should the soft-lockup detector generate panics.
                        Format: <integer>
 
+                       A nonzero value instructs the soft-lockup detector
+                       to panic the machine when a soft-lockup occurs. This
+                       is also controlled by CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC
+                       which is the respective build-time switch to that
+                       functionality.
+
        softlockup_all_cpu_backtrace=
                        [KNL] Should the soft-lockup detector generate
                        backtraces on all cpus.