watchdog: enable the new user interface of the watchdog mechanism

[mirror_ubuntu-bionic-kernel.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 01aa47d3b6ab607e6a66f2a6a827b4b1afe4da73..71eecb263250c5f5f44fe4d45dcb1a405ed9bedb 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2236,8 +2236,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        nmi_watchdog=   [KNL,BUGS=X86] Debugging features for SMP kernels
                        Format: [panic,][nopanic,][num]
-                       Valid num: 0
+                       Valid num: 0 or 1
                        0 - turn nmi_watchdog off
+                       1 - turn nmi_watchdog on
                        When panic is specified, panic when an NMI watchdog
                        timeout occurs (or 'nopanic' to override the opposite
                        default).
@@ -2464,7 +2465,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        nousb           [USB] Disable the USB subsystem
 
-       nowatchdog      [KNL] Disable the lockup detector (NMI watchdog).
+       nowatchdog      [KNL] Disable both lockup detectors, i.e.
+                        soft-lockup and NMI watchdog (hard-lockup).
 
        nowb            [ARM]