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| author | Zhenzhong Duan <zhenzhong.duan@oracle.com> | 2019-05-21 10:32:08 +0800 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2019-05-29 15:50:01 -0600 |
| commit | 93285c01977729a2e046e065e4b99791b966130c (patch) | |
| tree | 8b873501e8d87392d0a6cd6fb9f515f39bfa9054 /Documentation/admin-guide/kernel-parameters.txt | |
| parent | fe4ec72cca500b2f97ffa0429b4cd57f67e0821d (diff) | |
| download | lwn-93285c01977729a2e046e065e4b99791b966130c.tar.gz lwn-93285c01977729a2e046e065e4b99791b966130c.zip | |
doc: kernel-parameters.txt: fix documentation of nmi_watchdog parameter
The default behavior of hardlockup depends on the config of
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC.
Fix the description of nmi_watchdog to make it clear.
Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 138f6664b2e2..79d043b8850d 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2836,8 +2836,9 @@ 0 - turn hardlockup detector in nmi_watchdog off 1 - turn hardlockup detector in nmi_watchdog on When panic is specified, panic when an NMI watchdog - timeout occurs (or 'nopanic' to override the opposite - default). To disable both hard and soft lockup detectors, + timeout occurs (or 'nopanic' to not panic on an NMI + watchdog, if CONFIG_BOOTPARAM_HARDLOCKUP_PANIC is set) + To disable both hard and soft lockup detectors, please see 'nowatchdog'. This is useful when you use a panic=... timeout and need the box quickly up again. |