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Commit 08825c90 authored by Li Zefan's avatar Li Zefan Committed by Ingo Molnar
Browse files

watchdog: Document watchdog_thresh sysctl 



Signed-off-by: default avatarLi Zefan <lizefan@huawei.com>
Acked-by: default avatarDon Zickus <dzickus@redhat.com>
Link: http://lkml.kernel.org/r/51959678.6000802@huawei.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent a6572f84

Documentation/sysctl/kernel.txt

+14 −0
Original line number Diff line number Diff line
@@ -76,6 +76,7 @@ show up in /proc/sys/kernel: 
- tainted

- threads-max

- unknown_nmi_panic

- watchdog_thresh

- version



==============================================================
@@ -648,3 +649,16 @@ that time, kernel debugging information is displayed on console. 


NMI switch that most IA32 servers have fires unknown NMI up, for

example.  If a system hangs up, try pressing the NMI switch.



==============================================================



watchdog_thresh:



This value can be used to control the frequency of hrtimer and NMI

events and the soft and hard lockup thresholds. The default threshold

is 10 seconds.



The softlockup threshold is (2 * watchdog_thresh). Setting this

tunable to zero will disable lockup detection altogether.



==============================================================