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Commit a49d9c0a authored by Omar Sandoval's avatar Omar Sandoval Committed by Jonathan Corbet
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Documentation: document hung_task_panic kernel parameter 



This parameter has been around since commit e162b39a ("softlockup:
decouple hung tasks check from softlockup detection") in 2009 but was
never documented.

Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent f462951e

Documentation/admin-guide/kernel-parameters.txt

+10 −1
Original line number Diff line number Diff line
@@ -1341,12 +1341,21 @@ 
			x86-64 are 2M (when the CPU supports "pse") and 1G

			(when the CPU supports the "pdpe1gb" cpuinfo flag).



	hung_task_panic=

			[KNL] Should the hung task detector generate panics.

			Format: <integer>



			A nonzero value instructs the kernel to panic when a

			hung task is detected. The default value is controlled

			by the CONFIG_BOOTPARAM_HUNG_TASK_PANIC build-time

			option. The value selected by this boot parameter can

			be changed later by the kernel.hung_task_panic sysctl.



	hvc_iucv=	[S390]	Number of z/VM IUCV hypervisor console (HVC)

				terminal devices. Valid values: 0..8

	hvc_iucv_allow=	[S390]	Comma-separated list of z/VM user IDs.

				If specified, z/VM IUCV HVC accepts connections

				from listed z/VM user IDs only.



	keep_bootcon	[KNL]

			Do not unregister boot console at start. This is only

			useful for debugging when something happens in the window