From: Omar Sandoval Date: Mon, 21 May 2018 18:18:17 +0000 (-0700) Subject: Documentation: document hung_task_panic kernel parameter X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a49d9c0ae46e149a22aefa8251d07dddd5611851;p=linux.git Documentation: document hung_task_panic kernel parameter This parameter has been around since commit e162b39a368f ("softlockup: decouple hung tasks check from softlockup detection") in 2009 but was never documented. Signed-off-by: Omar Sandoval Signed-off-by: Jonathan Corbet --- diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 8d24270644a14..5385af53a8ca1 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -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: + + 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