Default timeout for hung task detection (in seconds)

configname: CONFIG_DEFAULT_HUNG_TASK_TIMEOUT

Linux Kernel Configuration
└─>Kernel hacking
└─>Debug Oops, Lockups and Hangs
└─>Default timeout for hung task detection (in seconds)
In linux kernel since version 3 (release Date: 2011-07-21)  
This option controls the default timeout (in seconds) used
to determine when a task has become non-responsive and should
be considered hung.

It can be adjusted at runtime via the kernel.hung_task_timeout_secs
sysctl or by writing a value to
/proc/sys/kernel/hung_task_timeout_secs.

A timeout of 0 disables the check. The default is two minutes.
Keeping the default should be fine in most cases.