Recovering Linux system from hung state via software

Vipul Jain vipulsj at
Thu Nov 28 19:28:02 EST 2013

Hi Kernel alias,

I am a newbie and I am trying to figure out ways where in I can recover the
Linux in below two scenarios:
1. my specific process hangs.
2. kernel gets hung partially or completely.

I have done some reading and seems like there is softlockup and hardlockup
mechanisms in Linux source base that I can use but not sure, if yes I have
below questions:
1. Which kernel version is minimum required for this?
2. How do I know that soft and hard lockup are enabled in my kernel?
3. How can I customize the behavior of default action that been taken?
4. Can I use these two lockup mechanism to find out if my process is hung
or not?
5. Any pointers to any docs that can help will be appreciated.

I will greatly appreciate any help here.

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