Softlockup and Hardlockup sample test module
- Date: Sun, 15 Apr 2018 13:17:27 +0530
- From: Ivid Suvarna <ivid.suvarna@xxxxxxxxx>
- Subject: Softlockup and Hardlockup sample test module
Could you please provide some sample test module for causing a
Softlockup and Hardlockup in latest kernel for SMP for testing
purposes. I assume there are some Kconfigs to be enabled as well for
I had tried with the module where I put a busy loop inside spinlock
but was not able to cause any lockups. Maybe this is because of SMP
which schedule the job to other CPU. "How do I make a task to run on
single CPU only?"
I only get RCU stalls sometimes instead of softlockup when I use busy
loop inside a spinlock. Is there any explanation for difference
between these stalls and softlockup.