Re: calling hooks from inside timer interrupt handler freezes machine

["Mulyadi Santosa" <mulyadi.santosa@xxxxxxxxx>]

Hello...

> Why is registering an empty function and calling it from inside do_timer
> freezing the system after a short period of good run?

There are several suspects:
1. your code (call_timer_hook) is called while xtime_lock is held. it
could lead to lock contention.
2. you're running out of kernel stack. I don't have hard proof, purely
blind guessing. Try to make all your hook function a "static inline"
one. Silently overflowing kernel stack, AFAIK, is hard to detect. Do
you use 4K or 8K stack size? try 8K and see if it helps.

Before I forgot, you said it runs OK for after (quick?) period? So
this problem is intermitent?

regards,

Mulyadi.

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