Feb. 11, 2016
6:05 p.m.
On Thu, 11 Feb 2016 14:56:32 +0100, Ricardo Ribalda Delgado said:
What problem are you trying to solve by getting a trace of everything? (Hint - what meaning does a userspace stack traceback have if you're looking at the corresponding kernel stack trace?)
I was doing:
cat /dev/video0
And the open() syscall sometimes was stalling.
I wanted to know at what place open() syscall was waiting...
You can find *that* out by doing a 'cat /proc/NNNN/stack' for NNNN == process id. No need to find *all* the stack traces for that. :)