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. :)
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