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SubjectRe: process 'stuck' at exit.
On Tue, Dec 10, 2013 at 05:09:46PM -0500, Steven Rostedt wrote:

> So you can do either:
>
> trace-cmd record -p function -l get_user_pages_fast --func-stack sleep 5
>
> Which will trace the get_user_pages_fast and spit out a full call trace.
This gives me a 100M trace.dat, but trace show shows..

# tracer: nop
#
# entries-in-buffer/entries-written: 0/0 #P:4
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |

and that's it.

> Or if you don't want to use trace-cmd, you can do it by hand.

Given the state the system is in, I don't want to perturb it too much.

Dave



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