ftrace: Add 'function-fork' trace option
The function-fork option is same as event-fork that it tracks task fork/exit and set the pid filter properly. This can be useful if user wants to trace selected tasks including their children only. Link: http://lkml.kernel.org/r/20170417024430.21194-3-namhyung@kernel.org Signed-off-by:Namhyung Kim <namhyung@kernel.org> Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org>
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b980b117