Disable JitFunctionAdd and CSwitch markers by default, and add arguments to get them back. #445
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The JitFunctionAdd markers are usually not needed and they can bloat profile sizes by a fair amount.
This allows using --per-cpu-threads without bloating the profile size too much. Sometimes you just want to see samples across all threads and don't care when exactly each thread started and stopped running on a CPU.
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This adds a
--jit-markersand a--cswitch-markerscommand line flag.