-g::
Enables call-graph (stack chain/backtrace) recording.
---call-graph::
+--call-graph [mode,type,min[,limit],order[,key][,branch]]::
Setup and enable call-graph (stack chain/backtrace) recording,
- implies -g.
+ implies -g. See `--call-graph` section in perf-record and
+ perf-report man pages for details.
--children::
Accumulate callchain of children to parent entry so that then can