Messages in this thread | | | Date | Tue, 12 Aug 2014 15:50:17 +0200 | From | Jiri Olsa <> | Subject | Re: Implement lbr-as-callgraph v9 |
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On Thu, Jul 31, 2014 at 10:17:00AM -0700, Andi Kleen wrote:
SNIP
> v5: > - Rename functions > - Fix gtk build problem > - Fix crash without -g > - Improve error messages > - Improve srcline display in various ways > v6: > - Port to latest perf/core > v7: > - Really port to latest perf/core > v8: > - Rebased on 3.16-rc1 > v9: > - Forward ported to latest tip/perf/core > > Example output: > > % perf record -b -g ./tsrc/tcall
Why do we need the '-g' in here.. '-b' should be enough right? I saw u fill the rest of the backtrace with callchain data (if needed), but thats not necessary right?
> [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.044 MB perf.data (~1923 samples) ] > % perf report --branch-history
When I captured data like you above and run pure 'perf report' I did not get callchains displayed at all.
Also using 'perf report --branch-history' enables filename:line suffix for callchain regardless of using '-b' for data capture
jirka
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