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Date: Tue, 12 Aug 2014 15:50:17 +0200 From: Jiri Olsa <jolsa@...hat.com> To: Andi Kleen <andi@...stfloor.org> Cc: linux-kernel@...r.kernel.org, namhyung@...nel.org, acme@...nel.org, mingo@...nel.org, peterz@...radead.org Subject: Re: Implement lbr-as-callgraph v9 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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