Messages in this thread | | | Date | Mon, 3 Sep 2018 09:12:30 -0700 | From | Andi Kleen <> | Subject | Re: [PATCH v2 04/10] perf, tools, script: Allow sym and dso without ip, addr |
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On Mon, Sep 03, 2018 at 09:15:10AM +0200, Jiri Olsa wrote: > On Fri, Aug 31, 2018 at 03:02:00PM -0700, Andi Kleen wrote: > > From: Andi Kleen <ak@linux.intel.com> > > > > Currently sym and dso require printing ip and addr because > > the print function is tied to those outputs. With callindent > > it makes sense to print the symbol or dso without numerical > > IP or ADDR. So change the dependency check to only check the > > underlying attribute. > > > > This allows to remove a lot of noise in callindent output by > > dropping the numerical addresses, which are not all that useful. > > > > Before > > > > % perf script --itrace=cr -F +callindent > > swapper 0 [000] 156546.354971: 1 branches: pt_config 0 [unknown] ([unknown]) => ffffffff81010486 pt_config ([kernel.kallsyms]) > > swapper 0 [000] 156546.354971: 1 branches: pt_config ffffffff81010499 pt_config ([kernel.kallsyms]) => ffffffff8101063e pt_event_add ([kernel.kallsyms]) > > swapper 0 [000] 156546.354971: 1 branches: pt_event_add ffffffff81010635 pt_event_add ([kernel.kallsyms]) => ffffffff8115e687 event_sched_in.isra.107 ([kernel.kallsyms]) > > swapper 0 [000] 156546.354971: 1 branches: perf_pmu_enable ffffffff8115e726 event_sched_in.isra.107 ([kernel.kallsyms]) => ffffffff811579b0 perf_pmu_enable ([kernel.kallsyms]) > > swapper 0 [000] 156546.354971: 1 branches: perf_pmu_nop_void ffffffff81151730 perf_pmu_nop_void ([kernel.kallsyms]) => ffffffff8115e72b event_sched_in.isra.107 ([kernel.kallsyms]) > > swapper 0 [000] 156546.354971: 1 branches: event_sched_in.isra.107 ffffffff8115e737 event_sched_in.isra.107 ([kernel.kallsyms]) => ffffffff8115e7a5 group_sched_in ([kernel.kallsyms]) > > swapper 0 [000] 156546.354971: 1 branches: __x86_indirect_thunk_rax ffffffff8115e7f6 group_sched_in ([kernel.kallsyms]) => ffffffff81a03000 __x86_indirect_thunk_rax ([kernel.kallsyms]) > > > > After > > > > % perf script --itrace=cr -F +callindent,-ip,-sym,-symoff > > swapper 0 [000] 156546.354971: 1 branches: pt_config > > swapper 0 [000] 156546.354971: 1 branches: pt_config > > swapper 0 [000] 156546.354971: 1 branches: pt_event_add > > swapper 0 [000] 156546.354971: 1 branches: perf_pmu_enable > > swapper 0 [000] 156546.354971: 1 branches: perf_pmu_nop_void > > swapper 0 [000] 156546.354971: 1 branches: event_sched_in.isra.107 > > swapper 0 [000] 156546.354971: 1 branches: __x86_indirect_thunk_rax > > swapper 0 [000] 156546.354971: 1 branches: perf_pmu_nop_int > > swapper 0 [000] 156546.354971: 1 branches: group_sched_in > > swapper 0 [000] 156546.354971: 1 branches: event_filter_match > > swapper 0 [000] 156546.354971: 1 branches: event_filter_match > > swapper 0 [000] 156546.354971: 1 branches: group_sched_in > > I'm getting different output than advertised > > [jolsa@krava perf]$ ./perf script --itrace=cr -F +callindent,-ip,-sym,-symoff | head -3 > ls 1926 [000] 55509.544711: 1 branches:uhH: _start => 7f9722fa0f60 (/usr/lib64/ld-2.27.so) > ls 1926 [000] 55509.544711: 1 branches:uhH: _start => 0 ([unknown]) > ls 1926 [000] 55509.544716: 1 branches:uhH: _start => 7f9722fa0f60 (/usr/lib64/ld-2.27.so)
Yes it needs the next patch too. There's no good way to show the effect independently.
I will merge them into one.
-Andi
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