Date:	Fri, 22 Jan 2016 13:22:51 -0800
From:	Stephane Eranian <eranian@...gle.com>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Rose Belcher <cel@...ibm.com>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Sonny Rao <sonnyrao@...omium.org>,
	John Mccutchan <johnmccutchan@...gle.com>,
	David Ahern <dsahern@...il.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Pawel Moll <pawel.moll@....com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: [PATCH v8 2/4] perf inject: add jitdump mmap injection support

On Fri, Jan 22, 2016 at 12:44 PM, Arnaldo Carvalho de Melo
<acme@...hat.com> wrote:
> Em Mon, Nov 30, 2015 at 10:02:21AM +0100, Stephane Eranian escreveu:
>> This patch adds a --jit/-j option to perf inject.
>>
>> This options injects MMAP records into the perf.data
>> file to cover the jitted code mmaps. It also emits
>> ELF images for each function in the jidump file.
>> Those images are created where the jitdump file is.
>> The MMAP records point to that location as well.
>>
>> Typical flow:
>> $ perf record -k mono -- java -agentpath:libpjvmti.so java_class
>> $ perf inject --jit -i perf.data -o perf.data.jitted
>> $ perf report -i perf.data.jitted
>
> So, it fails 'make -C tools/perf build-test', specifically the one where
> we ask for a NO_LIBELF build, trying to fix:
>
I have rebase to tip.git last night. Will try your branch today.
Will add a couple of minor adjustments and also better documentation
on how to use it.

> - make_no_libelf: cd . && make -f Makefile   DESTDIR=/tmp/tmp.AzIgKZ2Y7K NO_LIBELF=1
> cd . && make -f Makefile DESTDIR=/tmp/tmp.AzIgKZ2Y7K NO_LIBELF=1
>   BUILD:   Doing 'make -j4' parallel build
>
> Auto-detecting system features:
> ...                         dwarf: [ on  ]
> ...                         glibc: [ on  ]
> ...                          gtk2: [ on  ]
> ...                      libaudit: [ on  ]
> ...                        libbfd: [ on  ]
> ...                        libelf: [ on  ]
> ...                       libnuma: [ on  ]
> ...        numa_num_possible_cpus: [ on  ]
> ...                       libperl: [ on  ]
> ...                     libpython: [ on  ]
> ...                      libslang: [ on  ]
> ...                     libcrypto: [ on  ]
> ...                     libunwind: [ on  ]
> ...            libdw-dwarf-unwind: [ OFF ]
> ...                          zlib: [ on  ]
> ...                          lzma: [ on  ]
> ...                     get_cpuid: [ on  ]
> ...                           bpf: [ on  ]
>
> config/Makefile:364: Disabling post unwind, no support found.
>   GEN      common-cmds.h
>   CC       fd/array.o
>   CC       util/abspath.o
>   LD       fd/libapi-in.o
>   CC       fs/fs.o
>   CC       fs/tracing_path.o
>   LD       fs/libapi-in.o
>   CC       cpu.o
>   CC       event-parse.o
>   LD       libapi-in.o
>   AR       libapi.a
>   CC       util/alias.o
>   CC       event-plugin.o
>   CC       trace-seq.o
>   CC       parse-filter.o
>   CC       parse-utils.o
>   CC       kbuffer-parse.o
>   CC       arch/common.o
>   LD       libtraceevent-in.o
>   LINK     libtraceevent.a
>   CC       exec-cmd.o
>   PERF_VERSION = 4.4.gac64671
>   CC       help.o
>   CC       plugin_jbd2.o
>   CC       util/annotate.o
>   CC       pager.o
>   LD       plugin_jbd2-in.o
>   CC       plugin_hrtimer.o
>   CC       parse-options.o
>   LD       plugin_hrtimer-in.o
>   CC       plugin_kmem.o
>   CC       run-command.o
>   CC       arch/x86/util/header.o
>   LD       plugin_kmem-in.o
>   CC       sigchain.o
>   CC       plugin_kvm.o
>   CC       subcmd-config.o
>   LD       plugin_kvm-in.o
>   CC       plugin_mac80211.o
>   LD       libsubcmd-in.o
>   AR       libsubcmd.a
>   CC       arch/x86/util/tsc.o
>   LD       plugin_mac80211-in.o
>   CC       plugin_sched_switch.o
>   CC       arch/x86/util/pmu.o
>   LD       plugin_sched_switch-in.o
>   CC       plugin_function.o
>   CC       plugin_xen.o
>   LD       plugin_function-in.o
>   CC       arch/x86/util/kvm-stat.o
>   CC       plugin_scsi.o
>   LD       plugin_xen-in.o
>   CC       plugin_cfg80211.o
>   LD       plugin_scsi-in.o
>   LINK     plugin_jbd2.so
>   LD       plugin_cfg80211-in.o
>   LINK     plugin_hrtimer.so
>   CC       arch/x86/tests/arch-tests.o
>   LINK     plugin_kmem.so
>   CC       arch/x86/tests/rdpmc.o
>   LINK     plugin_kvm.so
>   LINK     plugin_mac80211.so
>   LINK     plugin_sched_switch.so
>   LINK     plugin_function.so
>   LINK     plugin_xen.so
>   CC       arch/x86/util/perf_regs.o
>   LINK     plugin_scsi.so
>   LINK     plugin_cfg80211.so
>   CC       arch/x86/tests/perf-time-to-tsc.o
>   GEN      perf-archive
>   CC       arch/x86/util/auxtrace.o
>   GEN      perf-with-kcore
>   CC       ui/gtk/browser.o
>   CC       util/build-id.o
>   CC       arch/x86/util/intel-pt.o
>   CC       arch/x86/tests/insn-x86.o
>   CC       arch/x86/tests/intel-cqm.o
>   CC       util/config.o
>   CC       ui/gtk/hists.o
>   CC       arch/x86/util/intel-bts.o
>   LD       arch/x86/tests/libperf-in.o
>   CC       util/ctype.o
>   CC       util/db-export.o
>   CC       util/env.o
>   LD       arch/x86/util/libperf-in.o
>   LD       arch/x86/libperf-in.o
>   LD       arch/libperf-in.o
>   CC       ui/setup.o
>   CC       util/event.o
>   CC       util/evlist.o
>   CC       ui/helpline.o
>   CC       ui/gtk/setup.o
>   CC       ui/progress.o
>   CC       ui/util.o
>   CC       util/evsel.o
>   CC       ui/gtk/util.o
>   CC       ui/hist.o
>   CC       util/find_bit.o
>   CC       ui/gtk/helpline.o
>   CC       util/kallsyms.o
>   CC       util/levenshtein.o
>   CC       ui/gtk/progress.o
>   CC       util/llvm-utils.o
>   BISON    util/parse-events-bison.c
>   CC       util/perf_regs.o
>   CC       ui/gtk/annotate.o
>   CC       util/path.o
>   CC       util/rbtree.o
>   CC       util/libstring.o
>   CC       ui/stdio/hist.o
>   CC       util/bitmap.o
>   CC       util/hweight.o
>   CC       util/quote.o
>   CC       util/strbuf.o
>   LD       ui/gtk/gtk-in.o
>   LD       gtk-in.o
>   CC       util/string.o
>   CC       builtin-bench.o
>   CC       ui/browser.o
>   CC       util/strlist.o
>   CC       builtin-annotate.o
>   CC       util/strfilter.o
>   CC       util/top.o
>   CC       builtin-config.o
>   CC       ui/browsers/annotate.o
>   CC       util/usage.o
>   CC       builtin-diff.o
>   CC       util/wrapper.o
>   CC       util/dso.o
>   CC       util/symbol.o
>   CC       ui/browsers/hists.o
>   CC       builtin-evlist.o
>   CC       builtin-help.o
>   CC       ui/tui/setup.o
>   CC       util/color.o
>   CC       builtin-sched.o
>   CC       ui/tui/util.o
>   CC       util/header.o
>   CC       ui/tui/helpline.o
>   CC       ui/tui/progress.o
>   LD       ui/tui/libperf-in.o
>   CC       builtin-buildid-list.o
>   CC       builtin-buildid-cache.o
>   CC       builtin-list.o
>   CC       builtin-record.o
>   CC       builtin-report.o
>   CC       ui/browsers/map.o
>   CC       util/callchain.o
>   CC       ui/browsers/scripts.o
>   CC       builtin-stat.o
>   CC       builtin-timechart.o
>   CC       ui/browsers/header.o
>   LD       ui/browsers/libperf-in.o
>   LD       ui/libperf-in.o
>   CC       util/values.o
>   CC       scripts/perl/Perf-Trace-Util/Context.o
>   CC       util/debug.o
>   CC       builtin-top.o
>   LD       scripts/perl/Perf-Trace-Util/libperf-in.o
>   CC       scripts/python/Perf-Trace-Util/Context.o
>   CC       builtin-script.o
>   CC       util/machine.o
>   LD       scripts/python/Perf-Trace-Util/libperf-in.o
>   LD       scripts/libperf-in.o
>   CC       util/map.o
>   CC       builtin-kmem.o
>   CC       util/pstack.o
>   CC       util/session.o
>   CC       util/ordered-events.o
>   CC       builtin-lock.o
>   CC       util/comm.o
>   CC       builtin-kvm.o
>   CC       util/thread.o
>   CC       util/thread_map.o
>   CC       util/trace-event-parse.o
>   CC       builtin-inject.o
>   CC       builtin-mem.o
>   CC       builtin-data.o
>   CC       util/parse-events-bison.o
>   CC       builtin-version.o
>   CC       builtin-trace.o
>   CC       bench/sched-messaging.o
>   CC       tests/builtin-test.o
>   BISON    util/pmu-bison.c
>   CC       bench/sched-pipe.o
>   CC       util/trace-event-read.o
>   CC       tests/parse-events.o
>   CC       bench/mem-functions.o
>   CC       util/trace-event-info.o
>   CC       bench/futex-hash.o
>   CC       util/trace-event-scripting.o
>   CC       bench/futex-wake.o
>   CC       util/trace-event.o
>   CC       perf.o
>   CC       bench/futex-wake-parallel.o
>   CC       util/svghelper.o
>   CC       tests/dso-data.o
>   CC       bench/futex-requeue.o
>   CC       bench/futex-lock-pi.o
>   CC       bench/mem-memcpy-x86-64-asm.o
>   CC       bench/mem-memset-x86-64-asm.o
>   CC       bench/numa.o
>   CC       tests/attr.o
>   CC       tests/vmlinux-kallsyms.o
>   CC       util/sort.o
>   CC       tests/openat-syscall.o
>   CC       tests/openat-syscall-all-cpus.o
>   CC       tests/openat-syscall-tp-fields.o
>   CC       tests/mmap-basic.o
>   CC       tests/perf-record.o
>   LD       bench/perf-in.o
>   CC       tests/evsel-roundtrip-name.o
>   CC       tests/evsel-tp-sched.o
>   CC       tests/fdarray.o
>   CC       tests/pmu.o
>   CC       tests/hists_common.o
>   CC       tests/hists_link.o
>   CC       util/hist.o
>   CC       tests/hists_filter.o
>   CC       tests/hists_output.o
>   CC       tests/hists_cumulate.o
>   CC       tests/python-use.o
>   CC       tests/bp_signal.o
>   CC       util/util.o
>   CC       util/xyarray.o
>   CC       tests/bp_signal_overflow.o
>   CC       util/cpumap.o
>   CC       util/cgroup.o
>   CC       tests/task-exit.o
>   CC       util/target.o
>   CC       tests/sw-clock.o
>   CC       util/rblist.o
>   CC       util/intlist.o
>   CC       util/vdso.o
>   CC       util/counts.o
>   CC       tests/mmap-thread-lookup.o
>   CC       tests/thread-mg-share.o
>   CC       util/stat.o
>   CC       util/stat-shadow.o
>   CC       tests/switch-tracking.o
>   CC       tests/keep-tracking.o
>   CC       util/record.o
>   CC       util/srcline.o
>   CC       tests/code-reading.o
>   CC       tests/sample-parsing.o
>   CC       util/data.o
>   CC       tests/parse-no-sample-id-all.o
>   CC       util/tsc.o
>   CC       util/cloexec.o
>   CC       tests/kmod-path.o
>   CC       util/thread-stack.o
>   CC       tests/thread-map.o
>   CC       util/auxtrace.o
>   CC       tests/llvm.o
>   CC       tests/bpf.o
>   CC       util/intel-pt-decoder/intel-pt-pkt-decoder.o
>   CC       tests/topology.o
>   CC       tests/cpumap.o
>   GEN      util/intel-pt-decoder/inat-tables.c
>   CC       util/scripting-engines/trace-event-perl.o
>   CC       util/intel-pt-decoder/intel-pt-log.o
>   CC       tests/stat.o
>   CC       tests/event_update.o
>   CC       util/intel-pt-decoder/intel-pt-decoder.o
>   CC       tests/llvm-src-base.o
>   CC       tests/llvm-src-kbuild.o
>   CC       tests/llvm-src-prologue.o
>   CC       util/scripting-engines/trace-event-python.o
>   LD       tests/perf-in.o
>   LD       perf-in.o
>   CC       util/intel-pt.o
>   CC       util/intel-bts.o
>   LD       util/scripting-engines/libperf-in.o
>   CC       util/parse-branch-options.o
>   GEN      libtraceevent-dynamic-list
>   CC       util/intel-pt-decoder/intel-pt-insn-decoder.o
>   CC       util/parse-regs-options.o
>   CC       util/term.o
>   CC       util/help-unknown-cmd.o
>   CC       util/symbol-minimal.o
>   CC       util/zlib.o
>   GEN      python/perf.so
>   CC       util/lzma.o
>   LD       util/intel-pt-decoder/libperf-in.o
>   CC       util/demangle-java.o
>   CC       util/jitdump.o
>   CC       util/genelf.o
>   FLEX     util/parse-events-flex.c
>   FLEX     util/pmu-flex.c
>   CC       util/pmu-bison.o
>   CC       util/parse-events.o
>   CC       util/parse-events-flex.o
>   CC       util/pmu.o
>   CC       util/pmu-flex.o
>   LD       util/libperf-in.o
>   LD       libperf-in.o
>   AR       libperf.a
>   LINK     perf
>   LINK     libperf-gtk.so
> libperf.a(libperf-in.o): In function `jit_write_elf':
> /home/acme/git/linux/tools/perf/util/genelf.c:170: undefined reference to `elf_version'
> /home/acme/git/linux/tools/perf/util/genelf.c:175: undefined reference to `elf_begin'
> /home/acme/git/linux/tools/perf/util/genelf.c:184: undefined reference to `elf64_newehdr'
> /home/acme/git/linux/tools/perf/util/genelf.c:201: undefined reference to `elf_newscn'
> /home/acme/git/linux/tools/perf/util/genelf.c:207: undefined reference to `elf_newdata'
> /home/acme/git/linux/tools/perf/util/genelf.c:220: undefined reference to `elf64_getshdr'
> /home/acme/git/linux/tools/perf/util/genelf.c:235: undefined reference to `elf_newscn'
> /home/acme/git/linux/tools/perf/util/genelf.c:241: undefined reference to `elf_newdata'
> /home/acme/git/linux/tools/perf/util/genelf.c:254: undefined reference to `elf64_getshdr'
> /home/acme/git/linux/tools/perf/util/genelf.c:271: undefined reference to `elf_newscn'
> /home/acme/git/linux/tools/perf/util/genelf.c:277: undefined reference to `elf_newdata'
> /home/acme/git/linux/tools/perf/util/genelf.c:290: undefined reference to `elf64_getshdr'
> /home/acme/git/linux/tools/perf/util/genelf.c:314: undefined reference to `elf_newscn'
> /home/acme/git/linux/tools/perf/util/genelf.c:320: undefined reference to `elf_newdata'
> /home/acme/git/linux/tools/perf/util/genelf.c:333: undefined reference to `elf64_getshdr'
> /home/acme/git/linux/tools/perf/util/genelf.c:347: undefined reference to `elf_newscn'
> /home/acme/git/linux/tools/perf/util/genelf.c:353: undefined reference to `elf_newdata'
> /home/acme/git/linux/tools/perf/util/genelf.c:375: undefined reference to `elf64_getshdr'
> /home/acme/git/linux/tools/perf/util/genelf.c:388: undefined reference to `elf_update'
> /home/acme/git/linux/tools/perf/util/genelf.c:395: undefined reference to `elf_end'
> collect2: error: ld returned 1 exit status
> Makefile.perf:333: recipe for target 'perf' failed
> make[4]: *** [perf] Error 1
> make[4]: *** Waiting for unfinished jobs....
> Makefile:68: recipe for target 'all' failed
> make[3]: *** [all] Error 2
>   test: test -x ./perf
> tests/make:273: recipe for target 'make_no_libelf' failed
> make[2]: *** [make_no_libelf] Error 1
> tests/make:7: recipe for target 'all' failed
> make[1]: *** [all] Error 2
> Makefile:81: recipe for target 'build-test' failed
> make: *** [build-test] Error 2
> make: Leaving directory '/home/acme/git/linux/tools/perf'
>
>  Performance counter stats for 'make -C tools/perf build-test':
>
>     1007267.820554      task-clock (msec)         #    2.516 CPUs utilized
>            591,484      context-switches          #    0.587 K/sec
>             66,439      cpu-migrations            #    0.066 K/sec
>         26,771,257      page-faults               #    0.027 M/sec
>  2,863,648,588,724      cycles                    #    2.843 GHz
>    <not supported>      stalled-cycles-frontend
>    <not supported>      stalled-cycles-backend
>  2,459,464,718,802      instructions              #    0.86  insns per cycle
>    547,848,880,912      branches                  #  543.896 M/sec
>     14,513,951,279      branch-misses             #    2.65% of all branches
>
>      400.280077927 seconds time elapsed
>
> [acme@...et linux]$
>

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