Messages in this thread | | | Date | Tue, 9 Sep 2014 06:59:14 +0200 | From | Ingo Molnar <> | Subject | Re: [GIT PULL 00/13] perf/core improvements and fixes |
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* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
> Hi Ingo, > > Please consider pulling, > > - Arnaldo > > The following changes since commit 39b5a56ec0be5effe9b7d0f18cb27724bf2e5d47: > > Merge branch 'rfc/perf' into perf/core, because it's ready for inclusion (2014-08-24 22:35:42 +0200) > > are available in the git repository at: > > > git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo > > for you to fetch changes up to fa3480cb0a96c8af9ded1a8c836c91bd5704bda1: > > perf tools: Add perf_pmu__scan_file() (2014-09-08 17:16:06 -0300) > > ---------------------------------------------------------------- > perf/core improvements and fixes: > > User visible: > > o Add +field argument support for --sort option (Jiri Olsa) > > Infrastructure: > > o More intel PT prep work, from Adrian Hunter, including: > > - Let a user specify a PMU event without any config terms > - Add perf-with-kcore script > - Build programs to copy 32-bit compatibility VDSOs > - Add support for 32-bit compatibility VDSOs > - Let default config be defined for a PMU > - Add perf_pmu__scan_file() > > o Add feature checks to .gitignore (Alexander Shishkin) > > o "perf kvm stat report" improvements by Alexander Yarygin: > o Save pid string in opts.target.pid > o Enable the target.system_wide flag > o Unify the title bar output > > o Fix build issue on powerpc when DWARF support is disabled (Anton Blanchard) > > o Allow to specify lib compile variable for spec usage (Jiri Olsa) > > Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> > > ---------------------------------------------------------------- > Adrian Hunter (6): > perf tools: Let a user specify a PMU event without any config terms > perf tools: Add perf-with-kcore script > perf tools: Build programs to copy 32-bit compatibility VDSOs > perf tools: Add support for 32-bit compatibility VDSOs > perf tools: Let default config be defined for a PMU > perf tools: Add perf_pmu__scan_file() > > Alexander Shishkin (1): > perf tools: Add feature checks to .gitignore > > Alexander Yarygin (3): > perf kvm stat report: Save pid string in opts.target.pid > perf kvm stat report: Enable the target.system_wide flag > perf kvm stat report: Unify the title bar output > > Anton Blanchard (1): > perf tools powerpc: Fix build issue when DWARF support is disabled > > Jiri Olsa (2): > perf tools: Add +field argument support for --sort option > perf tools: Allow to specify lib compile variable for spec usage > > tools/perf/.gitignore | 2 + > tools/perf/Makefile.perf | 42 ++++++- > tools/perf/arch/powerpc/Makefile | 2 +- > tools/perf/builtin-kvm.c | 23 ++-- > tools/perf/config/Makefile | 33 ++++- > tools/perf/config/Makefile.arch | 8 ++ > tools/perf/perf-read-vdso.c | 59 +++++++++ > tools/perf/perf-with-kcore.sh | 259 +++++++++++++++++++++++++++++++++++++++ > tools/perf/tests/pmu.c | 2 +- > tools/perf/util/kvm-stat.h | 1 - > tools/perf/util/parse-events.c | 13 +- > tools/perf/util/parse-events.y | 10 ++ > tools/perf/util/pmu.c | 79 +++++++++--- > tools/perf/util/pmu.h | 12 +- > tools/perf/util/sort.c | 37 +++++- > tools/perf/util/vdso.c | 170 ++++++++++++++++++++++++- > tools/perf/util/vdso.h | 4 +- > 17 files changed, 712 insertions(+), 44 deletions(-) > create mode 100644 tools/perf/perf-read-vdso.c > create mode 100644 tools/perf/perf-with-kcore.sh
Hm, so I'm getting this error, when trying to profile a 32-bit ELF binary on a 64-bit kernel, on a testbox:
$ perf record ~/hackbench 10 Time: 0.115 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.373 MB perf.data (~16279 samples) ] sh: perf-read-vdso32: command not found
comet:~/tip> file ~/hackbench /home/mingo/hackbench: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.2.5, not stripped
64-bit executables work fine:
$ perf record perf bench sched pipe # Running 'sched/pipe' benchmark: # Executed 1000000 pipe operations between two processes
Total time: 13.374 [sec]
13.374352 usecs/op 74769 ops/sec [ perf record: Woken up 14 times to write data ] [ perf record: Captured and wrote 3.602 MB perf.data (~157354 samples) ]
The kernel is an older one:
$ uname -a Linux comet 3.14.17-100.fc19.x86_64 #1 SMP Thu Aug 14 17:17:26 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Thanks,
Ingo
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