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Subject[RFC 00/79] perf tools: Initial libperf separation
Date
hi,
we have long term goal to separate some of the perf functionality
into library. This patchset is initial effort on separating some
of the interface.

Currently only the basic counting interface is exported, it allows
to:
- create cpu/threads maps
- create evlist/evsel objects
- add evsel objects into evlist
- open/close evlist/evsel objects
- enable/disable events
- read evsel counts

The initial effort was to have total separation of the objects
from perf code, but it showed not to be a good way. The amount
of changed code was too big with high chance for regressions,
mainly because of the code embedding one of the above objects
statically.

We took the other approach of sharing the objects/struct details
within the perf and libperf code. This way we can keep perf
functionality without any major changes and the libperf users
are still separated from the object/struct details. We can move
to total libperf's objects separation gradually in future.

You can check current interface/functionality in examples under:
tools/perf/lib/Documentation/tutorial

or check tests in here:
$ cd tools/perf/lib && make tests
LINK test-cpumap-a
LINK test-threadmap-a
LINK test-evlist-a
LINK test-evsel-a
LINK test-cpumap-so
LINK test-threadmap-so
LINK test-evlist-so
LINK test-evsel-so
running static:
- running test-cpumap.c...OK
- running test-threadmap.c...OK
- running test-evlist.c...OK
- running test-evsel.c...OK
running dynamic:
- running test-cpumap.c...OK
- running test-threadmap.c...OK
- running test-evlist.c...OK
- running test-evsel.c...OK

The upcoming changes in the near future:
- move parse_events interface in, so we have the event parsing
interface in the library together with the all events from
tools/perf/pmu-events/arch
- add sampling interface with event mmap support and all the
sampling events objects
- add user mmap interface to read counters
- more documentation and tutorial ;-)
- move under tools/lib after the interface is more stable-ish

Big kudos to BPF guys, because most of the infrastructure is
'borrowed' from libbpf library.. ;-)

It's also available in here:
git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
perf/lib

I tested so far on x86, I still need to run it through s390/ppc/arm.

throughts? thanks,
jirka


Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Stephane Eranian <eranian@google.com>
---
Jiri Olsa (79):
perf tools: Move loaded out of struct perf_counts_values
perf tools: Rename struct cpu_map to struct perf_cpu_map
perf tools: Rename struct thread_map to struct perf_thread_map
perf tools: Rename struct perf_evsel to struct evsel
perf tools: Rename struct perf_evlist to struct evlist
perf tools: Rename perf_evsel__init to evsel__init
perf tools: Rename perf_evlist__init to evlist__init
perf tools: Rename perf_evlist__new to evlist__new
perf tools: Rename perf_evlist__delete to evlist__delete
perf tools: Rename perf_evsel__delete to evsel__delete
perf tools: Rename perf_evsel__new to evsel__new
perf tools: Rename perf_evlist__add to evlist__add
perf tools: Rename perf_evlist__remove to evlist__remove
perf tools: Rename perf_evsel__open to evsel__open
perf tools: Rename perf_evsel__enable to evsel__enable
perf tools: Rename perf_evsel__disable to evsel__disable
perf tools: Rename perf_evsel__apply_filter to evsel__apply_filter
perf tools: Rename perf_evsel__cpus to evsel__cpus
perf tools: Rename perf_evlist__open to evlist__open
perf tools: Rename perf_evlist__close to evlist__close
perf tools: Rename perf_evlist__enable to evlist__enable
perf tools: Rename perf_evlist__disable to evlist__disable
libperf: Make libperf.a part of the build
libperf: Add build version support
libperf: Add libperf in python.so compilation
libperf: Add perf/core.h header
libperf: Add debug output support
libperf: Add perf_cpu_map struct
libperf: Add perf_cpu_map__dummy_new function
libperf: Add perf_cpu_map__get/perf_cpu_map__put
libperf: Add perf_thread_map struct
libperf: Add perf_thread_map__new_dummy function
libperf: Add perf_thread_map__get/perf_thread_map__put
libperf: Add perf_evlist and perf_evsel structs
libperf: Include perf_evsel in evsel object
libperf: Include perf_evlist in evlist object
libperf: Add perf_evsel__init function
libperf: Add perf_evlist__init function
libperf: Add perf_evlist__add function
libperf: Add perf_evlist__remove function
libperf: Add nr_entries to perf_evlist
libperf: Add attr to perf_evsel
libperf: Add perf_cpu_map__new/perf_cpu_map__read functions
libperf: Move zalloc.o into libperf
libperf: Add perf_evlist__new function
libperf: Add perf_evsel__new function
libperf: Add perf_evlist__for_each_evsel macro
libperf: Add perf_evlist__delete function
libperf: Add perf_evsel__delete function
libperf: Add cpus to struct perf_evsel
libperf: Add own_cpus to struct perf_evsel
libperf: Add threads to struct perf_evsel
libperf: Add has_user_cpus to struct perf_evlist
libperf: Add cpus to struct perf_evlist
libperf: Add threads to struct perf_evlist
libperf: Add perf_evlist__set_maps function
libperf: Add xyarray object
libperf: Add fd array to struct perf_evsel
libperf: Add nr_members to struct perf_evsel
libperf: Add readn/writen function
libperf: Add perf_evsel__alloc_fd function
libperf: Add perf_evsel__open function
libperf: Add perf_evsel__close function
libperf: Add perf_evsel__read function
libperf: Add perf_evsel__enable/disable/apply_filter functions
libperf: Add perf_cpu_map__for_each_cpu macro
libperf: Add perf_evsel__cpus/threads functions
libperf: Add perf_evlist__open/close functions
libperf: Add perf_evlist__enable/disable functions
libperf: Add perf_evsel__attr functions
libperf: Add install targets
libperf: Add tests support
libperf: Add perf_cpu_map test
libperf: Add perf_thread_map test
libperf: Add perf_evlist test
libperf: Add perf_evsel tests
libperf: Add perf_evlist__enable/disable test
libperf: Add perf_evsel__enable/disable test
libperf: Initial documentation

tools/perf/Makefile.config | 1 +
tools/perf/Makefile.perf | 31 +-
tools/perf/arch/arm/util/auxtrace.c | 4 +-
tools/perf/arch/arm/util/cs-etm.c | 26 +-
tools/perf/arch/arm64/util/arm-spe.c | 6 +-
tools/perf/arch/powerpc/util/kvm-stat.c | 12 +-
tools/perf/arch/s390/util/auxtrace.c | 8 +-
tools/perf/arch/s390/util/kvm-stat.c | 8 +-
tools/perf/arch/x86/tests/intel-cqm.c | 8 +-
tools/perf/arch/x86/tests/perf-time-to-tsc.c | 30 +-
tools/perf/arch/x86/util/auxtrace.c | 10 +-
tools/perf/arch/x86/util/intel-bts.c | 38 +-
tools/perf/arch/x86/util/intel-pt.c | 82 +-
tools/perf/arch/x86/util/kvm-stat.c | 12 +-
tools/perf/bench/epoll-ctl.c | 7 +-
tools/perf/bench/epoll-wait.c | 7 +-
tools/perf/bench/futex-hash.c | 5 +-
tools/perf/bench/futex-lock-pi.c | 7 +-
tools/perf/bench/futex-requeue.c | 7 +-
tools/perf/bench/futex-wake-parallel.c | 6 +-
tools/perf/bench/futex-wake.c | 7 +-
tools/perf/builtin-annotate.c | 16 +-
tools/perf/builtin-c2c.c | 10 +-
tools/perf/builtin-diff.c | 20 +-
tools/perf/builtin-evlist.c | 4 +-
tools/perf/builtin-ftrace.c | 18 +-
tools/perf/builtin-inject.c | 60 +-
tools/perf/builtin-kmem.c | 24 +-
tools/perf/builtin-kvm.c | 46 +-
tools/perf/builtin-lock.c | 30 +-
tools/perf/builtin-mem.c | 2 +-
tools/perf/builtin-record.c | 50 +-
tools/perf/builtin-report.c | 32 +-
tools/perf/builtin-sched.c | 96 +-
tools/perf/builtin-script.c | 167 +--
tools/perf/builtin-stat.c | 135 +--
tools/perf/builtin-timechart.c | 46 +-
tools/perf/builtin-top.c | 71 +-
tools/perf/builtin-trace.c | 180 +--
tools/perf/lib/Build | 12 +
tools/perf/lib/Documentation/Makefile | 7 +
tools/perf/lib/Documentation/man/libperf.rst | 102 ++
tools/perf/lib/Documentation/tutorial/tutorial.rst | 123 ++
tools/perf/lib/Makefile | 158 +++
tools/perf/lib/core.c | 34 +
tools/perf/lib/cpumap.c | 239 ++++
tools/perf/lib/evlist.c | 159 +++
tools/perf/lib/evsel.c | 232 ++++
tools/perf/lib/include/internal/cpumap.h | 17 +
tools/perf/lib/include/internal/evlist.h | 50 +
tools/perf/lib/include/internal/evsel.h | 29 +
tools/perf/lib/include/internal/lib.h | 10 +
tools/perf/lib/include/internal/tests.h | 19 +
tools/perf/lib/include/internal/threadmap.h | 23 +
.../perf/{util => lib/include/internal}/xyarray.h | 6 +-
tools/perf/lib/include/perf/core.h | 22 +
tools/perf/lib/include/perf/cpumap.h | 23 +
tools/perf/lib/include/perf/evlist.h | 35 +
tools/perf/lib/include/perf/evsel.h | 39 +
tools/perf/lib/include/perf/threadmap.h | 18 +
tools/perf/lib/internal.h | 18 +
tools/perf/lib/lib.c | 46 +
tools/perf/lib/libperf.map | 40 +
tools/perf/lib/libperf.pc.template | 11 +
tools/perf/lib/tests/Makefile | 38 +
tools/perf/lib/tests/test-cpumap.c | 21 +
tools/perf/lib/tests/test-evlist.c | 186 +++
tools/perf/lib/tests/test-evsel.c | 125 ++
tools/perf/lib/tests/test-threadmap.c | 21 +
tools/perf/lib/threadmap.c | 81 ++
tools/perf/lib/xyarray.c | 33 +
tools/perf/tests/backward-ring-buffer.c | 18 +-
tools/perf/tests/bitmap.c | 5 +-
tools/perf/tests/bpf.c | 12 +-
tools/perf/tests/code-reading.c | 50 +-
tools/perf/tests/cpumap.c | 21 +-
tools/perf/tests/event-times.c | 81 +-
tools/perf/tests/event_update.c | 13 +-
tools/perf/tests/evsel-roundtrip-name.c | 12 +-
tools/perf/tests/evsel-tp-sched.c | 8 +-
tools/perf/tests/hists_cumulate.c | 18 +-
tools/perf/tests/hists_filter.c | 10 +-
tools/perf/tests/hists_link.c | 10 +-
tools/perf/tests/hists_output.c | 20 +-
tools/perf/tests/keep-tracking.c | 44 +-
tools/perf/tests/mem2node.c | 5 +-
tools/perf/tests/mmap-basic.c | 28 +-
tools/perf/tests/mmap-thread-lookup.c | 4 +-
tools/perf/tests/openat-syscall-all-cpus.c | 18 +-
tools/perf/tests/openat-syscall-tp-fields.c | 14 +-
tools/perf/tests/openat-syscall.c | 10 +-
tools/perf/tests/parse-events.c | 1220 ++++++++++----------
tools/perf/tests/parse-no-sample-id-all.c | 6 +-
tools/perf/tests/perf-record.c | 10 +-
tools/perf/tests/sample-parsing.c | 8 +-
tools/perf/tests/sw-clock.c | 33 +-
tools/perf/tests/switch-tracking.c | 64 +-
tools/perf/tests/task-exit.c | 35 +-
tools/perf/tests/thread-map.c | 28 +-
tools/perf/tests/time-utils-test.c | 2 +-
tools/perf/tests/topology.c | 9 +-
tools/perf/ui/browsers/annotate.c | 16 +-
tools/perf/ui/browsers/hists.c | 54 +-
tools/perf/ui/browsers/res_sample.c | 4 +-
tools/perf/ui/browsers/scripts.c | 6 +-
tools/perf/ui/gtk/annotate.c | 8 +-
tools/perf/ui/gtk/gtk.h | 8 +-
tools/perf/ui/gtk/hists.c | 6 +-
tools/perf/ui/hist.c | 16 +-
tools/perf/util/Build | 6 -
tools/perf/util/annotate.c | 42 +-
tools/perf/util/annotate.h | 26 +-
tools/perf/util/auxtrace.c | 28 +-
tools/perf/util/auxtrace.h | 24 +-
tools/perf/util/bpf-event.c | 2 +-
tools/perf/util/bpf-event.h | 4 +-
tools/perf/util/bpf-loader.c | 34 +-
tools/perf/util/bpf-loader.h | 28 +-
tools/perf/util/build-id.c | 2 +-
tools/perf/util/build-id.h | 2 +-
tools/perf/util/callchain.c | 2 +-
tools/perf/util/callchain.h | 2 +-
tools/perf/util/cgroup.c | 22 +-
tools/perf/util/cgroup.h | 6 +-
tools/perf/util/counts.c | 17 +-
tools/perf/util/counts.h | 34 +-
tools/perf/util/cpumap.c | 264 +----
tools/perf/util/cpumap.h | 54 +-
tools/perf/util/cputopo.c | 13 +-
tools/perf/util/cs-etm.c | 4 +-
tools/perf/util/data-convert-bt.c | 38 +-
tools/perf/util/db-export.c | 10 +-
tools/perf/util/db-export.h | 10 +-
tools/perf/util/env.c | 2 +-
tools/perf/util/env.h | 2 +-
tools/perf/util/event.c | 30 +-
tools/perf/util/event.h | 14 +-
tools/perf/util/evlist.c | 607 +++++-----
tools/perf/util/evlist.h | 215 ++--
tools/perf/util/evsel.c | 496 ++++----
tools/perf/util/evsel.h | 194 ++--
tools/perf/util/evsel_fprintf.c | 16 +-
tools/perf/util/header.c | 225 ++--
tools/perf/util/header.h | 24 +-
tools/perf/util/hist.c | 32 +-
tools/perf/util/hist.h | 38 +-
tools/perf/util/intel-bts.c | 22 +-
tools/perf/util/intel-pt.c | 94 +-
tools/perf/util/jitdump.c | 8 +-
tools/perf/util/kvm-stat.h | 22 +-
tools/perf/util/machine.c | 12 +-
tools/perf/util/machine.h | 8 +-
tools/perf/util/map.h | 2 +-
tools/perf/util/metricgroup.c | 26 +-
tools/perf/util/metricgroup.h | 6 +-
tools/perf/util/mmap.c | 4 +-
tools/perf/util/parse-events.c | 143 +--
tools/perf/util/parse-events.h | 8 +-
tools/perf/util/pmu.c | 15 +-
tools/perf/util/pmu.h | 2 +-
tools/perf/util/python-ext-sources | 2 -
tools/perf/util/python.c | 73 +-
tools/perf/util/record.c | 73 +-
tools/perf/util/s390-cpumsf.c | 4 +-
tools/perf/util/s390-sample-raw.c | 6 +-
tools/perf/util/sample-raw.c | 2 +-
tools/perf/util/sample-raw.h | 6 +-
.../perf/util/scripting-engines/trace-event-perl.c | 14 +-
.../util/scripting-engines/trace-event-python.c | 40 +-
tools/perf/util/session.c | 81 +-
tools/perf/util/session.h | 12 +-
tools/perf/util/setup.py | 3 +-
tools/perf/util/sort.c | 60 +-
tools/perf/util/sort.h | 6 +-
tools/perf/util/stat-display.c | 112 +-
tools/perf/util/stat-shadow.c | 70 +-
tools/perf/util/stat.c | 64 +-
tools/perf/util/stat.h | 35 +-
tools/perf/util/svghelper.c | 7 +-
tools/perf/util/thread_map.c | 131 +--
tools/perf/util/thread_map.h | 58 +-
tools/perf/util/tool.h | 8 +-
tools/perf/util/top.c | 12 +-
tools/perf/util/top.h | 8 +-
tools/perf/util/trace-event-info.c | 14 +-
tools/perf/util/trace-event-scripting.c | 2 +-
tools/perf/util/trace-event.h | 4 +-
tools/perf/util/util.c | 40 -
tools/perf/util/util.h | 4 +-
189 files changed, 5313 insertions(+), 3819 deletions(-)
create mode 100644 tools/perf/lib/Build
create mode 100644 tools/perf/lib/Documentation/Makefile
create mode 100644 tools/perf/lib/Documentation/man/libperf.rst
create mode 100644 tools/perf/lib/Documentation/tutorial/tutorial.rst
create mode 100644 tools/perf/lib/Makefile
create mode 100644 tools/perf/lib/core.c
create mode 100644 tools/perf/lib/cpumap.c
create mode 100644 tools/perf/lib/evlist.c
create mode 100644 tools/perf/lib/evsel.c
create mode 100644 tools/perf/lib/include/internal/cpumap.h
create mode 100644 tools/perf/lib/include/internal/evlist.h
create mode 100644 tools/perf/lib/include/internal/evsel.h
create mode 100644 tools/perf/lib/include/internal/lib.h
create mode 100644 tools/perf/lib/include/internal/tests.h
create mode 100644 tools/perf/lib/include/internal/threadmap.h
rename tools/perf/{util => lib/include/internal}/xyarray.h (84%)
create mode 100644 tools/perf/lib/include/perf/core.h
create mode 100644 tools/perf/lib/include/perf/cpumap.h
create mode 100644 tools/perf/lib/include/perf/evlist.h
create mode 100644 tools/perf/lib/include/perf/evsel.h
create mode 100644 tools/perf/lib/include/perf/threadmap.h
create mode 100644 tools/perf/lib/internal.h
create mode 100644 tools/perf/lib/lib.c
create mode 100644 tools/perf/lib/libperf.map
create mode 100644 tools/perf/lib/libperf.pc.template
create mode 100644 tools/perf/lib/tests/Makefile
create mode 100644 tools/perf/lib/tests/test-cpumap.c
create mode 100644 tools/perf/lib/tests/test-evlist.c
create mode 100644 tools/perf/lib/tests/test-evsel.c
create mode 100644 tools/perf/lib/tests/test-threadmap.c
create mode 100644 tools/perf/lib/threadmap.c
create mode 100644 tools/perf/lib/xyarray.c

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