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    Subject[PATCH 0/9] perf annotation of BPF programs
    Date
    This series enables annotation of BPF programs in perf.

    perf tool gathers information via sys_bpf and (optionally) stores them in
    perf.data as headers.

    Patch 1/9 fixes a minor issue in kernel;
    Patch 2/9 to 4/9 introduce new helper functions and use them in perf and
    bpftool;
    Patch 5/9 and 6/9 saves information of bpf program in perf_env;
    Patch 7/9 adds --bpf-event options to perf-top;
    Patch 8/9 enables annotation of bpf programs based on information gathered
    in 5/9 and 6/9;
    Patch 9/9 handles information of short living BPF program that are loaded
    during perf-record or perf-top.

    Commands tested during developments are perf-top, perf-record, perf-report,
    and perf-annotate.

    ===================== Note on patch dependency ========================
    This set has dependency in both bpf-next tree and tip/perf/core. Current
    version is developed on bpf-next tree with the following commits
    cherry-picked from tip/perf/core:

    (from 1/10 to 10/10)
    commit 76193a94522f ("perf, bpf: Introduce PERF_RECORD_KSYMBOL")
    commit d764ac646491 ("tools headers uapi: Sync tools/include/uapi/linux/perf_event.h")
    commit 6ee52e2a3fe4 ("perf, bpf: Introduce PERF_RECORD_BPF_EVENT")
    commit df063c83aa2c ("tools headers uapi: Sync tools/include/uapi/linux/perf_event.h")
    commit 9aa0bfa370b2 ("perf tools: Handle PERF_RECORD_KSYMBOL")
    commit 45178a928a4b ("perf tools: Handle PERF_RECORD_BPF_EVENT")
    commit 7b612e291a5a ("perf tools: Synthesize PERF_RECORD_* for loaded BPF programs")
    commit a40b95bcd30c ("perf top: Synthesize BPF events for pre-existing loaded BPF programs")
    commit 6934058d9fb6 ("bpf: Add module name [bpf] to ksymbols for bpf programs")
    commit 811184fb6977 ("perf bpf: Fix synthesized PERF_RECORD_KSYMBOL/BPF_EVENT")
    ========================================================================

    Song Liu (9):
    perf, bpf: consider events with attr.bpf_event as side-band events
    bpf: libbpf: introduce bpf_program__get_prog_info_linear()
    bpf: bpftool: use bpf_program__get_prog_info_linear() in
    prog.c:do_dump()
    perf, bpf: synthesize bpf events with
    bpf_program__get_prog_info_linear()
    perf, bpf: save bpf_prog_info in a rbtree in perf_env
    perf, bpf: save btf in a rbtree in perf_env
    perf-top: add option --bpf-event
    perf, bpf: enable annotation of bpf program
    perf, bpf: save information about short living bpf programs

    kernel/events/core.c | 3 +-
    tools/bpf/bpftool/prog.c | 266 ++++++---------------------
    tools/lib/bpf/libbpf.c | 251 ++++++++++++++++++++++++++
    tools/lib/bpf/libbpf.h | 63 +++++++
    tools/lib/bpf/libbpf.map | 3 +
    tools/perf/Makefile.config | 2 +-
    tools/perf/builtin-record.c | 15 +-
    tools/perf/builtin-top.c | 15 +-
    tools/perf/util/annotate.c | 149 ++++++++++++++-
    tools/perf/util/bpf-event.c | 351 +++++++++++++++++++++++++++---------
    tools/perf/util/bpf-event.h | 48 ++++-
    tools/perf/util/dso.c | 1 +
    tools/perf/util/dso.h | 33 ++--
    tools/perf/util/env.c | 148 +++++++++++++++
    tools/perf/util/env.h | 12 ++
    tools/perf/util/evlist.c | 20 ++
    tools/perf/util/evlist.h | 2 +
    tools/perf/util/header.c | 231 +++++++++++++++++++++++-
    tools/perf/util/header.h | 2 +
    tools/perf/util/symbol.c | 1 +
    20 files changed, 1304 insertions(+), 312 deletions(-)

    --
    2.17.1

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