linux-kernel - [PATCH v2 perf,bpf 0/3] reveal invisible bpf programs

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Message-ID: <20181204195355.4079788-1-songliubraving@fb.com>
Date:   Tue, 4 Dec 2018 11:53:52 -0800
From:   Song Liu <songliubraving@...com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
CC:     Song Liu <songliubraving@...com>, <acme@...nel.org>,
        <ast@...nel.org>, <daniel@...earbox.net>, <kernel-team@...com>,
        <peterz@...radead.org>
Subject: [PATCH v2 perf,bpf 0/3] reveal invisible bpf programs

Changes v2 -> PATCH v1:
1. Only 3 of the 5 patches in v1, to focus on ABI first;
2. Generate PERF_RECORD_BPF_EVENT per bpf sub program instead of per prog;
3. Modify PERF_RECORD_BPF_EVENT with more details (addr, len, name),
   so that it can be used for basic profiling without calling sys_bpf.

Changes RFC -> PATCH v1:
1. In perf-record, poll vip events in a separate thread;
2. Add tag to bpf prog name;
3. Small refactorings.

This is to follow up Alexei's early effort to show bpf programs

   https://www.spinics.net/lists/netdev/msg524232.html

In this version, PERF_RECORD_BPF_EVENT is introduced to send real time BPF
load/unload events to user space.

Thanks,
Song

Song Liu (3):
  perf, bpf: Introduce PERF_RECORD_BPF_EVENT
  perf: sync tools/include/uapi/linux/perf_event.h
  perf util: basic handling of PERF_RECORD_BPF_EVENT

 include/linux/filter.h                |   1 +
 include/linux/perf_event.h            |  10 +++
 include/uapi/linux/perf_event.h       |  35 +++++++-
 kernel/bpf/core.c                     |   2 +-
 kernel/bpf/syscall.c                  |   3 +
 kernel/events/core.c                  | 123 +++++++++++++++++++++++++-
 tools/include/uapi/linux/perf_event.h |  35 +++++++-
 tools/perf/util/event.c               |  22 +++++
 tools/perf/util/event.h               |  26 ++++++
 tools/perf/util/evsel.c               |   1 +
 tools/perf/util/machine.c             |  10 +++
 tools/perf/util/machine.h             |   2 +
 tools/perf/util/session.c             |   4 +
 tools/perf/util/tool.h                |   4 +-
 14 files changed, 273 insertions(+), 5 deletions(-)

--
2.17.1