[RFC PATCH 0/2] perf tools: Print bpf-output events in 'perf script'

[Wang Nan <wangnan0@huawei.com>]

Hi Arnaldo and Jiri,

   Glad to see the progress we made today.

   Before you trying libbaleltrace, please consider these two patches,
which allows print BPF output data directly through 'perf script'.
I think it would be useful for people don't have libbabeltrace ready.
With these two patch they can write scripts by their own:

 # ./perf script
          usleep  4882 21384.532523:                       evt:  ffffffff810e97d1 sys_nanosleep ([kernel.kallsyms])
      BPF output: 0000: 52 61 69 73 65 20 61 20  Raise a
                  0008: 42 50 46 20 65 76 65 6e  BPF even
                  0010: 74 21 00 00              t!..
      BPF string: "Raise a BPF event!"

          usleep  4882 21384.632606:                       evt:  ffffffff8105c609 kretprobe_trampoline_holder ([kernel.kallsyms
      BPF output: 0000: 52 61 69 73 65 20 61 20  Raise a
                  0008: 42 50 46 20 65 76 65 6e  BPF even
                  0010: 74 21 00 00              t!..
      BPF string: "Raise a BPF event!"

Thank you.

Wang Nan (2):
  perf tools: Make binary data printer code in trace_event public
    available
  perf script: Print bpf-output events in 'perf script'

 tools/perf/builtin-script.c | 93 ++++++++++++++++++++++++++++++++++++++++++---
 tools/perf/util/debug.c     | 75 +++++++++++++++++++++++-------------
 tools/perf/util/util.c      | 37 ++++++++++++++++++
 tools/perf/util/util.h      | 20 ++++++++++
 4 files changed, 193 insertions(+), 32 deletions(-)

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: pi3orama@163.com

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