linux-kernel - [PATCH v3 0/7] perf/probe: Support multiprobe and immediates with fixes

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Date:   Mon, 18 Nov 2019 17:11:40 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-kernel@...r.kernel.org,
        Tom Zanussi <tom.zanussi@...ux.intel.com>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: [PATCH v3 0/7] perf/probe: Support multiprobe and immediates with fixes

Hi Arnaldo,

This is the 3rd version of the multiprobe support on perf probe
including some fixes about "representive lines"

The previous thread is here:

https://lkml.kernel.org/r/157314406866.4063.16995747442215702109.stgit@devnote2

On the previous thread, we discussed some issues about incorrect line
information shown by perf probe. I finally fixed those by introducing
an idea of "representive line" -- a line which has a unique address
(no other lines shares the same address) or a line which has the least
line number among lines sharing same address. Now perf probe only shows
such representive lines can be probed([1/7][3/7]), and if user tries to
probe other non representive lines, it shows which line user should
probe ([2/7]). The rest of patches in the series are same as v2 (except
for [4/7], example output is updated)

This can be applied on top of perf/core.

Thank you,

---

Masami Hiramatsu (7):
      perf probe: Show correct statement line number by perf probe -l
      perf probe: Verify given line is a representive line
      perf probe: Do not show non representive lines by perf-probe -L
      perf probe: Generate event name with line number
      perf probe: Support multiprobe event
      perf probe: Support DW_AT_const_value constant value
      perf probe: Trace a magic number if variable is not found


 tools/perf/util/dwarf-aux.c    |   62 ++++++++++++++++++++-
 tools/perf/util/probe-event.c  |   19 ++++++-
 tools/perf/util/probe-event.h  |    3 +
 tools/perf/util/probe-file.c   |   14 +++++
 tools/perf/util/probe-file.h   |    2 +
 tools/perf/util/probe-finder.c |  116 +++++++++++++++++++++++++++++++++++++++-
 tools/perf/util/probe-finder.h |    1 
 7 files changed, 206 insertions(+), 11 deletions(-)

--
Masami Hiramatsu (Linaro) <mhiramat@...nel.org>