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

From: Masami Hiramatsu
Date: Mon Nov 18 2019 - 03:11:47 EST


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@xxxxxxxxxx>