linux-kernel - [PATCH v3 0/3] Support .gnu_debugdata for symbols in perf

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Message-ID: <20250307232206.2102440-1-stephen.s.brennan@oracle.com>
Date: Fri,  7 Mar 2025 15:22:00 -0800
From: Stephen Brennan <stephen.s.brennan@...cle.com>
To: Namhyung Kim <namhyung@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>
Cc: Mark Rutland <mark.rutland@....com>,
        "Liang, Kan" <kan.liang@...ux.intel.com>,
        linux-perf-users@...r.kernel.org, James Clark <james.clark@...aro.org>,
        Stephen Brennan <stephen.s.brennan@...cle.com>,
        Ian Rogers <irogers@...gle.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Chaitanya S Prakash <chaitanyas.prakash@....com>,
        linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>
Subject: [PATCH v3 0/3] Support .gnu_debugdata for symbols in perf

Hello all,

This series adds the ability to read symbols from the ".gnu_debugdata" section
of DSOs. More details are the cover letter of v1. This only has one small change
from v2: it adds the missing entry in dso__symtab_origin(). Its lack resulted in
truncating the output of symbols in "perf report -v" -- thanks to Arnaldo for
testing and catching that.

v2: https://lore.kernel.org/linux-perf-users/20250220185512.3357820-1-stephen.s.brennan@oracle.com/
v1: https://lore.kernel.org/linux-perf-users/20250213190542.3249050-1-stephen.s.brennan@oracle.com/

Stephen Brennan (3):
  tools: perf: add dummy functions for !HAVE_LZMA_SUPPORT
  tools: perf: add LZMA decompression from FILE
  tools: perf: support .gnu_debugdata for symbols

 tools/perf/util/compress.h   |  20 +++++++
 tools/perf/util/dso.c        |   3 +
 tools/perf/util/dso.h        |   1 +
 tools/perf/util/lzma.c       |  29 ++++++----
 tools/perf/util/symbol-elf.c | 106 ++++++++++++++++++++++++++++++++++-
 tools/perf/util/symbol.c     |   2 +
 6 files changed, 148 insertions(+), 13 deletions(-)

-- 
2.43.5