linux-kernel - [PATCHSET 0/9] perf annotate: More memory footprint reduction

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Date: Thu,  4 Apr 2024 10:57:07 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org
Subject: [PATCHSET 0/9] perf annotate: More memory footprint reduction

Hello,

This work is continuation of the previous work to reduce the memory
usage in symbol and annotation structures.  Basically I moved some
fields in the annotation which consume spaces in the struct symbol
which is allocated regardless if the symbol has a sample or not when
annotation is enabled.

With this change applied, the struct annotation only has two members -
annotated_source and annotated_branch.  The next step would be to
remove the struct annotation and to have a hash table from symbol to
each annotated struct directly.

No function changes intended.

The code is available at perf/annotate-diet-v3 branch in

  git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git

Thanks,
Namhyung


Namhyung Kim (9):
  perf annotate: Fix annotation_calc_lines()
  perf annotate: Staticize some local functions
  perf annotate: Introduce annotated_source__get_line()
  perf annotate: Check annotation lines more efficiently
  perf annotate: Get rid of offsets array
  perf annotate: Move widths struct to annotated_source
  perf annotate: Move max_jump_sources struct to annotated_source
  perf annotate: Move nr_events struct to annotated_source
  perf annotate: Move start field struct to annotated_source

 tools/perf/ui/browsers/annotate.c |  15 ++-
 tools/perf/util/annotate.c        | 174 +++++++++++++++++-------------
 tools/perf/util/annotate.h        |  39 +++----
 3 files changed, 123 insertions(+), 105 deletions(-)


base-commit: b6347cb5e04e9c1d17342ab46e2ace2d448de727
-- 
2.44.0.478.gd926399ef9-goog