linux-kernel - [PATCH v1 00/13] perf inject improvements

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240817064442.2152089-1-irogers@google.com>
Date: Fri, 16 Aug 2024 23:44:29 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, Masahiro Yamada <masahiroy@...nel.org>, 
	Arnd Bergmann <arnd@...db.de>, Jann Horn <jannh@...gle.com>, 
	Colin Ian King <colin.i.king@...il.com>, Casey Chen <cachen@...estorage.com>, 
	Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, 
	Chaitanya S Prakash <chaitanyas.prakash@....com>, James Clark <james.clark@...aro.org>, 
	Ze Gao <zegao2021@...il.com>, Yang Jihong <yangjihong1@...wei.com>, 
	Yunseong Kim <yskelg@...il.com>, Weilin Wang <weilin.wang@...el.com>, 
	Dominique Martinet <asmadeus@...ewreck.org>, Anne Macedo <retpolanne@...teo.net>, 
	Sun Haiyong <sunhaiyong@...ngson.cn>, linux-perf-users@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 00/13] perf inject improvements

Fix the existing build id injection by adding sample IDs on to the
synthesized events. This correctly orders the events and addresses
issues such as a profiled executable being replaced during its
execution.

Add a new --mmap2-buildid-all option that rewrites all mmap events as
mmap2 events containing build IDs. This removes the need for build_id
events.

Add a new -B option that like --mmap2-buildid-all synthesizes mmap2
with build id events. With -B the behavior is to do it lazily, so only
when a sample references the particular map. With system wide
profiling that synthesizes mmap events for all running processes the
perf.data file savings can be greater than 50%.

Reduce the memory footprint of perf inject by avoiding creating
symbols in the callchain, the symbols aren't used during perf inject
and necessitate the loading of dsos.

Ian Rogers (13):
  perf synthetic-events: Avoid unnecessary memset
  perf map: API clean up
  perf jit: Constify filename argument
  perf dso: Constify dso_id
  perf evsel: Constify evsel__id_hdr_size argument
  perf test: Expand pipe/inject test
  perf inject: Combine build_ids and build_id_all into enum
  perf inject: Combine different mmap and mmap2 functions
  perf inject: Combine mmap and mmap2 handling
  perf inject: Fix build ID injection
  perf inject: Add new mmap2-buildid-all option
  perf inject: Lazy build-id mmap2 event insertion
  perf callchain: Allow symbols to be optional when resolving a
    callchain

 tools/perf/builtin-inject.c         | 532 ++++++++++++++++++----------
 tools/perf/builtin-top.c            |   2 +-
 tools/perf/tests/shell/pipe_test.sh | 103 ++++--
 tools/perf/tests/vmlinux-kallsyms.c |   4 +-
 tools/perf/util/build-id.c          |   6 +-
 tools/perf/util/callchain.c         |   8 +-
 tools/perf/util/callchain.h         |   2 +-
 tools/perf/util/dso.c               |   4 +-
 tools/perf/util/dso.h               |   4 +-
 tools/perf/util/dsos.c              |  12 +-
 tools/perf/util/dsos.h              |   2 +-
 tools/perf/util/evsel.c             |   2 +-
 tools/perf/util/evsel.h             |   2 +-
 tools/perf/util/jit.h               |   3 +-
 tools/perf/util/jitdump.c           |   6 +-
 tools/perf/util/machine.c           |  95 ++---
 tools/perf/util/machine.h           |  36 +-
 tools/perf/util/map.c               |  25 +-
 tools/perf/util/map.h               |  22 +-
 tools/perf/util/synthetic-events.c  | 103 +++++-
 tools/perf/util/synthetic-events.h  |  21 +-
 21 files changed, 682 insertions(+), 312 deletions(-)

-- 
2.46.0.184.g6999bdac58-goog