From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 09CCE292912 for ; Thu, 24 Apr 2025 19:58:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745524717; cv=none; b=ZgrTZDBiGnf4t9Ti/2if9AkuHIGmJCZKoy1oydNbtS4hJUjaOYMgLWDNOcb3a23EMaw3IBQrcLmkiju0e5hX8qknHWClL29Fu0UTQgDFyGK91YZyZhdtDODnJqoOWbq9R/mKUSJin+/oR3Yl01H30p7+skQXGcsXbHRQpd6U02s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745524717; c=relaxed/simple; bh=+RY+q+hJwDOImCGmTObp5ZfX3k4NCCjexNpcM/rV9ow=; h=Date:Mime-Version:Message-ID:Subject:From:To:Content-Type; b=Qi5qdzDG1OQuhVOpXm4lA8usriuk/ffImNQAHjEP2rzQEhhrY+rKlkKtgcPlhO3lxcT9IAw7Ja9/rKCw23PMsYvBPkCUS75hiPU5Il7pCT3mx1wbmeZqFay4s+eFnQHU3lZMquFBB8hbjcRZU8A+n8iLocx5oT6y9lFY7yO3SCI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=dgNmfC/G; arc=none smtp.client-ip=209.85.210.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="dgNmfC/G" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-736cd27d51fso1212131b3a.2 for ; Thu, 24 Apr 2025 12:58:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1745524715; x=1746129515; darn=vger.kernel.org; h=to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=q7sNSlEoh3Ww7j5/GpP6XSkW5Nfndqm2bW7+y1NMx1s=; b=dgNmfC/GtTwkMj7e3L8uWrDWZm5J4JoTuXCnLy61dDd6fDxFP58OzwD+d7iofs5iWi tf4au9kQ5Qnpa0n1PcuBxHL7SFdvjy3UhRpNoxzMbVKjYJgGRvPXfjuGgEyhlXdxJV6U ZBm6ZyAePBWx8zrtqOq8poi3Xvh1G07rz7O/MYirj+A3qSy/ealq6fjKUMzMEYbbBXkE SNrkRFOPYvHTFar1dXJ0dy1Jcj54hTOCnbE30CcB8EnY4trI6HAtKEGvTnhWLoSkIyUQ 3rSk8Vuwk0P6EqmMxrTCoN0SErn7mo4dRqh/6eZUSuXWUZEjjR9BbKELmuQfXTMLcR/J TvgQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745524715; x=1746129515; h=to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=q7sNSlEoh3Ww7j5/GpP6XSkW5Nfndqm2bW7+y1NMx1s=; b=wvPIIrbDM9DzEZulxlqOLo1cZSTo/sD0tqjh/iLF8jgmX6GHQhpqfQJoOfz56gxafs IMvJyuayQ5LasKqTsZVO65tnowu6MSNwAZ16mHE7uxcPPlHQ8Afkx2j5GIuAieXgGuKP YuDUAirvihEci7cdtET/m6TUgGC/8qTPUYa4c+MF8Em0kZMETmwGiafSz/wyT0Ej8qLv 0HAbaampJd9Yp+Rtj9DCNehmMZY1OU7k/UbShWJt1UwmHjVDcXjRXNZHe4y+SXTUJOI0 PhFN+MrmTWE2f4efLX6h/fU5eljzQQ4a1UE4AZTpa8wKd6zK85NXxROytlzK5QmkdIDI oi2g== X-Forwarded-Encrypted: i=1; AJvYcCWpU62vAglI3x+w8PiUucBGvcefMfafsPT8N+RCGPuAEehN0mGLECvNfwWM4Z63vFX8CQdwyLkePWSpI+4=@vger.kernel.org X-Gm-Message-State: AOJu0YwMm4LQ6aLbuLlzwLOAyA5Pdi25dTiyoo4d/PkXnlK22suY/25r HGFGDWgs5rOHAZVWTVx2MZETLp0nZczE3Zk00q+AivaoUqdFh4o8tpQvlhJtlfskJKcjb+JywmZ x/VzEqw== X-Google-Smtp-Source: AGHT+IFawFJI77cbJR22Buh8Gc3QU2W5Qpl5CiCQ8mIfHNOGIgryv+Il5hJbbZUqB7zx7RlHuHa2w3a4hR1q X-Received: from pffk9.prod.google.com ([2002:aa7:88c9:0:b0:732:20df:303c]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:a86:b0:736:32d2:aa82 with SMTP id d2e1a72fcca58-73e330c8b69mr1115793b3a.23.1745524715146; Thu, 24 Apr 2025 12:58:35 -0700 (PDT) Date: Thu, 24 Apr 2025 12:58:23 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.49.0.850.g28803427d3-goog Message-ID: <20250424195831.1767457-1-irogers@google.com> Subject: [PATCH v2 0/8] perf: Default use of build IDs and improvements From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , Athira Rajeev , Kajol Jain , Li Huafei , "Steinar H. Gunderson" , James Clark , Stephen Brennan , Andi Kleen , Dmitry Vyukov , Zhongqiu Han , Yicong Yang , "=?UTF-8?q?Krzysztof=20=C5=81opatowski?=" , "Dr. David Alan Gilbert" , Zixian Cai , Steve Clevenger , Thomas Falcon , Martin Liska , "=?UTF-8?q?Martin=20Li=C5=A1ka?=" , Song Liu , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Build ID mmap2 events have been available since Linux v5.12 and avoid certain races. Enable these by default as discussed in: https://lore.kernel.org/linux-perf-users/CAP-5=fXP7jN_QrGUcd55_QH5J-Y-FCaJ6=NaHVtyx0oyNh8_-Q@mail.gmail.com/ The dso_id is used to indentify a DSO that may change by being overwritten. The inode generation isn't present in /proc/pid/maps and so was already only optionally filled in. With build ID mmap events the other major, minor and inode varialbes aren't filled in. Change the dso_id implementation to make optional values explicit, rather than injecting a dso_id we want to improve it during find operations, add the buildid to the dso_id for sorting and so that matching fails when build IDs vary between DSOs. Mark the callchain for buildids and not just the sample IP, fixing missing DSOs. Fix sample__for_each_callchain_node to populate the map even when symbols aren't computed. Other minor bits of build_id clean up. v2: Make marking DSOs still the default even with the defaulted build ID mmap. The command line option still disables this to avoid regressions. Add callchain patches and jitdump fix. Ian Rogers (8): perf callchain: Always populate the addr_location map when adding IP perf jitdump: Directly mark the jitdump DSO perf build-id: Reduce size of "size" variable perf build-id: Truncate to avoid overflowing the build_id data perf build-id: Change sprintf functions to snprintf perf build-id: Mark DSO in sample callchains perf dso: Move build_id to dso_id perf record: Make --buildid-mmap the default tools/perf/builtin-buildid-cache.c | 12 +- tools/perf/builtin-buildid-list.c | 6 +- tools/perf/builtin-inject.c | 32 ++--- tools/perf/builtin-record.c | 33 ++++-- tools/perf/builtin-report.c | 11 +- tools/perf/include/perf/perf_dlfilter.h | 2 +- tools/perf/tests/symbols.c | 4 +- tools/perf/util/build-id.c | 57 +++++---- tools/perf/util/build-id.h | 8 +- tools/perf/util/disasm.c | 2 +- tools/perf/util/dso.c | 111 ++++++++++-------- tools/perf/util/dso.h | 75 ++++++------ tools/perf/util/dsos.c | 20 ++-- tools/perf/util/event.c | 2 +- tools/perf/util/header.c | 2 +- tools/perf/util/jitdump.c | 21 +++- tools/perf/util/machine.c | 34 +++--- tools/perf/util/map.c | 15 ++- tools/perf/util/map.h | 5 +- tools/perf/util/probe-file.c | 4 +- .../scripting-engines/trace-event-python.c | 7 +- tools/perf/util/sort.c | 27 +++-- tools/perf/util/symbol.c | 2 +- tools/perf/util/symbol_conf.h | 2 +- tools/perf/util/synthetic-events.c | 42 ++++--- tools/perf/util/thread.c | 8 +- tools/perf/util/thread.h | 2 +- 27 files changed, 314 insertions(+), 232 deletions(-) -- 2.49.0.850.g28803427d3-goog