From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 E7CF51388 for ; Wed, 4 Jun 2025 17:45:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749059161; cv=none; b=A9gMVz79JRco6aPoWPRLqhIs/+XEwp4pSYVHBMKh5D7sY0jnQhqOx0MdroHTnwZ8L9v7CvnRCvnHLo22OJfUBrJy4JIe+pQWtuPpj18p86OQbsTvwlfEouLyhylfdHPIuBS3Uctg6rliWepV08+hEcN6gKiVkpWSihIlvcFmlu0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749059161; c=relaxed/simple; bh=qOvvciBxwW1inYl/V0OhUBXDZSpSnXUyvZeA1lLf+PY=; h=Date:Mime-Version:Message-ID:Subject:From:To:Content-Type; b=oqs/C+5Ueaf1h3tzwvwyeVT+dqC915fTF9e8jQ+atGsLkTeowzWx7Sg2pfw867fP0eWp7LkBKJze2E/UQU91jphmdrU69ukm/UmEDcRIsblf4vP8jRpyKzBgwd7lzFD4uF373dbMZ1PE1uVgQAIUVh3OGRvjnw0QFxnDBH9ey64= 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=IP5s7DrQ; arc=none smtp.client-ip=209.85.214.202 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="IP5s7DrQ" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-22aa75e6653so661155ad.0 for ; Wed, 04 Jun 2025 10:45:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1749059158; x=1749663958; darn=vger.kernel.org; h=to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=H9QaFBLjYOuvDC3/QdBACigYzXP7h80yd3aL1h2SKHY=; b=IP5s7DrQ5gCmLTbQKKFmV08a4EzdoWrocsjkf7e9ucNGkc3W7PZtmlGy+aSCgvvatc T8jexCRtPqp4S5e7bRyAzEPT5wkxIV7ODt9OWREhQaGvUOojyRPVOkvOv1ssPITEvPdY /fWh8FSv/t6oELZSU5qVz1MD2vGbm9b1we0042lRYCBm0OjqehSBOkxKz3SzGfYT4gmP cch4QqF3QIsGQIjOq4IowkK7K4EQ8PUDH/u3ZgyoVTLaWP7gnYFd6l09iAMDY8XQ27kp CIVQRmglF9MKrf9zXihBY7OCLtoVDI+L2G3ucAZxru1v1pVFYDMzHr9d3eOlBbQlb3jJ B23Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749059158; x=1749663958; h=to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=H9QaFBLjYOuvDC3/QdBACigYzXP7h80yd3aL1h2SKHY=; b=JDmGlP7predP+apa+Vah3VOYBhahKBtGgAPnpCZPkYerBey+iHpmn57FkpIQS+eWst KLSHieSUWKHE71SuApPF1LZUtCd0jM6LlyH/8WiFn8+1s8Enltq0081r3q3KvrtZxbOB jK+3VfXLYpGN9sCYcfmnaqa/FtNOqS99kaIT7kKvlrBy+hYSzF5uhfZwghos08SjHCL8 ts7mCoZ3atSIzYWRPzDbxriU8JhAdIfOVgujgrkoGZtBB5k+Omdrk6OyB0qEvLbhwVY8 kD/eqjVDSl736YcHj6u+DpwGDxd6fasAd1kAkDJz1fx0j1aV6kybYO8TTThYv1l3mkma rxsw== X-Forwarded-Encrypted: i=1; AJvYcCVRb7Lh5f+HXkn4PtGTiMHYwsi3tK9QY7MCfKwKSeCosJvJFMO4OsryOQXdA1MU+zu/k98GK8mG8KeD/RA=@vger.kernel.org X-Gm-Message-State: AOJu0Yw2hwq/ZOlgnw9zWi1qMhVm13wbxQAeAHXS1/DuM40NbEJiy/Vm CZwoOKkB5E/O/jCbCwrF+ht7IBO4L9zG3IkC9xHbdDTFChzm2s3in+tzD3bayXm7X0TUT101/U6 opo3OSOmWgQ== X-Google-Smtp-Source: AGHT+IEDlB53AvhsCJwecps6nf/89lwn6FIydGbmAws37kN03WJuqK9+Jo0wPuncznBgMWyX+Lpa1rROiB2b X-Received: from plgc13.prod.google.com ([2002:a17:902:d48d:b0:234:9673:1d13]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:ce8e:b0:21a:8300:b9d5 with SMTP id d9443c01a7336-235e114f0e6mr51959625ad.23.1749059158178; Wed, 04 Jun 2025 10:45:58 -0700 (PDT) Date: Wed, 4 Jun 2025 10:45:34 -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 2.50.0.rc0.604.gd4ff7b7c86-goog Message-ID: <20250604174545.2853620-1-irogers@google.com> Subject: [PATCH v4 00/10] Move uid filtering to BPF filters 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 , James Clark , Dapeng Mi , Thomas Richter , Veronika Molnarova , Chun-Tse Shao , Leo Yan , Hao Ge , Howard Chu , Weilin Wang , Levi Yun , "Dr. David Alan Gilbert" , Gautam Menghani , Tengda Wu , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Rather than scanning /proc and skipping PIDs based on their UIDs, use BPF filters for uid filtering. The /proc scanning in thread_map is racy as the PID may exit before the perf_event_open causing perf to abort. BPF UID filters are more robust as they avoid the race. The /proc scanning also misses processes starting after the perf command. Add a helper for commands that support UID filtering and wire up. Remove the non-BPF UID filtering support given it doesn't work. v4: Add a warning message on top of Namhyung's BPF filter error message: https://lore.kernel.org/lkml/20250604054234.23608-1-namhyung@kernel.org/ in the parse_uid_filter helper. In TUI the warning is shown then the BPF error shown, with stdio the warning appears below the BPF errors. v3: Add lengthier commit messages as requested by Arnaldo. Rebase on tmp.perf-tools-next. v2: Add a perf record uid test (Namhyung) and force setting system-wide for perf trace and perf record (Namhyung). Ensure the uid filter isn't set on tracepoint evsels. v1: https://lore.kernel.org/lkml/20250111190143.1029906-1-irogers@google.com/ Ian Rogers (10): perf parse-events filter: Use evsel__find_pmu perf target: Separate parse_uid into its own function perf parse-events: Add parse_uid_filter helper perf record: Switch user option to use BPF filter perf tests record: Add basic uid filtering test perf top: Switch user option to use BPF filter perf trace: Switch user option to use BPF filter perf bench evlist-open-close: Switch user option to use BPF filter perf target: Remove uid from target perf thread_map: Remove uid options tools/perf/bench/evlist-open-close.c | 36 ++++++++------ tools/perf/builtin-ftrace.c | 1 - tools/perf/builtin-kvm.c | 2 - tools/perf/builtin-record.c | 27 ++++++----- tools/perf/builtin-stat.c | 4 +- tools/perf/builtin-top.c | 22 +++++---- tools/perf/builtin-trace.c | 27 +++++++---- tools/perf/tests/backward-ring-buffer.c | 1 - tools/perf/tests/event-times.c | 8 ++- tools/perf/tests/keep-tracking.c | 2 +- tools/perf/tests/mmap-basic.c | 2 +- tools/perf/tests/openat-syscall-all-cpus.c | 2 +- tools/perf/tests/openat-syscall-tp-fields.c | 1 - tools/perf/tests/openat-syscall.c | 2 +- tools/perf/tests/perf-record.c | 1 - tools/perf/tests/perf-time-to-tsc.c | 2 +- tools/perf/tests/shell/record.sh | 26 ++++++++++ tools/perf/tests/switch-tracking.c | 2 +- tools/perf/tests/task-exit.c | 1 - tools/perf/tests/thread-map.c | 2 +- tools/perf/util/bpf-filter.c | 2 +- tools/perf/util/evlist.c | 3 +- tools/perf/util/parse-events.c | 47 +++++++++++++----- tools/perf/util/parse-events.h | 1 + tools/perf/util/python.c | 10 ++-- tools/perf/util/target.c | 54 +++------------------ tools/perf/util/target.h | 15 ++---- tools/perf/util/thread_map.c | 32 ++---------- tools/perf/util/thread_map.h | 6 +-- tools/perf/util/top.c | 4 +- tools/perf/util/top.h | 1 + 31 files changed, 164 insertions(+), 182 deletions(-) -- 2.50.0.rc0.604.gd4ff7b7c86-goog