From patchwork Mon Jan 30 18:19:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ross Zwisler X-Patchwork-Id: 13121575 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36961C636CB for ; Mon, 30 Jan 2023 18:19:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237882AbjA3ST4 (ORCPT ); Mon, 30 Jan 2023 13:19:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51444 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237405AbjA3STn (ORCPT ); Mon, 30 Jan 2023 13:19:43 -0500 Received: from mail-il1-x12b.google.com (mail-il1-x12b.google.com [IPv6:2607:f8b0:4864:20::12b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 21A0E3C280 for ; Mon, 30 Jan 2023 10:19:41 -0800 (PST) Received: by mail-il1-x12b.google.com with SMTP id g16so5499319ilr.1 for ; Mon, 30 Jan 2023 10:19:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=CAFjNasnKQN5LUWGdN7AtadW817QQm7F4FvMhjCHwb0=; b=RfZdv5XTG+8uD8qkRBhdwNBF0cK8e8hji8B33Gj95Q6avMrpQVnYUAuUvQ6T7IR8+p MYCxMzFUWeWWkyawSiU0lbQwLFknwHfAQy3hsCbXbZdWrjCG2Tc3YHS7D6WPN1oWkG0f eFMyiUb05xok2QkhaK8jh7WLReqLeYSqv2qpU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=CAFjNasnKQN5LUWGdN7AtadW817QQm7F4FvMhjCHwb0=; b=6PHa9GbthsuZ8VOSLXiJwTMAP+hCi6+OCueAKhQHPZ6DHCMhsltlyTB4CC5NARcVjJ GTCoqAU0P7E5cQCAPUHd1UMHSPQfgnmtkJ56dF4Ww982sFLHy76mEt0xTVYDdOCiD2ck ubeD9+dvHliuHwl1wRob061tiWg1JNmyB78sIp4kSkxch5uflV4XZ4uUgXxR1LKKTKsC KK+cwPWM6SuFNEBjz+Wa/AW4KVoeLQD4wTgpYKhOLqegoTMFF/lEzeznt3ir+YbTKYBS Q1khT4bJ4T1vm6dN6ocBdn6jpADF/BLfuxUQC9ngVqoj23oX6BwA6vE+GEc8LMWRp8IL kA0Q== X-Gm-Message-State: AO0yUKVSGcyiC5MpAp7ZLuGOveexQNy8EAd0wtQiVhFDpQmpZTQT6ZpE iHkUDbyBe9EPbCAjtj+YrRPVrQ== X-Google-Smtp-Source: AK7set+mwFjhaqPt63RqulQxBusxgMUOOgqwMk/p2L94uGQONgxdBYrhcYQqNFbg7qLSnkSytLx+CQ== X-Received: by 2002:a05:6e02:1541:b0:310:c510:780c with SMTP id j1-20020a056e02154100b00310c510780cmr12382570ilu.11.1675102780494; Mon, 30 Jan 2023 10:19:40 -0800 (PST) Received: from ravnica.bld.corp.google.com ([2620:15c:183:200:fc8a:dd2f:5914:df14]) by smtp.gmail.com with ESMTPSA id o16-20020a056e02115000b002f139ba4135sm4189801ill.86.2023.01.30.10.19.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Jan 2023 10:19:40 -0800 (PST) From: Ross Zwisler X-Google-Original-From: Ross Zwisler To: linux-kernel@vger.kernel.org Cc: Ross Zwisler , "Michael S. Tsirkin" , "Tobin C. Harding" , Alexander Shishkin , Alexei Starovoitov , Andrew Morton , Andrii Nakryiko , Arnaldo Carvalho de Melo , Daniel Borkmann , Hao Luo , Huang Rui , Ingo Molnar , Jason Gunthorpe , Jason Wang , Jiri Olsa , John Fastabend , KP Singh , Leon Romanovsky , Mark Rutland , Martin KaFai Lau , Masami Hiramatsu , Mykola Lysenko , Namhyung Kim , Paolo Bonzini , Peter Zijlstra , Shuah Khan , Song Liu , Stanislav Fomichev , Steven Rostedt , Todd E Brandt , Tycho Andersen , Yonghong Song , bpf@vger.kernel.org, kvm@vger.kernel.org, linux-hardening@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-pm@vger.kernel.org, linux-rdma@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH 0/9] use canonical ftrace path whenever possible Date: Mon, 30 Jan 2023 11:19:06 -0700 Message-Id: <20230130181915.1113313-1-zwisler@google.com> X-Mailer: git-send-email 2.39.1.456.gfc5497dd1b-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org The canonical location for the tracefs filesystem is at /sys/kernel/tracing. But, from Documentation/trace/ftrace.rst: Before 4.1, all ftrace tracing control files were within the debugfs file system, which is typically located at /sys/kernel/debug/tracing. For backward compatibility, when mounting the debugfs file system, the tracefs file system will be automatically mounted at: /sys/kernel/debug/tracing There are many places where this older debugfs path is still used in code comments, selftests, examples and tools, so let's update them to avoid confusion. I've broken up the series as best I could by maintainer or directory, and I've only sent people the patches that I think they care about to avoid spamming everyone. Ross Zwisler (9): tracing: always use canonical ftrace path bpf: use canonical ftrace path selftests/bpf: use canonical ftrace path perf docs: use canonical ftrace path tools/power: use canonical ftrace path selftests: use canonical ftrace path tools/virtio: use canonical ftrace path leaking_addresses: also skip canonical ftrace path tools/kvm_stat: use canonical ftrace path include/linux/kernel.h | 2 +- include/linux/tracepoint.h | 4 ++-- include/uapi/linux/bpf.h | 8 ++++---- kernel/trace/Kconfig | 20 +++++++++---------- kernel/trace/kprobe_event_gen_test.c | 2 +- kernel/trace/ring_buffer.c | 2 +- kernel/trace/synth_event_gen_test.c | 2 +- kernel/trace/trace.c | 2 +- samples/bpf/cpustat_kern.c | 4 ++-- samples/bpf/hbm.c | 4 ++-- samples/bpf/ibumad_kern.c | 4 ++-- samples/bpf/lwt_len_hist.sh | 2 +- samples/bpf/offwaketime_kern.c | 2 +- samples/bpf/task_fd_query_user.c | 4 ++-- samples/bpf/test_lwt_bpf.sh | 2 +- samples/bpf/test_overhead_tp_kern.c | 4 ++-- samples/user_events/example.c | 4 ++-- scripts/leaking_addresses.pl | 1 + scripts/tracing/draw_functrace.py | 6 +++--- scripts/tracing/ftrace-bisect.sh | 4 ++-- tools/include/uapi/linux/bpf.h | 8 ++++---- tools/kvm/kvm_stat/kvm_stat | 2 +- tools/lib/api/fs/tracing_path.c | 4 ++-- tools/lib/traceevent/event-parse.c | 8 ++++---- tools/perf/Documentation/perf-list.txt | 2 +- tools/perf/Documentation/perf-script-perl.txt | 2 +- .../perf/Documentation/perf-script-python.txt | 4 ++-- tools/power/pm-graph/sleepgraph.py | 4 ++-- .../x86/amd_pstate_tracer/amd_pstate_trace.py | 4 ++-- .../intel_pstate_tracer.py | 10 +++++----- .../selftests/bpf/get_cgroup_id_user.c | 2 +- .../bpf/prog_tests/kprobe_multi_test.c | 2 +- .../bpf/prog_tests/task_fd_query_tp.c | 2 +- .../bpf/prog_tests/tp_attach_query.c | 2 +- .../selftests/bpf/prog_tests/trace_printk.c | 2 +- .../selftests/bpf/prog_tests/trace_vprintk.c | 2 +- .../selftests/bpf/progs/test_stacktrace_map.c | 2 +- .../selftests/bpf/progs/test_tracepoint.c | 2 +- tools/testing/selftests/bpf/test_ftrace.sh | 2 +- tools/testing/selftests/bpf/test_tunnel.sh | 8 ++++---- tools/testing/selftests/bpf/trace_helpers.c | 4 ++-- .../testing/selftests/user_events/dyn_test.c | 2 +- .../selftests/user_events/ftrace_test.c | 10 +++++----- .../testing/selftests/user_events/perf_test.c | 8 ++++---- tools/testing/selftests/vm/protection_keys.c | 4 ++-- tools/tracing/latency/latency-collector.c | 2 +- tools/virtio/virtio-trace/README | 2 +- tools/virtio/virtio-trace/trace-agent.c | 2 +- 48 files changed, 96 insertions(+), 95 deletions(-) Acked-by: Michael S. Tsirkin