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: 13121579 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 B835AC636D4 for ; Mon, 30 Jan 2023 18:19:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237846AbjA3ST6 (ORCPT ); Mon, 30 Jan 2023 13:19:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237508AbjA3STn (ORCPT ); Mon, 30 Jan 2023 13:19:43 -0500 Received: from mail-il1-x131.google.com (mail-il1-x131.google.com [IPv6:2607:f8b0:4864:20::131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 207D538E81 for ; Mon, 30 Jan 2023 10:19:41 -0800 (PST) Received: by mail-il1-x131.google.com with SMTP id i6so1619083ilq.8 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=bPVHQZUDIHy2kaeCp02Pfy9aqMxGzx5IQrB0PR6JWVLYuKX3hVOTeti8E0UeC3ei8l 4hVN4nnzAPq3EjWJK8mJTM3g3PBcWBqEojotckUIJqoJK7T0ak2WGbozi4c77xZ7jocG 2A3rg0j4w81eF/ErVNRJw3GJrCYS4knBAqoHvaKvf1NUq4dQkhiZ0MbxyCGEweKTnIoP 9L9kQcnw5Vs4yml1OK3MEL/PXCIsD7/0buCQB8s5c5aSoUJxt1U638M9qtijgMJ5pK+J 4BmqpkwSD33ZiYBzIbQvYcW+VLsEm7emGGbiwur0msFBmFrVT4j9cW0mozoS5lCsrvd8 6KlQ== X-Gm-Message-State: AO0yUKWFVw+qnaTtoqjlSIT22HvD3ilV/O1qSuo3Q5ZZHaET8kQtJS2l yvpmjdah3nXoEviTG4ujninxeg== 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: kvm@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