From patchwork Wed Feb 15 22:33:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ross Zwisler X-Patchwork-Id: 13142273 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF5C4C636D6 for ; Wed, 15 Feb 2023 22:34:01 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5CF3B6B0071; Wed, 15 Feb 2023 17:34:01 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 57EBD6B0072; Wed, 15 Feb 2023 17:34:01 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 41FEF6B0073; Wed, 15 Feb 2023 17:34:01 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 311956B0071 for ; Wed, 15 Feb 2023 17:34:01 -0500 (EST) Received: from smtpin27.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id E4065AB15F for ; Wed, 15 Feb 2023 22:34:00 +0000 (UTC) X-FDA: 80470980240.27.AF4FB41 Received: from mail-il1-f179.google.com (mail-il1-f179.google.com [209.85.166.179]) by imf08.hostedemail.com (Postfix) with ESMTP id 0ECCC160003 for ; Wed, 15 Feb 2023 22:33:58 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b="N/nnLNCl"; dmarc=pass (policy=none) header.from=chromium.org; spf=pass (imf08.hostedemail.com: domain of zwisler@chromium.org designates 209.85.166.179 as permitted sender) smtp.mailfrom=zwisler@chromium.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1676500439; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:references:dkim-signature; bh=onPboIVuwFQM+u11FAIAIUF6FsX292G7WEiPOTqQPg8=; b=5cj8Qd32IV0txDTgWolfFaP3/HwGrPh3KG0ojcTxeQnl30hhd9AgSC8yHJOc6rowKbzbgl Gp3LUgt8mm3Vv92Liijm/U1M6BI+BTpZdCsW5gJCgCJwHjuKoi2ClB8VfHkfHgU178ri0k +tHNWhp/HFYKg3Xg2ELRv6uM97b3Gsc= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b="N/nnLNCl"; dmarc=pass (policy=none) header.from=chromium.org; spf=pass (imf08.hostedemail.com: domain of zwisler@chromium.org designates 209.85.166.179 as permitted sender) smtp.mailfrom=zwisler@chromium.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1676500439; a=rsa-sha256; cv=none; b=198jwEv8Tjt+KHBQWaxEf36R7Lj9c9D23yL7by7k06+hzbo+4yKhjrDXvHw+3DOZUd++YI sEYy8ErgU2pCsvZ1pQDmS/ENSPCKP/mdkQ/7NsAt33kZ9F8DNv/IaABB+sB8Z6Og3pxH40 Rt+FO/Ux96YLdMazq//kF64Zkj97+oQ= Received: by mail-il1-f179.google.com with SMTP id t7so179240ilq.2 for ; Wed, 15 Feb 2023 14:33:58 -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=onPboIVuwFQM+u11FAIAIUF6FsX292G7WEiPOTqQPg8=; b=N/nnLNCloXEfghvTNAXw+I6rZ21KJHDzNBWYN1//+agMoDmkc4p2uF5tGKWwVYGWnv wEqyDErcLL+IQCmktHXDkEEa9CFd3WXlYLeAnXmWRus0ztYASmQctA99YmsCYrsFabbC ViuxzH6SA3drPTIGVbzUJEMGqhtF+LCznfCg8= 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=onPboIVuwFQM+u11FAIAIUF6FsX292G7WEiPOTqQPg8=; b=FPi57POkBjmcmKtF/1/wV928h5NkMfGgxPLT/E9wK0bvA7qGSSjGB+VbU5axv3QNpl Q4fhhrmqGnSllRq0QnNBdbWdp4BJFpoRF6wpLMnAEDC4Qkb6OiMgQFqAdMqnjoKCDRnT kcKDVbdxy75zOVKThhwuzR/mTa/Zt6cSWwc2uR8NGLx+QNKj+e3lhN03kR+Es0UJxjg7 rlMu6f3TnMms4umsA5lo57LQfL6pnvgeBHPDcHiVw31AJ4NAXmyfmpvymn82xzvn/Zte xT1Ni/Lr0zo+38kvwYpQ6CTt0RTmpy7kmRU4m5p4nQA+B5ZOXDDOJDnRWrdU3HlXIU6S hGKg== X-Gm-Message-State: AO0yUKW7Lym+8f6TNHxJzdSAy3yf1mf9TkwaEYdwfsGK+a6af8K/IjmR b9xrxgZNdK33GUqK4xaFlNkYSQ== X-Google-Smtp-Source: AK7set9iJvaog96LALhe884wzN0xuXErl0FzajFZhkV85AuS0ZFd+QdHTbYidcus7alXRIzwIWNnJw== X-Received: by 2002:a05:6e02:1d17:b0:315:4f67:7055 with SMTP id i23-20020a056e021d1700b003154f677055mr4026600ila.1.1676500438087; Wed, 15 Feb 2023 14:33:58 -0800 (PST) Received: from ravnica.bld.corp.google.com ([2620:15c:183:200:6299:179b:a6e4:be59]) by smtp.gmail.com with ESMTPSA id b15-20020a92c14f000000b003141eddd283sm1131489ilh.22.2023.02.15.14.33.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Feb 2023 14:33:57 -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" , Andrew Morton , Jason Wang , Masami Hiramatsu , Paolo Bonzini , Shuah Khan , Tycho Andersen , kvm@vger.kernel.org, linux-hardening@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, virtualization@lists.linux-foundation.org, linux-trace-kernel@vger.kernel.org, Steven Rostedt Subject: [PATCH v2 0/6] use canonical ftrace path whenever possible Date: Wed, 15 Feb 2023 15:33:44 -0700 Message-Id: <20230215223350.2658616-1-zwisler@google.com> X-Mailer: git-send-email 2.39.1.637.g21b0678d19-goog MIME-Version: 1.0 X-Rspamd-Queue-Id: 0ECCC160003 X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: 7nx1oe5pd5qunxqqkns98cub5adjj4gn X-HE-Tag: 1676500438-289909 X-HE-Meta: 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 oJDN2Ruo AWAuwS4SWPF4SEZv9PhegclWquIyOupwFceGDK+p65WL58SV1cdGHz4wb8StLHz1sgh9JwSrZOZ4X5En+Lna1Gf3lUYzXBBRonOljdq3P3sgxCkICN2Gkxej6pggM0PUfSg7vTKfnmaJT0jzZoIV8iSYJSzzdTUZ6IscJ37/jmkzTDmL1S2c78FW+RDZOrzLEUpSC6qV64be2ZsFUezhmyRChLZmjyRwMhciO6A1ODaPs8fcMxSsN8I/7pqIUb57ffQy5pPIiTPYn7xfo4dNbqLXxLVT1drIsfS9RriWIx3czzq0SE8zoaeayFIGNPTFdpzjFKb+InV8172I= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Changes in v2: * Dropped patches which were pulled into maintainer trees. * Split BPF patches out into another series targeting bpf-next. * trace-agent now falls back to debugfs if tracefs isn't present. * Added Acked-by from mst@redhat.com to series. * Added a typo fixup for the virtio-trace README. Steven, assuming there are no objections, would you feel comfortable taking this series through your tree? Acked-by: Michael S. Tsirkin Reviewed-by: Steven Rostedt (Google) Acked-by: Michael S. Tsirkin --- 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 (6): tracing: always use canonical ftrace path selftests: use canonical ftrace path leaking_addresses: also skip canonical ftrace path tools/kvm_stat: use canonical ftrace path tools/virtio: use canonical ftrace path tools/virtio: fix typo in README instructions include/linux/kernel.h | 2 +- include/linux/tracepoint.h | 4 ++-- 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/user_events/example.c | 4 ++-- scripts/leaking_addresses.pl | 1 + scripts/tracing/draw_functrace.py | 6 +++--- tools/kvm/kvm_stat/kvm_stat | 2 +- tools/lib/api/fs/tracing_path.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 | 4 ++-- tools/virtio/virtio-trace/trace-agent.c | 12 +++++++---- 19 files changed, 49 insertions(+), 44 deletions(-)