From mboxrd@z Thu Jan 1 00:00:00 1970 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 0E9EBC64EC4 for ; Fri, 10 Mar 2023 08:30:08 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5AC266B0072; Fri, 10 Mar 2023 03:30:08 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 55C46280001; Fri, 10 Mar 2023 03:30:08 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3FD086B0075; Fri, 10 Mar 2023 03:30:08 -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 2E15C6B0072 for ; Fri, 10 Mar 2023 03:30:08 -0500 (EST) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id D40831A1607 for ; Fri, 10 Mar 2023 08:30:07 +0000 (UTC) X-FDA: 80552316054.10.F45A8AD Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by imf27.hostedemail.com (Postfix) with ESMTP id BD4A840018 for ; Fri, 10 Mar 2023 08:30:05 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=KPp2j1lu; spf=pass (imf27.hostedemail.com: domain of mst@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=mst@redhat.com; dmarc=pass (policy=none) header.from=redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1678437005; 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-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=0VVY8kly3TcDFN9v8u5UAZIFaG8NcKB7KdRar2p0UPo=; b=VbbEHheRRjAxIw6rNRVVD8Nx/HYjg3+Ae4Zv/V6di4SCLItEF/zOWHd928LdTpO9f5j2z0 hFKHPO1CoconwPR8yFPirWHmM9mkbwleA7prQbBJX48IlkVAlVDFRr2an9RNG6gbq3naYN 9AP3tdmdc3J0b+2O/ich2ohjNctDwVs= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=KPp2j1lu; spf=pass (imf27.hostedemail.com: domain of mst@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=mst@redhat.com; dmarc=pass (policy=none) header.from=redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1678437005; a=rsa-sha256; cv=none; b=oyMWJ3dzsi1loTDNO/I1n6kepx+e/co8FrTGKZONuVNnjDW4ulxS8ZiYuoFtOUPA58CPOG 9HfIR4FCzz644IfOVSAqQIvZk1GWldOSO+FWDnYD5y410KNnXDkDqzA6tQGAP0+rzNvJZP f+wUlRG6OmO3+wIFkuw8lUXmqqH5Sxs= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678437005; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=0VVY8kly3TcDFN9v8u5UAZIFaG8NcKB7KdRar2p0UPo=; b=KPp2j1lu/NwA1XT0QdZTNcVTRbhfoYIr5o2rLJzMFcy079FhRH9Gd1funwY7FL7oDMUTMo ATgXIc4C8gc6DTG3qPNYRf3IEKa1tmIzY1ZKrMxDym+OZd0RnP6uWT1NdNnUr0XTZsSlGE kRzvhom/slLBc4BfE2p30wxxA6V9txM= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-386-OInUSJu7M7GSoEuBcu-sHA-1; Fri, 10 Mar 2023 03:29:56 -0500 X-MC-Unique: OInUSJu7M7GSoEuBcu-sHA-1 Received: by mail-wm1-f70.google.com with SMTP id t1-20020a7bc3c1000000b003dfe223de49so3539028wmj.5 for ; Fri, 10 Mar 2023 00:29:55 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678436995; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=0VVY8kly3TcDFN9v8u5UAZIFaG8NcKB7KdRar2p0UPo=; b=aHP+NLN5AZuVwI+xojQh/A3Fq7sW669kLik01Ru8Xho4JLPSP2N8b514mCiEFvXS8A mZm7AownWGUfblmTaDWvJGrLozHXrt1VG24yw/i6gStAZdyTF///bTeax9NGLjgkJOz6 xvxuQjs3NWfyO+B9ovmBXuW4Q6UVPgcbWi9VzGgzoD3/KK1i7ocWynvDvwsCi3Jhivmb OokwLI3K4Svfsq4siaoErZOAxODDPPAb3fsDoMnOeOsA8a+OX8NFYTacFUVRVclGMKth 5OHXqGW3c+I86FzHUkcfVtfZg5V1InM7nEqMW6lA/Lyo1wwnkJvi8vXiURDZ64AGg+Yc BJRg== X-Gm-Message-State: AO0yUKX13q6rf8qxUF0I+D5cFvn8cIptJSHGqpw6XQHBpY8A8yyVl0Cn FzcmSPsfa7Wh+LZqnhhf2m/kJtMglPcsLDsTziKgONExXtXTt3HktLuUJn7fCVcGwrfN6Y41wbF UPVAQ5ZGapq4= X-Received: by 2002:a05:600c:46d1:b0:3eb:29fe:fe19 with SMTP id q17-20020a05600c46d100b003eb29fefe19mr1724982wmo.34.1678436994997; Fri, 10 Mar 2023 00:29:54 -0800 (PST) X-Google-Smtp-Source: AK7set/3NDIB2yQpnAOJ1gLOd87qFJtloJUYcD7foQwbKEjLNGWL6NTidbGAfi/e3Esc+ca2i7/9Kw== X-Received: by 2002:a05:600c:46d1:b0:3eb:29fe:fe19 with SMTP id q17-20020a05600c46d100b003eb29fefe19mr1724955wmo.34.1678436994706; Fri, 10 Mar 2023 00:29:54 -0800 (PST) Received: from redhat.com ([2.52.9.88]) by smtp.gmail.com with ESMTPSA id l14-20020a1ced0e000000b003eb20d4d4a8sm1415501wmh.44.2023.03.10.00.29.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Mar 2023 00:29:54 -0800 (PST) Date: Fri, 10 Mar 2023 03:29:49 -0500 From: "Michael S. Tsirkin" To: Ross Zwisler Cc: linux-kernel@vger.kernel.org, Ross Zwisler , "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: Re: [PATCH v2 0/6] use canonical ftrace path whenever possible Message-ID: <20230310032921-mutt-send-email-mst@kernel.org> References: <20230215223350.2658616-1-zwisler@google.com> MIME-Version: 1.0 In-Reply-To: <20230215223350.2658616-1-zwisler@google.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: BD4A840018 X-Stat-Signature: 11o4xfbpczi3xaneyxpyamansjg3eef1 X-HE-Tag: 1678437005-828944 X-HE-Meta: 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 n+zx1eSp cDSrcvwsGhLmNyKM/0iRqSyKmE7c22VJ4+bmtnuerHR+Jrf2+9UN+lA/OwX0FFqPnniB1EDmVvU0wjXzYIqWwWmrF7asYc7103PBCtI0MVQHlh9oTCrTe2btqvqm7f3ie4LN344bGQJRYhoUBry0c1/W1WuXQt5C+tHuLdpIKA2Y/NNbo9u1HhMOiKgDFtJKOagzXbWHmNScFaTg4R8FIxc3qtnlQjYJj0SgUq5K/uZ2wog9R086ieMczTNe+KfNOIby95oVmkYFtqy9PnOOzOu4gxFJOJUVzEPqmPPqm5CbQ59yXvdG3NPZAcD1UPBKJazxMtI9pg7H9uxUrWaq7pftayF9+Lb2nuESZFxXUWZxkJqY= 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: On Wed, Feb 15, 2023 at 03:33:44PM -0700, Ross Zwisler wrote: > 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 if you want the virtio patches through my tree after all, let me know. > --- > 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(-) > > -- > 2.39.1.637.g21b0678d19-goog