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 2FC8AC6FD20 for ; Wed, 22 Mar 2023 02:32:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7795B6B007B; Tue, 21 Mar 2023 22:32:57 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 72965900003; Tue, 21 Mar 2023 22:32:57 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5F286900002; Tue, 21 Mar 2023 22:32:57 -0400 (EDT) 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 5113F6B007B for ; Tue, 21 Mar 2023 22:32:57 -0400 (EDT) Received: from smtpin27.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 0D74C8028D for ; Wed, 22 Mar 2023 02:32:57 +0000 (UTC) X-FDA: 80594961594.27.0328CD6 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by imf15.hostedemail.com (Postfix) with ESMTP id 09D53A0004 for ; Wed, 22 Mar 2023 02:32:54 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=IZi4b9wm; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf15.hostedemail.com: domain of mst@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=mst@redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1679452375; 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=BzR3eLSpqoTMzxh2NgN0pV0oM+P8NH9sKNgtkW4tjlQ=; b=7jG6A4b7cX0VQFzfwcded6F1bkXnm8g4MhDrzlTSagSi7pZZIWmGXqRU+Zkk+7ZfWLCcfZ rAUEWZAiBbKNSShbmWdEqSqYnQqgVKmpnHyNWhi7aH3hydCJMgFvFXcLj46rP6xazLqjY7 PQ9sKpI5C2Ig+jfeTChuAUMPdaCzRXw= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=IZi4b9wm; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf15.hostedemail.com: domain of mst@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=mst@redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1679452375; a=rsa-sha256; cv=none; b=4Rsz2wZ+SMsMMZzroS8N/CHa0hbadEdw5/oresoui68P+G9iaaXcaTGdqafSOsSPRvxcSK J8o+BDLB50HzFmgdpzwBkEAuPdkhPqL3S2SRvZy0MtnqNZC4WA6uhIXqIos6bJTH2Prmv0 iwLAnhriN5HDH3abqIpl8EVlbFIxXNU= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1679452374; 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=BzR3eLSpqoTMzxh2NgN0pV0oM+P8NH9sKNgtkW4tjlQ=; b=IZi4b9wmRy2VokAZnpLkAKbkn5axwxhLgeVPtxgXzygCWcbs+UFiE1m/7dus1a2yL1JPG9 R/C4B3Vi0DbeVa9TzpUzMUWudO4sRywTZQ8x63hRwwVRfD7ofV+WLaSLsUa55IE+XHg3rM IbyeFgD7Ac5J4+2JMimt7QWbKOKom40= 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-288-bK4FUkhJML-UbZ9kQdlbiw-1; Tue, 21 Mar 2023 22:32:53 -0400 X-MC-Unique: bK4FUkhJML-UbZ9kQdlbiw-1 Received: by mail-wm1-f70.google.com with SMTP id j27-20020a05600c1c1b00b003edd2023418so4969437wms.4 for ; Tue, 21 Mar 2023 19:32:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679452372; 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=BzR3eLSpqoTMzxh2NgN0pV0oM+P8NH9sKNgtkW4tjlQ=; b=A2i0p+QBhozDXehaSFPlUgbenYvUKq4KBBrPWTw0QS3lAoiD6MmnevAY0Xi7Ix/CK8 D0lJKyzQP/HXPNlxDEAy/bRKiITC2fGIZii2aJPIH66BaEaXF95zMmkLhClm3F+eSgix qNMJJyTciOPvEaecFgoY6QjI2MU2lTX478pWNkOadCROKhQcPFvhkrBygGesJ5WdV9kl ayrA3a8oTjn0PpI78Zt7gZE5Ky0Q6MRfc3RUSqG8F8TIP+t1ElUvnfgZWhnr4A3QJjOI XZLHRBwApWwcIBsNS2FvCDvi1G1DbPmBhZzMifrj7h2fLzQIaCjgQXf3r5S+ENyQeCiH 9d2g== X-Gm-Message-State: AO0yUKUPg/icwRZit8uePHJwQLFLNI6jrGSB60kEZe63ECOSZh2u1tTW r4SruDgxhlijySrhO8GFLSB/94VrJCqGphIzJT9a3NzLxKGTwXyIZrJVGIhvp84R31FNycJ4i2W FPe9v3hmk6io= X-Received: by 2002:a5d:4521:0:b0:2cf:e827:b597 with SMTP id j1-20020a5d4521000000b002cfe827b597mr3982527wra.10.1679452371928; Tue, 21 Mar 2023 19:32:51 -0700 (PDT) X-Google-Smtp-Source: AK7set+IAoeXaV5Ezy2+ySyjfqstu/owf9Mg6SdCShB52Q1gVgr7GbSGeNN3VY0ntYreU5GIBMrYUQ== X-Received: by 2002:a5d:4521:0:b0:2cf:e827:b597 with SMTP id j1-20020a5d4521000000b002cfe827b597mr3982509wra.10.1679452371580; Tue, 21 Mar 2023 19:32:51 -0700 (PDT) Received: from redhat.com ([2.52.1.105]) by smtp.gmail.com with ESMTPSA id n1-20020a5d67c1000000b002cfe685bfd6sm12661630wrw.108.2023.03.21.19.32.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Mar 2023 19:32:51 -0700 (PDT) Date: Tue, 21 Mar 2023 22:32:46 -0400 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: <20230321223139-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: rspam02 X-Rspamd-Queue-Id: 09D53A0004 X-Stat-Signature: zmocb3dkd935bubpsqcdcz7dewh81fsn X-HE-Tag: 1679452374-232357 X-HE-Meta: U2FsdGVkX18hWnT9fR7H/aOLfdc5rXNzHR6YaG+hv0MulMl7tVbaX66PBUyRdADH835yAWBMFB3s3nBlrMVIIB8l0U55u5BQUNmReOlx2NT6SMDt8DLCtnRvNYyPe8syKMAS5aLVh/znKJks7Bk1SJD7SRD6qnd6Lb+1bbfe9Xhp+hFJawTeBgJLXyvP9w/es8FxaMKRpx8iQp0kznxAFJjqTsh3dj3BROpA0PFRy1nMaIIEIgiH++0IABSqawZlvWwVsq00/Tp0OIaTTAZ7kdTH1wgWxjscuuxNBq6vglmkAI5KjUbllkCvezV4/NqbXEg1gcBWshqIrVZ3QNwjTfK+kUEXChrtUnFKZyM6LxN3xsbpBLs2OUfyIeD6WleXGNbP4xwUGB+QSZ+MnsGX81nWVSCLvWycWRdCoNEkzPE/9Xh/55kb7U1WDx5YsrL4wAJn2Of+Vn3xlFyp8o+kzy2+c1Ic2gxX+40cHh4y5j9rmjcnBizDvIb3VrxAipDgqFXgkeb+ri5L0Fy2KmBEk9OMFf9XRV7IiQuJ7s8A0mcE4pfpjPVS44fifZVNdhIi2uCUaVH2gCJk7dsnu6ABhXrevXwyqF0M91jFioD55t4n7kEfcY7VdNdrnXHF3lKdIe2oeutoqcPlHC94F4m3sA6G0Qzztla4Hf3Eg5D5u08SwQ+nmovGE4JLmfZLZSGzDv3Cf54Q7BcKvgcnDUhMJ3mphgbTlzfzDJ0YcNpDWyExeKSF553GxoOaKVT/mehrZeZJu02lLIsBC9Sksz1F3aAJBz3PVCDKixu/YkcI7teVfWklJGqG7aJRckZtOA5sj0784Ti4gZ78JxET5AwbVMhpzK4riUpAfDgAVaNtGZpXj0gjw8FJb6ObrvZKlExUU3qG8NEobdZUwT4QshZHOtnfE1UYwrORCUEVly0QQyIqxQgrcADYnbCPi5+YBB83/FUO3pwim3DfsLUr6zQ KCm83jc8 zCqCdlUGSt+nQUgo+qV2u0teUqBYn6Nix+5QkHUYvUvQTiFB08wUP3DRhjpGWJKQQqWUSplCjgwxL3Ge3rYkubYlcskL/uh8b4UjB4wSnGuLtBvWvPFW46bfmXu09OFeXIQFGdLYXDUsuqgI5zxJV1LyrRPJFg0XgJgBbB99Q+O5Z1emi1JuKsGkpTsfdcPqyswWqTeFTG8/u0VscsVQH+JvIuD7j5e7v3yiKflA3WTi67rD05HWXD5j8vb+iFz/4kmALp3qFEBHvDkd1jLL/Yku30dN/aFxVaQCCkawPzwauK0K8/5A5c8X/sdAtXxKE1Iz8GklIQjYF7aI7644OAbxq5vBtsCg1XyxSBrodsKaaLsk= 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? for merging up to patch 5 through another tree: Acked-by: Michael S. Tsirkin I'll merge patch 6, no problem. > --- > 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