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Tsirkin" To: Ross Zwisler Cc: linux-kernel@vger.kernel.org, Ross Zwisler , "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: Re: [PATCH 0/9] use canonical ftrace path whenever possible Message-ID: <20230130142555-mutt-send-email-mst@kernel.org> References: <20230130181915.1113313-1-zwisler@google.com> MIME-Version: 1.0 In-Reply-To: <20230130181915.1113313-1-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: 123131C000B X-Stat-Signature: hgqaamxorqtjn91chsob1ku95asyrtha X-HE-Tag: 1675106778-845007 X-HE-Meta: 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 vhE7yq0Z jk1G5gd0c3SXEUwv3Ge2U4VnIO2a9irccxIbkyje8tEypVqW/wZxoRSXhNybrhDlzUxXu78nF/nSjodPSNF73SXx0r7XXSkFxbB/6Bu3Kuo15J58pOCoOIONXkCVGkJYfRG8kkCzcdXfZJOAIRjj+dhVyxbP6EFOe2ajJieWQffGugQ244tjq4UZX0j/zoSDxlY50mtJrpAjzivN7enu0E1rTowhmp5oC/KvymYyMdqrulZLjdmL4nzZUesjze4SbcIxx593MtTB0Mu5KZekf6BGb9pNXfPBGQkDA5fMgUHFxvRVZgMK1vpso4inLnQ7rNp1Cz2ZckSk5YIrpQnHJ66jAMXbDctZks2lgO4fzxnQji3vBS0w4uSD/MUs8KmhVz4E8Db4YntDPl+CNVxRoNI0LrRHrGNRGtXctKwYAm5cOEbpprl0bP7ElJw== 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 Mon, Jan 30, 2023 at 11:19:06AM -0700, Ross Zwisler wrote: > The canonical location for the tracefs filesystem is at /sys/kernel/tracing. Acked-by: Michael S. Tsirkin > 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(-) > > -- > 2.39.1.456.gfc5497dd1b-goog