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([2001:b07:add:ec09:c399:bc87:7b6c:fb2a]) by smtp.googlemail.com with ESMTPSA id n13-20020adfe34d000000b002c546d169ddsm4038181wrj.11.2023.02.17.03.32.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 17 Feb 2023 03:32:20 -0800 (PST) Message-ID: <45e343f7-9b1b-fb23-30ee-4ba59b6dfa62@redhat.com> Date: Fri, 17 Feb 2023 12:32:14 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.1 To: Ross Zwisler , linux-kernel@vger.kernel.org Cc: Ross Zwisler , kvm@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Steven Rostedt References: <20230215223350.2658616-1-zwisler@google.com> <20230215223350.2658616-5-zwisler@google.com> From: Paolo Bonzini Subject: Re: [PATCH v2 4/6] tools/kvm_stat: use canonical ftrace path In-Reply-To: <20230215223350.2658616-5-zwisler@google.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-trace-kernel@vger.kernel.org On 2/15/23 23:33, Ross Zwisler wrote: > 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 > > A comment in kvm_stat still refers to this older debugfs path, so let's > update it to avoid confusion. > > Signed-off-by: Ross Zwisler > --- > tools/kvm/kvm_stat/kvm_stat | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat > index 6f28180ffeea..15bf00e79e3f 100755 > --- a/tools/kvm/kvm_stat/kvm_stat > +++ b/tools/kvm/kvm_stat/kvm_stat > @@ -627,7 +627,7 @@ class TracepointProvider(Provider): > name)'. > > All available events have directories under > - /sys/kernel/debug/tracing/events/ which export information > + /sys/kernel/tracing/events/ which export information > about the specific event. Therefore, listing the dirs gives us > a list of all available events. > Acked-by: Paolo Bonzini