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[34.145.139.141]) by smtp.gmail.com with UTF8SMTPSA id 6a1803df08f44-6f0dea10825sm118667666d6.116.2025.04.16.12.34.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Apr 2025 12:34:39 -0700 (PDT) Date: Wed, 16 Apr 2025 15:34:38 -0400 From: Willem de Bruijn To: Breno Leitao , Willem de Bruijn , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , "David S. Miller" , David Ahern , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , kuniyu@amazon.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, yonghong.song@linux.dev, song@kernel.org, kernel-team@meta.com, Breno Leitao Message-ID: <6800064ea440f_fc9d7294c4@willemb.c.googlers.com.notmuch> In-Reply-To: <20250416-udp_sendmsg-v1-1-1a886b8733c2@debian.org> References: <20250416-udp_sendmsg-v1-1-1a886b8733c2@debian.org> Subject: Re: [PATCH net-next] udp: Add tracepoint for udp_sendmsg() Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Breno Leitao wrote: > Add a lightweight tracepoint to monitor UDP send message operations, > similar to the recently introduced tcp_sendmsg_locked() trace event in > commit 0f08335ade712 ("trace: tcp: Add tracepoint for > tcp_sendmsg_locked()") > > This implementation uses DECLARE_TRACE instead of TRACE_EVENT to avoid > creating extensive trace event infrastructure and exporting to tracefs, > keeping it minimal and efficient. > > Since this patch creates a rawtracepoint, it can be accessed using > standard tracing tools like bpftrace: > > rawtracepoint:udp_sendmsg_tp { > ... > } What does this enable beyond kfunc:udp_sendmsg? The arguments are the same, unlike the TCP tracepoint.