From: Breno Leitao <leitao@debian.org>
To: Paolo Abeni <pabeni@redhat.com>
Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
"David S. Miller" <davem@davemloft.net>,
David Ahern <dsahern@kernel.org>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Simon Horman <horms@kernel.org>,
kuniyu@amazon.com, 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
Subject: Re: [PATCH net-next] udp: Add tracepoint for udp_sendmsg()
Date: Thu, 17 Apr 2025 04:34:51 -0700 [thread overview]
Message-ID: <aADnW6G4X2GScQIF@gmail.com> (raw)
In-Reply-To: <67a977bc-a4b9-4c8b-bf2f-9e9e6bb0811e@redhat.com>
Hello Paolo,
On Thu, Apr 17, 2025 at 08:57:24AM +0200, Paolo Abeni wrote:
> On 4/16/25 9:23 PM, 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()")
>
> Why is it needed? what would add on top of a plain perf probe, which
> will be always available for such function with such argument, as the
> function can't be inlined?
Why this function can't be inlined? I got the impression that this
funciton could be, at least, partially inlined. Mainly when generating
ultra optimized kernels (i.e, kernels compiled with PGO and LTO features
enabled).
Thanks,
--breno
next prev parent reply other threads:[~2025-04-17 11:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-16 19:23 [PATCH net-next] udp: Add tracepoint for udp_sendmsg() Breno Leitao
2025-04-16 19:34 ` Willem de Bruijn
2025-04-17 11:31 ` Breno Leitao
2025-04-17 13:38 ` Willem de Bruijn
2025-04-16 23:16 ` David Ahern
2025-04-17 11:42 ` Breno Leitao
2025-04-17 15:55 ` David Ahern
2025-04-17 16:00 ` Breno Leitao
2025-04-18 4:57 ` David Ahern
2025-04-18 12:33 ` Steven Rostedt
2025-04-18 14:47 ` Steven Rostedt
2025-04-17 6:57 ` Paolo Abeni
2025-04-17 11:34 ` Breno Leitao [this message]
2025-04-17 13:17 ` Paolo Abeni
2025-04-17 15:37 ` Song Liu
2025-04-17 15:48 ` Willem de Bruijn
2025-04-17 20:00 ` Song Liu
2025-04-18 14:49 ` Willem de Bruijn
2025-05-27 13:45 ` Breno Leitao
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