From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BEF7230E0E9; Thu, 18 Sep 2025 15:23:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758209013; cv=none; b=DK2atUWxDEJqp5hsDzw8D/ADnFB4JGXEUv2Q/bKIWZo+qUezbwLNqvoaP9SxVIMNMPUcnyCHi/41VmYpjqE3yye3/cAFUd+KwmDXuKOSdJwpNvnOm8b1HZCLW+wAYmIoJCQq5vT69u/ibCuwCAqwmwVFzYvjk9EYpK8pQYSDyVg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758209013; c=relaxed/simple; bh=NHZ2ORArzxNUylF6vygV6kCOeIu2Wbgv9ac/4epvHK4=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=CBLM7xgzqceHDdN92Mn3izVuOd1zXzP7KdGxC6KqCEB72HWF+azAD5A1tzp64M5nqATnub6yDBU5wM2jm0hmZwutl01Qw258SF8Ws3TPZVQZo/m7jl7/RsSc50hWFxuaKhaYy/cR3PlYqQCA/8zAzc6en8hsw74oHwKcrumf6YY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf09.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id B88C3B756B; Thu, 18 Sep 2025 15:23:22 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf09.hostedemail.com (Postfix) with ESMTPA id 6C22E20025; Thu, 18 Sep 2025 15:23:17 +0000 (UTC) Date: Thu, 18 Sep 2025 11:24:25 -0400 From: Steven Rostedt To: Fuyu Zhao Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, haoluo@google.com, jolsa@kernel.org, eddyz87@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, shuah@kernel.org, willemb@google.com, kerneljasonxing@gmail.com, paul.chaignon@gmail.com, chen.dylane@linux.dev, memxor@gmail.com, martin.kelly@crowdstrike.com, ameryhung@gmail.com, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, yikai.lin@vivo.com Subject: Re: [RFC PATCH bpf-next v1 0/3] bpf: Add BPF program type for overriding tracepoint probes Message-ID: <20250918112425.23d4d379@gandalf.local.home> In-Reply-To: References: <20250917072242.674528-1-zhaofuyu@vivo.com> <20250917153055.6fee814f@gandalf.local.home> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) 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: quoted-printable X-Stat-Signature: fqyhtzmk4ch6fggf79z9gc37wtq3dwu1 X-Rspamd-Server: rspamout08 X-Rspamd-Queue-Id: 6C22E20025 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX18P1hRjLcFAJR/HlcDkMOBrSvLYf6Ril7w= X-HE-Tag: 1758208997-146052 X-HE-Meta: U2FsdGVkX19KLlcfuUHlnoX7WA6C2lDCWiD1hUjNLxixnDz/qr5at9WuFIcm+IE0hVWwHrzDnHtL/FhxnH6Lc9flXhRLnxNC+3Jfx5/CuhM0gcDZCq2qZmbp8fBv5MXvrlbsGHKFyjKeGbR/EivgAkrA9auX3H+7PRBDl9PZVJVtH+Nv39QCqMkBNMz0Dw2fpF+rmQ2sMhN/5kNTLsdxV7gA4YvTEde3iwnB7rz1txvHFxJMs/fmjcVj9NMspXvvSPah+cbky9LCU8jjwf2WeARwDTePM7z7Sq4KFBeX5xPlAm8ApHORE3uXXqzKxVBcDjJNQrE5yTxmBwC5bf3AvlJtPfXsEK7c On Thu, 18 Sep 2025 20:33:22 +0800 Fuyu Zhao wrote: > At the moment, I don=E2=80=99t have a solid real-world example to provide. > This work is still in an exploratory stage. We shouldn't be in the business of "if you build it, they will come". Unless there is a concrete use case now, I would not be adding anything. My entire workflow for what I created in the tracing system was "I have a need, I will implement it". The "need" came first. I then wrote code to satisfy that need. It should not be the other way around. -- Steve