From nobody Fri Oct 10 19:50:28 2025 Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) (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 703032581; Fri, 13 Jun 2025 00:01:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.16 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749772919; cv=none; b=J5WPPAi8/qyAJ8gDthD5gf95uPaZswjnJvQpPVtF6Hc+Y1gcTj3AhVrHTVIWqqR4mLBLwXjZwWdh32um+HrVw8ysP6+Mk7k3a3WCtfDN0cRxgGjw0NegjBsKls2DnD05Flcl4gtGmlTAfUM+D7EGtIOGPqOwR4msurFNKMl7dzs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749772919; c=relaxed/simple; bh=8DgMDOVyi1UQysuCYqsGqAUmquXWykBR0aOhtrr7Gzk=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=q2tY7EcX6aMfYfchoze1aG8m7AR/Q0xnLVgkWADN3gEda9+SNAafGK5DWjvY7yZkjme6dPdXegpMXHYMWekez2cdrChkGny+XsFSAlZXYurluW/5xw7HOc72o4u4qYrvh4fe5U6N3YC902umcBVDXw1wXruoyVA++PPcOxNE8fg= 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=216.40.44.16 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 omf04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id CF0931A041E; Fri, 13 Jun 2025 00:01:54 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: nevets@goodmis.org) by omf04.hostedemail.com (Postfix) with ESMTPA id 993F420032; Fri, 13 Jun 2025 00:01:52 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1uPrtJ-00000001wn9-17Qv; Thu, 12 Jun 2025 20:03:29 -0400 Message-ID: <20250613000329.115315469@goodmis.org> User-Agent: quilt/0.68 Date: Thu, 12 Jun 2025 19:58:31 -0400 From: Steven Rostedt To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, llvm@lists.linux.dev Cc: Mathieu Desnoyers , Masami Hiramatsu , Arnd Bergmann , Masahiro Yamada , Nathan Chancellor , Nicolas Schier , Nick Desaulniers , Catalin Marinas , Andrew Morton Subject: [PATCH v2 4/5] tracepoint: Do not warn for unused event that is exported References: <20250612235827.011358765@goodmis.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Rspamd-Server: rspamout01 X-Rspamd-Queue-Id: 993F420032 X-Stat-Signature: 1zxbipspbpwgk4eze9dcw4fckdd6tc8h X-Session-Marker: 6E657665747340676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX18qD7yXiaPbCBd8OTZRmHSXVEzFmcJHrhc= X-HE-Tag: 1749772912-324570 X-HE-Meta: U2FsdGVkX1/ZOp03+AQjtW3CXX65J6zD9icmeRKGsXHWTMWM2Q20vEG6fR7TiEqxhT4XhpXFzc/pd7I7ogMJWup0s+XPm907xrkNZ+nEbkscUh3gZpBTQC18TOJjhXGLbj0436VUmtmVnsNhtdOlMxa4KUaRgbH5xbAOJ/dDSK9G2/onQMCAv+UeUfKpwGsLE/94f9STx1LChBLzSYXlJhe7/uhQVqWt7evA5BdBIPlUd9g5BBhHyrgLFvIGuGy3Sml8tV8W2Is5AdS3VFsfeUKTTShF61m9qPj1pwJaGd1IDH5J6GopMojq/3nZQVO8yz0CAkSn6G5cULEwl0J2j6zyIdJOq53CrYkMebqfh5cvJ9tcuhH4vaoIAzhsGjA9xn+ASTFwysH7ibmKRb7FTA== Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Steven Rostedt There are a few generic events that may only be used by modules. They are defined and then set with EXPORT_TRACEPOINT*(). Mark events that are exported as being used, even though they still waste memory in the kernel proper. Signed-off-by: Steven Rostedt (Google) --- include/linux/tracepoint.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 2b96c7e94c52..8026a0659580 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -223,7 +223,8 @@ static inline struct tracepoint *tracepoint_ptr_deref(t= racepoint_ptr_t *p) =20 #ifdef CONFIG_TRACEPOINT_VERIFY_USED # define TRACEPOINT_CHECK(name) \ - static void __used __section("__tracepoint_check") *__trace_check =3D \ + static void __used __section("__tracepoint_check") * \ + __trace_check_##name =3D \ &__tracepoint_##name; #else # define TRACEPOINT_CHECK(name) @@ -381,10 +382,12 @@ static inline struct tracepoint *tracepoint_ptr_deref= (tracepoint_ptr_t *p) __DEFINE_TRACE_EXT(_name, NULL, PARAMS(_proto), PARAMS(_args)); =20 #define EXPORT_TRACEPOINT_SYMBOL_GPL(name) \ + TRACEPOINT_CHECK(name) \ EXPORT_SYMBOL_GPL(__tracepoint_##name); \ EXPORT_SYMBOL_GPL(__traceiter_##name); \ EXPORT_STATIC_CALL_GPL(tp_func_##name) #define EXPORT_TRACEPOINT_SYMBOL(name) \ + TRACEPOINT_CHECK(name) \ EXPORT_SYMBOL(__tracepoint_##name); \ EXPORT_SYMBOL(__traceiter_##name); \ EXPORT_STATIC_CALL(tp_func_##name) --=20 2.47.2