From nobody Mon Oct 6 11:57:06 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C0AE4263F5B; Tue, 22 Jul 2025 15:21:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753197685; cv=none; b=jowcn+bnY1DyFzqFYKHh5fbKvUVNIO0WgvIAHEgY0fyphT/3aKlbtK1OBUOFjBmz4unpl8muqurwhIum6VI9n9rnp832fvhGNm59ABXorszQeyHG4b6IYymz10IaHlSlnmNnex6lC+MqJXNBxabrDRv0M/v5zPHvTzSSbLw954E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753197685; c=relaxed/simple; bh=8DgMDOVyi1UQysuCYqsGqAUmquXWykBR0aOhtrr7Gzk=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=fTOubSAMz0DG9tUR4BJruvDyHxk6Vbii47Ej6VLjkRKQ8VCIg/X0NbFrlrf51b/D27M/XS1t2ZUB0yHE63lIGOK6bMS4W9u0CJahQH4vLd/AF7+v62gZuzBRvmQ3UZ4g3OCfakzPnuBH00VwikauRDnCfzLMT6xMP1i7cvrWnWA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cMVqPpwD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cMVqPpwD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F107C4CEF7; Tue, 22 Jul 2025 15:21:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753197685; bh=8DgMDOVyi1UQysuCYqsGqAUmquXWykBR0aOhtrr7Gzk=; h=Date:From:To:Cc:Subject:References:From; b=cMVqPpwD6CUxA//YsB4wWzvJgiE5LHObwoguRyA2Z519cVFA274MUKPeOb8SoC3iZ 6op5BLpPw5pvzyxWVtLY4+1Y2ptlVR/XJ3sQ9rHQo4oxQqjfgPn3CNp0dkCHet1pMH s9wcFh3u3rbosRkeqBT1bOLkT+GsLc0aDLqS1TJE6hRqpDFmeEha8+wXmso70pOdN5 UbNnvDv/rLn0s1EsaSxUkOKlLKbTp5dBDWrBfH5614bUAz7rpH4YnUbF4OBf5hwFWZ oqgJIl7obLfIdzcW8UPHKbpIW0HlC6WQBPbngjq+gp0jnGZ7oEiaLznJSVX+wPHFyq 85uzNC/Ghzy7Q== Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1ueEoY-0000000AYzr-1Ji9; Tue, 22 Jul 2025 11:21:58 -0400 Message-ID: <20250722152158.166727806@kernel.org> User-Agent: quilt/0.68 Date: Tue, 22 Jul 2025 11:20:57 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, llvm@lists.linux.dev Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Arnd Bergmann , Masahiro Yamada , Nathan Chancellor , Nicolas Schier , Nick Desaulniers , Catalin Marinas , Linus Torvalds Subject: [PATCH v3 4/5] tracepoint: Do not warn for unused event that is exported References: <20250722152053.343028095@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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