From nobody Sat Oct 4 04:56:46 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 9C5D936CE0C; Wed, 20 Aug 2025 17:48:25 +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=1755712105; cv=none; b=rLXIEFWC6tA/T62tL+FCeYmf6AyOcrpNsWniSShH9cEUZ5tpYik5bu4b3Aj9nsP9jA5kaKaSvDNigkARA4bMMweLBEMCGZBvuzK8+qU5fTzTBEmC6WrpdJSJazoYu6tMVCEumLrkNdTbZYa/wY/ugnUHsfFLcFziZGCcY0aUVTg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755712105; c=relaxed/simple; bh=6peswoOhdw7dXI0cwkW9pPp7bgdjqqT10/tl3qs06UY=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=UliK3kcEBNsugm+3fI0OsUK5WhWCDfplceVu3Q9qXpyZofwtL3yqcmUyuJRGlgLYFbRoe914oGvHKal1/u3M9jb+CRNpPvK/BjlM/qYd/yA79GKEYqfq427STt+Nu8Z+zg+7NqBpFyPUPFrglE4pq3JT/NPcxLo36ODfwouWQms= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k7kIQcYr; 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="k7kIQcYr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 763EEC4AF09; Wed, 20 Aug 2025 17:48:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755712105; bh=6peswoOhdw7dXI0cwkW9pPp7bgdjqqT10/tl3qs06UY=; h=Date:From:To:Cc:Subject:References:From; b=k7kIQcYr4dAU3vHgI0Kg9RAqL96t50M5aDutZqH9CH2p5gvjhZAh4coACmWKLH1yl uQSzDmXp2kGfZcKzEzIffLXqu/3DEaYyG81rjz6cVu9F71xelvfee1H02j2Z4NBewf PhXlJUpDa2PHyqHbEbX1++TFHoEaHLnEsm0KBP7KV0LULFESg97+3frn944ajx8/jP gMu9B1RlpujqH9l8G8x/c8sM+9AvYl5LRkj9wkvhibM7xXTFNqUmBZ2T3JTH4wyOe4 W0+V8gQb75sd8AVMtaefqb2kYiqT2fQMt+xnn8Y100kVA013OA/yAFXJ/Cn0jEW08O bgHuJc9rwREpQ== Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1uomvE-00000000rUD-1g1S; Wed, 20 Aug 2025 13:48:28 -0400 Message-ID: <20250820174828.252631905@kernel.org> User-Agent: quilt/0.68 Date: Wed, 20 Aug 2025 13:47:55 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org 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 v6 3/3] tracepoint: Do not warn for unused event that is exported References: <20250820174752.684086778@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 | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 71d2e085c49e..ec6827d00d79 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -223,8 +223,8 @@ static inline struct tracepoint *tracepoint_ptr_deref(t= racepoint_ptr_t *p) =20 #ifdef CONFIG_TRACEPOINT_WARN_ON_UNUSED # define TRACEPOINT_CHECK(name) \ - static const char __used __section("__tracepoint_check") __trace_check[] = =3D \ - #name; + static const char __used __section("__tracepoint_check") \ + __trace_check_##name[] =3D #name; #else # define TRACEPOINT_CHECK(tname) #endif @@ -381,10 +381,12 @@ 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 2.50.1