From nobody Fri Oct 3 16:41:51 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 E56422882C5; Thu, 28 Aug 2025 20:37:20 +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=1756413441; cv=none; b=SWdDfwnA8X0DRvPZoYY8tbAl4AakDIkf7nzSSmrMZC7WYjiQVnrfl+Te3NYzCG9wg5Qn8UJMnK6Cc1H/vL3rlytLxi3ho/x8lstfvZqz2zDvidxXdkYef2rYvGV6KyAyqDj6qqs6fYYr+su0KEZLeKUQEtbUtD31j46oBuCmjk0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756413441; c=relaxed/simple; bh=6peswoOhdw7dXI0cwkW9pPp7bgdjqqT10/tl3qs06UY=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=eiOTuTFBWPHRVPUmXJ7zdK3c3I3CRgsc2kE2Rj7Bdy6ymwtJmjczgp9XQD4wTySZZNa4xU09YaXrUb+rU90GCAs9qf2X7d9O8g31PptZty7GdUPrd7hQPsmEqQBKRWQhTJyYf/aeaAqnbnsBf0Qg53jPB8gtSestIajemmi6sPE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=vCFdQEt2; 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="vCFdQEt2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 78220C4CEFA; Thu, 28 Aug 2025 20:37:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756413440; bh=6peswoOhdw7dXI0cwkW9pPp7bgdjqqT10/tl3qs06UY=; h=Date:From:To:Cc:Subject:References:From; b=vCFdQEt2fAjKXh9vIK+lJTWXS/p72u6+hE2OqBO5ccAYuseJC+nxE/bohoa0t5GY8 hSSZH5i4luo+NfXXUrKRIMTdOS0KbQ0tvP5Ga11Nl9ARzpjfQSFFUwF2ECmtWECQQG JfuSQxD2N+/RFM5x2O+tIG1wBuvv64oavaoK/fKZ6Ubkcy7i0tJ5jsu9vaZ+H38/Rn smgvYv9+nQh/gn68hnufhIoU8T/axbjTF/Ij/uyRJzS+FpwUdR6Ct8pEFE7ycvQV1G sh8sm6ZuM8DSJkkM+R+i75ieSVSLiYgCI12VWfEggqGzTL5VOUzQqf86CFgJZj+5Ic ljDWLHGCe01TA== Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1urjNN-00000004JTH-30eM; Thu, 28 Aug 2025 16:37:41 -0400 Message-ID: <20250828203741.571495248@kernel.org> User-Agent: quilt/0.68 Date: Thu, 28 Aug 2025 16:35:58 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@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 , Randy Dunlap , Stephen Rothwell Subject: [PATCH v8 3/3] tracepoint: Do not warn for unused event that is exported References: <20250828203555.783399758@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