From nobody Fri Oct 3 16:41:54 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 654B5275B1B for ; Thu, 28 Aug 2025 18:31:04 +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=1756405865; cv=none; b=OLT84IImf57A7gvsxOSl+g47ak4K+cmNgJfv6qbAm7Sfx7yL1Nscc4KaQV6A6oU8aDVkIKa4OqrBtqhwzuZtKuAPLESPgfrVxeAmGSAMhhs2PAx8fr6V9B96H1CfQOm0U53aIAPv/maOrMTXRBZEOFYKQ1A42ORcHLlTk9jvYlg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756405865; c=relaxed/simple; bh=ZsrBnjZrAGmas9VV/NlTzzDoN92w9B6jeA6SVe3XhqE=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=r9nLdOGlsvbzOtFiX1hqs9op5wYNPKjZcdsVq2Q2p4LtiOW3KD++swTd0zvXskSRlpGqogV39Zoc8+ElAoMxLqB/p71Egun+z0H5V8Qqcb2h3rmRG+Xx4TnPDiLzZI7HOHvWZb7x6RxDNcZuZk5dghFduOOtigUWSZn5m3mntww= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=D3AT0WBg; 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="D3AT0WBg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BCBA1C4CEF8; Thu, 28 Aug 2025 18:31:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756405864; bh=ZsrBnjZrAGmas9VV/NlTzzDoN92w9B6jeA6SVe3XhqE=; h=Date:From:To:Cc:Subject:References:From; b=D3AT0WBgDpykwVL+S/gh6qFvsIQ3WSuZLxU1CW2nj186om07nIj9yMBBjF09N8Ei2 hG4QJRbAtI39L77W/v8sgb11Q+wkIPTMq0jVDVekKRpkss9gBva/ytcMyS7OND2OoD Sp1KZ5bKlKasLyiuu0EOUa1jegrT0K9V3+9PqJGbQKExTJ3Y+I4eYcHjYiD6irjNOj EmhKx0fi49E9yVBQbGsoT+erYjhZPmlq2+2TisIQx7nVkwT55TGC+Tb3JTjwjQTgB6 ZE++vRXg47wIES1tc50qcb7gceprOig2GkzFLj0RGT8dFWC99tP7BKfd+WEQ7Itf1W 6fYjn0YWoVgEQ== Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1urhPB-00000004Gsy-3G3a; Thu, 28 Aug 2025 14:31:25 -0400 Message-ID: <20250828183125.629250914@kernel.org> User-Agent: quilt/0.68 Date: Thu, 28 Aug 2025 14:27:57 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, Stephen Rothwell Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Linus Torvalds , Arnd Bergmann , Masahiro Yamada , Nathan Chancellor , Nicolas Schier , Nick Desaulniers , Catalin Marinas , Randy Dunlap Subject: [for-next][PATCH 3/3] tracepoint: Do not warn for unused event that is exported References: <20250828182754.733989525@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. Cc: Masami Hiramatsu Cc: Mark Rutland Cc: Mathieu Desnoyers Cc: Andrew Morton Cc: Arnd Bergmann Cc: Masahiro Yamada Cc: Nathan Chancellor Cc: Nicolas Schier Cc: Nick Desaulniers Cc: Catalin Marinas Cc: Linus Torvalds Cc: Randy Dunlap Link: https://lore.kernel.org/20250825231355.939259124@kernel.org 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