From mboxrd@z Thu Jan 1 00:00:00 1970 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 65B7639FD9; Fri, 25 Jul 2025 02:52:09 +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=1753411929; cv=none; b=SSx3LRFH5alTALKH2kigFLAtBhqoQ4LrnHF34Q7yxVkpHxATt4XPkrG9Ms8bao7FqnjpHP41pp1YKo3jRd7m0+luWQDcxJmzGKCdCO7M7Jf/d7HHXY054pUgU3VngFYfedpZsjHoQUJRdMINjOlBBgdiDcQ5rvphwR8ttBMFIqM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753411929; c=relaxed/simple; bh=W8XstG0jag+oNtZKPzFav967dXWnZ4npIsUdDTB34mo=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=a5oUGr+PFOn447d9UWo0s/E58QX+vbeyn4TWz5YW8pVw3k1z0GeR2i9SjTSyndmF4MR7l62gpwyIVmd78Uuv2hskJ56PDjQW0VkOGlf3rRb6KZU7mBdyZhj+kcZnDAyjIJktn/DhEDWlj7FTVsQMaqreYjAxWPAZvLT/6fLSIrw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lPO2EzUC; 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="lPO2EzUC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DB5AC4CEEF; Fri, 25 Jul 2025 02:52:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753411929; bh=W8XstG0jag+oNtZKPzFav967dXWnZ4npIsUdDTB34mo=; h=Date:From:To:Cc:Subject:References:From; b=lPO2EzUCp6TGitOy/ExRRcZgyNFCHbqvWXh2VJ2+ndGMZiNYZ3pjC1yJcejvN2bZY 8k3VA9oNZJxfWlGiN4Wg5K90UFph/cRKTKitvzldGvCz9VMhDx3GvabIoixtUIOUe9 8fU+TKCvSdgCa+mI2urzKaojIn1tsEmjyuC9o4Dn84pW63+1+ij5SGWOZQxnW4UR5B Svm8XVtNjlvMrGRcdOPIUoAQyJfhkKtmrerfEi4s2VADkO26HYpxHnafW3wG/ZROPV z3LTwfiI93sPYxCSkt7RgOcmGiSO6FZKPCldCjItSRMHBI0Psz39ca42W6bxj8Ry/G 0mHmOITt/fhhg== Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1uf8Xd-000000010pQ-2lsJ; Thu, 24 Jul 2025 22:52:13 -0400 Message-ID: <20250725025213.514260220@kernel.org> User-Agent: quilt/0.68 Date: Thu, 24 Jul 2025 22:51:52 -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 v5 3/3] tracepoint: Do not warn for unused event that is exported References: <20250725025149.726267838@kernel.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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(tracepoint_ptr_t *p) #ifdef CONFIG_TRACEPOINT_WARN_ON_UNUSED # define TRACEPOINT_CHECK(name) \ - static const char __used __section("__tracepoint_check") __trace_check[] = \ - #name; + static const char __used __section("__tracepoint_check") \ + __trace_check_##name[] = #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)); #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) -- 2.47.2