From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 54A5B390998; Mon, 22 Jun 2026 13:08:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782133716; cv=none; b=linQzqeGsXsD2V4/LjuuITrxfcdNgEd1EO822HKE5pyXMC5xGctOcMtUUD8zQH8oO99JC4NqgOqmYJze24vED7c9EwrCrDEFBIQWZMEaDtlf8S/qZLfQNNmB41n7X0lUGTWbd9xJQFLo56wBtG5bBuPVKRgFYwKMsbAZBhO8Uz4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782133716; c=relaxed/simple; bh=Ao6okc9bWJbhFHg/MDFNztgFltrYBcu0addAjYys+F8=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=uA6nCqn+RKCHNpZutkp8uk1THfn0OveyY+CMRCWxgJdhSJP/aQkFsxkW3nrgVM43oNPtncljVHlrmm2kdMGvXaP280TcCPghONuNTLWeOuhqk9i9c3FCK9fzc0ZXZpOK0RrHH++yRbnAbSIPggmtm1PMcK1tWZdpsLpOucH/q6A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a20FWXNV; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="a20FWXNV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5FB651F000E9; Mon, 22 Jun 2026 13:08:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782133715; bh=Wl8mD9+xZA8nx14eIBmWbrmAKkBoa2SL0k1i5niNjQs=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=a20FWXNV5UIOVvZQK3oYlnmbhvnGanajAqGfPBzgq1mtLmcUE0p/4+x6YU7Shadgl mqi/3qM8CCBEc0VEfdgQBopeHXXuKfZG+uiDCEbuCYUpTv0SvsiCbiGCb/9bB4KhEW DRUlVIjPKW+wSj99mCg6leZnz6Tlv8BmEwq+uZD69jaXsaAzuDy40c4nJO/LtwTgIV HkMCM8iVWaXizhCkYCbfvhIXZ4Fc2dHPUyzviYNP1yPfWv5E/7zB3cUSfjt3Sls1ya Bk1Z9eNqEc0O10dh8knMYEWL3e8V2fAD+NW45w3IWR+66cvzU66jHpfTiQOKBsif7e TuRZv2ou5tdjQ== Date: Mon, 22 Jun 2026 09:08:26 -0400 From: Steven Rostedt To: "Christophe Leroy (CS GROUP)" Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Linus Torvalds , Sebastian Andrzej Siewior , John Ogness , Thomas Gleixner , Peter Zijlstra , Julia Lawall , Yury Norov , linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-rdma@vger.kernel.org, linux-usb@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nfs@vger.kernel.org, kvm@vger.kernel.org, intel-gfx@lists.freedesktop.org Subject: Re: [PATCH 0/2] tracing: Move trace_printk.h out of kernel.h Message-ID: <20260622090826.20efadb3@fedora> In-Reply-To: References: <20260621093430.264983361@kernel.org> X-Mailer: Claws Mail 4.4.0 (GTK 3.24.52; x86_64-redhat-linux-gnu) Precedence: bulk X-Mailing-List: linux-kbuild@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 22 Jun 2026 10:05:13 +0200 "Christophe Leroy (CS GROUP)" wrote: > > There's been complaints about trace_printk() being defined in kernel.h as it > > can increase the compilation time. As it is only used by some developers for > > debugging purposes, it should not be in kernel.h causing lots of wasted CPU > > cycles for those that do not ever care about it. > > Do we have a measurement of the increased compilation time ? I believe Yury does. -- Steve