From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yx1-f51.google.com (mail-yx1-f51.google.com [74.125.224.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B74963B14C6 for ; Mon, 22 Jun 2026 13:11:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.224.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782133912; cv=none; b=Gku9ogMcp/KDBmMIoQGmgeMP0nfB1ZpDvuVd000yobec9wrTjAcSnACVWxmGTSRutaf1gyxlGomeETGCkI+5WvKh7PXHtReFYGyu8ls4Rm/OizxcTr7sQbyptibVMt4hqYPgD+UYQLRUfBjOwlJtqseeJypMp7sDF0sik57zGlU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782133912; c=relaxed/simple; bh=HQz5Bgb9Ix6CxIn/K74tfrlANhIDMynRIFpNpd4eCGE=; h=From:Date:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=t9/OiXKWSFullYGHCcIya2u5dzuop4OQbpffCsWdRyslZ8TKv/IhQTLCEK23sz5N4tyMdoJNAyUi33h+BEkizwLX+zCzuUeZy0tP5nnuiPHqEkrTPecRlQ2tq3/Tjekc2cZervCFYy03XVVgswAC5csDBMfYZKrxamJGY6Z1S9w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=k/i5uTze; arc=none smtp.client-ip=74.125.224.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="k/i5uTze" Received: by mail-yx1-f51.google.com with SMTP id 956f58d0204a3-662bb8b1f93so4130290d50.1 for ; Mon, 22 Jun 2026 06:11:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1782133911; x=1782738711; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:from:to:cc:subject:date:message-id:reply-to; bh=XkaEWxUJkCuHp/17+ud4oWXJ3qqAKnltzqopfMTtFIs=; b=k/i5uTzeJQR4+7Wet36cQgSo4sxL7JHnWkI80+xtkrP/9oBTFyHZ8X3t1Q2CnMTDp6 Psigzn+fygxUIibpKJV8vugNaeMafjx2dbtYSsLvity3z1Woqbw59/7qieJHFyH4Adan iIRyDi8CMOCz/az4EFMKhiAYGCpfEhizDTOzb65ymOvZsLNvI1F9BvcwvMSLbbcXXmc6 lyPBLK7m1zPmKDIwdT1nVVOesfeemXdJZa83ea/kP7geAEZB8UZ24UFkA43weVCRdqNX kqhXI7Jym8KGVdZHNk1qUH7mqWCLBnaTI9Bl96kF6LQYh6lfzYB59dUz5+jAHbpHTf5O SP5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782133911; x=1782738711; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=XkaEWxUJkCuHp/17+ud4oWXJ3qqAKnltzqopfMTtFIs=; b=oCDraLiOVIVuy8RhRBdxLwLSpLHAiCCX63ymjDelpbTLZvW9MpnL3k+IiU40jxQWaG AUV5O13KHpQYP1fG7eTgupKC8DvQy0EJECKUN1ZyY5KK3Z38fFwRpPYEX0x8i5cetdMk jnzlSFxHP0hEwBaE/5iZsZxH7QdwqDVUbAm4kxAjpDHNdkdL8AKP+Pn0dfmARFnoYPtf 3l95i8C/pldF2/MklTM8nmdmmt2HJrk7iTY+wjDhWP/n4xJXHgP5/aLG2obr6i+cFKny +8BnafsGy6byttDP6dyNZfkxFpif0BZ/w/BS2wuYdltQA831ILRYS1goryUwLYtXALKc CCGg== X-Forwarded-Encrypted: i=1; AHgh+Roo4Mqd7U51WBLlN3LOGuFHD+ajBUmePw6/hlxZmAgEv3KxAkM/X9V/14ccaDdcT03udBHXHLlofJbxstk=@vger.kernel.org X-Gm-Message-State: AOJu0YzFXnG2MgAHSXRDXHvKpue52I7XkT0sPiU+JtBMXXbiehmIVtIP FNajsi7fZB7wQFt3UFZDoTrooG3UvC1h/yh/IpVvDYmT1K5JT0QkrzkU X-Gm-Gg: AfdE7cnv/S2G2lXAi/tcDFHu0oncRvwhumZWsMDHzD3tgl3HG4xcDb+TWsMtjJvlo01 USq+08khOWjz54WpoeHvrJNKiBhrdC+FARlX42JPmbciY+JjbomeTqzmEwxbQeVSn+tAfe0rvHR sg7ASDFp81nlPrkHTjMdQNHRjwy76qvYD33UrBbiPAVutvcxEnBWTL1sXFay+h7knRc32gAJH9y aCNH6tiryd7BnMa+rKBqUaabg9GH4psgDyKeCQWtVGz8892r4w8SnpsOMbYuPpK6Snt1+CpBOEY JeQ43ppJi25ea0chamY3BMUhf8RvXrSqxsFIBu6vWLEbLNfiyqYjDTGbYzv9LekT4LeQWCQRGS0 KIZGR5PqPKuwnSGHlJBLzrYgXm2OX09tg5j1MB6PkiCOr1wxRj44AzTrbpgP25OxlkyFP+yaE+m pchOvHTb8= X-Received: by 2002:a05:690e:120c:b0:660:54e4:5dd1 with SMTP id 956f58d0204a3-6630333ac1bmr11505521d50.44.1782133910591; Mon, 22 Jun 2026 06:11:50 -0700 (PDT) Received: from localhost ([38.101.158.131]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-66314ac3f96sm3600882d50.1.2026.06.22.06.11.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jun 2026 06:11:50 -0700 (PDT) From: Yury Norov X-Google-Original-From: Yury Norov Date: Mon, 22 Jun 2026 09:11:49 -0400 To: Steven Rostedt Cc: "Christophe Leroy (CS GROUP)" , 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: References: <20260621093430.264983361@kernel.org> <20260622090826.20efadb3@fedora> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260622090826.20efadb3@fedora> On Mon, Jun 22, 2026 at 09:08:26AM -0400, Steven Rostedt wrote: > 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. I re-run compilation is a more strict environment, and the difference is negligible.