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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) X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list 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