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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-kbuild@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.