Re: [PATCH 0/2] tracing: Move trace_printk.h out of kernel.h

Yury Norov <[email protected]> Mon, 22 Jun 2026 09:11:49 -0400

Newsgroups	gmane.comp.file-systems.ext4,gmane.linux.kernel,gmane.linux.documentation,gmane.linux.kbuild.devel,gmane.linux.ports.ppc64.devel,gmane.comp.video.dri.devel,gmane.linux.ports.arm.kernel,gmane.linux.drivers.rdma,gmane.linux.usb.general,gmane.linux.nfs,gmane.comp.emulators.kvm.devel,gmane.comp.freedesktop.xorg.drivers.intel
Message-ID	<ajk0lT9P0SeuD94j@yury>

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)" <[email protected]> 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.