Re: [PATCH] ACPI: small formatting fixes
From: Pavel Machek
Date: Mon Dec 12 2016 - 18:08:46 EST
On Mon 2016-12-12 14:32:12, Joe Perches wrote:
> On Mon, 2016-12-12 at 23:22 +0100, Pavel Machek wrote:
> > On Mon 2016-12-12 10:39:15, Joe Perches wrote:
> > > On Mon, 2016-12-12 at 09:56 -0800, Nick Desaulniers wrote:
> > > > A quick cleanup that passes scripts/checkpatch.pl -f <file>.
> > > > diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
> > > It's generally better not to convert
> > > these printk(KERN_DEBUG uses.
> > >
> > > There are behavior differences between
> > > printk(KERN_DEBUG ...);
> > > and
> > > pr_debug(...);
> > >
> > > The first will always be emitted as long
> > > as the console level is appropriate.
> > >
> > > The second depends on a #define DEBUG
> > > before it gets emitted or a kernel
> > > with CONFIG_DYNAMIC_DEBUG enabled and
> > > this entry specifically enabled in the
> > > control file.
> > Hmm. Perhaps pr_debug should be called pr_c_debug() or something? This
> > is rather nice trap.
> Yeah, I've suggested veriants like pr_always_debug (from 2009)
I'd very much like to see it other way around.
pr_err is equivalent to printk(KERN_ERR)
pr_warn is equivalent to printk(KERN_WARN)
pr_debug _NOT_ beging equivalent to printk(KERN_DEBUG) is a trap :-(.
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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