linux-kernel - Re: [PATCH] include KERN_* constant in printk calls

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Date:	Wed, 20 May 2009 10:37:19 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	peterz@...radead.org
Subject: Re: [PATCH] include KERN_* constant in printk calls


* Chris Sanford <crsanford@...il.com> wrote:

> On Tue, May 19 09 11:00, Ingo Molnar wrote:
> > 
> > * Chris Sanford <crsanford@...il.com> wrote:
> > 
> > > Add the KERN_CONT constant to two printk calls.
> > > 
> > > Signed-off-by: Chris Sanford <crsanford@...il.com>
> > > 
> > > ---
> > > 
> > > 
> > > diff --git a/kernel/sched.c b/kernel/sched.c
> > > index 26efa47..6a2ed16 100644
> > > --- a/kernel/sched.c
> > > +++ b/kernel/sched.c
> > > @@ -7319,7 +7319,7 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
> > >  	printk(KERN_DEBUG "%*s domain %d: ", level, "", level);
> > >  
> > >  	if (!(sd->flags & SD_LOAD_BALANCE)) {
> > > -		printk("does not load-balance\n");
> > > +		printk(KERN_CONT "does not load-balance\n");
> > >  		if (sd->parent)
> > >  			printk(KERN_ERR "ERROR: !SD_LOAD_BALANCE domain"
> > >  					" has parent");
> > > @@ -7340,7 +7340,7 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
> > >  	printk(KERN_DEBUG "%*s groups:", level + 1, "");
> > >  	do {
> > >  		if (!group) {
> > > -			printk("\n");
> > > +			printk(KERN_CONT "\n");
> > >  			printk(KERN_ERR "ERROR: group is NULL\n");
> > >  			break;
> > 
> > Please use pr_cont() - and while at it, perhaps convert all other 
> > printk()s in sched.c from KERN_* to the pr_*() notation as well?
> > 
> > Thanks,
> > 
> > 	Ingo
> > --
> 
> The KERN_DEBUG constant is used 5 times when DEBUG is undefined. 
> Doing a straight conversion from printk(KERN_DEBUG to pr_debug( 
> will result in no messages being printed. Should these calls have 
> a different message type, should DEBUG be defined, or should 
> something else be done?

good point - i think it's fine to change it to pr_info().

	Ingo
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