linux-kernel - Re: [PATCH] x86_64: remove empty lines from stack traces/oopses

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Message-ID: <20080815152555.GJ10029@elte.hu>
Date:	Fri, 15 Aug 2008 17:25:55 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	akpm@...l.org, mingo@...hat.com, linux-kernel@...r.kernel.org,
	ak@...e.de, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [PATCH] x86_64: remove empty lines from stack traces/oopses


* Alexey Dobriyan <adobriyan@...il.com> wrote:

> On Mon, Aug 11, 2008 at 07:02:19PM +0200, Ingo Molnar wrote:
> > * Alexey Dobriyan <adobriyan@...il.com> wrote:
> > 
> > >  show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
> > >  		unsigned long *stack, unsigned long bp, char *log_lvl)
> > >  {
> > > -	printk("\nCall Trace:\n");
> > > +	printk("Call Trace:\n");
> > >  	dump_trace(task, regs, stack, bp, &print_trace_ops, log_lvl);
> > > -	printk("\n");
> > >  }
> > 
> > hm, it's nice to have stack traces stand out a bit, and to not get the 
> > 'Call Trace' embedded in the middle of a printk (which happens to crash 
> > or produce a stack dump).
> 
> Sometimes all you have is 80x25 or just screenshot from some stupid windows
> monitoring program.

> > just to make sure i get the gist of your change, do you have a 
> > 'before' and 'after' sample oops, so that we can see the difference?
> 
> Any recent oops with and without empty lines after Call trace: and 
> after calltrace.

ok - i've queued up your fix in tip/x86/debug.

Arjan, can the removal of empty newlines break the kerneloops.org 
parser?

	Ingo
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