linux-kernel - Re: [PATCH:resend] rt: Remove CONFIG_STACK_TRACER from DEBUG

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Date:	Tue, 27 Apr 2010 14:34:44 -0500
From:	Clark Williams <williams@...hat.com>
To:	John Kacur <jkacur@...hat.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	lkml <linux-kernel@...r.kernel.org>,
	rt-users <linux-rt-users@...r.kernel.org>
Subject: Re: [PATCH:resend] rt: Remove CONFIG_STACK_TRACER from DEBUG_COUNT,
 and fix reminder block

On Tue, 27 Apr 2010 21:25:42 +0200
John Kacur <jkacur@...hat.com> wrote:

> This fix does two things.
> 
> 1. It reverts commit 3e39399ef4a742d994570488994be93ef17d4ef5.
> - The above commit added back a warning about CONFIG_STACK_TRACER
> NOT because the warning was necessary but to fix-up a problem where you could
> get an empty REMINDER block in the demg.
> 
> However, CONFIG_STACK_TRACER really should not be in the reminder block.
> Even when configured-in it is not enabled, and thus has neglible impact.
> 
> 2. It removes CONFIG_STACK_TRACER from DEBUG_COUNT which is the proper fix
> for the empty REMINDER block problem.
> 
> This patch is for rt only. (this code doesn't exist in mainline)
> 
> Signed-off-by: John Kacur <jkacur@...hat.com>
> Acked-by: Steven Rostedt <rostedt@...dmis.org>
> ---
>  init/main.c |    5 +----
>  1 files changed, 1 insertions(+), 4 deletions(-)
> 
> diff --git a/init/main.c b/init/main.c
> index 592c16a..f26cb63 100644
> --- a/init/main.c
> +++ b/init/main.c
> @@ -908,7 +908,7 @@ static int __init kernel_init(void * unused)
>  	WARN_ON(irqs_disabled());
>  #endif
>  
> -#define DEBUG_COUNT (defined(CONFIG_DEBUG_RT_MUTEXES) + defined(CONFIG_IRQSOFF_TRACER) + defined(CONFIG_PREEMPT_TRACER) + defined(CONFIG_STACK_TRACER) + defined(CONFIG_INTERRUPT_OFF_HIST) + defined(CONFIG_PREEMPT_OFF_HIST) + defined(CONFIG_WAKEUP_LATENCY_HIST) + defined(CONFIG_DEBUG_SLAB) + defined(CONFIG_DEBUG_PAGEALLOC) + defined(CONFIG_LOCKDEP) + (defined(CONFIG_FTRACE) - defined(CONFIG_FTRACE_MCOUNT_RECORD)))
> +#define DEBUG_COUNT (defined(CONFIG_DEBUG_RT_MUTEXES) + defined(CONFIG_IRQSOFF_TRACER) + defined(CONFIG_PREEMPT_TRACER) + defined(CONFIG_INTERRUPT_OFF_HIST) + defined(CONFIG_PREEMPT_OFF_HIST) + defined(CONFIG_WAKEUP_LATENCY_HIST) + defined(CONFIG_DEBUG_SLAB) + defined(CONFIG_DEBUG_PAGEALLOC) + defined(CONFIG_LOCKDEP) + (defined(CONFIG_FTRACE) - defined(CONFIG_FTRACE_MCOUNT_RECORD)))
>  
>  #if DEBUG_COUNT > 0
>  	printk(KERN_ERR "*****************************************************************************\n");
> @@ -928,9 +928,6 @@ static int __init kernel_init(void * unused)
>  #ifdef CONFIG_PREEMPT_TRACER
>  	printk(KERN_ERR "*        CONFIG_PREEMPT_TRACER                                              *\n");
>  #endif
> -#ifdef CONFIG_STACK_TRACER
> -	printk(KERN_ERR "*        CONFIG_STACK_TRACER                                                *\n");
> -#endif
>  #if defined(CONFIG_FTRACE) && !defined(CONFIG_FTRACE_MCOUNT_RECORD)
>  	printk(KERN_ERR "*        CONFIG_FTRACE                                                      *\n");
>  #endif
> -- 
> 1.6.6.1
> 

Acked-by: Clark Williams <williams@...hat.com>


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