linux-kernel - Re: [PATCH 2/3] arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c: Use DO

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Date:	Thu, 21 May 2009 19:26:04 -0400
From:	Dave Jones <davej@...hat.com>
To:	Joe Perches <joe@...ches.com>
Cc:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...e.de>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	x86@...r.kernel.org, Len Brown <len.brown@...el.com>,
	Mike Travis <travis@....com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Thomas Gleixner <tglx@...utronix.de>,
	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>
Subject: Re: [PATCH 2/3] arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c: Use
	DO_ONCE & spelling fix

On Thu, May 21, 2009 at 04:00:23PM -0700, Joe Perches wrote:
 > Allows removal of printk_once.
 > 
 > Signed-off-by: Joe Perches <joe@...ches.com>
 > ---
 >  arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c |    4 ++--
 >  1 files changed, 2 insertions(+), 2 deletions(-)
 > 
 > diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
 > index 208ecf6..f569cff 100644
 > --- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
 > +++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
 > @@ -693,8 +693,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 >  	if (perf->control_register.space_id == ACPI_ADR_SPACE_FIXED_HARDWARE &&
 >  	    policy->cpuinfo.transition_latency > 20 * 1000) {
 >  		policy->cpuinfo.transition_latency = 20 * 1000;
 > -			printk_once(KERN_INFO "Capping off P-state tranision"
 > -				    " latency at 20 uS\n");
 > +		DO_ONCE(printk(KERN_INFO
 > +			       "P-state transition latency capped at 20 uS\n"));
 
ewww. This looks pretty ugly to me. Anyone else?

	Dave

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