lkml.org 
[lkml]   [2011]   [Jul]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v4 3/7] acpi-cpufreq: Add support for disabling dynamic overclocking
On 07/18/2011 12:37 PM, Matthew Garrett wrote:
> One feature present in powernow-k8 that isn't present in acpi-cpufreq is
> support for enabling or disabling AMD's core performance boost technology.
> This patch adds that support to acpi-cpufreq, but also extends it to allow
> Intel's dynamic acceleration to be disabled via the same interface. The
> sysfs entry retains the cpb name for compatibility purposes.
>
> Signed-off-by: Matthew Garrett<mjg@redhat.com>
> ---
> drivers/cpufreq/acpi-cpufreq.c | 191 ++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 191 insertions(+), 0 deletions(-)
>

How is this different from setting 3400000 vs 3401000 as the max freq?
(I'm probably missing something about the way that Intel's turbo mode
works.)

> +static ssize_t store_cpb(struct cpufreq_policy *policy, const char *buf,
> + size_t count)
> +{
> + int ret = -EINVAL;
> + unsigned long val = 0;
> +
> + ret = strict_strtoul(buf, 10,&val);
> + if (!ret&& (val == 0 || val == 1)&& cpb_supported)
> + cpb_toggle(val);

Shouldn't this set the flag only on policy->cpu (as opposed to all
online cpus?)

Also, you're missing a space before &&.

--Andy


\
 
 \ /
  Last update: 2011-07-24 05:09    [W:0.088 / U:0.388 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site