The patch titled
cpufreq: add sysfs knob for toggling core performance boost
has been added to the -mm tree. Its filename is
cpufreq-add-sysfs-knob-for-toggling-core-performance-boost.patch
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------------------------------------------------------
Subject: cpufreq: add sysfs knob for toggling core performance boost
From: Mark Langsdorf <mark.langsdorf@xxxxxxx>
Signed-off-by: Borislav Petkov <borislav.petkov@xxxxxxx>
Tested-by: Mark Langsdorf <mark.langsdorf@xxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/cpufreq/cpufreq.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff -puN drivers/cpufreq/cpufreq.c~cpufreq-add-sysfs-knob-for-toggling-core-performance-boost drivers/cpufreq/cpufreq.c
--- a/drivers/cpufreq/cpufreq.c~cpufreq-add-sysfs-knob-for-toggling-core-performance-boost
+++ a/drivers/cpufreq/cpufreq.c
@@ -662,6 +662,30 @@ static ssize_t show_bios_limit(struct cp
return sprintf(buf, "%u\n", policy->cpuinfo.max_freq);
}
+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))
+ policy->flags.cpb = val;
+ else
+ return -EINVAL;
+
+ ret = __cpufreq_driver_target(policy, policy->cur, CPUFREQ_RELATION_H);
+ if (ret)
+ return -EINVAL;
+
+ return count;
+}
+
+static ssize_t show_cpb(struct cpufreq_policy *policy, char *buf)
+{
+ return sprintf(buf, "%u\n", policy->flags.cpb);
+}
+
#define define_one_ro(_name) \
static struct freq_attr _name = \
__ATTR(_name, 0444, show_##_name, NULL)
@@ -688,6 +712,7 @@ define_one_rw(scaling_min_freq);
define_one_rw(scaling_max_freq);
define_one_rw(scaling_governor);
define_one_rw(scaling_setspeed);
+define_one_rw(cpb);
static struct attribute *default_attrs[] = {
&cpuinfo_min_freq.attr,
@@ -701,6 +726,7 @@ static struct attribute *default_attrs[]
&scaling_driver.attr,
&scaling_available_governors.attr,
&scaling_setspeed.attr,
+ &cpb.attr,
NULL
};
_
Patches currently in -mm which might be from mark.langsdorf@xxxxxxx are
cpufreq-add-aperf-mperf-support-for-amd-processors.patch
cpufreq-powernow-k8-add-core-performance-boost-support.patch
cpufreq-add-sysfs-knob-for-toggling-core-performance-boost.patch
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