---

yaml
---
r: 132667
b: refs/heads/master
c: 9411b4e
h: refs/heads/master
i:
  132665: b9f2930
  132663: 0b0bb39
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 57f4fa699195b761cbea90db5e38b4bc15610c7c
+refs/heads/master: 9411b4ef7fcb534fe1582fe02738254e398dd931

trunk/Documentation/cpu-freq/governors.txt

@@ -119,8 +119,14 @@ want the kernel to look at the CPU usage and to make decisions on
 what to do about the frequency.  Typically this is set to values of
 around '10000' or more.
 
-show_sampling_rate_(min|max): the minimum and maximum sampling rates
-available that you may set 'sampling_rate' to.
+show_sampling_rate_(min|max): THIS INTERFACE IS DEPRECATED, DON'T USE IT.
+You can use wider ranges now and the general
+cpuinfo_transition_latency variable (cmp. with user-guide.txt) can be
+used to obtain exactly the same info:
+show_sampling_rate_min = transtition_latency * 500    / 1000
+show_sampling_rate_max = transtition_latency * 500000 / 1000
+(divided by 1000 is to illustrate that sampling rate is in us and
+transition latency is exported ns).
 
 up_threshold: defines what the average CPU usage between the samplings
 of 'sampling_rate' needs to be for the kernel to make a decision on

trunk/drivers/cpufreq/cpufreq_conservative.c

@@ -140,11 +140,26 @@ static struct notifier_block dbs_cpufreq_notifier_block = {
 /************************** sysfs interface ************************/
 static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
 {
+	static int print_once;
+
+	if (!print_once) {
+		printk(KERN_INFO "CPUFREQ: conservative sampling_rate_max "
+		       "sysfs file is deprecated - used by: %s\n",
+		       current->comm);
+		print_once = 1;
+	}
 	return sprintf(buf, "%u\n", MAX_SAMPLING_RATE);
 }
 
 static ssize_t show_sampling_rate_min(struct cpufreq_policy *policy, char *buf)
 {
+	static int print_once;
+
+	if (!print_once) {
+		printk(KERN_INFO "CPUFREQ: conservative sampling_rate_max "
+		       "sysfs file is deprecated - used by: %s\n", current->comm);
+		print_once = 1;
+	}
 	return sprintf(buf, "%u\n", MIN_SAMPLING_RATE);
 }
 

trunk/drivers/cpufreq/cpufreq_ondemand.c

@@ -21,6 +21,7 @@
 #include <linux/hrtimer.h>
 #include <linux/tick.h>
 #include <linux/ktime.h>
+#include <linux/sched.h>
 
 /*
  * dbs is used in this file as a shortform for demandbased switching
@@ -203,11 +204,27 @@ static void ondemand_powersave_bias_init(void)
 /************************** sysfs interface ************************/
 static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
 {
+	static int print_once;
+
+	if (!print_once) {
+		printk(KERN_INFO "CPUFREQ: ondemand sampling_rate_max "
+		       "sysfs file is deprecated - used by: %s\n",
+		       current->comm);
+		print_once = 1;
+	}
 	return sprintf(buf, "%u\n", MAX_SAMPLING_RATE);
 }
 
 static ssize_t show_sampling_rate_min(struct cpufreq_policy *policy, char *buf)
 {
+	static int print_once;
+
+	if (!print_once) {
+		printk(KERN_INFO "CPUFREQ: ondemand sampling_rate_min "
+		       "sysfs file is deprecated - used by: %s\n",
+		       current->comm);
+		print_once = 1;
+	}
 	return sprintf(buf, "%u\n", MIN_SAMPLING_RATE);
 }