cpupower: Move print_speed function into misc helper

The print_speed can be as a common function, and expose it into misc
helper header. Then it can be used on other helper files as well.

Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Author: huangrui

tools/power/cpupower/utils/cpufreq-info.c

@@ -84,43 +84,6 @@ static void proc_cpufreq_output(void)
 }
 
 static int no_rounding;
-static void print_speed(unsigned long speed)
-{
-	unsigned long tmp;
-
-	if (no_rounding) {
-		if (speed > 1000000)
-			printf("%u.%06u GHz", ((unsigned int) speed/1000000),
-				((unsigned int) speed%1000000));
-		else if (speed > 1000)
-			printf("%u.%03u MHz", ((unsigned int) speed/1000),
-				(unsigned int) (speed%1000));
-		else
-			printf("%lu kHz", speed);
-	} else {
-		if (speed > 1000000) {
-			tmp = speed%10000;
-			if (tmp >= 5000)
-				speed += 10000;
-			printf("%u.%02u GHz", ((unsigned int) speed/1000000),
-				((unsigned int) (speed%1000000)/10000));
-		} else if (speed > 100000) {
-			tmp = speed%1000;
-			if (tmp >= 500)
-				speed += 1000;
-			printf("%u MHz", ((unsigned int) speed/1000));
-		} else if (speed > 1000) {
-			tmp = speed%100;
-			if (tmp >= 50)
-				speed += 100;
-			printf("%u.%01u MHz", ((unsigned int) speed/1000),
-				((unsigned int) (speed%1000)/100));
-		}
-	}
-
-	return;
-}
-
 static void print_duration(unsigned long duration)
 {
 	unsigned long tmp;
@@ -254,11 +217,11 @@ static int get_boost_mode(unsigned int cpu)
 	if (freqs) {
 		printf(_("  boost frequency steps: "));
 		while (freqs->next) {
-			print_speed(freqs->frequency);
+			print_speed(freqs->frequency, no_rounding);
 			printf(", ");
 			freqs = freqs->next;
 		}
-		print_speed(freqs->frequency);
+		print_speed(freqs->frequency, no_rounding);
 		printf("\n");
 		cpufreq_put_available_frequencies(freqs);
 	}
@@ -277,7 +240,7 @@ static int get_freq_kernel(unsigned int cpu, unsigned int human)
 		return -EINVAL;
 	}
 	if (human) {
-		print_speed(freq);
+		print_speed(freq, no_rounding);
 	} else
 		printf("%lu", freq);
 	printf(_(" (asserted by call to kernel)\n"));
@@ -296,7 +259,7 @@ static int get_freq_hardware(unsigned int cpu, unsigned int human)
 		return -EINVAL;
 	}
 	if (human) {
-		print_speed(freq);
+		print_speed(freq, no_rounding);
 	} else
 		printf("%lu", freq);
 	printf(_(" (asserted by call to hardware)\n"));
@@ -316,9 +279,9 @@ static int get_hardware_limits(unsigned int cpu, unsigned int human)
 
 	if (human) {
 		printf(_("  hardware limits: "));
-		print_speed(min);
+		print_speed(min, no_rounding);
 		printf(" - ");
-		print_speed(max);
+		print_speed(max, no_rounding);
 		printf("\n");
 	} else {
 		printf("%lu %lu\n", min, max);
@@ -350,9 +313,9 @@ static int get_policy(unsigned int cpu)
 		return -EINVAL;
 	}
 	printf(_("  current policy: frequency should be within "));
-	print_speed(policy->min);
+	print_speed(policy->min, no_rounding);
 	printf(_(" and "));
-	print_speed(policy->max);
+	print_speed(policy->max, no_rounding);
 
 	printf(".\n                  ");
 	printf(_("The governor \"%s\" may decide which speed to use\n"
@@ -436,7 +399,7 @@ static int get_freq_stats(unsigned int cpu, unsigned int human)
 	struct cpufreq_stats *stats = cpufreq_get_stats(cpu, &total_time);
 	while (stats) {
 		if (human) {
-			print_speed(stats->frequency);
+			print_speed(stats->frequency, no_rounding);
 			printf(":%.2f%%",
 				(100.0 * stats->time_in_state) / total_time);
 		} else
@@ -486,11 +449,11 @@ static void debug_output_one(unsigned int cpu)
 	if (freqs) {
 		printf(_("  available frequency steps:  "));
 		while (freqs->next) {
-			print_speed(freqs->frequency);
+			print_speed(freqs->frequency, no_rounding);
 			printf(", ");
 			freqs = freqs->next;
 		}
-		print_speed(freqs->frequency);
+		print_speed(freqs->frequency, no_rounding);
 		printf("\n");
 		cpufreq_put_available_frequencies(freqs);
 	}

tools/power/cpupower/utils/helpers/helpers.h

@@ -200,5 +200,6 @@ extern struct bitmask *offline_cpus;
 void get_cpustate(void);
 void print_online_cpus(void);
 void print_offline_cpus(void);
+void print_speed(unsigned long speed, int no_rounding);
 
 #endif /* __CPUPOWERUTILS_HELPERS__ */

tools/power/cpupower/utils/helpers/misc.c

@@ -164,3 +164,43 @@ void print_offline_cpus(void)
 		printf(_("cpupower set operation was not performed on them\n"));
 	}
 }
+
+/*
+ * print_speed
+ *
+ * Print the exact CPU frequency with appropriate unit
+ */
+void print_speed(unsigned long speed, int no_rounding)
+{
+	unsigned long tmp;
+
+	if (no_rounding) {
+		if (speed > 1000000)
+			printf("%u.%06u GHz", ((unsigned int)speed / 1000000),
+			       ((unsigned int)speed % 1000000));
+		else if (speed > 1000)
+			printf("%u.%03u MHz", ((unsigned int)speed / 1000),
+			       (unsigned int)(speed % 1000));
+		else
+			printf("%lu kHz", speed);
+	} else {
+		if (speed > 1000000) {
+			tmp = speed % 10000;
+			if (tmp >= 5000)
+				speed += 10000;
+			printf("%u.%02u GHz", ((unsigned int)speed / 1000000),
+			       ((unsigned int)(speed % 1000000) / 10000));
+		} else if (speed > 100000) {
+			tmp = speed % 1000;
+			if (tmp >= 500)
+				speed += 1000;
+			printf("%u MHz", ((unsigned int)speed / 1000));
+		} else if (speed > 1000) {
+			tmp = speed % 100;
+			if (tmp >= 50)
+				speed += 100;
+			printf("%u.%01u MHz", ((unsigned int)speed / 1000),
+			       ((unsigned int)(speed % 1000) / 100));
+		}
+	}
+}