[PATCH] (2/3) cpufreq_ondemand - 02_check-rate-and-break-out.diff

[PATCH] (2/3) cpufreq_ondemand - 02_check-rate-and-break-out.diff

[Alexander Clouter]

[-- Attachment #1.1.1: Type: text/plain, Size: 482 bytes --]

Prevents un-necessary cpufreq changes if we are already at min/max

Signed-off-by: Alexander Clouter <alex-kernel@digriz.org.uk>

-- 
 _______________________________________ 
/ Things are not always what they seem. \
|                                       |
\ -- Phaedrus                           /
 --------------------------------------- 
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

[-- Attachment #1.1.2: cpufreq_ondemand-2.6.12-rc3-mm3-02_check-rate-and-break-out.diff --]
[-- Type: text/plain, Size: 878 bytes --]

--- linux-2.6.12-rc3-mm3.orig/drivers/cpufreq/cpufreq_ondemand.c	2005-05-10 22:21:35.370204952 +0100
+++ linux-2.6.12-rc3-mm3/drivers/cpufreq/cpufreq_ondemand.c	2005-05-10 22:22:02.832030120 +0100
@@ -333,6 +333,10 @@
 			usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
 
 	if (idle_ticks < up_idle_ticks) {
+		/* if we are already at full speed then break out early */
+		if (policy->cur == policy->max)
+			return;
+		
 		__cpufreq_driver_target(policy, policy->max, 
 			CPUFREQ_RELATION_H);
 		down_skip[cpu] = 0;
@@ -386,6 +390,10 @@
 			usecs_to_jiffies(freq_down_sampling_rate);
 
 	if (idle_ticks > down_idle_ticks ) {
+		/* if we are already at the lowest speed then break out early */
+		if (policy->cur == policy->min)
+			return;
+		
 		freq_down_step = (5 * policy->max) / 100;
 
 		/* max freq cannot be less than 100. But who knows.... */

[-- Attachment #1.2: Digital signature --]
[-- Type: application/pgp-signature, Size: 189 bytes --]

[-- Attachment #2: Type: text/plain, Size: 147 bytes --]

_______________________________________________
Cpufreq mailing list
Cpufreq@lists.linux.org.uk
http://lists.linux.org.uk/mailman/listinfo/cpufreq

[PATCH] (2/3) cpufreq_ondemand - 02_check-rate-and-break-out.diff

[Alexander Clouter]

[-- Attachment #1.1.1: Type: text/plain, Size: 447 bytes --]

Prevents un-necessary cpufreq changes if we are already at min/max

Signed-off-by: Alexander Clouter <alex-kernel@digriz.org.uk>

-- 
 _________________________________________ 
/ He who lives without folly is less wise \
\ than he believes.                       /
 ----------------------------------------- 
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

[-- Attachment #1.1.2: cpufreq_ondemand-2.6.11-rc3-mm2-02_check-rate-and-break-out.diff --]
[-- Type: text/plain, Size: 884 bytes --]

--- linux-2.6.11-rc3-mm2.orig/drivers/cpufreq/cpufreq_ondemand.c	2005-02-20 11:34:30.901742696 +0000
+++ linux-2.6.11-rc3-mm2/drivers/cpufreq/cpufreq_ondemand.c	2005-02-20 11:36:06.467214536 +0000
@@ -334,6 +334,10 @@
 			sampling_rate_in_HZ(dbs_tuners_ins.sampling_rate);
 
 	if (idle_ticks < up_idle_ticks) {
+		/* if we are already at full speed then break out early */
+		if (policy->cur == policy->max)
+			return;
+		
 		__cpufreq_driver_target(policy, policy->max, 
 			CPUFREQ_RELATION_H);
 		down_skip[cpu] = 0;
@@ -387,6 +391,10 @@
 			sampling_rate_in_HZ(freq_down_sampling_rate);
 
 	if (idle_ticks > down_idle_ticks ) {
+		/* if we are already at the lowest speed then break out early */
+		if (policy->cur == policy->min)
+			return;
+		
 		freq_down_step = (5 * policy->max) / 100;
 
 		/* max freq cannot be less than 100. But who knows.... */

[-- Attachment #1.2: Digital signature --]
[-- Type: application/pgp-signature, Size: 189 bytes --]

[-- Attachment #2: Type: text/plain, Size: 147 bytes --]

_______________________________________________
Cpufreq mailing list
Cpufreq@lists.linux.org.uk
http://lists.linux.org.uk/mailman/listinfo/cpufreq