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authorLinus Torvalds <torvalds@linux-foundation.org>2010-04-24 14:35:21 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-04-24 14:35:21 -0400
commitddc9b34c3b3bc063a7d9eb891ae09b8f49cfb27e (patch)
treee28d67d3872dce2516c039ccad08fabff076cead /drivers/cpufreq/cpufreq_conservative.c
parent8e500ff8df1223dfb42d6c39d3de1fc216fba1a2 (diff)
parentfd187aaf980c45f1d16a94a846faa68e24de03c8 (diff)
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] use max load in conservative governor [CPUFREQ] fix a lockdep warning
Diffstat (limited to 'drivers/cpufreq/cpufreq_conservative.c')
-rw-r--r--drivers/cpufreq/cpufreq_conservative.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 599a40b25cb0..3a147874a465 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -444,6 +444,7 @@ static struct attribute_group dbs_attr_group_old = {
444static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info) 444static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
445{ 445{
446 unsigned int load = 0; 446 unsigned int load = 0;
447 unsigned int max_load = 0;
447 unsigned int freq_target; 448 unsigned int freq_target;
448 449
449 struct cpufreq_policy *policy; 450 struct cpufreq_policy *policy;
@@ -501,6 +502,9 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
501 continue; 502 continue;
502 503
503 load = 100 * (wall_time - idle_time) / wall_time; 504 load = 100 * (wall_time - idle_time) / wall_time;
505
506 if (load > max_load)
507 max_load = load;
504 } 508 }
505 509
506 /* 510 /*
@@ -511,7 +515,7 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
511 return; 515 return;
512 516
513 /* Check for frequency increase */ 517 /* Check for frequency increase */
514 if (load > dbs_tuners_ins.up_threshold) { 518 if (max_load > dbs_tuners_ins.up_threshold) {
515 this_dbs_info->down_skip = 0; 519 this_dbs_info->down_skip = 0;
516 520
517 /* if we are already at full speed then break out early */ 521 /* if we are already at full speed then break out early */
@@ -538,7 +542,7 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
538 * can support the current CPU usage without triggering the up 542 * can support the current CPU usage without triggering the up
539 * policy. To be safe, we focus 10 points under the threshold. 543 * policy. To be safe, we focus 10 points under the threshold.
540 */ 544 */
541 if (load < (dbs_tuners_ins.down_threshold - 10)) { 545 if (max_load < (dbs_tuners_ins.down_threshold - 10)) {
542 freq_target = (dbs_tuners_ins.freq_step * policy->max) / 100; 546 freq_target = (dbs_tuners_ins.freq_step * policy->max) / 100;
543 547
544 this_dbs_info->requested_freq -= freq_target; 548 this_dbs_info->requested_freq -= freq_target;