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authorAaro Koskinen <aaro.koskinen@iki.fi>2016-10-12 08:45:05 +0530
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-10-12 21:01:18 +0200
commit899bb6642f2a2f2cd3f77abd6c5a14550e3b37e6 (patch)
tree92e040a386c695f13a5222003687006715bf03ae /include/linux/cpufreq.h
parent3954517e2f083c8aeb52bfd467b7b2c164232ffc (diff)
downloadlinux-899bb6642f2a2f2cd3f77abd6c5a14550e3b37e6.tar.gz
cpufreq: skip invalid entries when searching the frequency
Skip invalid entries when searching the frequency. This fixes cpufreq at least on loongson2 MIPS board. Fixes: da0c6dc00c69 (cpufreq: Handle sorted frequency tables more efficiently) Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 4.8+ <stable@vger.kernel.org> # 4.8+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpufreq.h')
-rw-r--r--include/linux/cpufreq.h104
1 files changed, 52 insertions, 52 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 631ba33bbe9f..5fa55fc56e18 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -639,19 +639,19 @@ static inline int cpufreq_table_find_index_al(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
+ struct cpufreq_frequency_table *pos, *best = table - 1;
unsigned int freq;
- int i, best = -1;
- for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) {
- freq = table[i].frequency;
+ cpufreq_for_each_valid_entry(pos, table) {
+ freq = pos->frequency;
if (freq >= target_freq)
- return i;
+ return pos - table;
- best = i;
+ best = pos;
}
- return best;
+ return best - table;
}
/* Find lowest freq at or above target in a table in descending order */
@@ -659,28 +659,28 @@ static inline int cpufreq_table_find_index_dl(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
+ struct cpufreq_frequency_table *pos, *best = table - 1;
unsigned int freq;
- int i, best = -1;
- for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) {
- freq = table[i].frequency;
+ cpufreq_for_each_valid_entry(pos, table) {
+ freq = pos->frequency;
if (freq == target_freq)
- return i;
+ return pos - table;
if (freq > target_freq) {
- best = i;
+ best = pos;
continue;
}
/* No freq found above target_freq */
- if (best == -1)
- return i;
+ if (best == table - 1)
+ return pos - table;
- return best;
+ return best - pos;
}
- return best;
+ return best - pos;
}
/* Works only on sorted freq-tables */
@@ -700,28 +700,28 @@ static inline int cpufreq_table_find_index_ah(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
+ struct cpufreq_frequency_table *pos, *best = table - 1;
unsigned int freq;
- int i, best = -1;
- for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) {
- freq = table[i].frequency;
+ cpufreq_for_each_valid_entry(pos, table) {
+ freq = pos->frequency;
if (freq == target_freq)
- return i;
+ return pos - table;
if (freq < target_freq) {
- best = i;
+ best = pos;
continue;
}
/* No freq found below target_freq */
- if (best == -1)
- return i;
+ if (best == table - 1)
+ return pos - table;
- return best;
+ return best - table;
}
- return best;
+ return best - table;
}
/* Find highest freq at or below target in a table in descending order */
@@ -729,19 +729,19 @@ static inline int cpufreq_table_find_index_dh(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
+ struct cpufreq_frequency_table *pos, *best = table - 1;
unsigned int freq;
- int i, best = -1;
- for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) {
- freq = table[i].frequency;
+ cpufreq_for_each_valid_entry(pos, table) {
+ freq = pos->frequency;
if (freq <= target_freq)
- return i;
+ return pos - table;
- best = i;
+ best = pos;
}
- return best;
+ return best - table;
}
/* Works only on sorted freq-tables */
@@ -761,32 +761,32 @@ static inline int cpufreq_table_find_index_ac(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
+ struct cpufreq_frequency_table *pos, *best = table - 1;
unsigned int freq;
- int i, best = -1;
- for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) {
- freq = table[i].frequency;
+ cpufreq_for_each_valid_entry(pos, table) {
+ freq = pos->frequency;
if (freq == target_freq)
- return i;
+ return pos - table;
if (freq < target_freq) {
- best = i;
+ best = pos;
continue;
}
/* No freq found below target_freq */
- if (best == -1)
- return i;
+ if (best == table - 1)
+ return pos - table;
/* Choose the closest freq */
- if (target_freq - table[best].frequency > freq - target_freq)
- return i;
+ if (target_freq - best->frequency > freq - target_freq)
+ return pos - table;
- return best;
+ return best - table;
}
- return best;
+ return best - table;
}
/* Find closest freq to target in a table in descending order */
@@ -794,32 +794,32 @@ static inline int cpufreq_table_find_index_dc(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
+ struct cpufreq_frequency_table *pos, *best = table - 1;
unsigned int freq;
- int i, best = -1;
- for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) {
- freq = table[i].frequency;
+ cpufreq_for_each_valid_entry(pos, table) {
+ freq = pos->frequency;
if (freq == target_freq)
- return i;
+ return pos - table;
if (freq > target_freq) {
- best = i;
+ best = pos;
continue;
}
/* No freq found above target_freq */
- if (best == -1)
- return i;
+ if (best == table - 1)
+ return pos - table;
/* Choose the closest freq */
- if (table[best].frequency - target_freq > target_freq - freq)
- return i;
+ if (best->frequency - target_freq > target_freq - freq)
+ return pos - table;
- return best;
+ return best - table;
}
- return best;
+ return best - table;
}
/* Works only on sorted freq-tables */