This is a note to let you know that I've just added the patch titled
cpufreq: skip invalid entries when searching the frequency
to the 4.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cpufreq-skip-invalid-entries-when-searching-the-frequency.patch
and it can be found in the queue-4.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 899bb6642f2a2f2cd3f77abd6c5a14550e3b37e6 Mon Sep 17 00:00:00 2001
From: Aaro Koskinen <aaro.koskinen@xxxxxx>
Date: Wed, 12 Oct 2016 08:45:05 +0530
Subject: cpufreq: skip invalid entries when searching the frequency
From: Aaro Koskinen <aaro.koskinen@xxxxxx>
commit 899bb6642f2a2f2cd3f77abd6c5a14550e3b37e6 upstream.
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@xxxxxx>
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/cpufreq.h | 104 ++++++++++++++++++++++++------------------------
1 file changed, 52 insertions(+), 52 deletions(-)
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -639,19 +639,19 @@ static inline int cpufreq_table_find_ind
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_ind
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_ind
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_ind
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_ind
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_ind
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 */
Patches currently in stable-queue which might be from aaro.koskinen@xxxxxx are
queue-4.8/cpufreq-skip-invalid-entries-when-searching-the-frequency.patch
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