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authorLinus Torvalds <torvalds@linux-foundation.org>2018-02-09 09:40:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-09 09:40:33 -0800
commita051c14b8db35cb269e9d91e11fc3573b6f7475d (patch)
tree35d603e7619b2a64d55fd9529519eac629b24173 /include
parentf1517df8701c9f12dae9ce7f43a5d300a6917619 (diff)
parent616f16093d852215f6a1188de1bafdc1f8892924 (diff)
Merge tag 'pm-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki: "These are mostly fixes and cleanups and removal of the no longer needed at32ap-cpufreq driver. Specifics: - Drop the at32ap-cpufreq driver which is useless after the removal of the corresponding arch (Corentin LABBE). - Fix a regression from the 4.14 cycle in the APM idle driver by making it initialize the polling state properly (Rafael Wysocki). - Fix a crash on failing system suspend due to a missing check in the cpufreq core (Bo Yan). - Make the intel_pstate driver initialize the hardware-managed P-state control (HWP) feature on CPU0 upon resume from system suspend if HWP had been enabled before the system was suspended (Chen Yu). - Fix up the SCPI cpufreq driver after recent changes (Sudeep Holla, Wei Yongjun). - Avoid pointer subtractions during frequency table walks in cpufreq (Dominik Brodowski). - Avoid the check for ProcFeedback in ST/CZ in the cpufreq driver for AMD processors and add a MODULE_ALIAS for cpufreq on ARM IMX (Akshu Agrawal, Nicolas Chauvet). - Fix the prototype of swsusp_arch_resume() on x86 (Arnd Bergmann). - Fix up the parsing of power domains DT data (Ulf Hansson)" * tag 'pm-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: arm: imx: Add MODULE_ALIAS for cpufreq cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx() cpufreq: intel_pstate: Enable HWP during system resume on CPU0 cpufreq: scpi: fix error return code in scpi_cpufreq_init() x86: hibernate: fix swsusp_arch_resume() prototype PM / domains: Fix up domain-idle-states OF parsing cpufreq: scpi: fix static checker warning cdev isn't an ERR_PTR cpufreq: remove at32ap-cpufreq cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ x86: PM: Make APM idle driver initialize polling state cpufreq: Skip cpufreq resume if it's not suspended
Diffstat (limited to 'include')
-rw-r--r--include/linux/cpufreq.h125
1 files changed, 79 insertions, 46 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 065f3a8eb486..21e8d248d956 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -629,6 +629,18 @@ static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
for (pos = table; pos->frequency != CPUFREQ_TABLE_END; pos++)
/*
+ * cpufreq_for_each_entry_idx - iterate over a cpufreq_frequency_table
+ * with index
+ * @pos: the cpufreq_frequency_table * to use as a loop cursor.
+ * @table: the cpufreq_frequency_table * to iterate over.
+ * @idx: the table entry currently being processed
+ */
+
+#define cpufreq_for_each_entry_idx(pos, table, idx) \
+ for (pos = table, idx = 0; pos->frequency != CPUFREQ_TABLE_END; \
+ pos++, idx++)
+
+/*
* cpufreq_for_each_valid_entry - iterate over a cpufreq_frequency_table
* excluding CPUFREQ_ENTRY_INVALID frequencies.
* @pos: the cpufreq_frequency_table * to use as a loop cursor.
@@ -641,6 +653,21 @@ static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
continue; \
else
+/*
+ * cpufreq_for_each_valid_entry_idx - iterate with index over a cpufreq
+ * frequency_table excluding CPUFREQ_ENTRY_INVALID frequencies.
+ * @pos: the cpufreq_frequency_table * to use as a loop cursor.
+ * @table: the cpufreq_frequency_table * to iterate over.
+ * @idx: the table entry currently being processed
+ */
+
+#define cpufreq_for_each_valid_entry_idx(pos, table, idx) \
+ cpufreq_for_each_entry_idx(pos, table, idx) \
+ if (pos->frequency == CPUFREQ_ENTRY_INVALID) \
+ continue; \
+ else
+
+
int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table);
@@ -667,19 +694,20 @@ 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;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq >= target_freq)
- return pos - table;
+ return idx;
- best = pos;
+ best = idx;
}
- return best - table;
+ return best;
}
/* Find lowest freq at or above target in a table in descending order */
@@ -687,28 +715,29 @@ 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;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq == target_freq)
- return pos - table;
+ return idx;
if (freq > target_freq) {
- best = pos;
+ best = idx;
continue;
}
/* No freq found above target_freq */
- if (best == table - 1)
- return pos - table;
+ if (best == -1)
+ return idx;
- return best - table;
+ return best;
}
- return best - table;
+ return best;
}
/* Works only on sorted freq-tables */
@@ -728,28 +757,29 @@ 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;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq == target_freq)
- return pos - table;
+ return idx;
if (freq < target_freq) {
- best = pos;
+ best = idx;
continue;
}
/* No freq found below target_freq */
- if (best == table - 1)
- return pos - table;
+ if (best == -1)
+ return idx;
- return best - table;
+ return best;
}
- return best - table;
+ return best;
}
/* Find highest freq at or below target in a table in descending order */
@@ -757,19 +787,20 @@ 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;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq <= target_freq)
- return pos - table;
+ return idx;
- best = pos;
+ best = idx;
}
- return best - table;
+ return best;
}
/* Works only on sorted freq-tables */
@@ -789,32 +820,33 @@ 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;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq == target_freq)
- return pos - table;
+ return idx;
if (freq < target_freq) {
- best = pos;
+ best = idx;
continue;
}
/* No freq found below target_freq */
- if (best == table - 1)
- return pos - table;
+ if (best == -1)
+ return idx;
/* Choose the closest freq */
- if (target_freq - best->frequency > freq - target_freq)
- return pos - table;
+ if (target_freq - table[best].frequency > freq - target_freq)
+ return idx;
- return best - table;
+ return best;
}
- return best - table;
+ return best;
}
/* Find closest freq to target in a table in descending order */
@@ -822,32 +854,33 @@ 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;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq == target_freq)
- return pos - table;
+ return idx;
if (freq > target_freq) {
- best = pos;
+ best = idx;
continue;
}
/* No freq found above target_freq */
- if (best == table - 1)
- return pos - table;
+ if (best == -1)
+ return idx;
/* Choose the closest freq */
- if (best->frequency - target_freq > target_freq - freq)
- return pos - table;
+ if (table[best].frequency - target_freq > target_freq - freq)
+ return idx;
- return best - table;
+ return best;
}
- return best - table;
+ return best;
}
/* Works only on sorted freq-tables */

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