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-rw-r--r--drivers/cpufreq/acpi-cpufreq.c3
-rw-r--r--drivers/cpufreq/amd_freq_sensitivity.c3
-rw-r--r--drivers/cpufreq/cpufreq.c10
-rw-r--r--drivers/cpufreq/cpufreq_ondemand.c6
-rw-r--r--drivers/cpufreq/powernv-cpufreq.c4
-rw-r--r--drivers/cpufreq/s5pv210-cpufreq.c2
-rw-r--r--include/linux/cpufreq.h111
7 files changed, 106 insertions, 33 deletions
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index 28467d83c745..3d514b82d055 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -470,7 +470,8 @@ static unsigned int acpi_cpufreq_fast_switch(struct cpufreq_policy *policy,
if (policy->cached_target_freq == target_freq)
index = policy->cached_resolved_idx;
else
- index = cpufreq_table_find_index_dl(policy, target_freq);
+ index = cpufreq_table_find_index_dl(policy, target_freq,
+ false);
entry = &policy->freq_table[index];
next_freq = entry->frequency;
diff --git a/drivers/cpufreq/amd_freq_sensitivity.c b/drivers/cpufreq/amd_freq_sensitivity.c
index d0b10baf039a..6448e03bcf48 100644
--- a/drivers/cpufreq/amd_freq_sensitivity.c
+++ b/drivers/cpufreq/amd_freq_sensitivity.c
@@ -91,7 +91,8 @@ static unsigned int amd_powersave_bias_target(struct cpufreq_policy *policy,
unsigned int index;
index = cpufreq_table_find_index_h(policy,
- policy->cur - 1);
+ policy->cur - 1,
+ relation & CPUFREQ_RELATION_E);
freq_next = policy->freq_table[index].frequency;
}
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 284e940084c6..8069a7bac9ef 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2260,8 +2260,16 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy,
!(cpufreq_driver->flags & CPUFREQ_NEED_UPDATE_LIMITS))
return 0;
- if (cpufreq_driver->target)
+ if (cpufreq_driver->target) {
+ /*
+ * If the driver hasn't setup a single inefficient frequency,
+ * it's unlikely it knows how to decode CPUFREQ_RELATION_E.
+ */
+ if (!policy->efficiencies_available)
+ relation &= ~CPUFREQ_RELATION_E;
+
return cpufreq_driver->target(policy, target_freq, relation);
+ }
if (!cpufreq_driver->target_index)
return -EINVAL;
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index eb4320b619c9..f68cad9abd11 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -83,9 +83,11 @@ static unsigned int generic_powersave_bias_target(struct cpufreq_policy *policy,
freq_avg = freq_req - freq_reduc;
/* Find freq bounds for freq_avg in freq_table */
- index = cpufreq_table_find_index_h(policy, freq_avg);
+ index = cpufreq_table_find_index_h(policy, freq_avg,
+ relation & CPUFREQ_RELATION_E);
freq_lo = freq_table[index].frequency;
- index = cpufreq_table_find_index_l(policy, freq_avg);
+ index = cpufreq_table_find_index_l(policy, freq_avg,
+ relation & CPUFREQ_RELATION_E);
freq_hi = freq_table[index].frequency;
/* Find out how long we have to be in hi and lo freqs */
diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 5a2cf5f91ccb..fddbd1ea1635 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -934,7 +934,7 @@ static void powernv_cpufreq_work_fn(struct work_struct *work)
policy = cpufreq_cpu_get(cpu);
if (!policy)
continue;
- index = cpufreq_table_find_index_c(policy, policy->cur);
+ index = cpufreq_table_find_index_c(policy, policy->cur, false);
powernv_cpufreq_target_index(policy, index);
cpumask_andnot(&mask, &mask, policy->cpus);
cpufreq_cpu_put(policy);
@@ -1022,7 +1022,7 @@ static unsigned int powernv_fast_switch(struct cpufreq_policy *policy,
int index;
struct powernv_smp_call_data freq_data;
- index = cpufreq_table_find_index_dl(policy, target_freq);
+ index = cpufreq_table_find_index_dl(policy, target_freq, false);
freq_data.pstate_id = powernv_freqs[index].driver_data;
freq_data.gpstate_id = powernv_freqs[index].driver_data;
set_pstate(&freq_data);
diff --git a/drivers/cpufreq/s5pv210-cpufreq.c b/drivers/cpufreq/s5pv210-cpufreq.c
index ad7d4f272ddc..76c888ed8d16 100644
--- a/drivers/cpufreq/s5pv210-cpufreq.c
+++ b/drivers/cpufreq/s5pv210-cpufreq.c
@@ -243,7 +243,7 @@ static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index)
new_freq = s5pv210_freq_table[index].frequency;
/* Finding current running level index */
- priv_index = cpufreq_table_find_index_h(policy, old_freq);
+ priv_index = cpufreq_table_find_index_h(policy, old_freq, false);
arm_volt = dvs_conf[index].arm_volt;
int_volt = dvs_conf[index].int_volt;
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 16997e1ff3fe..6d96bd452d55 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -119,6 +119,13 @@ struct cpufreq_policy {
bool strict_target;
/*
+ * Set if inefficient frequencies were found in the frequency table.
+ * This indicates if the relation flag CPUFREQ_RELATION_E can be
+ * honored.
+ */
+ bool efficiencies_available;
+
+ /*
* Preferred average time interval between consecutive invocations of
* the driver to set the frequency for this policy. To be set by the
* scaling driver (0, which is the default, means no preference).
@@ -273,6 +280,8 @@ static inline void cpufreq_stats_record_transition(struct cpufreq_policy *policy
#define CPUFREQ_RELATION_L 0 /* lowest frequency at or above target */
#define CPUFREQ_RELATION_H 1 /* highest frequency below or at target */
#define CPUFREQ_RELATION_C 2 /* closest frequency to target */
+/* relation flags */
+#define CPUFREQ_RELATION_E BIT(2) /* Get if possible an efficient frequency */
struct freq_attr {
struct attribute attr;
@@ -741,6 +750,22 @@ static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
continue; \
else
+/**
+ * cpufreq_for_each_efficient_entry_idx - iterate with index over a cpufreq
+ * frequency_table excluding CPUFREQ_ENTRY_INVALID and
+ * CPUFREQ_INEFFICIENT_FREQ frequencies.
+ * @pos: the &struct cpufreq_frequency_table to use as a loop cursor.
+ * @table: the &struct cpufreq_frequency_table to iterate over.
+ * @idx: the table entry currently being processed.
+ * @efficiencies: set to true to only iterate over efficient frequencies.
+ */
+
+#define cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) \
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) \
+ if (efficiencies && (pos->flags & CPUFREQ_INEFFICIENT_FREQ)) \
+ continue; \
+ else
+
int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table);
@@ -765,14 +790,15 @@ bool policy_has_boost_freq(struct cpufreq_policy *policy);
/* Find lowest freq at or above target in a table in ascending order */
static inline int cpufreq_table_find_index_al(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
struct cpufreq_frequency_table *table = policy->freq_table;
struct cpufreq_frequency_table *pos;
unsigned int freq;
int idx, best = -1;
- cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+ cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
freq = pos->frequency;
if (freq >= target_freq)
@@ -786,14 +812,15 @@ static inline int cpufreq_table_find_index_al(struct cpufreq_policy *policy,
/* Find lowest freq at or above target in a table in descending order */
static inline int cpufreq_table_find_index_dl(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
struct cpufreq_frequency_table *table = policy->freq_table;
struct cpufreq_frequency_table *pos;
unsigned int freq;
int idx, best = -1;
- cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+ cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
freq = pos->frequency;
if (freq == target_freq)
@@ -816,26 +843,30 @@ static inline int cpufreq_table_find_index_dl(struct cpufreq_policy *policy,
/* Works only on sorted freq-tables */
static inline int cpufreq_table_find_index_l(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
target_freq = clamp_val(target_freq, policy->min, policy->max);
if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
- return cpufreq_table_find_index_al(policy, target_freq);
+ return cpufreq_table_find_index_al(policy, target_freq,
+ efficiencies);
else
- return cpufreq_table_find_index_dl(policy, target_freq);
+ return cpufreq_table_find_index_dl(policy, target_freq,
+ efficiencies);
}
/* Find highest freq at or below target in a table in ascending order */
static inline int cpufreq_table_find_index_ah(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
struct cpufreq_frequency_table *table = policy->freq_table;
struct cpufreq_frequency_table *pos;
unsigned int freq;
int idx, best = -1;
- cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+ cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
freq = pos->frequency;
if (freq == target_freq)
@@ -858,14 +889,15 @@ static inline int cpufreq_table_find_index_ah(struct cpufreq_policy *policy,
/* Find highest freq at or below target in a table in descending order */
static inline int cpufreq_table_find_index_dh(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
struct cpufreq_frequency_table *table = policy->freq_table;
struct cpufreq_frequency_table *pos;
unsigned int freq;
int idx, best = -1;
- cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+ cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
freq = pos->frequency;
if (freq <= target_freq)
@@ -879,26 +911,30 @@ static inline int cpufreq_table_find_index_dh(struct cpufreq_policy *policy,
/* Works only on sorted freq-tables */
static inline int cpufreq_table_find_index_h(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
target_freq = clamp_val(target_freq, policy->min, policy->max);
if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
- return cpufreq_table_find_index_ah(policy, target_freq);
+ return cpufreq_table_find_index_ah(policy, target_freq,
+ efficiencies);
else
- return cpufreq_table_find_index_dh(policy, target_freq);
+ return cpufreq_table_find_index_dh(policy, target_freq,
+ efficiencies);
}
/* Find closest freq to target in a table in ascending order */
static inline int cpufreq_table_find_index_ac(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
struct cpufreq_frequency_table *table = policy->freq_table;
struct cpufreq_frequency_table *pos;
unsigned int freq;
int idx, best = -1;
- cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+ cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
freq = pos->frequency;
if (freq == target_freq)
@@ -925,14 +961,15 @@ static inline int cpufreq_table_find_index_ac(struct cpufreq_policy *policy,
/* Find closest freq to target in a table in descending order */
static inline int cpufreq_table_find_index_dc(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
struct cpufreq_frequency_table *table = policy->freq_table;
struct cpufreq_frequency_table *pos;
unsigned int freq;
int idx, best = -1;
- cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+ cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
freq = pos->frequency;
if (freq == target_freq)
@@ -959,35 +996,58 @@ static inline int cpufreq_table_find_index_dc(struct cpufreq_policy *policy,
/* Works only on sorted freq-tables */
static inline int cpufreq_table_find_index_c(struct cpufreq_policy *policy,
- unsigned int target_freq)
+ unsigned int target_freq,
+ bool efficiencies)
{
target_freq = clamp_val(target_freq, policy->min, policy->max);
if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
- return cpufreq_table_find_index_ac(policy, target_freq);
+ return cpufreq_table_find_index_ac(policy, target_freq,
+ efficiencies);
else
- return cpufreq_table_find_index_dc(policy, target_freq);
+ return cpufreq_table_find_index_dc(policy, target_freq,
+ efficiencies);
}
static inline int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
+ bool efficiencies = policy->efficiencies_available &&
+ (relation & CPUFREQ_RELATION_E);
+ int idx;
+
+ /* cpufreq_table_index_unsorted() has no use for this flag anyway */
+ relation &= ~CPUFREQ_RELATION_E;
+
if (unlikely(policy->freq_table_sorted == CPUFREQ_TABLE_UNSORTED))
return cpufreq_table_index_unsorted(policy, target_freq,
relation);
-
+retry:
switch (relation) {
case CPUFREQ_RELATION_L:
- return cpufreq_table_find_index_l(policy, target_freq);
+ idx = cpufreq_table_find_index_l(policy, target_freq,
+ efficiencies);
+ break;
case CPUFREQ_RELATION_H:
- return cpufreq_table_find_index_h(policy, target_freq);
+ idx = cpufreq_table_find_index_h(policy, target_freq,
+ efficiencies);
+ break;
case CPUFREQ_RELATION_C:
- return cpufreq_table_find_index_c(policy, target_freq);
+ idx = cpufreq_table_find_index_c(policy, target_freq,
+ efficiencies);
+ break;
default:
WARN_ON_ONCE(1);
return 0;
}
+
+ if (idx < 0 && efficiencies) {
+ efficiencies = false;
+ goto retry;
+ }
+
+ return idx;
}
static inline int cpufreq_table_count_valid_entries(const struct cpufreq_policy *policy)
@@ -1027,6 +1087,7 @@ cpufreq_table_set_inefficient(struct cpufreq_policy *policy,
cpufreq_for_each_valid_entry(pos, policy->freq_table) {
if (pos->frequency == frequency) {
pos->flags |= CPUFREQ_INEFFICIENT_FREQ;
+ policy->efficiencies_available = true;
return 0;
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 05:10:58 +0100