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alistair23-linux
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Merge branch 'pm-cpufreq' 

* pm-cpufreq: (24 commits)
  cpufreq: Fix kobject memleak
  cpufreq: armada-37xx: fix frequency calculation for opp
  cpufreq: centrino: Fix centrino_setpolicy() kerneldoc comment
  cpufreq: qoriq: add support for lx2160a
  cpufreq: qoriq: Add ls1028a chip support
  cpufreq: Move ->get callback check outside of __cpufreq_get()
  cpufreq: Remove needless bios_limit check in show_bios_limit()
  drivers/cpufreq/acpi-cpufreq.c: This fixes the following checkpatch warning
  cpufreq: boost: Remove CONFIG_CPU_FREQ_BOOST_SW Kconfig option
  cpufreq: stats: Use lock by stat to replace global spin lock
  cpufreq: Remove cpufreq_driver check in cpufreq_boost_supported()
  cpufreq: maple: Remove redundant code from maple_cpufreq_init()
  cpufreq: ppc_cbe: fix possible object reference leak
  cpufreq: pmac32: fix possible object reference leak
  cpufreq/pasemi: fix possible object reference leak
  cpufreq: maple: fix possible object reference leak
  cpufreq: kirkwood: fix possible object reference leak
  cpufreq: imx6q: fix possible object reference leak
  cpufreq: ap806: fix possible object reference leak
  drivers/cpufreq: Convert some slow-path static_cpu_has() callers to boot_cpu_has()
  ...
hifive-unleashed-5.2
Rafael J. Wysocki 2019-05-06 10:54:27 +02:00
parent 4566e2dd4a 4ebe36c94a
commit 7d4a27c1c8
22 changed files with 216 additions and 93 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/acpi/processor_perflib.c
View File

@ -181,7 +181,7 @@ void acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag)
acpi_processor_ppc_ost(pr->handle, 0);
}
if (ret >= 0)
cpufreq_update_policy(pr->id);
cpufreq_update_limits(pr->id);
}
int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)

4
drivers/cpufreq/Kconfig
View File

@ -26,10 +26,6 @@ config CPU_FREQ_GOV_COMMON
select IRQ_WORK
bool
config CPU_FREQ_BOOST_SW
bool
depends on THERMAL
config CPU_FREQ_STAT
bool "CPU frequency transition statistics"
help

19
drivers/cpufreq/acpi-cpufreq.c
View File

@ -366,7 +366,7 @@ static u32 get_cur_val(const struct cpumask *mask, struct acpi_cpufreq_data *dat
val = drv_read(data, mask);
pr_debug("get_cur_val = %u\n", val);
pr_debug("%s = %u\n", __func__, val);
return val;
}
@ -378,7 +378,7 @@ static unsigned int get_cur_freq_on_cpu(unsigned int cpu)
unsigned int freq;
unsigned int cached_freq;
pr_debug("get_cur_freq_on_cpu (%d)\n", cpu);
pr_debug("%s (%d)\n", __func__, cpu);
policy = cpufreq_cpu_get_raw(cpu);
if (unlikely(!policy))
@ -458,8 +458,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
if (acpi_pstate_strict) {
if (!check_freqs(policy, mask,
policy->freq_table[index].frequency)) {
pr_debug("acpi_cpufreq_target failed (%d)\n",
policy->cpu);
pr_debug("%s (%d)\n", __func__, policy->cpu);
result = -EAGAIN;
}
}
@ -573,7 +572,7 @@ static int cpufreq_boost_down_prep(unsigned int cpu)
static int __init acpi_cpufreq_early_init(void)
{
unsigned int i;
pr_debug("acpi_cpufreq_early_init\n");
pr_debug("%s\n", __func__);
acpi_perf_data = alloc_percpu(struct acpi_processor_performance);
if (!acpi_perf_data) {
@ -657,7 +656,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
static int blacklisted;
#endif
pr_debug("acpi_cpufreq_cpu_init\n");
pr_debug("%s\n", __func__);
#ifdef CONFIG_SMP
if (blacklisted)
@ -856,7 +855,7 @@ static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
{
struct acpi_cpufreq_data *data = policy->driver_data;
pr_debug("acpi_cpufreq_cpu_exit\n");
pr_debug("%s\n", __func__);
policy->fast_switch_possible = false;
policy->driver_data = NULL;
@ -881,7 +880,7 @@ static int acpi_cpufreq_resume(struct cpufreq_policy *policy)
{
struct acpi_cpufreq_data *data = policy->driver_data;
pr_debug("acpi_cpufreq_resume\n");
pr_debug("%s\n", __func__);
data->resume = 1;
@ -954,7 +953,7 @@ static int __init acpi_cpufreq_init(void)
if (cpufreq_get_current_driver())
return -EEXIST;
pr_debug("acpi_cpufreq_init\n");
pr_debug("%s\n", __func__);
ret = acpi_cpufreq_early_init();
if (ret)
@ -991,7 +990,7 @@ static int __init acpi_cpufreq_init(void)
static void __exit acpi_cpufreq_exit(void)
{
pr_debug("acpi_cpufreq_exit\n");
pr_debug("%s\n", __func__);
acpi_cpufreq_boost_exit();

2
drivers/cpufreq/amd_freq_sensitivity.c
View File

@ -124,7 +124,7 @@ static int __init amd_freq_sensitivity_init(void)
PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
if (!pcidev) {
if (!static_cpu_has(X86_FEATURE_PROC_FEEDBACK))
if (!boot_cpu_has(X86_FEATURE_PROC_FEEDBACK))
return -ENODEV;
}

22
drivers/cpufreq/armada-37xx-cpufreq.c
View File

@ -359,11 +359,11 @@ static int __init armada37xx_cpufreq_driver_init(void)
struct armada_37xx_dvfs *dvfs;
struct platform_device *pdev;
unsigned long freq;
unsigned int cur_frequency;
unsigned int cur_frequency, base_frequency;
struct regmap *nb_pm_base, *avs_base;
struct device *cpu_dev;
int load_lvl, ret;
struct clk *clk;
struct clk *clk, *parent;
nb_pm_base =
syscon_regmap_lookup_by_compatible("marvell,armada-3700-nb-pm");
@ -399,6 +399,22 @@ static int __init armada37xx_cpufreq_driver_init(void)
return PTR_ERR(clk);
}
parent = clk_get_parent(clk);
if (IS_ERR(parent)) {
dev_err(cpu_dev, "Cannot get parent clock for CPU0\n");
clk_put(clk);
return PTR_ERR(parent);
}
/* Get parent CPU frequency */
base_frequency = clk_get_rate(parent);
if (!base_frequency) {
dev_err(cpu_dev, "Failed to get parent clock rate for CPU\n");
clk_put(clk);
return -EINVAL;
}
/* Get nominal (current) CPU frequency */
cur_frequency = clk_get_rate(clk);
if (!cur_frequency) {
@ -431,7 +447,7 @@ static int __init armada37xx_cpufreq_driver_init(void)
for (load_lvl = ARMADA_37XX_DVFS_LOAD_0; load_lvl < LOAD_LEVEL_NR;
load_lvl++) {
unsigned long u_volt = avs_map[dvfs->avs[load_lvl]] * 1000;
freq = cur_frequency / dvfs->divider[load_lvl];
freq = base_frequency / dvfs->divider[load_lvl];
ret = dev_pm_opp_add(cpu_dev, freq, u_volt);
if (ret)
goto remove_opp;

1
drivers/cpufreq/armada-8k-cpufreq.c
View File

@ -132,6 +132,7 @@ static int __init armada_8k_cpufreq_init(void)
of_node_put(node);
return -ENODEV;
}
of_node_put(node);
nb_cpus = num_possible_cpus();
freq_tables = kcalloc(nb_cpus, sizeof(*freq_tables), GFP_KERNEL);

100
drivers/cpufreq/cpufreq.c
View File

@ -34,11 +34,6 @@
static LIST_HEAD(cpufreq_policy_list);
static inline bool policy_is_inactive(struct cpufreq_policy *policy)
{
return cpumask_empty(policy->cpus);
}
/* Macros to iterate over CPU policies */
#define for_each_suitable_policy(__policy, __active) \
list_for_each_entry(__policy, &cpufreq_policy_list, policy_list) \
@ -250,6 +245,51 @@ void cpufreq_cpu_put(struct cpufreq_policy *policy)
}
EXPORT_SYMBOL_GPL(cpufreq_cpu_put);
/**
* cpufreq_cpu_release - Unlock a policy and decrement its usage counter.
* @policy: cpufreq policy returned by cpufreq_cpu_acquire().
*/
void cpufreq_cpu_release(struct cpufreq_policy *policy)
{
if (WARN_ON(!policy))
return;
lockdep_assert_held(&policy->rwsem);
up_write(&policy->rwsem);
cpufreq_cpu_put(policy);
}
/**
* cpufreq_cpu_acquire - Find policy for a CPU, mark it as busy and lock it.
* @cpu: CPU to find the policy for.
*
* Call cpufreq_cpu_get() to get a reference on the cpufreq policy for @cpu and
* if the policy returned by it is not NULL, acquire its rwsem for writing.
* Return the policy if it is active or release it and return NULL otherwise.
*
* The policy returned by this function has to be released with the help of
* cpufreq_cpu_release() in order to release its rwsem and balance its usage
* counter properly.
*/
struct cpufreq_policy *cpufreq_cpu_acquire(unsigned int cpu)
{
struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
if (!policy)
return NULL;
down_write(&policy->rwsem);
if (policy_is_inactive(policy)) {
cpufreq_cpu_release(policy);
return NULL;
}
return policy;
}
/*********************************************************************
* EXTERNALLY AFFECTING FREQUENCY CHANGES *
*********************************************************************/
@ -669,9 +709,6 @@ static ssize_t show_scaling_cur_freq(struct cpufreq_policy *policy, char *buf)
return ret;
}
static int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_policy *new_policy);
/**
* cpufreq_per_cpu_attr_write() / store_##file_name() - sysfs write access
*/
@ -857,11 +894,9 @@ static ssize_t show_bios_limit(struct cpufreq_policy *policy, char *buf)
{
unsigned int limit;
int ret;
if (cpufreq_driver->bios_limit) {
ret = cpufreq_driver->bios_limit(policy->cpu, &limit);
if (!ret)
return sprintf(buf, "%u\n", limit);
}
ret = cpufreq_driver->bios_limit(policy->cpu, &limit);
if (!ret)
return sprintf(buf, "%u\n", limit);
return sprintf(buf, "%u\n", policy->cpuinfo.max_freq);
}
@ -1098,6 +1133,7 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu)
cpufreq_global_kobject, "policy%u", cpu);
if (ret) {
pr_err("%s: failed to init policy->kobj: %d\n", __func__, ret);
kobject_put(&policy->kobj);
goto err_free_real_cpus;
}
@ -1550,7 +1586,7 @@ static unsigned int __cpufreq_get(struct cpufreq_policy *policy)
{
unsigned int ret_freq = 0;
if (unlikely(policy_is_inactive(policy)) || !cpufreq_driver->get)
if (unlikely(policy_is_inactive(policy)))
return ret_freq;
ret_freq = cpufreq_driver->get(policy->cpu);
@ -1588,7 +1624,8 @@ unsigned int cpufreq_get(unsigned int cpu)
if (policy) {
down_read(&policy->rwsem);
ret_freq = __cpufreq_get(policy);
if (cpufreq_driver->get)
ret_freq = __cpufreq_get(policy);
up_read(&policy->rwsem);
cpufreq_cpu_put(policy);
@ -2229,8 +2266,8 @@ EXPORT_SYMBOL(cpufreq_get_policy);
*
* The cpuinfo part of @policy is not updated by this function.
*/
static int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_policy *new_policy)
int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_policy *new_policy)
{
struct cpufreq_governor *old_gov;
int ret;
@ -2337,17 +2374,12 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy,
*/
void cpufreq_update_policy(unsigned int cpu)
{
struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
struct cpufreq_policy *policy = cpufreq_cpu_acquire(cpu);
struct cpufreq_policy new_policy;
if (!policy)
return;
down_write(&policy->rwsem);
if (policy_is_inactive(policy))
goto unlock;
/*
* BIOS might change freq behind our back
* -> ask driver for current freq and notify governors about a change
@ -2364,12 +2396,26 @@ void cpufreq_update_policy(unsigned int cpu)
cpufreq_set_policy(policy, &new_policy);
unlock:
up_write(&policy->rwsem);
cpufreq_cpu_put(policy);
cpufreq_cpu_release(policy);
}
EXPORT_SYMBOL(cpufreq_update_policy);
/**
* cpufreq_update_limits - Update policy limits for a given CPU.
* @cpu: CPU to update the policy limits for.
*
* Invoke the driver's ->update_limits callback if present or call
* cpufreq_update_policy() for @cpu.
*/
void cpufreq_update_limits(unsigned int cpu)
{
if (cpufreq_driver->update_limits)
cpufreq_driver->update_limits(cpu);
else
cpufreq_update_policy(cpu);
}
EXPORT_SYMBOL_GPL(cpufreq_update_limits);
/*********************************************************************
* BOOST *
*********************************************************************/
@ -2426,7 +2472,7 @@ int cpufreq_boost_trigger_state(int state)
static bool cpufreq_boost_supported(void)
{
return likely(cpufreq_driver) && cpufreq_driver->set_boost;
return cpufreq_driver->set_boost;
}
static int create_boost_sysfs_file(void)

2
drivers/cpufreq/cpufreq_governor.c
View File

@ -459,6 +459,8 @@ int cpufreq_dbs_governor_init(struct cpufreq_policy *policy)
/* Failure, so roll back. */
pr_err("initialization failed (dbs_data kobject init error %d)\n", ret);
kobject_put(&dbs_data->attr_set.kobj);
policy->governor_data = NULL;
if (!have_governor_per_policy())

15
drivers/cpufreq/cpufreq_stats.c
View File

@ -14,7 +14,6 @@
#include <linux/module.h>
#include <linux/slab.h>
static DEFINE_SPINLOCK(cpufreq_stats_lock);
struct cpufreq_stats {
unsigned int total_trans;
@ -23,6 +22,7 @@ struct cpufreq_stats {
unsigned int state_num;
unsigned int last_index;
u64 *time_in_state;
spinlock_t lock;
unsigned int *freq_table;
unsigned int *trans_table;
};
@ -39,12 +39,12 @@ static void cpufreq_stats_clear_table(struct cpufreq_stats *stats)
{
unsigned int count = stats->max_state;
spin_lock(&cpufreq_stats_lock);
spin_lock(&stats->lock);
memset(stats->time_in_state, 0, count * sizeof(u64));
memset(stats->trans_table, 0, count * count * sizeof(int));
stats->last_time = get_jiffies_64();
stats->total_trans = 0;
spin_unlock(&cpufreq_stats_lock);
spin_unlock(&stats->lock);
}
static ssize_t show_total_trans(struct cpufreq_policy *policy, char *buf)
@ -62,9 +62,9 @@ static ssize_t show_time_in_state(struct cpufreq_policy *policy, char *buf)
if (policy->fast_switch_enabled)
return 0;
spin_lock(&cpufreq_stats_lock);
spin_lock(&stats->lock);
cpufreq_stats_update(stats);
spin_unlock(&cpufreq_stats_lock);
spin_unlock(&stats->lock);
for (i = 0; i < stats->state_num; i++) {
len += sprintf(buf + len, "%u %llu\n", stats->freq_table[i],
@ -211,6 +211,7 @@ void cpufreq_stats_create_table(struct cpufreq_policy *policy)
stats->state_num = i;
stats->last_time = get_jiffies_64();
stats->last_index = freq_table_get_index(stats, policy->cur);
spin_lock_init(&stats->lock);
policy->stats = stats;
ret = sysfs_create_group(&policy->kobj, &stats_attr_group);
@ -242,11 +243,11 @@ void cpufreq_stats_record_transition(struct cpufreq_policy *policy,
if (old_index == -1 || new_index == -1 || old_index == new_index)
return;
spin_lock(&cpufreq_stats_lock);
spin_lock(&stats->lock);
cpufreq_stats_update(stats);
stats->last_index = new_index;
stats->trans_table[old_index * stats->max_state + new_index]++;
stats->total_trans++;
spin_unlock(&cpufreq_stats_lock);
spin_unlock(&stats->lock);
}

3
drivers/cpufreq/freq_table.c
View File

@ -290,9 +290,6 @@ EXPORT_SYMBOL_GPL(cpufreq_freq_attr_scaling_boost_freqs);
struct freq_attr *cpufreq_generic_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
#ifdef CONFIG_CPU_FREQ_BOOST_SW
&cpufreq_freq_attr_scaling_boost_freqs,
#endif
NULL,
};
EXPORT_SYMBOL_GPL(cpufreq_generic_attr);

4
drivers/cpufreq/imx6q-cpufreq.c
View File

@ -388,11 +388,11 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
ret = imx6ul_opp_check_speed_grading(cpu_dev);
if (ret) {
if (ret == -EPROBE_DEFER)
return ret;
goto put_node;
dev_err(cpu_dev, "failed to read ocotp: %d\n",
ret);
return ret;
goto put_node;
}
} else {
imx6q_opp_check_speed_grading(cpu_dev);

65
drivers/cpufreq/intel_pstate.c
View File

@ -179,6 +179,7 @@ struct vid_data {
* based on the MSR_IA32_MISC_ENABLE value and whether or
* not the maximum reported turbo P-state is different from
* the maximum reported non-turbo one.
* @turbo_disabled_mf: The @turbo_disabled value reflected by cpuinfo.max_freq.
* @min_perf_pct: Minimum capacity limit in percent of the maximum turbo
* P-state capacity.
* @max_perf_pct: Maximum capacity limit in percent of the maximum turbo
@ -187,6 +188,7 @@ struct vid_data {
struct global_params {
bool no_turbo;
bool turbo_disabled;
bool turbo_disabled_mf;
int max_perf_pct;
int min_perf_pct;
};
@ -525,7 +527,7 @@ static s16 intel_pstate_get_epb(struct cpudata *cpu_data)
u64 epb;
int ret;
if (!static_cpu_has(X86_FEATURE_EPB))
if (!boot_cpu_has(X86_FEATURE_EPB))
return -ENXIO;
ret = rdmsrl_on_cpu(cpu_data->cpu, MSR_IA32_ENERGY_PERF_BIAS, &epb);
@ -539,7 +541,7 @@ static s16 intel_pstate_get_epp(struct cpudata *cpu_data, u64 hwp_req_data)
{
s16 epp;
if (static_cpu_has(X86_FEATURE_HWP_EPP)) {
if (boot_cpu_has(X86_FEATURE_HWP_EPP)) {
/*
* When hwp_req_data is 0, means that caller didn't read
* MSR_HWP_REQUEST, so need to read and get EPP.
@ -564,7 +566,7 @@ static int intel_pstate_set_epb(int cpu, s16 pref)
u64 epb;
int ret;
if (!static_cpu_has(X86_FEATURE_EPB))
if (!boot_cpu_has(X86_FEATURE_EPB))
return -ENXIO;
ret = rdmsrl_on_cpu(cpu, MSR_IA32_ENERGY_PERF_BIAS, &epb);
@ -612,7 +614,7 @@ static int intel_pstate_get_energy_pref_index(struct cpudata *cpu_data)
if (epp < 0)
return epp;
if (static_cpu_has(X86_FEATURE_HWP_EPP)) {
if (boot_cpu_has(X86_FEATURE_HWP_EPP)) {
if (epp == HWP_EPP_PERFORMANCE)
return 1;
if (epp <= HWP_EPP_BALANCE_PERFORMANCE)
@ -621,7 +623,7 @@ static int intel_pstate_get_energy_pref_index(struct cpudata *cpu_data)
return 3;
else
return 4;
} else if (static_cpu_has(X86_FEATURE_EPB)) {
} else if (boot_cpu_has(X86_FEATURE_EPB)) {
/*
* Range:
* 0x00-0x03 : Performance
@ -649,7 +651,7 @@ static int intel_pstate_set_energy_pref_index(struct cpudata *cpu_data,
mutex_lock(&intel_pstate_limits_lock);
if (static_cpu_has(X86_FEATURE_HWP_EPP)) {
if (boot_cpu_has(X86_FEATURE_HWP_EPP)) {
u64 value;
ret = rdmsrl_on_cpu(cpu_data->cpu, MSR_HWP_REQUEST, &value);
@ -824,7 +826,7 @@ static void intel_pstate_hwp_set(unsigned int cpu)
epp = cpu_data->epp_powersave;
}
update_epp:
if (static_cpu_has(X86_FEATURE_HWP_EPP)) {
if (boot_cpu_has(X86_FEATURE_HWP_EPP)) {
value &= ~GENMASK_ULL(31, 24);
value |= (u64)epp << 24;
} else {
@ -849,7 +851,7 @@ static void intel_pstate_hwp_force_min_perf(int cpu)
value |= HWP_MIN_PERF(min_perf);
/* Set EPP/EPB to min */
if (static_cpu_has(X86_FEATURE_HWP_EPP))
if (boot_cpu_has(X86_FEATURE_HWP_EPP))
value |= HWP_ENERGY_PERF_PREFERENCE(HWP_EPP_POWERSAVE);
else
intel_pstate_set_epb(cpu, HWP_EPP_BALANCE_POWERSAVE);
@ -897,6 +899,48 @@ static void intel_pstate_update_policies(void)
cpufreq_update_policy(cpu);
}
static void intel_pstate_update_max_freq(unsigned int cpu)
{
struct cpufreq_policy *policy = cpufreq_cpu_acquire(cpu);
struct cpufreq_policy new_policy;
struct cpudata *cpudata;
if (!policy)
return;
cpudata = all_cpu_data[cpu];
policy->cpuinfo.max_freq = global.turbo_disabled_mf ?
cpudata->pstate.max_freq : cpudata->pstate.turbo_freq;
memcpy(&new_policy, policy, sizeof(*policy));
new_policy.max = min(policy->user_policy.max, policy->cpuinfo.max_freq);
new_policy.min = min(policy->user_policy.min, new_policy.max);
cpufreq_set_policy(policy, &new_policy);
cpufreq_cpu_release(policy);
}
static void intel_pstate_update_limits(unsigned int cpu)
{
mutex_lock(&intel_pstate_driver_lock);
update_turbo_state();
/*
* If turbo has been turned on or off globally, policy limits for
* all CPUs need to be updated to reflect that.
*/
if (global.turbo_disabled_mf != global.turbo_disabled) {
global.turbo_disabled_mf = global.turbo_disabled;
for_each_possible_cpu(cpu)
intel_pstate_update_max_freq(cpu);
} else {
cpufreq_update_policy(cpu);
}
mutex_unlock(&intel_pstate_driver_lock);
}
/************************** sysfs begin ************************/
#define show_one(file_name, object) \
static ssize_t show_##file_name \
@ -1197,7 +1241,7 @@ static void __init intel_pstate_sysfs_expose_params(void)
static void intel_pstate_hwp_enable(struct cpudata *cpudata)
{
/* First disable HWP notification interrupt as we don't process them */
if (static_cpu_has(X86_FEATURE_HWP_NOTIFY))
if (boot_cpu_has(X86_FEATURE_HWP_NOTIFY))
wrmsrl_on_cpu(cpudata->cpu, MSR_HWP_INTERRUPT, 0x00);
wrmsrl_on_cpu(cpudata->cpu, MSR_PM_ENABLE, 0x1);
@ -2138,6 +2182,7 @@ static int __intel_pstate_cpu_init(struct cpufreq_policy *policy)
/* cpuinfo and default policy values */
policy->cpuinfo.min_freq = cpu->pstate.min_pstate * cpu->pstate.scaling;
update_turbo_state();
global.turbo_disabled_mf = global.turbo_disabled;
policy->cpuinfo.max_freq = global.turbo_disabled ?
cpu->pstate.max_pstate : cpu->pstate.turbo_pstate;
policy->cpuinfo.max_freq *= cpu->pstate.scaling;
@ -2182,6 +2227,7 @@ static struct cpufreq_driver intel_pstate = {
.init = intel_pstate_cpu_init,
.exit = intel_pstate_cpu_exit,
.stop_cpu = intel_pstate_stop_cpu,
.update_limits = intel_pstate_update_limits,
.name = "intel_pstate",
};
@ -2316,6 +2362,7 @@ static struct cpufreq_driver intel_cpufreq = {
.init = intel_cpufreq_cpu_init,
.exit = intel_pstate_cpu_exit,
.stop_cpu = intel_cpufreq_stop_cpu,
.update_limits = intel_pstate_update_limits,
.name = "intel_cpufreq",
};

19
drivers/cpufreq/kirkwood-cpufreq.c
View File

@ -124,13 +124,14 @@ static int kirkwood_cpufreq_probe(struct platform_device *pdev)
priv.cpu_clk = of_clk_get_by_name(np, "cpu_clk");
if (IS_ERR(priv.cpu_clk)) {
dev_err(priv.dev, "Unable to get cpuclk\n");
return PTR_ERR(priv.cpu_clk);
err = PTR_ERR(priv.cpu_clk);
goto out_node;
}
err = clk_prepare_enable(priv.cpu_clk);
if (err) {
dev_err(priv.dev, "Unable to prepare cpuclk\n");
return err;
goto out_node;
}
kirkwood_freq_table[0].frequency = clk_get_rate(priv.cpu_clk) / 1000;
@ -161,20 +162,22 @@ static int kirkwood_cpufreq_probe(struct platform_device *pdev)
goto out_ddr;
}
of_node_put(np);
np = NULL;
err = cpufreq_register_driver(&kirkwood_cpufreq_driver);
if (!err)
return 0;
if (err) {
dev_err(priv.dev, "Failed to register cpufreq driver\n");
goto out_powersave;
}
dev_err(priv.dev, "Failed to register cpufreq driver\n");
of_node_put(np);
return 0;
out_powersave:
clk_disable_unprepare(priv.powersave_clk);
out_ddr:
clk_disable_unprepare(priv.ddr_clk);
out_cpu:
clk_disable_unprepare(priv.cpu_clk);
out_node:
of_node_put(np);
return err;

6
drivers/cpufreq/maple-cpufreq.c
View File

@ -210,7 +210,7 @@ static int __init maple_cpufreq_init(void)
*/
valp = of_get_property(cpunode, "clock-frequency", NULL);
if (!valp)
return -ENODEV;
goto bail_noprops;
max_freq = (*valp)/1000;
maple_cpu_freqs[0].frequency = max_freq;
maple_cpu_freqs[1].frequency = max_freq/2;
@ -231,10 +231,6 @@ static int __init maple_cpufreq_init(void)
rc = cpufreq_register_driver(&maple_cpufreq_driver);
of_node_put(cpunode);
return rc;
bail_noprops:
of_node_put(cpunode);

1
drivers/cpufreq/pasemi-cpufreq.c
View File

@ -146,6 +146,7 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
cpu = of_get_cpu_node(policy->cpu, NULL);
of_node_put(cpu);
if (!cpu)
goto out;

2
drivers/cpufreq/pmac32-cpufreq.c
View File

@ -552,6 +552,7 @@ static int pmac_cpufreq_init_7447A(struct device_node *cpunode)
volt_gpio_np = of_find_node_by_name(NULL, "cpu-vcore-select");
if (volt_gpio_np)
voltage_gpio = read_gpio(volt_gpio_np);
of_node_put(volt_gpio_np);
if (!voltage_gpio){
pr_err("missing cpu-vcore-select gpio\n");
return 1;
@ -588,6 +589,7 @@ static int pmac_cpufreq_init_750FX(struct device_node *cpunode)
if (volt_gpio_np)
voltage_gpio = read_gpio(volt_gpio_np);
of_node_put(volt_gpio_np);
pvr = mfspr(SPRN_PVR);
has_cpu_l2lve = !((pvr & 0xf00) == 0x100);

2
drivers/cpufreq/powernow-k8.c
View File

@ -1178,7 +1178,7 @@ static int powernowk8_init(void)
unsigned int i, supported_cpus = 0;
int ret;
if (static_cpu_has(X86_FEATURE_HW_PSTATE)) {
if (boot_cpu_has(X86_FEATURE_HW_PSTATE)) {
__request_acpi_cpufreq();
return -ENODEV;
}

1
drivers/cpufreq/ppc_cbe_cpufreq.c
View File

@ -86,6 +86,7 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy)
if (!cbe_get_cpu_pmd_regs(policy->cpu) ||
!cbe_get_cpu_mic_tm_regs(policy->cpu)) {
pr_info("invalid CBE regs pointers for cpufreq\n");
of_node_put(cpu);
return -EINVAL;
}

2
drivers/cpufreq/qoriq-cpufreq.c
View File

@ -280,10 +280,12 @@ static const struct of_device_id node_matches[] __initconst = {
{ .compatible = "fsl,ls1012a-clockgen", },
{ .compatible = "fsl,ls1021a-clockgen", },
{ .compatible = "fsl,ls1028a-clockgen", },
{ .compatible = "fsl,ls1043a-clockgen", },
{ .compatible = "fsl,ls1046a-clockgen", },
{ .compatible = "fsl,ls1088a-clockgen", },
{ .compatible = "fsl,ls2080a-clockgen", },
{ .compatible = "fsl,lx2160a-clockgen", },
{ .compatible = "fsl,p4080-clockgen", },
{ .compatible = "fsl,qoriq-clockgen-1.0", },
{ .compatible = "fsl,qoriq-clockgen-2.0", },

2
drivers/cpufreq/speedstep-centrino.c
View File

@ -412,7 +412,7 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy)
}
/**
* centrino_setpolicy - set a new CPUFreq policy
* centrino_target - set a new CPUFreq policy
* @policy: new policy
* @index: index of target frequency
*

14
include/linux/cpufreq.h
View File

@ -178,6 +178,11 @@ static inline struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
static inline void cpufreq_cpu_put(struct cpufreq_policy *policy) { }
#endif
static inline bool policy_is_inactive(struct cpufreq_policy *policy)
{
return cpumask_empty(policy->cpus);
}
static inline bool policy_is_shared(struct cpufreq_policy *policy)
{
return cpumask_weight(policy->cpus) > 1;
@ -193,8 +198,14 @@ unsigned int cpufreq_quick_get_max(unsigned int cpu);
void disable_cpufreq(void);
u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
struct cpufreq_policy *cpufreq_cpu_acquire(unsigned int cpu);
void cpufreq_cpu_release(struct cpufreq_policy *policy);
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_policy *new_policy);
void cpufreq_update_policy(unsigned int cpu);
void cpufreq_update_limits(unsigned int cpu);
bool have_governor_per_policy(void);
struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy);
void cpufreq_enable_fast_switch(struct cpufreq_policy *policy);
@ -322,6 +333,9 @@ struct cpufreq_driver {
/* should be defined, if possible */
unsigned int (*get)(unsigned int cpu);
/* Called to update policy limits on firmware notifications. */
void (*update_limits)(unsigned int cpu);
/* optional */
int (*bios_limit)(int cpu, unsigned int *limit);

21
kernel/sched/cpufreq_schedutil.c
View File

@ -13,6 +13,8 @@
#include <linux/sched/cpufreq.h>
#include <trace/events/power.h>
#define IOWAIT_BOOST_MIN (SCHED_CAPACITY_SCALE / 8)
struct sugov_tunables {
struct gov_attr_set attr_set;
unsigned int rate_limit_us;
@ -51,7 +53,6 @@ struct sugov_cpu {
u64 last_update;
unsigned long bw_dl;
unsigned long min;
unsigned long max;
/* The field below is for single-CPU policies only: */
@ -291,8 +292,8 @@ static unsigned long sugov_get_util(struct sugov_cpu *sg_cpu)
*
* The IO wait boost of a task is disabled after a tick since the last update
* of a CPU. If a new IO wait boost is requested after more then a tick, then
* we enable the boost starting from the minimum frequency, which improves
* energy efficiency by ignoring sporadic wakeups from IO.
* we enable the boost starting from IOWAIT_BOOST_MIN, which improves energy
* efficiency by ignoring sporadic wakeups from IO.
*/
static bool sugov_iowait_reset(struct sugov_cpu *sg_cpu, u64 time,
bool set_iowait_boost)
@ -303,7 +304,7 @@ static bool sugov_iowait_reset(struct sugov_cpu *sg_cpu, u64 time,
if (delta_ns <= TICK_NSEC)
return false;
sg_cpu->iowait_boost = set_iowait_boost ? sg_cpu->min : 0;
sg_cpu->iowait_boost = set_iowait_boost ? IOWAIT_BOOST_MIN : 0;
sg_cpu->iowait_boost_pending = set_iowait_boost;
return true;
@ -317,8 +318,9 @@ static bool sugov_iowait_reset(struct sugov_cpu *sg_cpu, u64 time,
*
* Each time a task wakes up after an IO operation, the CPU utilization can be
* boosted to a certain utilization which doubles at each "frequent and
* successive" wakeup from IO, ranging from the utilization of the minimum
* OPP to the utilization of the maximum OPP.
* successive" wakeup from IO, ranging from IOWAIT_BOOST_MIN to the utilization
* of the maximum OPP.
*
* To keep doubling, an IO boost has to be requested at least once per tick,
* otherwise we restart from the utilization of the minimum OPP.
*/
@ -349,7 +351,7 @@ static void sugov_iowait_boost(struct sugov_cpu *sg_cpu, u64 time,
}
/* First wakeup after IO: start with minimum boost */
sg_cpu->iowait_boost = sg_cpu->min;
sg_cpu->iowait_boost = IOWAIT_BOOST_MIN;
}
/**
@ -389,7 +391,7 @@ static unsigned long sugov_iowait_apply(struct sugov_cpu *sg_cpu, u64 time,
* No boost pending; reduce the boost value.
*/
sg_cpu->iowait_boost >>= 1;
if (sg_cpu->iowait_boost < sg_cpu->min) {
if (sg_cpu->iowait_boost < IOWAIT_BOOST_MIN) {
sg_cpu->iowait_boost = 0;
return util;
}
@ -826,9 +828,6 @@ static int sugov_start(struct cpufreq_policy *policy)
memset(sg_cpu, 0, sizeof(*sg_cpu));
sg_cpu->cpu = cpu;
sg_cpu->sg_policy = sg_policy;
sg_cpu->min =
(SCHED_CAPACITY_SCALE * policy->cpuinfo.min_freq) /
policy->cpuinfo.max_freq;
}
for_each_cpu(cpu, policy->cpus) {