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Merge branches 'pm-cpufreq' and 'pm-core'

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* pm-cpufreq:
  cpufreq: Avoid creating excessively large stack frames

* pm-core:
  PM: core: Fix handling of devices deleted during system-wide resume
This commit is contained in:
Rafael J. Wysocki 2020-01-31 10:28:23 +01:00
commit 82b2c6ffd3
12 changed files with 157 additions and 126 deletions
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42
drivers/base/power/main.c
View File

@ -273,10 +273,38 @@ static void dpm_wait_for_suppliers(struct device *dev, bool async)
device_links_read_unlock(idx);
}
static void dpm_wait_for_superior(struct device *dev, bool async)
static bool dpm_wait_for_superior(struct device *dev, bool async)
{
dpm_wait(dev->parent, async);
struct device *parent;
/*
* If the device is resumed asynchronously and the parent's callback
* deletes both the device and the parent itself, the parent object may
* be freed while this function is running, so avoid that by reference
* counting the parent once more unless the device has been deleted
* already (in which case return right away).
*/
mutex_lock(&dpm_list_mtx);
if (!device_pm_initialized(dev)) {
mutex_unlock(&dpm_list_mtx);
return false;
}
parent = get_device(dev->parent);
mutex_unlock(&dpm_list_mtx);
dpm_wait(parent, async);
put_device(parent);
dpm_wait_for_suppliers(dev, async);
/*
* If the parent's callback has deleted the device, attempting to resume
* it would be invalid, so avoid doing that then.
*/
return device_pm_initialized(dev);
}
static void dpm_wait_for_consumers(struct device *dev, bool async)
@ -621,7 +649,8 @@ static int device_resume_noirq(struct device *dev, pm_message_t state, bool asyn
if (!dev->power.is_noirq_suspended)
goto Out;
dpm_wait_for_superior(dev, async);
if (!dpm_wait_for_superior(dev, async))
goto Out;
skip_resume = dev_pm_may_skip_resume(dev);
@ -829,7 +858,8 @@ static int device_resume_early(struct device *dev, pm_message_t state, bool asyn
if (!dev->power.is_late_suspended)
goto Out;
dpm_wait_for_superior(dev, async);
if (!dpm_wait_for_superior(dev, async))
goto Out;
callback = dpm_subsys_resume_early_cb(dev, state, &info);
@ -944,7 +974,9 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
goto Complete;
}
dpm_wait_for_superior(dev, async);
if (!dpm_wait_for_superior(dev, async))
goto Complete;
dpm_watchdog_set(&wd, dev);
device_lock(dev);

2
drivers/cpufreq/cppc_cpufreq.c
View File

@ -221,7 +221,7 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
return ret;
}
static int cppc_verify_policy(struct cpufreq_policy *policy)
static int cppc_verify_policy(struct cpufreq_policy_data *policy)
{
cpufreq_verify_within_cpu_limits(policy);
return 0;

2
drivers/cpufreq/cpufreq-nforce2.c
View File

@ -291,7 +291,7 @@ static int nforce2_target(struct cpufreq_policy *policy,
* nforce2_verify - verifies a new CPUFreq policy
* @policy: new policy
*/
static int nforce2_verify(struct cpufreq_policy *policy)
static int nforce2_verify(struct cpufreq_policy_data *policy)
{
unsigned int fsb_pol_max;

145
drivers/cpufreq/cpufreq.c
View File

@ -74,6 +74,9 @@ static void cpufreq_exit_governor(struct cpufreq_policy *policy);
static int cpufreq_start_governor(struct cpufreq_policy *policy);
static void cpufreq_stop_governor(struct cpufreq_policy *policy);
static void cpufreq_governor_limits(struct cpufreq_policy *policy);
static int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_governor *new_gov,
unsigned int new_pol);
/**
* Two notifier lists: the "policy" list is involved in the
@ -616,25 +619,22 @@ static struct cpufreq_governor *find_governor(const char *str_governor)
return NULL;
}
static int cpufreq_parse_policy(char *str_governor,
struct cpufreq_policy *policy)
static unsigned int cpufreq_parse_policy(char *str_governor)
{
if (!strncasecmp(str_governor, "performance", CPUFREQ_NAME_LEN)) {
policy->policy = CPUFREQ_POLICY_PERFORMANCE;
return 0;
}
if (!strncasecmp(str_governor, "powersave", CPUFREQ_NAME_LEN)) {
policy->policy = CPUFREQ_POLICY_POWERSAVE;
return 0;
}
return -EINVAL;
if (!strncasecmp(str_governor, "performance", CPUFREQ_NAME_LEN))
return CPUFREQ_POLICY_PERFORMANCE;
if (!strncasecmp(str_governor, "powersave", CPUFREQ_NAME_LEN))
return CPUFREQ_POLICY_POWERSAVE;
return CPUFREQ_POLICY_UNKNOWN;
}
/**
* cpufreq_parse_governor - parse a governor string only for has_target()
* @str_governor: Governor name.
*/
static int cpufreq_parse_governor(char *str_governor,
struct cpufreq_policy *policy)
static struct cpufreq_governor *cpufreq_parse_governor(char *str_governor)
{
struct cpufreq_governor *t;
@ -648,7 +648,7 @@ static int cpufreq_parse_governor(char *str_governor,
ret = request_module("cpufreq_%s", str_governor);
if (ret)
return -EINVAL;
return NULL;
mutex_lock(&cpufreq_governor_mutex);
@ -659,12 +659,7 @@ static int cpufreq_parse_governor(char *str_governor,
mutex_unlock(&cpufreq_governor_mutex);
if (t) {
policy->governor = t;
return 0;
}
return -EINVAL;
return t;
}
/**
@ -765,29 +760,34 @@ static ssize_t show_scaling_governor(struct cpufreq_policy *policy, char *buf)
static ssize_t store_scaling_governor(struct cpufreq_policy *policy,
const char *buf, size_t count)
{
int ret;
char str_governor[16];
struct cpufreq_policy new_policy;
memcpy(&new_policy, policy, sizeof(*policy));
int ret;
ret = sscanf(buf, "%15s", str_governor);
if (ret != 1)
return -EINVAL;
if (cpufreq_driver->setpolicy) {
if (cpufreq_parse_policy(str_governor, &new_policy))
unsigned int new_pol;
new_pol = cpufreq_parse_policy(str_governor);
if (!new_pol)
return -EINVAL;
ret = cpufreq_set_policy(policy, NULL, new_pol);
} else {
if (cpufreq_parse_governor(str_governor, &new_policy))
struct cpufreq_governor *new_gov;
new_gov = cpufreq_parse_governor(str_governor);
if (!new_gov)
return -EINVAL;
ret = cpufreq_set_policy(policy, new_gov,
CPUFREQ_POLICY_UNKNOWN);
module_put(new_gov->owner);
}
ret = cpufreq_set_policy(policy, &new_policy);
if (new_policy.governor)
module_put(new_policy.governor->owner);
return ret ? ret : count;
}
@ -1053,40 +1053,33 @@ __weak struct cpufreq_governor *cpufreq_default_governor(void)
static int cpufreq_init_policy(struct cpufreq_policy *policy)
{
struct cpufreq_governor *gov = NULL, *def_gov = NULL;
struct cpufreq_policy new_policy;
memcpy(&new_policy, policy, sizeof(*policy));
def_gov = cpufreq_default_governor();
struct cpufreq_governor *def_gov = cpufreq_default_governor();
struct cpufreq_governor *gov = NULL;
unsigned int pol = CPUFREQ_POLICY_UNKNOWN;
if (has_target()) {
/*
* Update governor of new_policy to the governor used before
* hotplug
*/
/* Update policy governor to the one used before hotplug. */
gov = find_governor(policy->last_governor);
if (gov) {
pr_debug("Restoring governor %s for cpu %d\n",
policy->governor->name, policy->cpu);
} else {
if (!def_gov)
return -ENODATA;
} else if (def_gov) {
gov = def_gov;
} else {
return -ENODATA;
}
new_policy.governor = gov;
} else {
/* Use the default policy if there is no last_policy. */
if (policy->last_policy) {
new_policy.policy = policy->last_policy;
pol = policy->last_policy;
} else if (def_gov) {
pol = cpufreq_parse_policy(def_gov->name);
} else {
if (!def_gov)
return -ENODATA;
cpufreq_parse_policy(def_gov->name, &new_policy);
}
}
return cpufreq_set_policy(policy, &new_policy);
return cpufreq_set_policy(policy, gov, pol);
}
static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
@ -1114,13 +1107,10 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy, unsigned int cp
void refresh_frequency_limits(struct cpufreq_policy *policy)
{
struct cpufreq_policy new_policy;
if (!policy_is_inactive(policy)) {
new_policy = *policy;
pr_debug("updating policy for CPU %u\n", policy->cpu);
cpufreq_set_policy(policy, &new_policy);
cpufreq_set_policy(policy, policy->governor, policy->policy);
}
}
EXPORT_SYMBOL(refresh_frequency_limits);
@ -2364,46 +2354,49 @@ EXPORT_SYMBOL(cpufreq_get_policy);
/**
* cpufreq_set_policy - Modify cpufreq policy parameters.
* @policy: Policy object to modify.
* @new_policy: New policy data.
* @new_gov: Policy governor pointer.
* @new_pol: Policy value (for drivers with built-in governors).
*
* Pass @new_policy to the cpufreq driver's ->verify() callback. Next, copy the
* min and max parameters of @new_policy to @policy and either invoke the
* driver's ->setpolicy() callback (if present) or carry out a governor update
* for @policy. That is, run the current governor's ->limits() callback (if the
* governor field in @new_policy points to the same object as the one in
* @policy) or replace the governor for @policy with the new one stored in
* @new_policy.
* Invoke the cpufreq driver's ->verify() callback to sanity-check the frequency
* limits to be set for the policy, update @policy with the verified limits
* values and either invoke the driver's ->setpolicy() callback (if present) or
* carry out a governor update for @policy. That is, run the current governor's
* ->limits() callback (if @new_gov points to the same object as the one in
* @policy) or replace the governor for @policy with @new_gov.
*
* The cpuinfo part of @policy is not updated by this function.
*/
int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_policy *new_policy)
static int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_governor *new_gov,
unsigned int new_pol)
{
struct cpufreq_policy_data new_data;
struct cpufreq_governor *old_gov;
int ret;
pr_debug("setting new policy for CPU %u: %u - %u kHz\n",
new_policy->cpu, new_policy->min, new_policy->max);
memcpy(&new_policy->cpuinfo, &policy->cpuinfo, sizeof(policy->cpuinfo));
memcpy(&new_data.cpuinfo, &policy->cpuinfo, sizeof(policy->cpuinfo));
new_data.freq_table = policy->freq_table;
new_data.cpu = policy->cpu;
/*
* PM QoS framework collects all the requests from users and provide us
* the final aggregated value here.
*/
new_policy->min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN);
new_policy->max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX);
new_data.min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN);
new_data.max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX);
pr_debug("setting new policy for CPU %u: %u - %u kHz\n",
new_data.cpu, new_data.min, new_data.max);
/*
* Verify that the CPU speed can be set within these limits and make sure
* that min <= max.
*/
ret = cpufreq_driver->verify(new_policy);
ret = cpufreq_driver->verify(&new_data);
if (ret)
return ret;
policy->min = new_policy->min;
policy->max = new_policy->max;
policy->min = new_data.min;
policy->max = new_data.max;
trace_cpu_frequency_limits(policy);
policy->cached_target_freq = UINT_MAX;
@ -2412,12 +2405,12 @@ int cpufreq_set_policy(struct cpufreq_policy *policy,
policy->min, policy->max);
if (cpufreq_driver->setpolicy) {
policy->policy = new_policy->policy;
policy->policy = new_pol;
pr_debug("setting range\n");
return cpufreq_driver->setpolicy(policy);
}
if (new_policy->governor == policy->governor) {
if (new_gov == policy->governor) {
pr_debug("governor limits update\n");
cpufreq_governor_limits(policy);
return 0;
@ -2434,7 +2427,7 @@ int cpufreq_set_policy(struct cpufreq_policy *policy,
}
/* start new governor */
policy->governor = new_policy->governor;
policy->governor = new_gov;
ret = cpufreq_init_governor(policy);
if (!ret) {
ret = cpufreq_start_governor(policy);

4
drivers/cpufreq/freq_table.c
View File

@ -60,7 +60,7 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
return 0;
}
int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
int cpufreq_frequency_table_verify(struct cpufreq_policy_data *policy,
struct cpufreq_frequency_table *table)
{
struct cpufreq_frequency_table *pos;
@ -100,7 +100,7 @@ EXPORT_SYMBOL_GPL(cpufreq_frequency_table_verify);
* Generic routine to verify policy & frequency table, requires driver to set
* policy->freq_table prior to it.
*/
int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy)
int cpufreq_generic_frequency_table_verify(struct cpufreq_policy_data *policy)
{
if (!policy->freq_table)
return -ENODEV;

2
drivers/cpufreq/gx-suspmod.c
View File

@ -328,7 +328,7 @@ static void gx_set_cpuspeed(struct cpufreq_policy *policy, unsigned int khz)
* for the hardware supported by the driver.
*/
static int cpufreq_gx_verify(struct cpufreq_policy *policy)
static int cpufreq_gx_verify(struct cpufreq_policy_data *policy)
{
unsigned int tmp_freq = 0;
u8 tmp1, tmp2;

38
drivers/cpufreq/intel_pstate.c
View File

@ -2036,8 +2036,9 @@ static int intel_pstate_get_max_freq(struct cpudata *cpu)
cpu->pstate.max_freq : cpu->pstate.turbo_freq;
}
static void intel_pstate_update_perf_limits(struct cpufreq_policy *policy,
struct cpudata *cpu)
static void intel_pstate_update_perf_limits(struct cpudata *cpu,
unsigned int policy_min,
unsigned int policy_max)
{
int max_freq = intel_pstate_get_max_freq(cpu);
int32_t max_policy_perf, min_policy_perf;
@ -2056,18 +2057,17 @@ static void intel_pstate_update_perf_limits(struct cpufreq_policy *policy,
turbo_max = cpu->pstate.turbo_pstate;
}
max_policy_perf = max_state * policy->max / max_freq;
if (policy->max == policy->min) {
max_policy_perf = max_state * policy_max / max_freq;
if (policy_max == policy_min) {
min_policy_perf = max_policy_perf;
} else {
min_policy_perf = max_state * policy->min / max_freq;
min_policy_perf = max_state * policy_min / max_freq;
min_policy_perf = clamp_t(int32_t, min_policy_perf,
0, max_policy_perf);
}
pr_debug("cpu:%d max_state %d min_policy_perf:%d max_policy_perf:%d\n",
policy->cpu, max_state,
min_policy_perf, max_policy_perf);
cpu->cpu, max_state, min_policy_perf, max_policy_perf);
/* Normalize user input to [min_perf, max_perf] */
if (per_cpu_limits) {
@ -2081,7 +2081,7 @@ static void intel_pstate_update_perf_limits(struct cpufreq_policy *policy,
global_min = DIV_ROUND_UP(turbo_max * global.min_perf_pct, 100);
global_min = clamp_t(int32_t, global_min, 0, global_max);
pr_debug("cpu:%d global_min:%d global_max:%d\n", policy->cpu,
pr_debug("cpu:%d global_min:%d global_max:%d\n", cpu->cpu,
global_min, global_max);
cpu->min_perf_ratio = max(min_policy_perf, global_min);
@ -2094,7 +2094,7 @@ static void intel_pstate_update_perf_limits(struct cpufreq_policy *policy,
cpu->max_perf_ratio);
}
pr_debug("cpu:%d max_perf_ratio:%d min_perf_ratio:%d\n", policy->cpu,
pr_debug("cpu:%d max_perf_ratio:%d min_perf_ratio:%d\n", cpu->cpu,
cpu->max_perf_ratio,
cpu->min_perf_ratio);
}
@ -2114,7 +2114,7 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
mutex_lock(&intel_pstate_limits_lock);
intel_pstate_update_perf_limits(policy, cpu);
intel_pstate_update_perf_limits(cpu, policy->min, policy->max);
if (cpu->policy == CPUFREQ_POLICY_PERFORMANCE) {
/*
@ -2143,8 +2143,8 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
return 0;
}
static void intel_pstate_adjust_policy_max(struct cpufreq_policy *policy,
struct cpudata *cpu)
static void intel_pstate_adjust_policy_max(struct cpudata *cpu,
struct cpufreq_policy_data *policy)
{
if (!hwp_active &&
cpu->pstate.max_pstate_physical > cpu->pstate.max_pstate &&
@ -2155,7 +2155,7 @@ static void intel_pstate_adjust_policy_max(struct cpufreq_policy *policy,
}
}
static int intel_pstate_verify_policy(struct cpufreq_policy *policy)
static int intel_pstate_verify_policy(struct cpufreq_policy_data *policy)
{
struct cpudata *cpu = all_cpu_data[policy->cpu];
@ -2163,11 +2163,7 @@ static int intel_pstate_verify_policy(struct cpufreq_policy *policy)
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
intel_pstate_get_max_freq(cpu));
if (policy->policy != CPUFREQ_POLICY_POWERSAVE &&
policy->policy != CPUFREQ_POLICY_PERFORMANCE)
return -EINVAL;
intel_pstate_adjust_policy_max(policy, cpu);
intel_pstate_adjust_policy_max(cpu, policy);
return 0;
}
@ -2268,7 +2264,7 @@ static struct cpufreq_driver intel_pstate = {
.name = "intel_pstate",
};
static int intel_cpufreq_verify_policy(struct cpufreq_policy *policy)
static int intel_cpufreq_verify_policy(struct cpufreq_policy_data *policy)
{
struct cpudata *cpu = all_cpu_data[policy->cpu];
@ -2276,9 +2272,9 @@ static int intel_cpufreq_verify_policy(struct cpufreq_policy *policy)
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
intel_pstate_get_max_freq(cpu));
intel_pstate_adjust_policy_max(policy, cpu);
intel_pstate_adjust_policy_max(cpu, policy);
intel_pstate_update_perf_limits(policy, cpu);
intel_pstate_update_perf_limits(cpu, policy->min, policy->max);
return 0;
}

6
drivers/cpufreq/longrun.c
View File

@ -122,7 +122,7 @@ static int longrun_set_policy(struct cpufreq_policy *policy)
* Validates a new CPUFreq policy. This function has to be called with
* cpufreq_driver locked.
*/
static int longrun_verify_policy(struct cpufreq_policy *policy)
static int longrun_verify_policy(struct cpufreq_policy_data *policy)
{
if (!policy)
return -EINVAL;
@ -130,10 +130,6 @@ static int longrun_verify_policy(struct cpufreq_policy *policy)
policy->cpu = 0;
cpufreq_verify_within_cpu_limits(policy);
if ((policy->policy != CPUFREQ_POLICY_POWERSAVE) &&
(policy->policy != CPUFREQ_POLICY_PERFORMANCE))
return -EINVAL;
return 0;
}

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

@ -109,7 +109,7 @@ struct pcc_cpu {
static struct pcc_cpu __percpu *pcc_cpu_info;
static int pcc_cpufreq_verify(struct cpufreq_policy *policy)
static int pcc_cpufreq_verify(struct cpufreq_policy_data *policy)
{
cpufreq_verify_within_cpu_limits(policy);
return 0;

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

@ -87,7 +87,7 @@ static int sh_cpufreq_target(struct cpufreq_policy *policy,
return work_on_cpu(policy->cpu, __sh_cpufreq_target, &data);
}
static int sh_cpufreq_verify(struct cpufreq_policy *policy)
static int sh_cpufreq_verify(struct cpufreq_policy_data *policy)
{
struct clk *cpuclk = &per_cpu(sh_cpuclk, policy->cpu);
struct cpufreq_frequency_table *freq_table;

2
drivers/cpufreq/unicore2-cpufreq.c
View File

@ -22,7 +22,7 @@ static struct cpufreq_driver ucv2_driver;
/* make sure that only the "userspace" governor is run
* -- anything else wouldn't make sense on this platform, anyway.
*/
static int ucv2_verify_speed(struct cpufreq_policy *policy)
static int ucv2_verify_speed(struct cpufreq_policy_data *policy)
{
if (policy->cpu)
return -EINVAL;

30
include/linux/cpufreq.h
View File

@ -148,6 +148,20 @@ struct cpufreq_policy {
struct notifier_block nb_max;
};
/*
* Used for passing new cpufreq policy data to the cpufreq driver's ->verify()
* callback for sanitization. That callback is only expected to modify the min
* and max values, if necessary, and specifically it must not update the
* frequency table.
*/
struct cpufreq_policy_data {
struct cpufreq_cpuinfo cpuinfo;
struct cpufreq_frequency_table *freq_table;
unsigned int cpu;
unsigned int min; /* in kHz */
unsigned int max; /* in kHz */
};
struct cpufreq_freqs {
struct cpufreq_policy *policy;
unsigned int old;
@ -201,8 +215,6 @@ 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 refresh_frequency_limits(struct cpufreq_policy *policy);
void cpufreq_update_policy(unsigned int cpu);
void cpufreq_update_limits(unsigned int cpu);
@ -284,7 +296,7 @@ struct cpufreq_driver {
/* needed by all drivers */
int (*init)(struct cpufreq_policy *policy);
int (*verify)(struct cpufreq_policy *policy);
int (*verify)(struct cpufreq_policy_data *policy);
/* define one out of two */
int (*setpolicy)(struct cpufreq_policy *policy);
@ -415,8 +427,9 @@ static inline int cpufreq_thermal_control_enabled(struct cpufreq_driver *drv)
(drv->flags & CPUFREQ_IS_COOLING_DEV);
}
static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
unsigned int min, unsigned int max)
static inline void cpufreq_verify_within_limits(struct cpufreq_policy_data *policy,
unsigned int min,
unsigned int max)
{
if (policy->min < min)
policy->min = min;
@ -432,7 +445,7 @@ static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
}
static inline void
cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy)
cpufreq_verify_within_cpu_limits(struct cpufreq_policy_data *policy)
{
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
@ -513,6 +526,7 @@ static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
* CPUFREQ GOVERNORS *
*********************************************************************/
#define CPUFREQ_POLICY_UNKNOWN (0)
/*
* If (cpufreq_driver->target) exists, the ->governor decides what frequency
* within the limits is used. If (cpufreq_driver->setpolicy> exists, these
@ -684,9 +698,9 @@ static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table);
int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
int cpufreq_frequency_table_verify(struct cpufreq_policy_data *policy,
struct cpufreq_frequency_table *table);
int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy);
int cpufreq_generic_frequency_table_verify(struct cpufreq_policy_data *policy);
int cpufreq_table_index_unsorted(struct cpufreq_policy *policy,
unsigned int target_freq,