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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 

Pull thermal management updates from Zhang Rui:

 - Improve thermal cpu_cooling interaction with cpufreq core.

   The cpu_cooling driver is designed to use CPU frequency scaling to
   avoid high thermal states for a platform. But it wasn't glued really
   well with cpufreq core.

   For example clipped-cpus is copied from the policy structure and its
   much better to use the policy->cpus (or related_cpus) fields directly
   as they may have got updated. Not that things were broken before this
   series, but they can be optimized a bit more.

   This series tries to improve interactions between cpufreq core and
   cpu_cooling driver and does some fixes/cleanups to the cpu_cooling
   driver. (Viresh Kumar)

 - A couple of fixes and cleanups in thermal core and imx, hisilicon,
   bcm_2835, int340x thermal drivers. (Arvind Yadav, Dan Carpenter,
   Sumeet Pawnikar, Srinivas Pandruvada, Willy WOLFF)

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (24 commits)
  thermal: bcm2835: fix an error code in probe()
  thermal: hisilicon: Handle return value of clk_prepare_enable
  thermal: imx: Handle return value of clk_prepare_enable
  thermal: int340x: check for sensor when PTYP is missing
  Thermal/int340x: Fix few typos and kernel-doc style
  thermal: fix source code documentation for parameters
  thermal: cpu_cooling: Replace kmalloc with kmalloc_array
  thermal: cpu_cooling: Rearrange struct cpufreq_cooling_device
  thermal: cpu_cooling: 'freq' can't be zero in cpufreq_state2power()
  thermal: cpu_cooling: don't store cpu_dev in cpufreq_cdev
  thermal: cpu_cooling: get_level() can't fail
  thermal: cpu_cooling: create structure for idle time stats
  thermal: cpu_cooling: merge frequency and power tables
  thermal: cpu_cooling: get rid of 'allowed_cpus'
  thermal: cpu_cooling: OPPs are registered for all CPUs
  thermal: cpu_cooling: store cpufreq policy
  cpufreq: create cpufreq_table_count_valid_entries()
  thermal: cpu_cooling: use cpufreq_policy to register cooling device
  thermal: cpu_cooling: get rid of a variable in cpufreq_set_cur_state()
  thermal: cpu_cooling: remove cpufreq_cooling_get_level()
  ...
zero-colors
Linus Torvalds 2017-07-14 13:12:32 -07:00
parent 907afe5923 5d72ed3567
commit 4d25ec1966
18 changed files with 344 additions and 421 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/cpufreq/arm_big_little.c
View File

@ -540,7 +540,7 @@ static void bL_cpufreq_ready(struct cpufreq_policy *policy)
&power_coefficient);
cdev[cur_cluster] = of_cpufreq_power_cooling_register(np,
policy->related_cpus, power_coefficient, NULL);
policy, power_coefficient, NULL);
if (IS_ERR(cdev[cur_cluster])) {
dev_err(cpu_dev,
"running cpufreq without cooling device: %ld\n",

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

@ -326,7 +326,7 @@ static void cpufreq_ready(struct cpufreq_policy *policy)
&power_coefficient);
priv->cdev = of_cpufreq_power_cooling_register(np,
policy->related_cpus, power_coefficient, NULL);
policy, power_coefficient, NULL);
if (IS_ERR(priv->cdev)) {
dev_err(priv->cpu_dev,
"running cpufreq without cooling device: %ld\n",

13
drivers/cpufreq/cpufreq_stats.c
View File

@ -170,11 +170,10 @@ void cpufreq_stats_create_table(struct cpufreq_policy *policy)
unsigned int i = 0, count = 0, ret = -ENOMEM;
struct cpufreq_stats *stats;
unsigned int alloc_size;
struct cpufreq_frequency_table *pos, *table;
struct cpufreq_frequency_table *pos;
/* We need cpufreq table for creating stats table */
table = policy->freq_table;
if (unlikely(!table))
count = cpufreq_table_count_valid_entries(policy);
if (!count)
return;
/* stats already initialized */
@ -185,10 +184,6 @@ void cpufreq_stats_create_table(struct cpufreq_policy *policy)
if (!stats)
return;
/* Find total allocation size */
cpufreq_for_each_valid_entry(pos, table)
count++;
alloc_size = count * sizeof(int) + count * sizeof(u64);
alloc_size += count * count * sizeof(int);
@ -205,7 +200,7 @@ void cpufreq_stats_create_table(struct cpufreq_policy *policy)
stats->max_state = count;
/* Find valid-unique entries */
cpufreq_for_each_valid_entry(pos, table)
cpufreq_for_each_valid_entry(pos, policy->freq_table)
if (freq_table_get_index(stats, pos->frequency) == -1)
stats->freq_table[i++] = pos->frequency;

2
drivers/cpufreq/dbx500-cpufreq.c
View File

@ -43,7 +43,7 @@ static int dbx500_cpufreq_exit(struct cpufreq_policy *policy)
static void dbx500_cpufreq_ready(struct cpufreq_policy *policy)
{
cdev = cpufreq_cooling_register(policy->cpus);
cdev = cpufreq_cooling_register(policy);
if (IS_ERR(cdev))
pr_err("Failed to register cooling device %ld\n", PTR_ERR(cdev));
else

4
drivers/cpufreq/mt8173-cpufreq.c
View File

@ -320,9 +320,7 @@ static void mtk_cpufreq_ready(struct cpufreq_policy *policy)
of_property_read_u32(np, DYNAMIC_POWER, &capacitance);
info->cdev = of_cpufreq_power_cooling_register(np,
policy->related_cpus,
capacitance,
NULL);
policy, capacitance, NULL);
if (IS_ERR(info->cdev)) {
dev_err(info->cpu_dev,

3
drivers/cpufreq/qoriq-cpufreq.c
View File

@ -278,8 +278,7 @@ static void qoriq_cpufreq_ready(struct cpufreq_policy *policy)
struct device_node *np = of_get_cpu_node(policy->cpu, NULL);
if (of_find_property(np, "#cooling-cells", NULL)) {
cpud->cdev = of_cpufreq_cooling_register(np,
policy->related_cpus);
cpud->cdev = of_cpufreq_cooling_register(np, policy);
if (IS_ERR(cpud->cdev) && PTR_ERR(cpud->cdev) != -ENOSYS) {
pr_err("cpu%d is not running as cooling device: %ld\n",

1
drivers/thermal/broadcom/bcm2835_thermal.c
View File

@ -245,7 +245,6 @@ static int bcm2835_thermal_probe(struct platform_device *pdev)
*/
err = tz->ops->get_trip_temp(tz, 0, &trip_temp);
if (err < 0) {
err = PTR_ERR(tz);
dev_err(&pdev->dev,
"Not able to read trip_temp: %d\n",
err);

613
drivers/thermal/cpu_cooling.c
View File

File diff suppressed because it is too large Load Diff

1
drivers/thermal/fair_share.c
View File

@ -71,6 +71,7 @@ static long get_target_state(struct thermal_zone_device *tz,
/**
* fair_share_throttle - throttles devices associated with the given zone
* @tz - thermal_zone_device
* @trip - trip point index
*
* Throttling Logic: This uses three parameters to calculate the new
* throttle state of the cooling devices associated with the given zone.

5
drivers/thermal/hisi_thermal.c
View File

@ -397,8 +397,11 @@ static int hisi_thermal_suspend(struct device *dev)
static int hisi_thermal_resume(struct device *dev)
{
struct hisi_thermal_data *data = dev_get_drvdata(dev);
int ret;
clk_prepare_enable(data->clk);
ret = clk_prepare_enable(data->clk);
if (ret)
return ret;
data->irq_enabled = true;
hisi_thermal_enable_bind_irq_sensor(data);

27
drivers/thermal/imx_thermal.c
View File

@ -8,6 +8,7 @@
*/
#include <linux/clk.h>
#include <linux/cpufreq.h>
#include <linux/cpu_cooling.h>
#include <linux/delay.h>
#include <linux/device.h>
@ -88,6 +89,7 @@ static struct thermal_soc_data thermal_imx6sx_data = {
};
struct imx_thermal_data {
struct cpufreq_policy *policy;
struct thermal_zone_device *tz;
struct thermal_cooling_device *cdev;
enum thermal_device_mode mode;
@ -525,13 +527,18 @@ static int imx_thermal_probe(struct platform_device *pdev)
regmap_write(map, MISC0 + REG_SET, MISC0_REFTOP_SELBIASOFF);
regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);
data->cdev = cpufreq_cooling_register(cpu_present_mask);
data->policy = cpufreq_cpu_get(0);
if (!data->policy) {
pr_debug("%s: CPUFreq policy not found\n", __func__);
return -EPROBE_DEFER;
}
data->cdev = cpufreq_cooling_register(data->policy);
if (IS_ERR(data->cdev)) {
ret = PTR_ERR(data->cdev);
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev,
"failed to register cpufreq cooling device: %d\n",
ret);
dev_err(&pdev->dev,
"failed to register cpufreq cooling device: %d\n", ret);
cpufreq_cpu_put(data->policy);
return ret;
}
@ -542,6 +549,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
dev_err(&pdev->dev,
"failed to get thermal clk: %d\n", ret);
cpufreq_cooling_unregister(data->cdev);
cpufreq_cpu_put(data->policy);
return ret;
}
@ -556,6 +564,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
if (ret) {
dev_err(&pdev->dev, "failed to enable thermal clk: %d\n", ret);
cpufreq_cooling_unregister(data->cdev);
cpufreq_cpu_put(data->policy);
return ret;
}
@ -571,6 +580,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
"failed to register thermal zone device %d\n", ret);
clk_disable_unprepare(data->thermal_clk);
cpufreq_cooling_unregister(data->cdev);
cpufreq_cpu_put(data->policy);
return ret;
}
@ -599,6 +609,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
clk_disable_unprepare(data->thermal_clk);
thermal_zone_device_unregister(data->tz);
cpufreq_cooling_unregister(data->cdev);
cpufreq_cpu_put(data->policy);
return ret;
}
@ -620,6 +631,7 @@ static int imx_thermal_remove(struct platform_device *pdev)
thermal_zone_device_unregister(data->tz);
cpufreq_cooling_unregister(data->cdev);
cpufreq_cpu_put(data->policy);
return 0;
}
@ -648,8 +660,11 @@ static int imx_thermal_resume(struct device *dev)
{
struct imx_thermal_data *data = dev_get_drvdata(dev);
struct regmap *map = data->tempmon;
int ret;
clk_prepare_enable(data->thermal_clk);
ret = clk_prepare_enable(data->thermal_clk);
if (ret)
return ret;
/* Enabled thermal sensor after resume */
regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);

6
drivers/thermal/int340x_thermal/acpi_thermal_rel.c
View File

@ -62,8 +62,8 @@ static int acpi_thermal_rel_release(struct inode *inode, struct file *file)
* acpi_parse_trt - Thermal Relationship Table _TRT for passive cooling
*
* @handle: ACPI handle of the device contains _TRT
* @art_count: the number of valid entries resulted from parsing _TRT
* @artp: pointer to pointer of array of art entries in parsing result
* @trt_count: the number of valid entries resulted from parsing _TRT
* @trtp: pointer to pointer of array of _TRT entries in parsing result
* @create_dev: whether to create platform devices for target and source
*
*/
@ -208,7 +208,7 @@ int acpi_parse_art(acpi_handle handle, int *art_count, struct art **artp,
if (art->target) {
result = acpi_bus_get_device(art->target, &adev);
if (result)
pr_warn("Failed to get source ACPI device\n");
pr_warn("Failed to get target ACPI device\n");
}
}

12
drivers/thermal/int340x_thermal/int3403_thermal.c
View File

@ -238,8 +238,16 @@ static int int3403_add(struct platform_device *pdev)
status = acpi_evaluate_integer(priv->adev->handle, "PTYP",
NULL, &priv->type);
if (ACPI_FAILURE(status)) {
result = -EINVAL;
goto err;
unsigned long long tmp;
status = acpi_evaluate_integer(priv->adev->handle, "_TMP",
NULL, &tmp);
if (ACPI_FAILURE(status)) {
result = -EINVAL;
goto err;
} else {
priv->type = INT3403_TYPE_SENSOR;
}
}
platform_set_drvdata(pdev, priv);

3
drivers/thermal/step_wise.c
View File

@ -186,8 +186,7 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
/**
* step_wise_throttle - throttles devices associated with the given zone
* @tz - thermal_zone_device
* @trip - the trip point
* @trip_type - type of the trip point
* @trip - trip point index
*
* Throttling Logic: This uses the trend of the thermal zone to throttle.
* If the thermal zone is 'heating up' this throttles all the cooling

22
drivers/thermal/ti-soc-thermal/ti-thermal-common.c
View File

@ -28,6 +28,7 @@
#include <linux/kernel.h>
#include <linux/workqueue.h>
#include <linux/thermal.h>
#include <linux/cpufreq.h>
#include <linux/cpumask.h>
#include <linux/cpu_cooling.h>
#include <linux/of.h>
@ -37,6 +38,7 @@
/* common data structures */
struct ti_thermal_data {
struct cpufreq_policy *policy;
struct thermal_zone_device *ti_thermal;
struct thermal_zone_device *pcb_tz;
struct thermal_cooling_device *cool_dev;
@ -247,15 +249,19 @@ int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
if (!data)
return -EINVAL;
data->policy = cpufreq_cpu_get(0);
if (!data->policy) {
pr_debug("%s: CPUFreq policy not found\n", __func__);
return -EPROBE_DEFER;
}
/* Register cooling device */
data->cool_dev = cpufreq_cooling_register(cpu_present_mask);
data->cool_dev = cpufreq_cooling_register(data->policy);
if (IS_ERR(data->cool_dev)) {
int ret = PTR_ERR(data->cool_dev);
if (ret != -EPROBE_DEFER)
dev_err(bgp->dev,
"Failed to register cpu cooling device %d\n",
ret);
dev_err(bgp->dev, "Failed to register cpu cooling device %d\n",
ret);
cpufreq_cpu_put(data->policy);
return ret;
}
@ -270,8 +276,10 @@ int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
data = ti_bandgap_get_sensor_data(bgp, id);
if (data)
if (data) {
cpufreq_cooling_unregister(data->cool_dev);
cpufreq_cpu_put(data->policy);
}
return 0;
}

3
drivers/thermal/user_space.c
View File

@ -24,12 +24,13 @@
#include <linux/thermal.h>
#include <linux/slab.h>
#include "thermal_core.h"
/**
* notify_user_space - Notifies user space about thermal events
* @tz - thermal_zone_device
* @trip - Trip point index
* @trip - trip point index
*
* This function notifies the user space through UEvents.
*/

32
include/linux/cpu_cooling.h
View File

@ -28,47 +28,49 @@
#include <linux/thermal.h>
#include <linux/cpumask.h>
struct cpufreq_policy;
typedef int (*get_static_t)(cpumask_t *cpumask, int interval,
unsigned long voltage, u32 *power);
#ifdef CONFIG_CPU_THERMAL
/**
* cpufreq_cooling_register - function to create cpufreq cooling device.
* @clip_cpus: cpumask of cpus where the frequency constraints will happen
* @policy: cpufreq policy.
*/
struct thermal_cooling_device *
cpufreq_cooling_register(const struct cpumask *clip_cpus);
cpufreq_cooling_register(struct cpufreq_policy *policy);
struct thermal_cooling_device *
cpufreq_power_cooling_register(const struct cpumask *clip_cpus,
cpufreq_power_cooling_register(struct cpufreq_policy *policy,
u32 capacitance, get_static_t plat_static_func);
/**
* of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
* @np: a valid struct device_node to the cooling device device tree node.
* @clip_cpus: cpumask of cpus where the frequency constraints will happen
* @policy: cpufreq policy.
*/
#ifdef CONFIG_THERMAL_OF
struct thermal_cooling_device *
of_cpufreq_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus);
struct cpufreq_policy *policy);
struct thermal_cooling_device *
of_cpufreq_power_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus,
struct cpufreq_policy *policy,
u32 capacitance,
get_static_t plat_static_func);
#else
static inline struct thermal_cooling_device *
of_cpufreq_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus)
struct cpufreq_policy *policy)
{
return ERR_PTR(-ENOSYS);
}
static inline struct thermal_cooling_device *
of_cpufreq_power_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus,
struct cpufreq_policy *policy,
u32 capacitance,
get_static_t plat_static_func)
{
@ -82,15 +84,14 @@ of_cpufreq_power_cooling_register(struct device_node *np,
*/
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq);
#else /* !CONFIG_CPU_THERMAL */
static inline struct thermal_cooling_device *
cpufreq_cooling_register(const struct cpumask *clip_cpus)
cpufreq_cooling_register(struct cpufreq_policy *policy)
{
return ERR_PTR(-ENOSYS);
}
static inline struct thermal_cooling_device *
cpufreq_power_cooling_register(const struct cpumask *clip_cpus,
cpufreq_power_cooling_register(struct cpufreq_policy *policy,
u32 capacitance, get_static_t plat_static_func)
{
return NULL;
@ -98,14 +99,14 @@ cpufreq_power_cooling_register(const struct cpumask *clip_cpus,
static inline struct thermal_cooling_device *
of_cpufreq_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus)
struct cpufreq_policy *policy)
{
return ERR_PTR(-ENOSYS);
}
static inline struct thermal_cooling_device *
of_cpufreq_power_cooling_register(struct device_node *np,
const struct cpumask *clip_cpus,
struct cpufreq_policy *policy,
u32 capacitance,
get_static_t plat_static_func)
{
@ -117,11 +118,6 @@ void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
{
return;
}
static inline
unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq)
{
return THERMAL_CSTATE_INVALID;
}
#endif /* CONFIG_CPU_THERMAL */
#endif /* __CPU_COOLING_H__ */

14
include/linux/cpufreq.h
View File

@ -862,6 +862,20 @@ static inline int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
return -EINVAL;
}
}
static inline int cpufreq_table_count_valid_entries(const struct cpufreq_policy *policy)
{
struct cpufreq_frequency_table *pos;
int count = 0;
if (unlikely(!policy->freq_table))
return 0;
cpufreq_for_each_valid_entry(pos, policy->freq_table)
count++;
return count;
}
#else
static inline int cpufreq_boost_trigger_state(int state)
{