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Power management fixes for 5.19-rc5 

- Fix error code path issues related PROBE_DEFER handling in
    devfreq (Christian Marangi).
 
  - Revert an editing accident in SPDX-License line in the devfreq
    passive governor (Lukas Bulwahn).
 
  - Fix refcount leak in of_get_devfreq_events() in the exynos-ppmu
    devfreq driver (Miaoqian Lin).
 
  - Use HZ_PER_KHZ macro in the passive devfreq governor (Yicong Yang).
 
  - Fix missing of_node_put for qoriq and pmac32 driver (Liang He).
 
  - Fix issues around throttle interrupt for qcom driver (Stephen Boyd).
 
  - Add MT8186 to cpufreq-dt-platdev blocklist (AngeloGioacchino Del
    Regno).
 
  - Make amd-pstate enable CPPC on resume from S3 (Jinzhou Su).
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Merge tag 'pm-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix some issues in cpufreq drivers and some issues in devfreq:

   - Fix error code path issues related PROBE_DEFER handling in devfreq
     (Christian Marangi)

   - Revert an editing accident in SPDX-License line in the devfreq
     passive governor (Lukas Bulwahn)

   - Fix refcount leak in of_get_devfreq_events() in the exynos-ppmu
     devfreq driver (Miaoqian Lin)

   - Use HZ_PER_KHZ macro in the passive devfreq governor (Yicong Yang)

   - Fix missing of_node_put for qoriq and pmac32 driver (Liang He)

   - Fix issues around throttle interrupt for qcom driver (Stephen Boyd)

   - Add MT8186 to cpufreq-dt-platdev blocklist (AngeloGioacchino Del
     Regno)

   - Make amd-pstate enable CPPC on resume from S3 (Jinzhou Su)"

* tag 'pm-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / devfreq: passive: revert an editing accident in SPDX-License line
  PM / devfreq: Fix kernel warning with cpufreq passive register fail
  PM / devfreq: Rework freq_table to be local to devfreq struct
  PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events
  PM / devfreq: passive: Use HZ_PER_KHZ macro in units.h
  PM / devfreq: Fix cpufreq passive unregister erroring on PROBE_DEFER
  PM / devfreq: Mute warning on governor PROBE_DEFER
  PM / devfreq: Fix kernel panic with cpu based scaling to passive gov
  cpufreq: Add MT8186 to cpufreq-dt-platdev blocklist
  cpufreq: pmac32-cpufreq: Fix refcount leak bug
  cpufreq: qcom-hw: Don't do lmh things without a throttle interrupt
  drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c
  cpufreq: amd-pstate: Add resume and suspend callbacks
This commit is contained in:
Linus Torvalds 2022-07-01 12:55:28 -07:00
parent b336ad598a bc621588ff
commit 9ee7827668
9 changed files with 111 additions and 76 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/cpufreq/amd-pstate.c
View File

@ -566,6 +566,28 @@ static int amd_pstate_cpu_exit(struct cpufreq_policy *policy)
return 0;
}
static int amd_pstate_cpu_resume(struct cpufreq_policy *policy)
{
int ret;
ret = amd_pstate_enable(true);
if (ret)
pr_err("failed to enable amd-pstate during resume, return %d\n", ret);
return ret;
}
static int amd_pstate_cpu_suspend(struct cpufreq_policy *policy)
{
int ret;
ret = amd_pstate_enable(false);
if (ret)
pr_err("failed to disable amd-pstate during suspend, return %d\n", ret);
return ret;
}
/* Sysfs attributes */
/*
@ -636,6 +658,8 @@ static struct cpufreq_driver amd_pstate_driver = {
.target = amd_pstate_target,
.init = amd_pstate_cpu_init,
.exit = amd_pstate_cpu_exit,
.suspend = amd_pstate_cpu_suspend,
.resume = amd_pstate_cpu_resume,
.set_boost = amd_pstate_set_boost,
.name = "amd-pstate",
.attr = amd_pstate_attr,

1
drivers/cpufreq/cpufreq-dt-platdev.c
View File

@ -127,6 +127,7 @@ static const struct of_device_id blocklist[] __initconst = {
{ .compatible = "mediatek,mt8173", },
{ .compatible = "mediatek,mt8176", },
{ .compatible = "mediatek,mt8183", },
{ .compatible = "mediatek,mt8186", },
{ .compatible = "mediatek,mt8365", },
{ .compatible = "mediatek,mt8516", },

4
drivers/cpufreq/pmac32-cpufreq.c
View File

@ -470,6 +470,10 @@ static int pmac_cpufreq_init_MacRISC3(struct device_node *cpunode)
if (slew_done_gpio_np)
slew_done_gpio = read_gpio(slew_done_gpio_np);
of_node_put(volt_gpio_np);
of_node_put(freq_gpio_np);
of_node_put(slew_done_gpio_np);
/* If we use the frequency GPIOs, calculate the min/max speeds based
* on the bus frequencies
*/

6
drivers/cpufreq/qcom-cpufreq-hw.c
View File

@ -442,6 +442,9 @@ static int qcom_cpufreq_hw_cpu_online(struct cpufreq_policy *policy)
struct platform_device *pdev = cpufreq_get_driver_data();
int ret;
if (data->throttle_irq <= 0)
return 0;
ret = irq_set_affinity_hint(data->throttle_irq, policy->cpus);
if (ret)
dev_err(&pdev->dev, "Failed to set CPU affinity of %s[%d]\n",
@ -469,6 +472,9 @@ static int qcom_cpufreq_hw_cpu_offline(struct cpufreq_policy *policy)
static void qcom_cpufreq_hw_lmh_exit(struct qcom_cpufreq_data *data)
{
if (data->throttle_irq <= 0)
return;
free_irq(data->throttle_irq, data);
}

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

@ -275,6 +275,7 @@ static int qoriq_cpufreq_probe(struct platform_device *pdev)
np = of_find_matching_node(NULL, qoriq_cpufreq_blacklist);
if (np) {
of_node_put(np);
dev_info(&pdev->dev, "Disabling due to erratum A-008083");
return -ENODEV;
}

76
drivers/devfreq/devfreq.c
View File

@ -123,7 +123,7 @@ void devfreq_get_freq_range(struct devfreq *devfreq,
unsigned long *min_freq,
unsigned long *max_freq)
{
unsigned long *freq_table = devfreq->profile->freq_table;
unsigned long *freq_table = devfreq->freq_table;
s32 qos_min_freq, qos_max_freq;
lockdep_assert_held(&devfreq->lock);
@ -133,11 +133,11 @@ void devfreq_get_freq_range(struct devfreq *devfreq,
* The devfreq drivers can initialize this in either ascending or
* descending order and devfreq core supports both.
*/
if (freq_table[0] < freq_table[devfreq->profile->max_state - 1]) {
if (freq_table[0] < freq_table[devfreq->max_state - 1]) {
*min_freq = freq_table[0];
*max_freq = freq_table[devfreq->profile->max_state - 1];
*max_freq = freq_table[devfreq->max_state - 1];
} else {
*min_freq = freq_table[devfreq->profile->max_state - 1];
*min_freq = freq_table[devfreq->max_state - 1];
*max_freq = freq_table[0];
}
@ -169,8 +169,8 @@ static int devfreq_get_freq_level(struct devfreq *devfreq, unsigned long freq)
{
int lev;
for (lev = 0; lev < devfreq->profile->max_state; lev++)
if (freq == devfreq->profile->freq_table[lev])
for (lev = 0; lev < devfreq->max_state; lev++)
if (freq == devfreq->freq_table[lev])
return lev;
return -EINVAL;
@ -178,7 +178,6 @@ static int devfreq_get_freq_level(struct devfreq *devfreq, unsigned long freq)
static int set_freq_table(struct devfreq *devfreq)
{
struct devfreq_dev_profile *profile = devfreq->profile;
struct dev_pm_opp *opp;
unsigned long freq;
int i, count;
@ -188,25 +187,22 @@ static int set_freq_table(struct devfreq *devfreq)
if (count <= 0)
return -EINVAL;
profile->max_state = count;
profile->freq_table = devm_kcalloc(devfreq->dev.parent,
profile->max_state,
sizeof(*profile->freq_table),
GFP_KERNEL);
if (!profile->freq_table) {
profile->max_state = 0;
devfreq->max_state = count;
devfreq->freq_table = devm_kcalloc(devfreq->dev.parent,
devfreq->max_state,
sizeof(*devfreq->freq_table),
GFP_KERNEL);
if (!devfreq->freq_table)
return -ENOMEM;
}
for (i = 0, freq = 0; i < profile->max_state; i++, freq++) {
for (i = 0, freq = 0; i < devfreq->max_state; i++, freq++) {
opp = dev_pm_opp_find_freq_ceil(devfreq->dev.parent, &freq);
if (IS_ERR(opp)) {
devm_kfree(devfreq->dev.parent, profile->freq_table);
profile->max_state = 0;
devm_kfree(devfreq->dev.parent, devfreq->freq_table);
return PTR_ERR(opp);
}
dev_pm_opp_put(opp);
profile->freq_table[i] = freq;
devfreq->freq_table[i] = freq;
}
return 0;
@ -246,7 +242,7 @@ int devfreq_update_status(struct devfreq *devfreq, unsigned long freq)
if (lev != prev_lev) {
devfreq->stats.trans_table[
(prev_lev * devfreq->profile->max_state) + lev]++;
(prev_lev * devfreq->max_state) + lev]++;
devfreq->stats.total_trans++;
}
@ -835,6 +831,9 @@ struct devfreq *devfreq_add_device(struct device *dev,
if (err < 0)
goto err_dev;
mutex_lock(&devfreq->lock);
} else {
devfreq->freq_table = devfreq->profile->freq_table;
devfreq->max_state = devfreq->profile->max_state;
}
devfreq->scaling_min_freq = find_available_min_freq(devfreq);
@ -870,8 +869,8 @@ struct devfreq *devfreq_add_device(struct device *dev,
devfreq->stats.trans_table = devm_kzalloc(&devfreq->dev,
array3_size(sizeof(unsigned int),
devfreq->profile->max_state,
devfreq->profile->max_state),
devfreq->max_state,
devfreq->max_state),
GFP_KERNEL);
if (!devfreq->stats.trans_table) {
mutex_unlock(&devfreq->lock);
@ -880,7 +879,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
}
devfreq->stats.time_in_state = devm_kcalloc(&devfreq->dev,
devfreq->profile->max_state,
devfreq->max_state,
sizeof(*devfreq->stats.time_in_state),
GFP_KERNEL);
if (!devfreq->stats.time_in_state) {
@ -932,8 +931,9 @@ struct devfreq *devfreq_add_device(struct device *dev,
err = devfreq->governor->event_handler(devfreq, DEVFREQ_GOV_START,
NULL);
if (err) {
dev_err(dev, "%s: Unable to start governor for the device\n",
__func__);
dev_err_probe(dev, err,
"%s: Unable to start governor for the device\n",
__func__);
goto err_init;
}
create_sysfs_files(devfreq, devfreq->governor);
@ -1665,9 +1665,9 @@ static ssize_t available_frequencies_show(struct device *d,
mutex_lock(&df->lock);
for (i = 0; i < df->profile->max_state; i++)
for (i = 0; i < df->max_state; i++)
count += scnprintf(&buf[count], (PAGE_SIZE - count - 2),
"%lu ", df->profile->freq_table[i]);
"%lu ", df->freq_table[i]);
mutex_unlock(&df->lock);
/* Truncate the trailing space */
@ -1690,7 +1690,7 @@ static ssize_t trans_stat_show(struct device *dev,
if (!df->profile)
return -EINVAL;
max_state = df->profile->max_state;
max_state = df->max_state;
if (max_state == 0)
return sprintf(buf, "Not Supported.\n");
@ -1707,19 +1707,17 @@ static ssize_t trans_stat_show(struct device *dev,
len += sprintf(buf + len, " :");
for (i = 0; i < max_state; i++)
len += sprintf(buf + len, "%10lu",
df->profile->freq_table[i]);
df->freq_table[i]);
len += sprintf(buf + len, " time(ms)\n");
for (i = 0; i < max_state; i++) {
if (df->profile->freq_table[i]
== df->previous_freq) {
if (df->freq_table[i] == df->previous_freq)
len += sprintf(buf + len, "*");
} else {
else
len += sprintf(buf + len, " ");
}
len += sprintf(buf + len, "%10lu:",
df->profile->freq_table[i]);
len += sprintf(buf + len, "%10lu:", df->freq_table[i]);
for (j = 0; j < max_state; j++)
len += sprintf(buf + len, "%10u",
df->stats.trans_table[(i * max_state) + j]);
@ -1743,7 +1741,7 @@ static ssize_t trans_stat_store(struct device *dev,
if (!df->profile)
return -EINVAL;
if (df->profile->max_state == 0)
if (df->max_state == 0)
return count;
err = kstrtoint(buf, 10, &value);
@ -1751,11 +1749,11 @@ static ssize_t trans_stat_store(struct device *dev,
return -EINVAL;
mutex_lock(&df->lock);
memset(df->stats.time_in_state, 0, (df->profile->max_state *
memset(df->stats.time_in_state, 0, (df->max_state *
sizeof(*df->stats.time_in_state)));
memset(df->stats.trans_table, 0, array3_size(sizeof(unsigned int),
df->profile->max_state,
df->profile->max_state));
df->max_state,
df->max_state));
df->stats.total_trans = 0;
df->stats.last_update = get_jiffies_64();
mutex_unlock(&df->lock);

8
drivers/devfreq/event/exynos-ppmu.c
View File

@ -519,15 +519,19 @@ static int of_get_devfreq_events(struct device_node *np,
count = of_get_child_count(events_np);
desc = devm_kcalloc(dev, count, sizeof(*desc), GFP_KERNEL);
if (!desc)
if (!desc) {
of_node_put(events_np);
return -ENOMEM;
}
info->num_events = count;
of_id = of_match_device(exynos_ppmu_id_match, dev);
if (of_id)
info->ppmu_type = (enum exynos_ppmu_type)of_id->data;
else
else {
of_node_put(events_np);
return -EINVAL;
}
j = 0;
for_each_child_of_node(events_np, node) {

62
drivers/devfreq/governor_passive.c
View File

@ -1,4 +1,4 @@
// SPDX-License-Identifier: GPL-2.0-only
// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/drivers/devfreq/governor_passive.c
*
@ -14,10 +14,9 @@
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/devfreq.h>
#include <linux/units.h>
#include "governor.h"
#define HZ_PER_KHZ 1000
static struct devfreq_cpu_data *
get_parent_cpu_data(struct devfreq_passive_data *p_data,
struct cpufreq_policy *policy)
@ -34,6 +33,20 @@ get_parent_cpu_data(struct devfreq_passive_data *p_data,
return NULL;
}
static void delete_parent_cpu_data(struct devfreq_passive_data *p_data)
{
struct devfreq_cpu_data *parent_cpu_data, *tmp;
list_for_each_entry_safe(parent_cpu_data, tmp, &p_data->cpu_data_list, node) {
list_del(&parent_cpu_data->node);
if (parent_cpu_data->opp_table)
dev_pm_opp_put_opp_table(parent_cpu_data->opp_table);
kfree(parent_cpu_data);
}
}
static unsigned long get_target_freq_by_required_opp(struct device *p_dev,
struct opp_table *p_opp_table,
struct opp_table *opp_table,
@ -131,18 +144,18 @@ static int get_target_freq_with_devfreq(struct devfreq *devfreq,
goto out;
/* Use interpolation if required opps is not available */
for (i = 0; i < parent_devfreq->profile->max_state; i++)
if (parent_devfreq->profile->freq_table[i] == *freq)
for (i = 0; i < parent_devfreq->max_state; i++)
if (parent_devfreq->freq_table[i] == *freq)
break;
if (i == parent_devfreq->profile->max_state)
if (i == parent_devfreq->max_state)
return -EINVAL;
if (i < devfreq->profile->max_state) {
child_freq = devfreq->profile->freq_table[i];
if (i < devfreq->max_state) {
child_freq = devfreq->freq_table[i];
} else {
count = devfreq->profile->max_state;
child_freq = devfreq->profile->freq_table[count - 1];
count = devfreq->max_state;
child_freq = devfreq->freq_table[count - 1];
}
out:
@ -222,8 +235,7 @@ static int cpufreq_passive_unregister_notifier(struct devfreq *devfreq)
{
struct devfreq_passive_data *p_data
= (struct devfreq_passive_data *)devfreq->data;
struct devfreq_cpu_data *parent_cpu_data;
int cpu, ret = 0;
int ret;
if (p_data->nb.notifier_call) {
ret = cpufreq_unregister_notifier(&p_data->nb,
@ -232,27 +244,9 @@ static int cpufreq_passive_unregister_notifier(struct devfreq *devfreq)
return ret;
}
for_each_possible_cpu(cpu) {
struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
if (!policy) {
ret = -EINVAL;
continue;
}
delete_parent_cpu_data(p_data);
parent_cpu_data = get_parent_cpu_data(p_data, policy);
if (!parent_cpu_data) {
cpufreq_cpu_put(policy);
continue;
}
list_del(&parent_cpu_data->node);
if (parent_cpu_data->opp_table)
dev_pm_opp_put_opp_table(parent_cpu_data->opp_table);
kfree(parent_cpu_data);
cpufreq_cpu_put(policy);
}
return ret;
return 0;
}
static int cpufreq_passive_register_notifier(struct devfreq *devfreq)
@ -336,7 +330,6 @@ static int cpufreq_passive_register_notifier(struct devfreq *devfreq)
err_put_policy:
cpufreq_cpu_put(policy);
err:
WARN_ON(cpufreq_passive_unregister_notifier(devfreq));
return ret;
}
@ -407,8 +400,7 @@ static int devfreq_passive_event_handler(struct devfreq *devfreq,
if (!p_data)
return -EINVAL;
if (!p_data->this)
p_data->this = devfreq;
p_data->this = devfreq;
switch (event) {
case DEVFREQ_GOV_START:

5
include/linux/devfreq.h
View File

@ -148,6 +148,8 @@ struct devfreq_stats {
* reevaluate operable frequencies. Devfreq users may use
* devfreq.nb to the corresponding register notifier call chain.
* @work: delayed work for load monitoring.
* @freq_table: current frequency table used by the devfreq driver.
* @max_state: count of entry present in the frequency table.
* @previous_freq: previously configured frequency value.
* @last_status: devfreq user device info, performance statistics
* @data: Private data of the governor. The devfreq framework does not
@ -185,6 +187,9 @@ struct devfreq {
struct notifier_block nb;
struct delayed_work work;
unsigned long *freq_table;
unsigned int max_state;
unsigned long previous_freq;
struct devfreq_dev_status last_status;