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Date: Fri, 1 Dec 2023 20:07:56 +0100
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: rjw@...ysocki.net
Cc: caleb.connolly@...aro.org, lina.iyer@...aro.org,
linux-pm@...r.kernel.org, mani@...nel.org,
linux-kernel@...r.kernel.org, lukasz.luba@....com
Subject: [RFC PATCH 1/2] pm_qos: Rename freq to interval constraint
The frequency pm_qos relies on a couple of values, the min and max
frequencies. However more pm_qos will be added with the same logic of
a couple of min and max. Instead of writing new set of constraints as
well as type, etc... let's rename freq_* to a more generic name
interval_*
That way, new qos interval based can be added easily.
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
drivers/base/power/qos.c | 4 +--
drivers/powercap/dtpm_cpu.c | 2 +-
drivers/thermal/cpufreq_cooling.c | 2 +-
include/linux/cpufreq.h | 6 ++--
include/linux/pm_qos.h | 55 ++++++++++++++++---------------
kernel/power/qos.c | 53 +++++++++++++++--------------
6 files changed, 61 insertions(+), 61 deletions(-)
diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index 8e93167f1783..561d2a0e106c 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -285,14 +285,14 @@ void dev_pm_qos_constraints_destroy(struct device *dev)
memset(req, 0, sizeof(*req));
}
- c = &qos->freq.min_freq;
+ c = &qos->freq.min;
plist_for_each_entry_safe(req, tmp, &c->list, data.freq.pnode) {
apply_constraint(req, PM_QOS_REMOVE_REQ,
PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE);
memset(req, 0, sizeof(*req));
}
- c = &qos->freq.max_freq;
+ c = &qos->freq.max;
plist_for_each_entry_safe(req, tmp, &c->list, data.freq.pnode) {
apply_constraint(req, PM_QOS_REMOVE_REQ,
PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE);
diff --git a/drivers/powercap/dtpm_cpu.c b/drivers/powercap/dtpm_cpu.c
index 2ff7717530bf..6587c94d0127 100644
--- a/drivers/powercap/dtpm_cpu.c
+++ b/drivers/powercap/dtpm_cpu.c
@@ -28,7 +28,7 @@
struct dtpm_cpu {
struct dtpm dtpm;
- struct freq_qos_request qos_req;
+ struct interval_qos_request qos_req;
int cpu;
};
diff --git a/drivers/thermal/cpufreq_cooling.c b/drivers/thermal/cpufreq_cooling.c
index e2cc7bd30862..72e9f0cde55c 100644
--- a/drivers/thermal/cpufreq_cooling.c
+++ b/drivers/thermal/cpufreq_cooling.c
@@ -77,7 +77,7 @@ struct cpufreq_cooling_device {
#ifndef CONFIG_SMP
struct time_in_idle *idle_time;
#endif
- struct freq_qos_request qos_req;
+ struct interval_qos_request qos_req;
};
#ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 71d186d6933a..7e2d66c37535 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -80,9 +80,9 @@ struct cpufreq_policy {
struct work_struct update; /* if update_policy() needs to be
* called, but you're in IRQ context */
- struct freq_constraints constraints;
- struct freq_qos_request *min_freq_req;
- struct freq_qos_request *max_freq_req;
+ struct interval_constraints constraints;
+ struct interval_qos_request *min_freq_req;
+ struct interval_qos_request *max_freq_req;
struct cpufreq_frequency_table *freq_table;
enum cpufreq_table_sorting freq_table_sorted;
diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index 4a69d4af3ff8..a662ac918e3e 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -77,25 +77,26 @@ struct pm_qos_flags {
#define FREQ_QOS_MIN_DEFAULT_VALUE 0
#define FREQ_QOS_MAX_DEFAULT_VALUE S32_MAX
-enum freq_qos_req_type {
- FREQ_QOS_MIN = 1,
+enum interval_qos_req_type {
+ INTERVAL_QOS_MIN = 1,
+ INTERVAL_QOS_MAX,
+ FREQ_QOS_MIN,
FREQ_QOS_MAX,
};
-struct freq_constraints {
- struct pm_qos_constraints min_freq;
- struct blocking_notifier_head min_freq_notifiers;
- struct pm_qos_constraints max_freq;
- struct blocking_notifier_head max_freq_notifiers;
+struct interval_constraints {
+ struct pm_qos_constraints min;
+ struct blocking_notifier_head min_notifiers;
+ struct pm_qos_constraints max;
+ struct blocking_notifier_head max_notifiers;
};
-struct freq_qos_request {
- enum freq_qos_req_type type;
+struct interval_qos_request {
+ enum interval_qos_req_type type;
struct plist_node pnode;
- struct freq_constraints *qos;
+ struct interval_constraints *qos;
};
-
enum dev_pm_qos_req_type {
DEV_PM_QOS_RESUME_LATENCY = 1,
DEV_PM_QOS_LATENCY_TOLERANCE,
@@ -109,7 +110,7 @@ struct dev_pm_qos_request {
union {
struct plist_node pnode;
struct pm_qos_flags_request flr;
- struct freq_qos_request freq;
+ struct interval_qos_request freq;
} data;
struct device *dev;
};
@@ -117,7 +118,7 @@ struct dev_pm_qos_request {
struct dev_pm_qos {
struct pm_qos_constraints resume_latency;
struct pm_qos_constraints latency_tolerance;
- struct freq_constraints freq;
+ struct interval_constraints freq;
struct pm_qos_flags flags;
struct dev_pm_qos_request *resume_latency_req;
struct dev_pm_qos_request *latency_tolerance_req;
@@ -291,29 +292,29 @@ static inline s32 dev_pm_qos_raw_resume_latency(struct device *dev)
}
#endif
-static inline int freq_qos_request_active(struct freq_qos_request *req)
+static inline int freq_qos_request_active(struct interval_qos_request *req)
{
return !IS_ERR_OR_NULL(req->qos);
}
-void freq_constraints_init(struct freq_constraints *qos);
+void freq_constraints_init(struct interval_constraints *qos);
-s32 freq_qos_read_value(struct freq_constraints *qos,
- enum freq_qos_req_type type);
+s32 freq_qos_read_value(struct interval_constraints *qos,
+ enum interval_qos_req_type type);
-int freq_qos_add_request(struct freq_constraints *qos,
- struct freq_qos_request *req,
- enum freq_qos_req_type type, s32 value);
-int freq_qos_update_request(struct freq_qos_request *req, s32 new_value);
-int freq_qos_remove_request(struct freq_qos_request *req);
-int freq_qos_apply(struct freq_qos_request *req,
+int freq_qos_add_request(struct interval_constraints *qos,
+ struct interval_qos_request *req,
+ enum interval_qos_req_type type, s32 value);
+int freq_qos_update_request(struct interval_qos_request *req, s32 new_value);
+int freq_qos_remove_request(struct interval_qos_request *req);
+int freq_qos_apply(struct interval_qos_request *req,
enum pm_qos_req_action action, s32 value);
-int freq_qos_add_notifier(struct freq_constraints *qos,
- enum freq_qos_req_type type,
+int freq_qos_add_notifier(struct interval_constraints *qos,
+ enum interval_qos_req_type type,
struct notifier_block *notifier);
-int freq_qos_remove_notifier(struct freq_constraints *qos,
- enum freq_qos_req_type type,
+int freq_qos_remove_notifier(struct interval_constraints *qos,
+ enum interval_qos_req_type type,
struct notifier_block *notifier);
#endif
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 4244b069442e..6ff6c494f84d 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -440,26 +440,26 @@ static inline bool freq_qos_value_invalid(s32 value)
* freq_constraints_init - Initialize frequency QoS constraints.
* @qos: Frequency QoS constraints to initialize.
*/
-void freq_constraints_init(struct freq_constraints *qos)
+void freq_constraints_init(struct interval_constraints *qos)
{
struct pm_qos_constraints *c;
- c = &qos->min_freq;
+ c = &qos->min;
plist_head_init(&c->list);
c->target_value = FREQ_QOS_MIN_DEFAULT_VALUE;
c->default_value = FREQ_QOS_MIN_DEFAULT_VALUE;
c->no_constraint_value = FREQ_QOS_MIN_DEFAULT_VALUE;
c->type = PM_QOS_MAX;
- c->notifiers = &qos->min_freq_notifiers;
+ c->notifiers = &qos->min_notifiers;
BLOCKING_INIT_NOTIFIER_HEAD(c->notifiers);
- c = &qos->max_freq;
+ c = &qos->max;
plist_head_init(&c->list);
c->target_value = FREQ_QOS_MAX_DEFAULT_VALUE;
c->default_value = FREQ_QOS_MAX_DEFAULT_VALUE;
c->no_constraint_value = FREQ_QOS_MAX_DEFAULT_VALUE;
c->type = PM_QOS_MIN;
- c->notifiers = &qos->max_freq_notifiers;
+ c->notifiers = &qos->max_notifiers;
BLOCKING_INIT_NOTIFIER_HEAD(c->notifiers);
}
@@ -468,8 +468,8 @@ void freq_constraints_init(struct freq_constraints *qos)
* @qos: Constraints to evaluate.
* @type: QoS request type.
*/
-s32 freq_qos_read_value(struct freq_constraints *qos,
- enum freq_qos_req_type type)
+s32 freq_qos_read_value(struct interval_constraints *qos,
+ enum interval_qos_req_type type)
{
s32 ret;
@@ -477,15 +477,14 @@ s32 freq_qos_read_value(struct freq_constraints *qos,
case FREQ_QOS_MIN:
ret = IS_ERR_OR_NULL(qos) ?
FREQ_QOS_MIN_DEFAULT_VALUE :
- pm_qos_read_value(&qos->min_freq);
+ pm_qos_read_value(&qos->min);
break;
case FREQ_QOS_MAX:
ret = IS_ERR_OR_NULL(qos) ?
FREQ_QOS_MAX_DEFAULT_VALUE :
- pm_qos_read_value(&qos->max_freq);
+ pm_qos_read_value(&qos->max);
break;
default:
- WARN_ON(1);
ret = 0;
}
@@ -500,18 +499,18 @@ s32 freq_qos_read_value(struct freq_constraints *qos,
*
* This is only meant to be called from inside pm_qos, not drivers.
*/
-int freq_qos_apply(struct freq_qos_request *req,
- enum pm_qos_req_action action, s32 value)
+int freq_qos_apply(struct interval_qos_request *req,
+ enum pm_qos_req_action action, s32 value)
{
int ret;
switch(req->type) {
case FREQ_QOS_MIN:
- ret = pm_qos_update_target(&req->qos->min_freq, &req->pnode,
+ ret = pm_qos_update_target(&req->qos->min, &req->pnode,
action, value);
break;
case FREQ_QOS_MAX:
- ret = pm_qos_update_target(&req->qos->max_freq, &req->pnode,
+ ret = pm_qos_update_target(&req->qos->max, &req->pnode,
action, value);
break;
default:
@@ -535,9 +534,9 @@ int freq_qos_apply(struct freq_qos_request *req,
* Return 1 if the effective constraint value has changed, 0 if the effective
* constraint value has not changed, or a negative error code on failures.
*/
-int freq_qos_add_request(struct freq_constraints *qos,
- struct freq_qos_request *req,
- enum freq_qos_req_type type, s32 value)
+int freq_qos_add_request(struct interval_constraints *qos,
+ struct interval_qos_request *req,
+ enum interval_qos_req_type type, s32 value)
{
int ret;
@@ -571,7 +570,7 @@ EXPORT_SYMBOL_GPL(freq_qos_add_request);
* Return 1 if the effective constraint value has changed, 0 if the effective
* constraint value has not changed, or a negative error code on failures.
*/
-int freq_qos_update_request(struct freq_qos_request *req, s32 new_value)
+int freq_qos_update_request(struct interval_qos_request *req, s32 new_value)
{
if (!req || freq_qos_value_invalid(new_value))
return -EINVAL;
@@ -597,7 +596,7 @@ EXPORT_SYMBOL_GPL(freq_qos_update_request);
* Return 1 if the effective constraint value has changed, 0 if the effective
* constraint value has not changed, or a negative error code on failures.
*/
-int freq_qos_remove_request(struct freq_qos_request *req)
+int freq_qos_remove_request(struct interval_qos_request *req)
{
int ret;
@@ -622,8 +621,8 @@ EXPORT_SYMBOL_GPL(freq_qos_remove_request);
* @type: Request type.
* @notifier: Notifier block to add.
*/
-int freq_qos_add_notifier(struct freq_constraints *qos,
- enum freq_qos_req_type type,
+int freq_qos_add_notifier(struct interval_constraints *qos,
+ enum interval_qos_req_type type,
struct notifier_block *notifier)
{
int ret;
@@ -633,11 +632,11 @@ int freq_qos_add_notifier(struct freq_constraints *qos,
switch (type) {
case FREQ_QOS_MIN:
- ret = blocking_notifier_chain_register(qos->min_freq.notifiers,
+ ret = blocking_notifier_chain_register(qos->min.notifiers,
notifier);
break;
case FREQ_QOS_MAX:
- ret = blocking_notifier_chain_register(qos->max_freq.notifiers,
+ ret = blocking_notifier_chain_register(qos->max.notifiers,
notifier);
break;
default:
@@ -655,8 +654,8 @@ EXPORT_SYMBOL_GPL(freq_qos_add_notifier);
* @type: Request type.
* @notifier: Notifier block to remove.
*/
-int freq_qos_remove_notifier(struct freq_constraints *qos,
- enum freq_qos_req_type type,
+int freq_qos_remove_notifier(struct interval_constraints *qos,
+ enum interval_qos_req_type type,
struct notifier_block *notifier)
{
int ret;
@@ -666,11 +665,11 @@ int freq_qos_remove_notifier(struct freq_constraints *qos,
switch (type) {
case FREQ_QOS_MIN:
- ret = blocking_notifier_chain_unregister(qos->min_freq.notifiers,
+ ret = blocking_notifier_chain_unregister(qos->min.notifiers,
notifier);
break;
case FREQ_QOS_MAX:
- ret = blocking_notifier_chain_unregister(qos->max_freq.notifiers,
+ ret = blocking_notifier_chain_unregister(qos->max.notifiers,
notifier);
break;
default:
--
2.34.1
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