[lkml]   [2020]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 12/28] PM: QoS: Adjust pm_qos_request() signature and reorder pm_qos.h
From: "Rafael J. Wysocki" <>

Change the return type of pm_qos_request() to be the same as the
one of pm_qos_read_value() called by it internally and stop exporting
it to modules (because its only caller, cpuidle, is not modular).

Also move the pm_qos_read_value() header away from the CPU latency
QoS API function headers in pm_qos.h (because it technically does
not belong to that API).

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <>
include/linux/pm_qos.h | 6 +++---
kernel/power/qos.c | 3 +--
2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index a3e0bfc6c470..3c4bee29ecda 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -137,20 +137,20 @@ static inline int dev_pm_qos_request_active(struct dev_pm_qos_request *req)
return req->dev != NULL;

+s32 pm_qos_read_value(struct pm_qos_constraints *c);
int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node,
enum pm_qos_req_action action, int value);
bool pm_qos_update_flags(struct pm_qos_flags *pqf,
struct pm_qos_flags_request *req,
enum pm_qos_req_action action, s32 val);
void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class,
s32 value);
void pm_qos_update_request(struct pm_qos_request *req,
s32 new_value);
void pm_qos_remove_request(struct pm_qos_request *req);
-int pm_qos_request(int pm_qos_class);
+s32 pm_qos_request(int pm_qos_class);
int pm_qos_request_active(struct pm_qos_request *req);
-s32 pm_qos_read_value(struct pm_qos_constraints *c);

#ifdef CONFIG_PM
enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask);
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index afac7010e0f2..7bb55aca03bb 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -235,11 +235,10 @@ static struct pm_qos_constraints cpu_latency_constraints = {
* This function returns the current target value.
-int pm_qos_request(int pm_qos_class)
+s32 pm_qos_request(int pm_qos_class)
return pm_qos_read_value(&cpu_latency_constraints);

int pm_qos_request_active(struct pm_qos_request *req)

 \ /
  Last update: 2020-02-12 00:40    [W:0.413 / U:1.748 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site