From 27451c907aec99e6f986952f57cfdd1db4a68748 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Wed, 12 Feb 2020 00:07:42 +0100
Subject: PM: QoS: Add CPU latency QoS API wrappers
Git-commit: fa048c59bf1ba13d8fe61890495577073a0ea919
Patch-mainline: v5.7-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

Introduce (temporary) wrappers around pm_qos_request(),
pm_qos_request_active() and pm_qos_add/update/remove_request() to
provide replacements for them with function signatures that will be
used in the final CPU latency QoS API, so that the users of it can be
switched over to the new arrangement one by one before the API is
finally set.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 include/linux/pm_qos.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index 19eafca5680e..f92cc7b1b831 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -159,6 +159,33 @@ int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier);
 int pm_qos_request_active(struct pm_qos_request *req);
 s32 pm_qos_read_value(struct pm_qos_constraints *c);
 
+static inline void cpu_latency_qos_add_request(struct pm_qos_request *req,
+					       s32 value)
+{
+	pm_qos_add_request(req, PM_QOS_CPU_DMA_LATENCY, value);
+}
+
+static inline void cpu_latency_qos_update_request(struct pm_qos_request *req,
+						  s32 new_value)
+{
+	pm_qos_update_request(req, new_value);
+}
+
+static inline void cpu_latency_qos_remove_request(struct pm_qos_request *req)
+{
+	pm_qos_remove_request(req);
+}
+
+static inline bool cpu_latency_qos_request_active(struct pm_qos_request *req)
+{
+	return pm_qos_request_active(req);
+}
+
+static inline s32 cpu_latency_qos_limit(void)
+{
+	return pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
+}
+
 #ifdef CONFIG_PM
 enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask);
 enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask);
-- 
2.28.0