sched: scheduler-driven cpu frequency selection

[firefly-linux-kernel-4.4.55.git] / kernel / sched / sched.h

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index fcbb3e07accc4e45556f8005a679914b961b9ba3..ac28024b2d7a4129bef689880994e793ce2070a9 100644 (file)
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1455,6 +1455,57 @@ unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu)
 }
 #endif
 
+#ifdef CONFIG_CPU_FREQ_GOV_SCHED
+extern unsigned int capacity_margin;
+extern struct static_key __sched_freq;
+
+static inline bool sched_freq(void)
+{
+       return static_key_false(&__sched_freq);
+}
+
+DECLARE_PER_CPU(struct sched_capacity_reqs, cpu_sched_capacity_reqs);
+void update_cpu_capacity_request(int cpu, bool request);
+
+static inline void set_cfs_cpu_capacity(int cpu, bool request,
+                                       unsigned long capacity)
+{
+       if (per_cpu(cpu_sched_capacity_reqs, cpu).cfs != capacity) {
+               per_cpu(cpu_sched_capacity_reqs, cpu).cfs = capacity;
+               update_cpu_capacity_request(cpu, request);
+       }
+}
+
+static inline void set_rt_cpu_capacity(int cpu, bool request,
+                                      unsigned long capacity)
+{
+       if (per_cpu(cpu_sched_capacity_reqs, cpu).rt != capacity) {
+               per_cpu(cpu_sched_capacity_reqs, cpu).rt = capacity;
+               update_cpu_capacity_request(cpu, request);
+       }
+}
+
+static inline void set_dl_cpu_capacity(int cpu, bool request,
+                                      unsigned long capacity)
+{
+       if (per_cpu(cpu_sched_capacity_reqs, cpu).dl != capacity) {
+               per_cpu(cpu_sched_capacity_reqs, cpu).dl = capacity;
+               update_cpu_capacity_request(cpu, request);
+       }
+}
+#else
+static inline bool sched_freq(void) { return false; }
+static inline void set_cfs_cpu_capacity(int cpu, bool request,
+                                       unsigned long capacity)
+{ }
+static inline void set_rt_cpu_capacity(int cpu, bool request,
+                                      unsigned long capacity)
+{ }
+static inline void set_dl_cpu_capacity(int cpu, bool request,
+                                      unsigned long capacity)
+{ }
+#endif
+
 static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta)
 {
        rq->rt_avg += rt_delta * arch_scale_freq_capacity(NULL, cpu_of(rq));