#else
struct dl_bw dl_bw;
#endif
+ /* This is the "average utilization" for this runqueue */
+ s64 avg_bw;
};
#ifdef CONFIG_SMP
#endif
#define ENQUEUE_REPLENISH 0x08
#define ENQUEUE_RESTORE 0x10
+#define ENQUEUE_WAKEUP_NEW 0x20
#define DEQUEUE_SLEEP 0x01
#define DEQUEUE_SAVE 0x02
}
#endif
+#ifdef CONFIG_SMP
+static inline unsigned long capacity_of(int cpu)
+{
+ return cpu_rq(cpu)->cpu_capacity;
+}
+
+static inline unsigned long capacity_orig_of(int cpu)
+{
+ return cpu_rq(cpu)->cpu_capacity_orig;
+}
+
+/*
+ * cpu_util returns the amount of capacity of a CPU that is used by CFS
+ * tasks. The unit of the return value must be the one of capacity so we can
+ * compare the utilization with the capacity of the CPU that is available for
+ * CFS task (ie cpu_capacity).
+ *
+ * cfs_rq.avg.util_avg is the sum of running time of runnable tasks plus the
+ * recent utilization of currently non-runnable tasks on a CPU. It represents
+ * the amount of utilization of a CPU in the range [0..capacity_orig] where
+ * capacity_orig is the cpu_capacity available at the highest frequency
+ * (arch_scale_freq_capacity()).
+ * The utilization of a CPU converges towards a sum equal to or less than the
+ * current capacity (capacity_curr <= capacity_orig) of the CPU because it is
+ * the running time on this CPU scaled by capacity_curr.
+ *
+ * Nevertheless, cfs_rq.avg.util_avg can be higher than capacity_curr or even
+ * higher than capacity_orig because of unfortunate rounding in
+ * cfs.avg.util_avg or just after migrating tasks and new task wakeups until
+ * the average stabilizes with the new running time. We need to check that the
+ * utilization stays within the range of [0..capacity_orig] and cap it if
+ * necessary. Without utilization capping, a group could be seen as overloaded
+ * (CPU0 utilization at 121% + CPU1 utilization at 80%) whereas CPU1 has 20% of
+ * available capacity. We allow utilization to overshoot capacity_curr (but not
+ * capacity_orig) as it useful for predicting the capacity required after task
+ * migrations (scheduler-driven DVFS).
+ */
+static inline unsigned long __cpu_util(int cpu, int delta)
+{
+ unsigned long util = cpu_rq(cpu)->cfs.avg.util_avg;
+ unsigned long capacity = capacity_orig_of(cpu);
+
+ delta += util;
+ if (delta < 0)
+ return 0;
+
+ return (delta >= capacity) ? capacity : delta;
+}
+
+static inline unsigned long cpu_util(int cpu)
+{
+ return __cpu_util(cpu, 0);
+}
+
+#endif
+
+#ifdef CONFIG_CPU_FREQ_GOV_SCHED
+#define capacity_max SCHED_CAPACITY_SCALE
+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));
- sched_avg_update(rq);
}
#else
static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta) { }
}
#endif /* CONFIG_64BIT */
#endif /* CONFIG_IRQ_TIME_ACCOUNTING */
+
+static inline void account_reset_rq(struct rq *rq)
+{
+#ifdef CONFIG_IRQ_TIME_ACCOUNTING
+ rq->prev_irq_time = 0;
+#endif
+#ifdef CONFIG_PARAVIRT
+ rq->prev_steal_time = 0;
+#endif
+#ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING
+ rq->prev_steal_time_rq = 0;
+#endif
+}