30 static void cpudl_heapify_down(struct cpudl *cp, int idx)  in cpudl_heapify_down()  argument
34 	int orig_cpu = cp->elements[idx].cpu;  in cpudl_heapify_down()
35 	u64 orig_dl = cp->elements[idx].dl;  in cpudl_heapify_down()
37 	if (left_child(idx) >= cp->size)  in cpudl_heapify_down()
49 		if ((l < cp->size) && dl_time_before(orig_dl,  in cpudl_heapify_down()
50 						cp->elements[l].dl)) {  in cpudl_heapify_down()
52 			largest_dl = cp->elements[l].dl;  in cpudl_heapify_down()
54 		if ((r < cp->size) && dl_time_before(largest_dl,  in cpudl_heapify_down()
55 						cp->elements[r].dl))  in cpudl_heapify_down()
62 		cp->elements[idx].cpu = cp->elements[largest].cpu;  in cpudl_heapify_down()
63 		cp->elements[idx].dl = cp->elements[largest].dl;  in cpudl_heapify_down()
64 		cp->elements[cp->elements[idx].cpu].idx = idx;  in cpudl_heapify_down()
68 	cp->elements[idx].cpu = orig_cpu;  in cpudl_heapify_down()
69 	cp->elements[idx].dl = orig_dl;  in cpudl_heapify_down()
70 	cp->elements[cp->elements[idx].cpu].idx = idx;  in cpudl_heapify_down()
73 static void cpudl_heapify_up(struct cpudl *cp, int idx)  in cpudl_heapify_up()  argument
77 	int orig_cpu = cp->elements[idx].cpu;  in cpudl_heapify_up()
78 	u64 orig_dl = cp->elements[idx].dl;  in cpudl_heapify_up()
85 		if (dl_time_before(orig_dl, cp->elements[p].dl))  in cpudl_heapify_up()
88 		cp->elements[idx].cpu = cp->elements[p].cpu;  in cpudl_heapify_up()
89 		cp->elements[idx].dl = cp->elements[p].dl;  in cpudl_heapify_up()
90 		cp->elements[cp->elements[idx].cpu].idx = idx;  in cpudl_heapify_up()
94 	cp->elements[idx].cpu = orig_cpu;  in cpudl_heapify_up()
95 	cp->elements[idx].dl = orig_dl;  in cpudl_heapify_up()
96 	cp->elements[cp->elements[idx].cpu].idx = idx;  in cpudl_heapify_up()
99 static void cpudl_heapify(struct cpudl *cp, int idx)  in cpudl_heapify()  argument
101 	if (idx > 0 && dl_time_before(cp->elements[parent(idx)].dl,  in cpudl_heapify()
102 				cp->elements[idx].dl))  in cpudl_heapify()
103 		cpudl_heapify_up(cp, idx);  in cpudl_heapify()
105 		cpudl_heapify_down(cp, idx);  in cpudl_heapify()
108 static inline int cpudl_maximum(struct cpudl *cp)  in cpudl_maximum()  argument
110 	return cp->elements[0].cpu;  in cpudl_maximum()
121 int cpudl_find(struct cpudl *cp, struct task_struct *p,  in cpudl_find()  argument
127 	    cpumask_and(later_mask, cp->free_cpus, &p->cpus_allowed)) {  in cpudl_find()
130 		int best_cpu = cpudl_maximum(cp);  in cpudl_find()
135 		    dl_time_before(dl_se->deadline, cp->elements[0].dl)) {  in cpudl_find()
154 void cpudl_clear(struct cpudl *cp, int cpu)  in cpudl_clear()  argument
161 	raw_spin_lock_irqsave(&cp->lock, flags);  in cpudl_clear()
163 	old_idx = cp->elements[cpu].idx;  in cpudl_clear()
171 		new_cpu = cp->elements[cp->size - 1].cpu;  in cpudl_clear()
172 		cp->elements[old_idx].dl = cp->elements[cp->size - 1].dl;  in cpudl_clear()
173 		cp->elements[old_idx].cpu = new_cpu;  in cpudl_clear()
174 		cp->size--;  in cpudl_clear()
175 		cp->elements[new_cpu].idx = old_idx;  in cpudl_clear()
176 		cp->elements[cpu].idx = IDX_INVALID;  in cpudl_clear()
177 		cpudl_heapify(cp, old_idx);  in cpudl_clear()
179 		cpumask_set_cpu(cpu, cp->free_cpus);  in cpudl_clear()
181 	raw_spin_unlock_irqrestore(&cp->lock, flags);  in cpudl_clear()
194 void cpudl_set(struct cpudl *cp, int cpu, u64 dl)  in cpudl_set()  argument
201 	raw_spin_lock_irqsave(&cp->lock, flags);  in cpudl_set()
203 	old_idx = cp->elements[cpu].idx;  in cpudl_set()
205 		int new_idx = cp->size++;  in cpudl_set()
207 		cp->elements[new_idx].dl = dl;  in cpudl_set()
208 		cp->elements[new_idx].cpu = cpu;  in cpudl_set()
209 		cp->elements[cpu].idx = new_idx;  in cpudl_set()
210 		cpudl_heapify_up(cp, new_idx);  in cpudl_set()
211 		cpumask_clear_cpu(cpu, cp->free_cpus);  in cpudl_set()
213 		cp->elements[old_idx].dl = dl;  in cpudl_set()
214 		cpudl_heapify(cp, old_idx);  in cpudl_set()
217 	raw_spin_unlock_irqrestore(&cp->lock, flags);  in cpudl_set()
225 void cpudl_set_freecpu(struct cpudl *cp, int cpu)  in cpudl_set_freecpu()  argument
227 	cpumask_set_cpu(cpu, cp->free_cpus);  in cpudl_set_freecpu()
235 void cpudl_clear_freecpu(struct cpudl *cp, int cpu)  in cpudl_clear_freecpu()  argument
237 	cpumask_clear_cpu(cpu, cp->free_cpus);  in cpudl_clear_freecpu()
244 int cpudl_init(struct cpudl *cp)  in cpudl_init()  argument
248 	raw_spin_lock_init(&cp->lock);  in cpudl_init()
249 	cp->size = 0;  in cpudl_init()
251 	cp->elements = kcalloc(nr_cpu_ids,  in cpudl_init()
254 	if (!cp->elements)  in cpudl_init()
257 	if (!zalloc_cpumask_var(&cp->free_cpus, GFP_KERNEL)) {  in cpudl_init()
258 		kfree(cp->elements);  in cpudl_init()
263 		cp->elements[i].idx = IDX_INVALID;  in cpudl_init()
272 void cpudl_cleanup(struct cpudl *cp)  in cpudl_cleanup()  argument
274 	free_cpumask_var(cp->free_cpus);  in cpudl_cleanup()
275 	kfree(cp->elements);  in cpudl_cleanup()