26 static void cpudl_heapify_down(struct cpudl *cp, int idx)  in cpudl_heapify_down()  argument
30 	int orig_cpu = cp->elements[idx].cpu;  in cpudl_heapify_down()
31 	u64 orig_dl = cp->elements[idx].dl;  in cpudl_heapify_down()
33 	if (left_child(idx) >= cp->size)  in cpudl_heapify_down()
45 		if ((l < cp->size) && dl_time_before(orig_dl,  in cpudl_heapify_down()
46 						cp->elements[l].dl)) {  in cpudl_heapify_down()
48 			largest_dl = cp->elements[l].dl;  in cpudl_heapify_down()
50 		if ((r < cp->size) && dl_time_before(largest_dl,  in cpudl_heapify_down()
51 						cp->elements[r].dl))  in cpudl_heapify_down()
58 		cp->elements[idx].cpu = cp->elements[largest].cpu;  in cpudl_heapify_down()
59 		cp->elements[idx].dl = cp->elements[largest].dl;  in cpudl_heapify_down()
60 		cp->elements[cp->elements[idx].cpu].idx = idx;  in cpudl_heapify_down()
64 	cp->elements[idx].cpu = orig_cpu;  in cpudl_heapify_down()
65 	cp->elements[idx].dl = orig_dl;  in cpudl_heapify_down()
66 	cp->elements[cp->elements[idx].cpu].idx = idx;  in cpudl_heapify_down()
69 static void cpudl_heapify_up(struct cpudl *cp, int idx)  in cpudl_heapify_up()  argument
73 	int orig_cpu = cp->elements[idx].cpu;  in cpudl_heapify_up()
74 	u64 orig_dl = cp->elements[idx].dl;  in cpudl_heapify_up()
81 		if (dl_time_before(orig_dl, cp->elements[p].dl))  in cpudl_heapify_up()
84 		cp->elements[idx].cpu = cp->elements[p].cpu;  in cpudl_heapify_up()
85 		cp->elements[idx].dl = cp->elements[p].dl;  in cpudl_heapify_up()
86 		cp->elements[cp->elements[idx].cpu].idx = idx;  in cpudl_heapify_up()
90 	cp->elements[idx].cpu = orig_cpu;  in cpudl_heapify_up()
91 	cp->elements[idx].dl = orig_dl;  in cpudl_heapify_up()
92 	cp->elements[cp->elements[idx].cpu].idx = idx;  in cpudl_heapify_up()
95 static void cpudl_heapify(struct cpudl *cp, int idx)  in cpudl_heapify()  argument
97 	if (idx > 0 && dl_time_before(cp->elements[parent(idx)].dl,  in cpudl_heapify()
98 				cp->elements[idx].dl))  in cpudl_heapify()
99 		cpudl_heapify_up(cp, idx);  in cpudl_heapify()
101 		cpudl_heapify_down(cp, idx);  in cpudl_heapify()
104 static inline int cpudl_maximum(struct cpudl *cp)  in cpudl_maximum()  argument
106 	return cp->elements[0].cpu;  in cpudl_maximum()
111  * @cp: the cpudl max-heap context
117 int cpudl_find(struct cpudl *cp, struct task_struct *p,  in cpudl_find()  argument
123 	    cpumask_and(later_mask, cp->free_cpus, p->cpus_ptr)) {  in cpudl_find()
150 		int best_cpu = cpudl_maximum(cp);  in cpudl_find()
155 		    dl_time_before(dl_se->deadline, cp->elements[0].dl)) {  in cpudl_find()
167  * @cp: the cpudl max-heap context
174 void cpudl_clear(struct cpudl *cp, int cpu)  in cpudl_clear()  argument
181 	raw_spin_lock_irqsave(&cp->lock, flags);  in cpudl_clear()
183 	old_idx = cp->elements[cpu].idx;  in cpudl_clear()
191 		new_cpu = cp->elements[cp->size - 1].cpu;  in cpudl_clear()
192 		cp->elements[old_idx].dl = cp->elements[cp->size - 1].dl;  in cpudl_clear()
193 		cp->elements[old_idx].cpu = new_cpu;  in cpudl_clear()
194 		cp->size--;  in cpudl_clear()
195 		cp->elements[new_cpu].idx = old_idx;  in cpudl_clear()
196 		cp->elements[cpu].idx = IDX_INVALID;  in cpudl_clear()
197 		cpudl_heapify(cp, old_idx);  in cpudl_clear()
199 		cpumask_set_cpu(cpu, cp->free_cpus);  in cpudl_clear()
201 	raw_spin_unlock_irqrestore(&cp->lock, flags);  in cpudl_clear()
206  * @cp: the cpudl max-heap context
214 void cpudl_set(struct cpudl *cp, int cpu, u64 dl)  in cpudl_set()  argument
221 	raw_spin_lock_irqsave(&cp->lock, flags);  in cpudl_set()
223 	old_idx = cp->elements[cpu].idx;  in cpudl_set()
225 		int new_idx = cp->size++;  in cpudl_set()
227 		cp->elements[new_idx].dl = dl;  in cpudl_set()
228 		cp->elements[new_idx].cpu = cpu;  in cpudl_set()
229 		cp->elements[cpu].idx = new_idx;  in cpudl_set()
230 		cpudl_heapify_up(cp, new_idx);  in cpudl_set()
231 		cpumask_clear_cpu(cpu, cp->free_cpus);  in cpudl_set()
233 		cp->elements[old_idx].dl = dl;  in cpudl_set()
234 		cpudl_heapify(cp, old_idx);  in cpudl_set()
237 	raw_spin_unlock_irqrestore(&cp->lock, flags);  in cpudl_set()
242  * @cp: the cpudl max-heap context
245 void cpudl_set_freecpu(struct cpudl *cp, int cpu)  in cpudl_set_freecpu()  argument
247 	cpumask_set_cpu(cpu, cp->free_cpus);  in cpudl_set_freecpu()
252  * @cp: the cpudl max-heap context
255 void cpudl_clear_freecpu(struct cpudl *cp, int cpu)  in cpudl_clear_freecpu()  argument
257 	cpumask_clear_cpu(cpu, cp->free_cpus);  in cpudl_clear_freecpu()
262  * @cp: the cpudl max-heap context
264 int cpudl_init(struct cpudl *cp)  in cpudl_init()  argument
268 	raw_spin_lock_init(&cp->lock);  in cpudl_init()
269 	cp->size = 0;  in cpudl_init()
271 	cp->elements = kcalloc(nr_cpu_ids,  in cpudl_init()
274 	if (!cp->elements)  in cpudl_init()
277 	if (!zalloc_cpumask_var(&cp->free_cpus, GFP_KERNEL)) {  in cpudl_init()
278 		kfree(cp->elements);  in cpudl_init()
283 		cp->elements[i].idx = IDX_INVALID;  in cpudl_init()
290  * @cp: the cpudl max-heap context
292 void cpudl_cleanup(struct cpudl *cp)  in cpudl_cleanup()  argument
294 	free_cpumask_var(cp->free_cpus);  in cpudl_cleanup()
295 	kfree(cp->elements);  in cpudl_cleanup()