3 #include <linux/cpu.h>
33 void xen_smp_intr_free(unsigned int cpu)  in xen_smp_intr_free()  argument
35 	kfree(per_cpu(xen_resched_irq, cpu).name);  in xen_smp_intr_free()
36 	per_cpu(xen_resched_irq, cpu).name = NULL;  in xen_smp_intr_free()
37 	if (per_cpu(xen_resched_irq, cpu).irq >= 0) {  in xen_smp_intr_free()
38 		unbind_from_irqhandler(per_cpu(xen_resched_irq, cpu).irq, NULL);  in xen_smp_intr_free()
39 		per_cpu(xen_resched_irq, cpu).irq = -1;  in xen_smp_intr_free()
41 	kfree(per_cpu(xen_callfunc_irq, cpu).name);  in xen_smp_intr_free()
42 	per_cpu(xen_callfunc_irq, cpu).name = NULL;  in xen_smp_intr_free()
43 	if (per_cpu(xen_callfunc_irq, cpu).irq >= 0) {  in xen_smp_intr_free()
44 		unbind_from_irqhandler(per_cpu(xen_callfunc_irq, cpu).irq, NULL);  in xen_smp_intr_free()
45 		per_cpu(xen_callfunc_irq, cpu).irq = -1;  in xen_smp_intr_free()
47 	kfree(per_cpu(xen_debug_irq, cpu).name);  in xen_smp_intr_free()
48 	per_cpu(xen_debug_irq, cpu).name = NULL;  in xen_smp_intr_free()
49 	if (per_cpu(xen_debug_irq, cpu).irq >= 0) {  in xen_smp_intr_free()
50 		unbind_from_irqhandler(per_cpu(xen_debug_irq, cpu).irq, NULL);  in xen_smp_intr_free()
51 		per_cpu(xen_debug_irq, cpu).irq = -1;  in xen_smp_intr_free()
53 	kfree(per_cpu(xen_callfuncsingle_irq, cpu).name);  in xen_smp_intr_free()
54 	per_cpu(xen_callfuncsingle_irq, cpu).name = NULL;  in xen_smp_intr_free()
55 	if (per_cpu(xen_callfuncsingle_irq, cpu).irq >= 0) {  in xen_smp_intr_free()
56 		unbind_from_irqhandler(per_cpu(xen_callfuncsingle_irq, cpu).irq,  in xen_smp_intr_free()
58 		per_cpu(xen_callfuncsingle_irq, cpu).irq = -1;  in xen_smp_intr_free()
62 int xen_smp_intr_init(unsigned int cpu)  in xen_smp_intr_init()  argument
67 	resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu);  in xen_smp_intr_init()
68 	per_cpu(xen_resched_irq, cpu).name = resched_name;  in xen_smp_intr_init()
70 				    cpu,  in xen_smp_intr_init()
77 	per_cpu(xen_resched_irq, cpu).irq = rc;  in xen_smp_intr_init()
79 	callfunc_name = kasprintf(GFP_KERNEL, "callfunc%d", cpu);  in xen_smp_intr_init()
80 	per_cpu(xen_callfunc_irq, cpu).name = callfunc_name;  in xen_smp_intr_init()
82 				    cpu,  in xen_smp_intr_init()
89 	per_cpu(xen_callfunc_irq, cpu).irq = rc;  in xen_smp_intr_init()
92 		debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu);  in xen_smp_intr_init()
93 		per_cpu(xen_debug_irq, cpu).name = debug_name;  in xen_smp_intr_init()
94 		rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu,  in xen_smp_intr_init()
100 		per_cpu(xen_debug_irq, cpu).irq = rc;  in xen_smp_intr_init()
103 	callfunc_name = kasprintf(GFP_KERNEL, "callfuncsingle%d", cpu);  in xen_smp_intr_init()
104 	per_cpu(xen_callfuncsingle_irq, cpu).name = callfunc_name;  in xen_smp_intr_init()
106 				    cpu,  in xen_smp_intr_init()
113 	per_cpu(xen_callfuncsingle_irq, cpu).irq = rc;  in xen_smp_intr_init()
118 	xen_smp_intr_free(cpu);  in xen_smp_intr_init()
124 	int cpu, rc, count = 0;  in xen_smp_cpus_done()  local
134 	for_each_online_cpu(cpu) {  in xen_smp_cpus_done()
135 		if (xen_vcpu_nr(cpu) < MAX_VIRT_CPUS)  in xen_smp_cpus_done()
138 		rc = remove_cpu(cpu);  in xen_smp_cpus_done()
142 			 * Reset vcpu_info so this cpu cannot be onlined again.  in xen_smp_cpus_done()
144 			xen_vcpu_info_reset(cpu);  in xen_smp_cpus_done()
147 			pr_warn("%s: failed to bring CPU %d down, error %d\n",  in xen_smp_cpus_done()
148 				__func__, cpu, rc);  in xen_smp_cpus_done()
154 void xen_smp_send_reschedule(int cpu)  in xen_smp_send_reschedule()  argument
156 	xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);  in xen_smp_send_reschedule()
162 	unsigned cpu;  in __xen_send_IPI_mask()  local
164 	for_each_cpu_and(cpu, mask, cpu_online_mask)  in __xen_send_IPI_mask()
165 		xen_send_IPI_one(cpu, vector);  in __xen_send_IPI_mask()
170 	int cpu;  in xen_smp_send_call_function_ipi()  local
175 	for_each_cpu(cpu, mask) {  in xen_smp_send_call_function_ipi()
176 		if (xen_vcpu_stolen(cpu)) {  in xen_smp_send_call_function_ipi()
183 void xen_smp_send_call_function_single_ipi(int cpu)  in xen_smp_send_call_function_single_ipi()  argument
185 	__xen_send_IPI_mask(cpumask_of(cpu),  in xen_smp_send_call_function_single_ipi()
249 	unsigned cpu;  in xen_send_IPI_mask_allbutself()  local
256 	for_each_cpu_and(cpu, mask, cpu_online_mask) {  in xen_send_IPI_mask_allbutself()
257 		if (this_cpu == cpu)  in xen_send_IPI_mask_allbutself()
260 		xen_send_IPI_one(cpu, xen_vector);  in xen_send_IPI_mask_allbutself()