kernel/irq/ipi.c

6  * This file contains driver APIs to the IPI subsystem.
9 #define pr_fmt(fmt) "genirq/ipi: " fmt
15  * irq_reserve_ipi() - Setup an IPI to destination cpumask
16  * @domain:	IPI domain
17  * @dest:	cpumask of CPUs which can receive the IPI
19  * Allocate a virq that can be used to send IPI to any CPU in dest mask.
31 		pr_warn("Reservation on a non IPI domain\n");  in irq_reserve_ipi()
59 		 * The IPI requires a separate HW irq on each CPU. We require  in irq_reserve_ipi()
62 		 * several IPI ranges.  in irq_reserve_ipi()
80 		pr_warn("Can't reserve IPI, failed to alloc descs\n");  in irq_reserve_ipi()
88 		pr_warn("Can't reserve IPI, failed to alloc hw irqs\n");  in irq_reserve_ipi()
106  * irq_destroy_ipi() - unreserve an IPI that was previously allocated
108  * @dest:	cpumask of CPUs which should have the IPI removed
130 		pr_warn("Trying to destroy a non IPI domain!\n");  in irq_destroy_ipi()
137 		 * Must be destroying a subset of CPUs to which this IPI  in irq_destroy_ipi()
154  * ipi_get_hwirq - Get the hwirq associated with an IPI to a CPU
158  * When dealing with coprocessors IPI, we need to inform the coprocessor of
178 	 * a single hardware irq for all cpus then the IPI send mechanism  in ipi_get_hwirq()
217  * __ipi_send_single - send an IPI to a target Linux SMP CPU
222  * This function is for architecture or core code to speed up IPI sending. Not
259  * __ipi_send_mask - send an IPI to target Linux SMP CPU(s)
264  * This function is for architecture or core code to speed up IPI sending. Not
306  * ipi_send_single - Send an IPI to a single CPU
327  * ipi_send_mask - Send an IPI to target CPU(s)