xen: dynamically allocate irq & event structures (b21ddbf5) · Commits · 戴 / test

drivers/xen/events.c

+10 −6

Original line number	Diff line number	Diff line
		@@ -28,6 +28,7 @@
		#include <linux/string.h>
		#include <linux/bootmem.h>
		#include <linux/slab.h>
		#include <linux/irqnr.h>

		#include <asm/desc.h>
		#include <asm/ptrace.h>
		@@ -97,11 +98,9 @@ struct irq_info
		};
		#define PIRQ_NEEDS_EOI (1 << 0)

		static struct irq_info irq_info[NR_IRQS];
		static struct irq_info *irq_info;

		static int evtchn_to_irq[NR_EVENT_CHANNELS] = {
		[0 ... NR_EVENT_CHANNELS-1] = -1
		};
		static int *evtchn_to_irq;
		struct cpu_evtchn_s {
		unsigned long bits[NR_EVENT_CHANNELS/BITS_PER_LONG];
		};
		@@ -527,7 +526,7 @@ static int find_irq_by_gsi(unsigned gsi)
		{
		int irq;

		for (irq = 0; irq < NR_IRQS; irq++) {
		for (irq = 0; irq < nr_irqs; irq++) {
		struct irq_info *info = info_for_irq(irq);

		if (info == NULL \|\| info->type != IRQT_PIRQ)
		@@ -1267,7 +1266,12 @@ void __init xen_init_IRQ(void)

		cpu_evtchn_mask_p = kcalloc(nr_cpu_ids, sizeof(struct cpu_evtchn_s),
		GFP_KERNEL);
		BUG_ON(cpu_evtchn_mask_p == NULL);
		irq_info = kcalloc(nr_irqs, sizeof(*irq_info), GFP_KERNEL);

		evtchn_to_irq = kcalloc(NR_EVENT_CHANNELS, sizeof(*evtchn_to_irq),
		GFP_KERNEL);
		for (i = 0; i < NR_EVENT_CHANNELS; i++)
		evtchn_to_irq[i] = -1;

		init_evtchn_cpu_bindings();