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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] irq cleanup
Make IRQ related data const or __read_mostly where possible/reasonable,
use platform_legacy_irq() where feasible, and remove the now unused
definition of vector_to_irq().
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
--- 2009-10-27.orig/xen/arch/ia64/linux-xen/iosapic.c 2009-06-05
11:59:48.000000000 +0200
+++ 2009-10-27/xen/arch/ia64/linux-xen/iosapic.c 2009-10-27
12:04:10.000000000 +0100
@@ -430,7 +430,7 @@ iosapic_end_level_irq (unsigned int irq)
#define iosapic_disable_level_irq mask_irq
#define iosapic_ack_level_irq nop
-struct hw_interrupt_type irq_type_iosapic_level = {
+static hw_irq_controller irq_type_iosapic_level = {
.typename = "IO-SAPIC-level",
.startup = iosapic_startup_level_irq,
.shutdown = iosapic_shutdown_level_irq,
@@ -476,7 +476,7 @@ iosapic_ack_edge_irq (unsigned int irq)
#define iosapic_disable_edge_irq nop
#define iosapic_end_edge_irq nop
-struct hw_interrupt_type irq_type_iosapic_edge = {
+static hw_irq_controller irq_type_iosapic_edge = {
.typename = "IO-SAPIC-edge",
.startup = iosapic_startup_edge_irq,
.shutdown = iosapic_disable_edge_irq,
@@ -605,7 +605,7 @@ register_intr (unsigned int gsi, int vec
unsigned long polarity, unsigned long trigger)
{
irq_desc_t *idesc;
- struct hw_interrupt_type *irq_type;
+ hw_irq_controller *irq_type;
int rte_index;
int index;
unsigned long gsi_base;
--- 2009-10-27.orig/xen/arch/ia64/linux-xen/irq_ia64.c 2009-03-31
17:55:50.000000000 +0200
+++ 2009-10-27/xen/arch/ia64/linux-xen/irq_ia64.c 2009-10-27
12:04:10.000000000 +0100
@@ -233,7 +233,7 @@ void ia64_process_pending_intr(void)
#ifdef CONFIG_SMP
extern irqreturn_t handle_IPI (int irq, void *dev_id, struct pt_regs *regs);
-static struct irqaction ipi_irqaction = {
+static struct irqaction __read_mostly ipi_irqaction = {
.handler = handle_IPI,
#ifndef XEN
.flags = SA_INTERRUPT,
--- 2009-10-27.orig/xen/arch/ia64/linux-xen/mca.c 2009-05-27
13:54:05.000000000 +0200
+++ 2009-10-27/xen/arch/ia64/linux-xen/mca.c 2009-10-27 12:04:10.000000000
+0100
@@ -1563,7 +1563,7 @@ ia64_mca_disable_cpe_polling(char *str)
__setup("disable_cpe_poll", ia64_mca_disable_cpe_polling);
-static struct irqaction cmci_irqaction = {
+static struct irqaction __read_mostly cmci_irqaction = {
.handler = ia64_mca_cmc_int_handler,
#ifndef XEN
.flags = SA_INTERRUPT,
@@ -1571,7 +1571,7 @@ static struct irqaction cmci_irqaction =
.name = "cmc_hndlr"
};
-static struct irqaction cmcp_irqaction = {
+static struct irqaction __read_mostly cmcp_irqaction = {
.handler = ia64_mca_cmc_int_caller,
#ifndef XEN
.flags = SA_INTERRUPT,
@@ -1579,7 +1579,7 @@ static struct irqaction cmcp_irqaction =
.name = "cmc_poll"
};
-static struct irqaction mca_rdzv_irqaction = {
+static struct irqaction __read_mostly mca_rdzv_irqaction = {
.handler = ia64_mca_rendez_int_handler,
#ifndef XEN
.flags = SA_INTERRUPT,
@@ -1587,7 +1587,7 @@ static struct irqaction mca_rdzv_irqacti
.name = "mca_rdzv"
};
-static struct irqaction mca_wkup_irqaction = {
+static struct irqaction __read_mostly mca_wkup_irqaction = {
.handler = ia64_mca_wakeup_int_handler,
#ifndef XEN
.flags = SA_INTERRUPT,
@@ -1596,7 +1596,7 @@ static struct irqaction mca_wkup_irqacti
};
#ifdef CONFIG_ACPI
-static struct irqaction mca_cpe_irqaction = {
+static struct irqaction __read_mostly mca_cpe_irqaction = {
.handler = ia64_mca_cpe_int_handler,
#ifndef XEN
.flags = SA_INTERRUPT,
@@ -1604,7 +1604,7 @@ static struct irqaction mca_cpe_irqactio
.name = "cpe_hndlr"
};
-static struct irqaction mca_cpep_irqaction = {
+static struct irqaction __read_mostly mca_cpep_irqaction = {
.handler = ia64_mca_cpe_int_caller,
#ifndef XEN
.flags = SA_INTERRUPT,
--- 2009-10-27.orig/xen/arch/ia64/linux-xen/perfmon.c 2009-07-15
16:34:16.000000000 +0200
+++ 2009-10-27/xen/arch/ia64/linux-xen/perfmon.c 2009-10-27
12:04:10.000000000 +0100
@@ -6811,7 +6811,7 @@ pfm_flush_pmds(struct task_struct *task,
#endif
}
-static struct irqaction perfmon_irqaction = {
+static struct irqaction __read_mostly perfmon_irqaction = {
.handler = pfm_interrupt_handler,
#ifndef XEN
.flags = SA_INTERRUPT,
--- 2009-10-27.orig/xen/arch/ia64/linux-xen/sn/kernel/irq.c 2008-10-24
11:21:38.000000000 +0200
+++ 2009-10-27/xen/arch/ia64/linux-xen/sn/kernel/irq.c 2009-10-27
12:04:10.000000000 +0100
@@ -221,7 +221,7 @@ static void sn_set_affinity_irq(unsigned
}
#endif
-struct hw_interrupt_type irq_type_sn = {
+static hw_irq_controller irq_type_sn = {
#ifndef XEN
.name = "SN hub",
#else
--- 2009-10-27.orig/xen/arch/ia64/linux/irq_lsapic.c 2005-11-17
15:51:03.000000000 +0100
+++ 2009-10-27/xen/arch/ia64/linux/irq_lsapic.c 2009-10-27 12:04:10.000000000
+0100
@@ -26,7 +26,7 @@ lsapic_noop (unsigned int irq)
/* nuthing to do... */
}
-struct hw_interrupt_type irq_type_ia64_lsapic = {
+hw_irq_controller irq_type_ia64_lsapic = {
.typename = "LSAPIC",
.startup = lsapic_noop_startup,
.shutdown = lsapic_noop,
--- 2009-10-27.orig/xen/arch/ia64/xen/irq.c 2009-08-24 08:41:26.000000000
+0200
+++ 2009-10-27/xen/arch/ia64/xen/irq.c 2009-10-27 12:04:10.000000000 +0100
@@ -118,7 +118,7 @@ static void ack_none(unsigned int irq)
#define shutdown_none disable_none
#define end_none enable_none
-struct hw_interrupt_type no_irq_type = {
+hw_irq_controller no_irq_type = {
"none",
startup_none,
shutdown_none,
--- 2009-10-27.orig/xen/arch/ia64/xen/xentime.c 2008-04-08 12:12:42.000000000
+0200
+++ 2009-10-27/xen/arch/ia64/xen/xentime.c 2009-10-27 12:04:10.000000000
+0100
@@ -154,7 +154,7 @@ xen_timer_interrupt (int irq, void *dev_
raise_softirq(TIMER_SOFTIRQ);
}
-static struct irqaction xen_timer_irqaction = {
+static struct irqaction __read_mostly xen_timer_irqaction = {
.handler = (void *) xen_timer_interrupt,
.name = "timer"
};
--- 2009-10-27.orig/xen/arch/x86/hpet.c 2009-10-26 14:42:47.000000000 +0100
+++ 2009-10-27/xen/arch/x86/hpet.c 2009-10-27 12:04:10.000000000 +0100
@@ -319,7 +319,7 @@ static void hpet_msi_set_affinity(unsign
/*
* IRQ Chip for MSI HPET Devices,
*/
-static struct hw_interrupt_type hpet_msi_type = {
+static hw_irq_controller hpet_msi_type = {
.typename = "HPET-MSI",
.startup = hpet_msi_startup,
.shutdown = hpet_msi_shutdown,
--- 2009-10-27.orig/xen/arch/x86/hvm/irq.c 2009-07-03 10:20:57.000000000
+0200
+++ 2009-10-27/xen/arch/x86/hvm/irq.c 2009-10-27 12:04:10.000000000 +0100
@@ -507,7 +507,7 @@ static int irq_load_isa(struct domain *d
/* Adjust the GSI assert counts for the ISA IRQ line state.
* This relies on the PCI IRQ state being loaded first. */
- for ( irq = 0; irq < 16; irq++ )
+ for ( irq = 0; platform_legacy_irq(irq); irq++ )
if ( test_bit(irq, &hvm_irq->isa_irq.i) )
hvm_irq->gsi_assert_count[hvm_isa_irq_to_gsi(irq)]++;
--- 2009-10-27.orig/xen/arch/x86/i8259.c 2009-10-07 13:31:36.000000000
+0200
+++ 2009-10-27/xen/arch/x86/i8259.c 2009-10-27 12:04:10.000000000 +0100
@@ -97,7 +97,7 @@ static void end_8259A_irq(unsigned int i
enable_8259A_irq(irq);
}
-static struct hw_interrupt_type i8259A_irq_type = {
+static struct hw_interrupt_type __read_mostly i8259A_irq_type = {
.typename = "XT-PIC",
.startup = startup_8259A_irq,
.shutdown = disable_8259A_irq,
@@ -347,7 +347,7 @@ void __devinit init_8259A(int auto_eoi)
spin_unlock_irqrestore(&i8259A_lock, flags);
}
-static struct irqaction cascade = { no_action, "cascade", NULL};
+static struct irqaction __read_mostly cascade = { no_action, "cascade", NULL};
void __init init_IRQ(void)
{
@@ -366,7 +366,7 @@ void __init init_IRQ(void)
set_intr_gate(vector, interrupt[vector]);
}
- for (irq = 0; irq < 16; irq++) {
+ for (irq = 0; platform_legacy_irq(irq); irq++) {
struct irq_desc *desc = irq_to_desc(irq);
struct irq_cfg *cfg = desc->chip_data;
--- 2009-10-27.orig/xen/arch/x86/io_apic.c 2009-10-26 14:42:47.000000000
+0100
+++ 2009-10-27/xen/arch/x86/io_apic.c 2009-10-27 12:05:25.000000000 +0100
@@ -62,7 +62,8 @@ int sis_apic_bug = -1;
/*
* # of IRQ routing registers
*/
-int nr_ioapic_registers[MAX_IO_APICS];
+int __read_mostly nr_ioapic_registers[MAX_IO_APICS];
+int __read_mostly nr_ioapics;
int disable_timer_pin_1 __initdata;
@@ -497,7 +498,7 @@ void /*__init*/ setup_ioapic_dest(void)
*/
static int EISA_ELCR(unsigned int irq)
{
- if (irq < 16) {
+ if (platform_legacy_irq(irq)) {
unsigned int port = 0x4d0 + (irq >> 3);
return (inb(port) >> (irq & 7)) & 1;
}
@@ -763,8 +764,8 @@ static inline int IO_APIC_irq_trigger(in
return 0;
}
-static struct hw_interrupt_type ioapic_level_type;
-static struct hw_interrupt_type ioapic_edge_type;
+static hw_irq_controller ioapic_level_type;
+static hw_irq_controller ioapic_edge_type;
#define IOAPIC_AUTO -1
#define IOAPIC_EDGE 0
@@ -844,7 +845,7 @@ static void __init setup_IO_APIC_irqs(vo
entry.vector = vector;
ioapic_register_intr(irq, IOAPIC_AUTO);
- if (!apic && (irq < 16))
+ if (!apic && platform_legacy_irq(irq))
disable_8259A_irq(irq);
}
cfg = irq_cfg(irq);
@@ -1358,7 +1359,7 @@ static unsigned int startup_edge_ioapic_
unsigned long flags;
spin_lock_irqsave(&ioapic_lock, flags);
- if (irq < 16) {
+ if (platform_legacy_irq(irq)) {
disable_8259A_irq(irq);
if (i8259A_irq_pending(irq))
was_pending = 1;
@@ -1408,7 +1409,7 @@ static unsigned int startup_level_ioapic
return 0; /* don't check for pending */
}
-int ioapic_ack_new = 1;
+int __read_mostly ioapic_ack_new = 1;
static void setup_ioapic_ack(char *s)
{
if ( !strcmp(s, "old") )
@@ -1572,7 +1573,7 @@ static void end_edge_ioapic_irq(unsigned
* edge-triggered handler, without risking IRQ storms and other ugly
* races.
*/
-static struct hw_interrupt_type ioapic_edge_type = {
+static hw_irq_controller ioapic_edge_type = {
.typename = "IO-APIC-edge",
.startup = startup_edge_ioapic_irq,
.shutdown = disable_edge_ioapic_irq,
@@ -1583,7 +1584,7 @@ static struct hw_interrupt_type ioapic_e
.set_affinity = set_ioapic_affinity_irq,
};
-static struct hw_interrupt_type ioapic_level_type = {
+static hw_irq_controller ioapic_level_type = {
.typename = "IO-APIC-level",
.startup = startup_level_ioapic_irq,
.shutdown = mask_IO_APIC_irq,
@@ -1631,7 +1632,7 @@ static void set_msi_affinity_irq(unsigne
* IRQ Chip for MSI PCI/PCI-X/PCI-Express Devices,
* which implement the MSI or MSI-X Capability Structure.
*/
-struct hw_interrupt_type pci_msi_type = {
+hw_irq_controller pci_msi_type = {
.typename = "PCI-MSI",
.startup = startup_msi_irq,
.shutdown = shutdown_msi_irq,
@@ -1646,7 +1647,7 @@ static inline void init_IO_APIC_traps(vo
{
int irq;
/* Xen: This is way simpler than the Linux implementation. */
- for (irq = 0; irq < 16 ; irq++)
+ for (irq = 0; platform_legacy_irq(irq); irq++)
if (IO_APIC_IRQ(irq) && !IO_APIC_VECTOR(irq))
make_8259A_irq(irq);
}
@@ -1674,7 +1675,7 @@ static void ack_lapic_irq(unsigned int i
static void end_lapic_irq(unsigned int irq) { /* nothing */ }
-static struct hw_interrupt_type lapic_irq_type = {
+static hw_irq_controller lapic_irq_type = {
.typename = "local-APIC-edge",
.startup = NULL, /* startup_irq() not used for IRQ0 */
.shutdown = NULL, /* shutdown_irq() not used for IRQ0 */
@@ -2107,7 +2108,7 @@ int io_apic_set_pci_routing (int ioapic,
/*
* IRQs < 16 are already in the irq_2_pin[] map
*/
- if (irq >= 16)
+ if (!platform_legacy_irq(irq))
add_pin_to_irq(irq, ioapic, pin);
vector = assign_irq_vector(irq);
@@ -2122,7 +2123,7 @@ int io_apic_set_pci_routing (int ioapic,
ioapic_register_intr(irq, edge_level);
- if (!ioapic && (irq < 16))
+ if (!ioapic && platform_legacy_irq(irq))
disable_8259A_irq(irq);
spin_lock_irqsave(&ioapic_lock, flags);
--- 2009-10-27.orig/xen/arch/x86/irq.c 2009-10-26 14:42:47.000000000 +0100
+++ 2009-10-27/xen/arch/x86/irq.c 2009-10-27 12:04:10.000000000 +0100
@@ -24,7 +24,7 @@
#include <public/physdev.h>
/* opt_noirqbalance: If true, software IRQ balancing/affinity is disabled. */
-int opt_noirqbalance = 0;
+int __read_mostly opt_noirqbalance = 0;
boolean_param("noirqbalance", opt_noirqbalance);
unsigned int __read_mostly nr_irqs_gsi = 16;
@@ -45,7 +45,7 @@ DECLARE_BITMAP(used_vectors, NR_VECTORS)
struct irq_cfg __read_mostly *irq_cfg = NULL;
-static struct timer *irq_guest_eoi_timer;
+static struct timer *__read_mostly irq_guest_eoi_timer;
static DEFINE_SPINLOCK(vector_lock);
@@ -60,7 +60,7 @@ static DEFINE_SPINLOCK(irq_ratelimit_loc
static struct timer irq_ratelimit_timer;
/* irq_ratelimit: the max irq rate allowed in every 10ms, set 0 to disable */
-unsigned int __read_mostly irq_ratelimit_threshold = 10000;
+static unsigned int __read_mostly irq_ratelimit_threshold = 10000;
integer_param("irq_ratelimit", irq_ratelimit_threshold);
/* Must be called when irq disabled */
@@ -321,7 +321,7 @@ static void ack_none(unsigned int irq)
#define shutdown_none disable_none
#define end_none enable_none
-struct hw_interrupt_type no_irq_type = {
+hw_irq_controller no_irq_type = {
"none",
startup_none,
shutdown_none,
--- 2009-10-27.orig/xen/arch/x86/mpparse.c 2009-09-03 08:55:14.000000000
+0200
+++ 2009-10-27/xen/arch/x86/mpparse.c 2009-10-27 12:04:10.000000000 +0100
@@ -58,8 +58,6 @@ struct mpc_config_intsrc mp_irqs[MAX_IRQ
/* MP IRQ source entries */
int mp_irq_entries;
-int nr_ioapics;
-
int pic_mode;
unsigned long mp_lapic_addr;
@@ -525,7 +523,7 @@ static void __init construct_default_ioi
}
}
- for (i = 0; i < 16; i++) {
+ for (i = 0; platform_legacy_irq(i); i++) {
switch (mpc_default_type) {
case 2:
if (i == 0 || i == 13)
@@ -1037,7 +1035,7 @@ void __init mp_config_acpi_legacy_irqs (
* Use the default configuration for the IRQs 0-15. Unless
* overriden by (MADT) interrupt source override entries.
*/
- for (i = 0; i < 16; i++) {
+ for (i = 0; platform_legacy_irq(i); i++) {
int idx;
for (idx = 0; idx < mp_irq_entries; idx++) {
--- 2009-10-27.orig/xen/arch/x86/time.c 2009-10-22 08:18:54.000000000 +0200
+++ 2009-10-27/xen/arch/x86/time.c 2009-10-27 12:04:10.000000000 +0100
@@ -232,7 +232,7 @@ static void timer_interrupt(int irq, voi
}
}
-static struct irqaction irq0 = { timer_interrupt, "timer", NULL };
+static struct irqaction __read_mostly irq0 = { timer_interrupt, "timer", NULL
};
/* ------ Calibrate the TSC -------
* Return processor ticks per second / CALIBRATE_FRAC.
--- 2009-10-27.orig/xen/common/domain.c 2009-10-22 08:18:54.000000000 +0200
+++ 2009-10-27/xen/common/domain.c 2009-10-27 12:04:10.000000000 +0100
@@ -198,7 +198,8 @@ struct vcpu *alloc_idle_vcpu(unsigned in
return alloc_vcpu(d, vcpu_id, cpu_id);
}
-static unsigned int extra_dom0_irqs = 256, extra_domU_irqs = 32;
+static unsigned int __read_mostly extra_dom0_irqs = 256;
+static unsigned int __read_mostly extra_domU_irqs = 32;
static void __init parse_extra_guest_irqs(const char *s)
{
if ( isdigit(*s) )
--- 2009-10-27.orig/xen/drivers/passthrough/amd/iommu_init.c 2009-10-01
10:53:02.000000000 +0200
+++ 2009-10-27/xen/drivers/passthrough/amd/iommu_init.c 2009-10-27
12:04:10.000000000 +0100
@@ -406,7 +406,7 @@ static void iommu_msi_end(unsigned int i
}
-static struct hw_interrupt_type iommu_msi_type = {
+static hw_irq_controller iommu_msi_type = {
.typename = "AMD_IOV_MSI",
.startup = iommu_msi_startup,
.shutdown = iommu_msi_mask,
--- 2009-10-27.orig/xen/drivers/passthrough/vtd/iommu.c 2009-10-22
08:18:54.000000000 +0200
+++ 2009-10-27/xen/drivers/passthrough/vtd/iommu.c 2009-10-27
12:04:10.000000000 +0100
@@ -871,7 +871,7 @@ static void dma_msi_set_affinity(unsigne
spin_unlock_irqrestore(&iommu->register_lock, flags);
}
-static struct hw_interrupt_type dma_msi_type = {
+static hw_irq_controller dma_msi_type = {
.typename = "DMA_MSI",
.startup = dma_msi_startup,
.shutdown = dma_msi_mask,
--- 2009-10-27.orig/xen/include/asm-ia64/linux-xen/asm/hw_irq.h 2009-03-31
17:55:50.000000000 +0200
+++ 2009-10-27/xen/include/asm-ia64/linux-xen/asm/hw_irq.h 2009-10-27
12:04:10.000000000 +0100
@@ -79,7 +79,7 @@ enum {
extern __u8 isa_irq_to_vector_map[16];
#define isa_irq_to_vector(x) isa_irq_to_vector_map[(x)]
-extern struct hw_interrupt_type irq_type_ia64_lsapic; /* CPU-internal
interrupt controller */
+extern hw_irq_controller irq_type_ia64_lsapic; /* CPU-internal interrupt
controller */
extern int assign_irq_vector (int irq); /* allocate a free vector */
extern void free_irq_vector (int vector);
@@ -91,7 +91,7 @@ extern int setup_vector(unsigned int vec
#endif
static inline void
-hw_resend_irq (struct hw_interrupt_type *h, unsigned int vector)
+hw_resend_irq (hw_irq_controller *h, unsigned int vector)
{
platform_send_ipi(smp_processor_id(), vector, IA64_IPI_DM_INT, 0);
}
--- 2009-10-27.orig/xen/include/asm-x86/irq.h 2009-10-26 14:42:47.000000000
+0100
+++ 2009-10-27/xen/include/asm-x86/irq.h 2009-10-27 12:04:10.000000000
+0100
@@ -10,8 +10,9 @@
#include <irq_vectors.h>
#include <asm/percpu.h>
-#define IO_APIC_IRQ(irq) (((irq) >= 16 && (irq) < nr_irqs_gsi) \
- || (((irq) < 16) && (1<<(irq)) & io_apic_irqs))
+#define IO_APIC_IRQ(irq) (platform_legacy_irq(irq) ? \
+ (1 << (irq)) & io_apic_irqs : \
+ (irq) < nr_irqs_gsi)
#define IO_APIC_VECTOR(irq) (irq_vector[irq])
#define MSI_IRQ(irq) ((irq) >= nr_irqs_gsi && (irq) < nr_irqs)
@@ -19,14 +20,12 @@
#define LEGACY_VECTOR(irq) ((irq) + FIRST_LEGACY_VECTOR)
#define LEGACY_IRQ_FROM_VECTOR(vec) ((vec) - FIRST_LEGACY_VECTOR)
-#define vector_to_irq(vec) (vector_irq[vec])
-#define irq_to_desc(irq) &irq_desc[(irq)]
+#define irq_to_desc(irq) (&irq_desc[irq])
+#define irq_cfg(irq) (&irq_cfg[irq])
#define MAX_GSI_IRQS PAGE_SIZE * 8
#define MAX_NR_IRQS (2 * MAX_GSI_IRQS)
-#define irq_cfg(irq) &irq_cfg[(irq)]
-
struct irq_cfg {
int vector;
cpumask_t domain;
--- 2009-10-27.orig/xen/include/asm-x86/msi.h 2009-10-01 10:53:02.000000000
+0200
+++ 2009-10-27/xen/include/asm-x86/msi.h 2009-10-27 12:04:10.000000000
+0100
@@ -117,7 +117,7 @@ int msi_free_irq(struct msi_desc *entry)
*/
#define NR_HP_RESERVED_VECTORS 20
-extern struct hw_interrupt_type pci_msi_type;
+extern const struct hw_interrupt_type pci_msi_type;
/*
* MSI-X Address Register
--- 2009-10-27.orig/xen/include/xen/irq.h 2009-10-26 14:42:47.000000000
+0100
+++ 2009-10-27/xen/include/xen/irq.h 2009-10-27 12:04:10.000000000 +0100
@@ -47,7 +47,7 @@ struct hw_interrupt_type {
void (*set_affinity)(unsigned int irq, cpumask_t mask);
};
-typedef struct hw_interrupt_type hw_irq_controller;
+typedef const struct hw_interrupt_type hw_irq_controller;
#include <asm/irq.h>
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