From 85c0f90978bf50596dbd23854648020f1f9b5bfd Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Tue, 19 Aug 2008 20:49:47 -0700 Subject: irq: introduce nr_irqs at this point nr_irqs is equal NR_IRQS convert a few easy users from NR_IRQS to dynamic nr_irqs. v2: according to Eric, we need to take care of arch without generic_hardirqs Signed-off-by: Yinghai Lu Signed-off-by: Ingo Molnar --- arch/m68k/kernel/ints.c | 2 ++ arch/s390/kernel/irq.c | 2 ++ arch/sparc/kernel/irq.c | 3 +++ include/linux/interrupt.h | 2 ++ kernel/irq/autoprobe.c | 10 +++++----- kernel/irq/chip.c | 20 ++++++++++---------- kernel/irq/handle.c | 3 ++- kernel/irq/manage.c | 16 ++++++++-------- kernel/irq/proc.c | 2 +- kernel/irq/resend.c | 4 ++-- kernel/irq/spurious.c | 4 ++-- 11 files changed, 39 insertions(+), 29 deletions(-) diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c index 7e8a0d394e6..74453d15692 100644 --- a/arch/m68k/kernel/ints.c +++ b/arch/m68k/kernel/ints.c @@ -46,6 +46,8 @@ #include #endif +int nr_irqs = NR_IRQS; + extern u32 auto_irqhandler_fixup[]; extern u32 user_irqhandler_fixup[]; extern u16 user_irqvec_fixup[]; diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index e7c5bfb7c75..14eb5496c8a 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -17,6 +17,8 @@ #include #include +int nr_irqs = NR_IRQS; + /* * show_interrupts is needed by /proc/interrupts. */ diff --git a/arch/sparc/kernel/irq.c b/arch/sparc/kernel/irq.c index 93e1d1c6529..059598b7e0f 100644 --- a/arch/sparc/kernel/irq.c +++ b/arch/sparc/kernel/irq.c @@ -55,6 +55,9 @@ #define SMP_NOP2 #define SMP_NOP3 #endif /* SMP */ + +int nr_irqs = NR_IRQS; + unsigned long __raw_local_irq_save(void) { unsigned long retval; diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 58ff4e74b2f..511803853a5 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -15,6 +15,8 @@ #include #include +extern int nr_irqs; + /* * These correspond to the IORESOURCE_IRQ_* defines in * linux/ioport.h to select the interrupt line behaviour. When diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c index 533068cfb60..c689e9851a8 100644 --- a/kernel/irq/autoprobe.c +++ b/kernel/irq/autoprobe.c @@ -38,7 +38,7 @@ unsigned long probe_irq_on(void) * something may have generated an irq long ago and we want to * flush such a longstanding irq before considering it as spurious. */ - for (i = NR_IRQS-1; i > 0; i--) { + for (i = nr_irqs-1; i > 0; i--) { desc = irq_desc + i; spin_lock_irq(&desc->lock); @@ -68,7 +68,7 @@ unsigned long probe_irq_on(void) * (we must startup again here because if a longstanding irq * happened in the previous stage, it may have masked itself) */ - for (i = NR_IRQS-1; i > 0; i--) { + for (i = nr_irqs-1; i > 0; i--) { desc = irq_desc + i; spin_lock_irq(&desc->lock); @@ -89,7 +89,7 @@ unsigned long probe_irq_on(void) * Now filter out any obviously spurious interrupts */ mask = 0; - for (i = 0; i < NR_IRQS; i++) { + for (i = 0; i < nr_irqs; i++) { unsigned int status; desc = irq_desc + i; @@ -130,7 +130,7 @@ unsigned int probe_irq_mask(unsigned long val) int i; mask = 0; - for (i = 0; i < NR_IRQS; i++) { + for (i = 0; i < nr_irqs; i++) { struct irq_desc *desc = irq_desc + i; unsigned int status; @@ -173,7 +173,7 @@ int probe_irq_off(unsigned long val) { int i, irq_found = 0, nr_irqs = 0; - for (i = 0; i < NR_IRQS; i++) { + for (i = 0; i < nr_irqs; i++) { struct irq_desc *desc = irq_desc + i; unsigned int status; diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 5203a599d21..bba66e09870 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -27,7 +27,7 @@ void dynamic_irq_init(unsigned int irq) struct irq_desc *desc; unsigned long flags; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { WARN(1, KERN_ERR "Trying to initialize invalid IRQ%d\n", irq); return; } @@ -60,7 +60,7 @@ void dynamic_irq_cleanup(unsigned int irq) struct irq_desc *desc; unsigned long flags; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { WARN(1, KERN_ERR "Trying to cleanup invalid IRQ%d\n", irq); return; } @@ -92,7 +92,7 @@ int set_irq_chip(unsigned int irq, struct irq_chip *chip) struct irq_desc *desc; unsigned long flags; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { WARN(1, KERN_ERR "Trying to install chip for IRQ%d\n", irq); return -EINVAL; } @@ -121,7 +121,7 @@ int set_irq_type(unsigned int irq, unsigned int type) unsigned long flags; int ret = -ENXIO; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { printk(KERN_ERR "Trying to set irq type for IRQ%d\n", irq); return -ENODEV; } @@ -149,7 +149,7 @@ int set_irq_data(unsigned int irq, void *data) struct irq_desc *desc; unsigned long flags; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { printk(KERN_ERR "Trying to install controller data for IRQ%d\n", irq); return -EINVAL; @@ -175,7 +175,7 @@ int set_irq_msi(unsigned int irq, struct msi_desc *entry) struct irq_desc *desc; unsigned long flags; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { printk(KERN_ERR "Trying to install msi data for IRQ%d\n", irq); return -EINVAL; @@ -201,7 +201,7 @@ int set_irq_chip_data(unsigned int irq, void *data) struct irq_desc *desc = irq_desc + irq; unsigned long flags; - if (irq >= NR_IRQS || !desc->chip) { + if (irq >= nr_irqs || !desc->chip) { printk(KERN_ERR "BUG: bad set_irq_chip_data(IRQ#%d)\n", irq); return -EINVAL; } @@ -545,7 +545,7 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, struct irq_desc *desc; unsigned long flags; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { printk(KERN_ERR "Trying to install type control for IRQ%d\n", irq); return; @@ -610,7 +610,7 @@ void __init set_irq_noprobe(unsigned int irq) struct irq_desc *desc; unsigned long flags; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { printk(KERN_ERR "Trying to mark IRQ%d non-probeable\n", irq); return; @@ -628,7 +628,7 @@ void __init set_irq_probe(unsigned int irq) struct irq_desc *desc; unsigned long flags; - if (irq >= NR_IRQS) { + if (irq >= nr_irqs) { printk(KERN_ERR "Trying to mark IRQ%d probeable\n", irq); return; diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index f4c8a03a9fb..e9d022cf593 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -47,6 +47,7 @@ handle_bad_irq(unsigned int irq, struct irq_desc *desc) * * Controller mappings for all interrupt sources: */ +int nr_irqs = NR_IRQS; struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = { [0 ... NR_IRQS-1] = { .status = IRQ_DISABLED, @@ -265,7 +266,7 @@ void early_init_irq_lock_class(void) { int i; - for (i = 0; i < NR_IRQS; i++) + for (i = 0; i < nr_irqs; i++) lockdep_set_class(&irq_desc[i].lock, &irq_desc_lock_class); } diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index d363f32dba7..d5a4333d8f1 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -34,7 +34,7 @@ void synchronize_irq(unsigned int irq) struct irq_desc *desc = irq_desc + irq; unsigned int status; - if (irq >= NR_IRQS) + if (irq >= nr_irqs) return; do { @@ -143,7 +143,7 @@ void disable_irq_nosync(unsigned int irq) struct irq_desc *desc = irq_desc + irq; unsigned long flags; - if (irq >= NR_IRQS) + if (irq >= nr_irqs) return; spin_lock_irqsave(&desc->lock, flags); @@ -171,7 +171,7 @@ void disable_irq(unsigned int irq) { struct irq_desc *desc = irq_desc + irq; - if (irq >= NR_IRQS) + if (irq >= nr_irqs) return; disable_irq_nosync(irq); @@ -214,7 +214,7 @@ void enable_irq(unsigned int irq) struct irq_desc *desc = irq_desc + irq; unsigned long flags; - if (irq >= NR_IRQS) + if (irq >= nr_irqs) return; spin_lock_irqsave(&desc->lock, flags); @@ -290,7 +290,7 @@ int can_request_irq(unsigned int irq, unsigned long irqflags) { struct irqaction *action; - if (irq >= NR_IRQS || irq_desc[irq].status & IRQ_NOREQUEST) + if (irq >= nr_irqs || irq_desc[irq].status & IRQ_NOREQUEST) return 0; action = irq_desc[irq].action; @@ -356,7 +356,7 @@ int setup_irq(unsigned int irq, struct irqaction *new) int shared = 0; int ret; - if (irq >= NR_IRQS) + if (irq >= nr_irqs) return -EINVAL; if (desc->chip == &no_irq_chip) @@ -515,7 +515,7 @@ void free_irq(unsigned int irq, void *dev_id) unsigned long flags; WARN_ON(in_interrupt()); - if (irq >= NR_IRQS) + if (irq >= nr_irqs) return; desc = irq_desc + irq; @@ -630,7 +630,7 @@ int request_irq(unsigned int irq, irq_handler_t handler, */ if ((irqflags & IRQF_SHARED) && !dev_id) return -EINVAL; - if (irq >= NR_IRQS) + if (irq >= nr_irqs) return -EINVAL; if (irq_desc[irq].status & IRQ_NOREQUEST) return -EINVAL; diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index a09dd29c2fd..e5225a65a4f 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -240,7 +240,7 @@ void init_irq_proc(void) /* * Create entries for all existing IRQs. */ - for (i = 0; i < NR_IRQS; i++) + for (i = 0; i < nr_irqs; i++) register_irq_proc(i); } diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index a8046791ba2..cba8aa5bc7f 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -33,8 +33,8 @@ static void resend_irqs(unsigned long arg) struct irq_desc *desc; int irq; - while (!bitmap_empty(irqs_resend, NR_IRQS)) { - irq = find_first_bit(irqs_resend, NR_IRQS); + while (!bitmap_empty(irqs_resend, nr_irqs)) { + irq = find_first_bit(irqs_resend, nr_irqs); clear_bit(irq, irqs_resend); desc = irq_desc + irq; local_irq_disable(); diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c index 19fe9d6ebfe..e26ca1e90c0 100644 --- a/kernel/irq/spurious.c +++ b/kernel/irq/spurious.c @@ -91,7 +91,7 @@ static int misrouted_irq(int irq) int i; int ok = 0; - for (i = 1; i < NR_IRQS; i++) { + for (i = 1; i < nr_irqs; i++) { struct irq_desc *desc = irq_desc + i; if (i == irq) /* Already tried */ @@ -107,7 +107,7 @@ static int misrouted_irq(int irq) static void poll_spurious_irqs(unsigned long dummy) { int i; - for (i = 1; i < NR_IRQS; i++) { + for (i = 1; i < nr_irqs; i++) { struct irq_desc *desc = irq_desc + i; unsigned int status; -- cgit v1.2.3