From 3b8249e759c701c4a82f99d957be651a7657bf6f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 16:02:20 +0100 Subject: genirq: Do not copy affinity before set While rumaging through arch code I found that there are a few workarounds which deal with the fact that the initial affinity setting from request_irq() copies the mask into irq_data->affinity before the chip code is called. In the normal path we unconditionally copy the mask when the chip code returns 0. Copy after the code is called and add a return code IRQ_SET_MASK_OK_NOCOPY for the chip functions, which prevents the copy. That way we see the real mask when the chip function decided to truncate it further as some arches do. IRQ_SET_MASK_OK is 0, which is the current behaviour. Signed-off-by: Thomas Gleixner --- kernel/irq/proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/irq/proc.c') diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 6c8a2a9f8a7..a46bd762db4 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -89,7 +89,7 @@ static ssize_t irq_affinity_proc_write(struct file *file, if (!cpumask_intersects(new_value, cpu_online_mask)) { /* Special case for empty set - allow the architecture code to set default SMP affinity. */ - err = irq_select_affinity_usr(irq) ? -EINVAL : count; + err = irq_select_affinity_usr(irq, new_value) ? -EINVAL : count; } else { irq_set_affinity(irq, new_value); err = count; -- cgit v1.2.3-70-g09d2 From c78b9b65faa291def628dbd8539649f58299f0f3 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 16 Dec 2010 17:21:47 +0100 Subject: genirq: Implement generic irq_show_interrupts() All archs implement show_interrupts() in more or less the same way. That's tons of duplicated code with different bugs with no value. Implement a generic version and deprecate show_interrupts() Unfortunately we need some ifdeffery for !GENERIC_HARDIRQ archs. Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 1 + kernel/irq/Kconfig | 3 +++ kernel/irq/proc.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 67 insertions(+) (limited to 'kernel/irq/proc.c') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index de97b958f47..8da6643e39a 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -671,6 +671,7 @@ static inline void init_irq_proc(void) struct seq_file; int show_interrupts(struct seq_file *p, void *v); +int arch_show_interrupts(struct seq_file *p, int prec); extern int early_irq_init(void); extern int arch_probe_nr_irqs(void); diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index 8e42fec7686..4cd5d7135e0 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig @@ -20,6 +20,9 @@ config HAVE_SPARSE_IRQ config GENERIC_IRQ_PROBE def_bool n +config GENERIC_IRQ_SHOW + def_bool n + config GENERIC_PENDING_IRQ def_bool n diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index a46bd762db4..26449239bb4 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "internals.h" @@ -357,3 +358,65 @@ void init_irq_proc(void) } } +#ifdef CONFIG_GENERIC_IRQ_SHOW + +int __weak arch_show_interrupts(struct seq_file *p, int prec) +{ + return 0; +} + +int show_interrupts(struct seq_file *p, void *v) +{ + static int prec; + + unsigned long flags, any_count = 0; + int i = *(loff_t *) v, j; + struct irqaction *action; + struct irq_desc *desc; + + if (i > nr_irqs) + return 0; + + if (i == nr_irqs) + return arch_show_interrupts(p, prec); + + /* print header and calculate the width of the first column */ + if (i == 0) { + for (prec = 3, j = 1000; prec < 10 && j <= nr_irqs; ++prec) + j *= 10; + + seq_printf(p, "%*s", prec + 8, ""); + for_each_online_cpu(j) + seq_printf(p, "CPU%-8d", j); + seq_putc(p, '\n'); + } + + desc = irq_to_desc(i); + if (!desc) + return 0; + + raw_spin_lock_irqsave(&desc->lock, flags); + for_each_online_cpu(j) + any_count |= kstat_irqs_cpu(i, j); + action = desc->action; + if (!action && !any_count) + goto out; + + seq_printf(p, "%*d: ", prec, i); + for_each_online_cpu(j) + seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); + seq_printf(p, " %8s", desc->irq_data.chip->name); + seq_printf(p, "-%-8s", desc->name); + + if (action) { + seq_printf(p, " %s", action->name); + while ((action = action->next) != NULL) + seq_printf(p, ", %s", action->name); + } + + seq_putc(p, '\n'); +out: + raw_spin_unlock_irqrestore(&desc->lock, flags); + return 0; +} +#endif -- cgit v1.2.3-70-g09d2 From f230b6d5c48f8d12f4dfa1f8b5ab0b0320076d21 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 5 Feb 2011 15:20:04 +0100 Subject: genirq: Add IRQ_MOVE_PENDING to irq_data.state chip implementations need to know about it. Keep status in sync until all users are fixed. Accessor function: irqd_is_setaffinity_pending(irqdata) Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 20 ++++++++++++++++++-- kernel/irq/compat.h | 11 +++++++++++ kernel/irq/internals.h | 15 +++++++++++++++ kernel/irq/manage.c | 4 ++-- kernel/irq/migration.c | 6 +++--- kernel/irq/proc.c | 2 +- kernel/irq/settings.h | 2 ++ 7 files changed, 52 insertions(+), 8 deletions(-) (limited to 'kernel/irq/proc.c') diff --git a/include/linux/irq.h b/include/linux/irq.h index 62bb08e4af1..2899905bfac 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -58,15 +58,16 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_DISABLED 0x00000800 /* DEPRECATED */ #define IRQ_PENDING 0x00001000 /* DEPRECATED */ #define IRQ_MASKED 0x00002000 /* DEPRECATED */ +/* DEPRECATED use irq_setaffinity_pending() instead*/ +#define IRQ_MOVE_PENDING 0x00004000 #endif -#define IRQ_LEVEL 0x00004000 /* IRQ level triggered */ +#define IRQ_LEVEL 0x00008000 /* IRQ level triggered */ #define IRQ_PER_CPU 0x00010000 /* IRQ is per CPU */ #define IRQ_NOPROBE 0x00020000 /* IRQ is not valid for probing */ #define IRQ_NOREQUEST 0x00040000 /* IRQ cannot be requested */ #define IRQ_NOAUTOEN 0x00080000 /* IRQ will not be enabled on request irq */ #define IRQ_WAKEUP 0x00100000 /* IRQ triggers system wakeup */ -#define IRQ_MOVE_PENDING 0x00200000 /* need to re-target IRQ destination */ #define IRQ_NO_BALANCING 0x00400000 /* IRQ is excluded from balancing */ #define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */ #define IRQ_AFFINITY_SET 0x02000000 /* IRQ affinity was set from userspace*/ @@ -128,6 +129,21 @@ struct irq_data { #endif }; +/* + * Bit masks for irq_data.state + * + * IRQD_SETAFFINITY_PENDING - Affinity setting is pending + */ +enum { + /* Bit 0 - 7 reserved for TYPE will use later */ + IRQD_SETAFFINITY_PENDING = (1 << 8), +}; + +static inline bool irqd_is_setaffinity_pending(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_SETAFFINITY_PENDING; +} + /** * struct irq_chip - hardware interrupt chip descriptor * diff --git a/kernel/irq/compat.h b/kernel/irq/compat.h index 593abecbcc4..5e33aadadac 100644 --- a/kernel/irq/compat.h +++ b/kernel/irq/compat.h @@ -37,6 +37,15 @@ static inline void irq_compat_clr_masked(struct irq_desc *desc) { desc->status &= ~IRQ_MASKED; } +static inline void irq_compat_set_move_pending(struct irq_desc *desc) +{ + desc->status |= IRQ_MOVE_PENDING; +} + +static inline void irq_compat_clr_move_pending(struct irq_desc *desc) +{ + desc->status &= ~IRQ_MOVE_PENDING; +} #else static inline void irq_compat_set_progress(struct irq_desc *desc) { } static inline void irq_compat_clr_progress(struct irq_desc *desc) { } @@ -46,5 +55,7 @@ static inline void irq_compat_set_pending(struct irq_desc *desc) { } static inline void irq_compat_clr_pending(struct irq_desc *desc) { } static inline void irq_compat_set_masked(struct irq_desc *desc) { } static inline void irq_compat_clr_masked(struct irq_desc *desc) { } +static inline void irq_compat_set_move_pending(struct irq_desc *desc) { } +static inline void irq_compat_clr_move_pending(struct irq_desc *desc) { } #endif diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h index cef0849dcfa..e93e6090cd4 100644 --- a/kernel/irq/internals.h +++ b/kernel/irq/internals.h @@ -124,6 +124,21 @@ static inline void chip_bus_sync_unlock(struct irq_desc *desc) desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data); } +/* + * Manipulation functions for irq_data.state + */ +static inline void irqd_set_move_pending(struct irq_data *d) +{ + d->state_use_accessors |= IRQD_SETAFFINITY_PENDING; + irq_compat_set_move_pending(irq_data_to_desc(d)); +} + +static inline void irqd_clr_move_pending(struct irq_data *d) +{ + d->state_use_accessors &= ~IRQD_SETAFFINITY_PENDING; + irq_compat_clr_move_pending(irq_data_to_desc(d)); +} + /* * Debugging printout: */ diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index ccc9389909f..9a99c471d47 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -107,7 +107,7 @@ static inline bool irq_can_move_pcntxt(struct irq_desc *desc) } static inline bool irq_move_pending(struct irq_desc *desc) { - return desc->status & IRQ_MOVE_PENDING; + return irqd_is_setaffinity_pending(&desc->irq_data); } static inline void irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask) @@ -156,7 +156,7 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *mask) ret = 0; } } else { - desc->status |= IRQ_MOVE_PENDING; + irqd_set_move_pending(&desc->irq_data); irq_copy_pending(desc, mask); } diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c index 6f2f9848035..9485ae081dc 100644 --- a/kernel/irq/migration.c +++ b/kernel/irq/migration.c @@ -9,7 +9,7 @@ void move_masked_irq(int irq) struct irq_desc *desc = irq_to_desc(irq); struct irq_chip *chip = desc->irq_data.chip; - if (likely(!(desc->status & IRQ_MOVE_PENDING))) + if (likely(!irqd_is_setaffinity_pending(&desc->irq_data))) return; /* @@ -20,7 +20,7 @@ void move_masked_irq(int irq) return; } - desc->status &= ~IRQ_MOVE_PENDING; + irqd_clr_move_pending(&desc->irq_data); if (unlikely(cpumask_empty(desc->pending_mask))) return; @@ -58,7 +58,7 @@ void move_native_irq(int irq) struct irq_desc *desc = irq_to_desc(irq); bool masked; - if (likely(!(desc->status & IRQ_MOVE_PENDING))) + if (likely(!irqd_is_setaffinity_pending(&desc->irq_data))) return; if (unlikely(desc->istate & IRQS_DISABLED)) diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 26449239bb4..afe4e680314 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -25,7 +25,7 @@ static int irq_affinity_proc_show(struct seq_file *m, void *v) const struct cpumask *mask = desc->irq_data.affinity; #ifdef CONFIG_GENERIC_PENDING_IRQ - if (desc->status & IRQ_MOVE_PENDING) + if (irqd_is_setaffinity_pending(&desc->irq_data)) mask = desc->pending_mask; #endif seq_cpumask(m, mask); diff --git a/kernel/irq/settings.h b/kernel/irq/settings.h index ef09824e4b3..bb104a2dce7 100644 --- a/kernel/irq/settings.h +++ b/kernel/irq/settings.h @@ -20,3 +20,5 @@ enum { #define IRQ_MASKED GOT_YOU_MORON #undef IRQ_WAKEUP #define IRQ_WAKEUP GOT_YOU_MORON +#undef IRQ_MOVE_PENDING +#define IRQ_MOVE_PENDING GOT_YOU_MORON -- cgit v1.2.3-70-g09d2 From bce43032ad79fae0ce5b6174ce1321e643ceb54b Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Feb 2011 22:37:41 +0100 Subject: genirq: Reuse existing can set affinty check Add a !desc check while at it. Signed-off-by: Thomas Gleixner --- kernel/irq/manage.c | 4 ++-- kernel/irq/proc.c | 3 +-- 2 files changed, 3 insertions(+), 4 deletions(-) (limited to 'kernel/irq/proc.c') diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 84a0a9c2222..550ae97a004 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -73,8 +73,8 @@ int irq_can_set_affinity(unsigned int irq) { struct irq_desc *desc = irq_to_desc(irq); - if (!irqd_can_balance(&desc->irq_data) || !desc->irq_data.chip || - !desc->irq_data.chip->irq_set_affinity) + if (!desc || !irqd_can_balance(&desc->irq_data) || + !desc->irq_data.chip || !desc->irq_data.chip->irq_set_affinity) return 0; return 1; diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index afe4e680314..4cc2e5ed0be 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -66,8 +66,7 @@ static ssize_t irq_affinity_proc_write(struct file *file, cpumask_var_t new_value; int err; - if (!irq_to_desc(irq)->irq_data.chip->irq_set_affinity || no_irq_affinity || - irq_balancing_disabled(irq)) + if (!irq_can_set_affinity(irq) || no_irq_affinity) return -EIO; if (!alloc_cpumask_var(&new_value, GFP_KERNEL)) -- cgit v1.2.3-70-g09d2 From ee0401ec11bb7b83b7fa9476d0aaeabd59216062 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 17 Mar 2011 13:36:57 +0100 Subject: genirq: show_interrupts: Check desc->name before printing it blindly desc->name is not required and not used by all architectures. Signed-off-by: Thomas Gleixner --- kernel/irq/proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'kernel/irq/proc.c') diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 4cc2e5ed0be..760248de109 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -405,7 +405,8 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); seq_printf(p, " %8s", desc->irq_data.chip->name); - seq_printf(p, "-%-8s", desc->name); + if (desc->name) + seq_printf(p, "-%-8s", desc->name); if (action) { seq_printf(p, " %s", action->name); -- cgit v1.2.3-70-g09d2 From ab7798ffcf98b11a9525cf65bacdae3fd58d357f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 25 Mar 2011 16:48:50 +0100 Subject: genirq: Expand generic show_interrupts() Some archs want to print extra information for certain irq_chips which is per irq and not per chip. Allow them to provide a chip callback to print the chip name and the extra information. PowerPC wants to print the LEVEL/EDGE type information. Make it configurable. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 4 ++++ kernel/irq/Kconfig | 4 ++++ kernel/irq/proc.c | 15 ++++++++++++++- 3 files changed, 22 insertions(+), 1 deletion(-) (limited to 'kernel/irq/proc.c') diff --git a/include/linux/irq.h b/include/linux/irq.h index 1d3577f30d4..5d876c9b3a3 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -28,6 +28,7 @@ #include #include +struct seq_file; struct irq_desc; struct irq_data; typedef void (*irq_flow_handler_t)(unsigned int irq, @@ -270,6 +271,7 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d) * @irq_set_wake: enable/disable power-management wake-on of an IRQ * @irq_bus_lock: function to lock access to slow bus (i2c) chips * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips + * @irq_print_chip: optional to print special chip info in show_interrupts * @flags: chip specific flags * * @release: release function solely used by UML @@ -317,6 +319,8 @@ struct irq_chip { void (*irq_bus_lock)(struct irq_data *data); void (*irq_bus_sync_unlock)(struct irq_data *data); + void (*irq_print_chip)(struct irq_data *data, struct seq_file *p); + unsigned long flags; /* Currently used only by UML, might disappear one day.*/ diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index 09bef82d74c..00f2c037267 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig @@ -31,6 +31,10 @@ config GENERIC_IRQ_PROBE config GENERIC_IRQ_SHOW bool +# Print level/edge extra information +config GENERIC_IRQ_SHOW_LEVEL + bool + # Support for delayed migration from interrupt context config GENERIC_PENDING_IRQ bool diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 760248de109..626d092eed9 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -404,7 +404,20 @@ int show_interrupts(struct seq_file *p, void *v) seq_printf(p, "%*d: ", prec, i); for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); - seq_printf(p, " %8s", desc->irq_data.chip->name); + + if (desc->irq_data.chip) { + if (desc->irq_data.chip->irq_print_chip) + desc->irq_data.chip->irq_print_chip(&desc->irq_data, p); + else if (desc->irq_data.chip->name) + seq_printf(p, " %8s", desc->irq_data.chip->name); + else + seq_printf(p, " %8s", "-"); + } else { + seq_printf(p, " %8s", "None"); + } +#ifdef CONFIG_GENIRC_IRQ_SHOW_LEVEL + seq_printf(p, " %-8s", irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge"); +#endif if (desc->name) seq_printf(p, "-%-8s", desc->name); -- cgit v1.2.3-70-g09d2 From a6e120ed42004d6051fff7c3233e2554f12ccecb Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 25 Mar 2011 22:20:51 +0100 Subject: alpha: Use generic show_interrupts() The only subtle difference is that alpha uses ACTUAL_NR_IRQS and prints the IRQF_DISABLED flag. Change the generic implementation to deal with ACTUAL_NR_IRQS if defined. The IRQF_DISABLED printing is pointless, as we nowadays run all interrupts with irqs disabled. Signed-off-by: Thomas Gleixner --- arch/alpha/Kconfig | 1 + arch/alpha/kernel/irq.c | 67 ++++++++----------------------------------------- kernel/irq/proc.c | 8 ++++-- 3 files changed, 17 insertions(+), 59 deletions(-) (limited to 'kernel/irq/proc.c') diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index cc31bec2e31..bd4160c5719 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -11,6 +11,7 @@ config ALPHA select HAVE_GENERIC_HARDIRQS select GENERIC_IRQ_PROBE select AUTO_IRQ_AFFINITY if SMP + select GENERIC_IRQ_SHOW select GENERIC_HARDIRQS_NO_DEPRECATED help The Alpha is a 64-bit general-purpose processor designed and diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c index 1461d7c53b4..381431a2d6d 100644 --- a/arch/alpha/kernel/irq.c +++ b/arch/alpha/kernel/irq.c @@ -67,68 +67,21 @@ int irq_select_affinity(unsigned int irq) } #endif /* CONFIG_SMP */ -int -show_interrupts(struct seq_file *p, void *v) +int arch_show_interrupts(struct seq_file *p, int prec) { int j; - int irq = *(loff_t *) v; - struct irqaction * action; - struct irq_desc *desc; - unsigned long flags; #ifdef CONFIG_SMP - if (irq == 0) { - seq_puts(p, " "); - for_each_online_cpu(j) - seq_printf(p, "CPU%d ", j); - seq_putc(p, '\n'); - } -#endif - - if (irq < ACTUAL_NR_IRQS) { - desc = irq_to_desc(irq); - - if (!desc) - return 0; - - raw_spin_lock_irqsave(&desc->lock, flags); - action = desc->action; - if (!action) - goto unlock; - seq_printf(p, "%3d: ", irq); -#ifndef CONFIG_SMP - seq_printf(p, "%10u ", kstat_irqs(irq)); -#else - for_each_online_cpu(j) - seq_printf(p, "%10u ", kstat_irqs_cpu(irq, j)); + seq_puts(p, "IPI: "); + for_each_online_cpu(j) + seq_printf(p, "%10lu ", cpu_data[j].ipi_count); + seq_putc(p, '\n'); #endif - seq_printf(p, " %14s", irq_desc_get_chip(desc)->name); - seq_printf(p, " %c%s", - (action->flags & IRQF_DISABLED)?'+':' ', - action->name); - - for (action=action->next; action; action = action->next) { - seq_printf(p, ", %c%s", - (action->flags & IRQF_DISABLED)?'+':' ', - action->name); - } - - seq_putc(p, '\n'); -unlock: - raw_spin_unlock_irqrestore(&desc->lock, flags); - } else if (irq == ACTUAL_NR_IRQS) { -#ifdef CONFIG_SMP - seq_puts(p, "IPI: "); - for_each_online_cpu(j) - seq_printf(p, "%10lu ", cpu_data[j].ipi_count); - seq_putc(p, '\n'); -#endif - seq_puts(p, "PMI: "); - for_each_online_cpu(j) - seq_printf(p, "%10lu ", per_cpu(irq_pmi_count, j)); - seq_puts(p, " Performance Monitoring\n"); - seq_printf(p, "ERR: %10lu\n", irq_err_count); - } + seq_puts(p, "PMI: "); + for_each_online_cpu(j) + seq_printf(p, "%10lu ", per_cpu(irq_pmi_count, j)); + seq_puts(p, " Performance Monitoring\n"); + seq_printf(p, "ERR: %10lu\n", irq_err_count); return 0; } diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 626d092eed9..dd201bd3510 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -364,6 +364,10 @@ int __weak arch_show_interrupts(struct seq_file *p, int prec) return 0; } +#ifndef ACTUAL_NR_IRQS +# define ACTUAL_NR_IRQS nr_irqs +#endif + int show_interrupts(struct seq_file *p, void *v) { static int prec; @@ -373,10 +377,10 @@ int show_interrupts(struct seq_file *p, void *v) struct irqaction *action; struct irq_desc *desc; - if (i > nr_irqs) + if (i > ACTUAL_NR_IRQS) return 0; - if (i == nr_irqs) + if (i == ACTUAL_NR_IRQS) return arch_show_interrupts(p, prec); /* print header and calculate the width of the first column */ -- cgit v1.2.3-70-g09d2