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Message-Id: <1217732365-16595-8-git-send-email-yhlu.kernel@gmail.com>
Date: Sat, 2 Aug 2008 19:59:07 -0700
From: Yinghai Lu <yhlu.kernel@...il.com>
To: Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
Mike Travis <travis@....com>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Yinghai Lu <yhlu.kernel@...il.com>
Subject: [PATCH 07/25] introduce nr_irqs
and at this point it is equal NR_IRQS
Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>
---
include/linux/irq.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 ++--
8 files changed, 32 insertions(+), 29 deletions(-)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 1d73d1a..bd69d90 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -24,6 +24,8 @@
#include <asm/ptrace.h>
#include <asm/irq_regs.h>
+extern int nr_irqs;
+
struct irq_desc;
typedef void (*irq_flow_handler_t)(unsigned int irq,
struct irq_desc *desc);
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c
index 533068c..c689e98 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 3cd441e..20a9307 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;
}
@@ -148,7 +148,7 @@ 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;
@@ -174,7 +174,7 @@ 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;
@@ -200,7 +200,7 @@ 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;
}
@@ -544,7 +544,7 @@ __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;
@@ -609,7 +609,7 @@ 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;
@@ -627,7 +627,7 @@ 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 f4c8a03..e9d022c 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 22d10d3..3bd67c8 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;
@@ -349,7 +349,7 @@ 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)
@@ -503,7 +503,7 @@ 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;
@@ -617,7 +617,7 @@ 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 6c6d35d..74d7922 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -234,7 +234,7 @@ 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 a804679..cba8aa5 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 19fe9d6..e26ca1e 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;
--
1.5.4.5
--
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