+ make-noirqdebug-irqfixup-__read_mostly-add-unlikely.patch added to -mm tree

[akpm@xxxxxxxx]

The patch titled

     make noirqdebug/irqfixup __read_mostly, add (un)likely()

has been added to the -mm tree.  Its filename is

     make-noirqdebug-irqfixup-__read_mostly-add-unlikely.patch

See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this


From: Andreas Mohr <andi@xxxxxxxxxxxxxxxxxxxxxxx>

Signed-off-by: Andreas Mohr <andi@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---

 arch/arm/kernel/irq.c |    4 ++--
 kernel/irq/spurious.c |   12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff -puN arch/arm/kernel/irq.c~make-noirqdebug-irqfixup-__read_mostly-add-unlikely arch/arm/kernel/irq.c
--- 25/arch/arm/kernel/irq.c~make-noirqdebug-irqfixup-__read_mostly-add-unlikely	Fri Apr 21 15:12:14 2006
+++ 25-akpm/arch/arm/kernel/irq.c	Fri Apr 21 15:12:14 2006
@@ -52,7 +52,7 @@
  */
 #define MAX_IRQ_CNT	100000
 
-static int noirqdebug;
+static int noirqdebug __read_mostly;
 static volatile unsigned long irq_err_count;
 static DEFINE_SPINLOCK(irq_controller_lock);
 static LIST_HEAD(irq_pending);
@@ -81,7 +81,7 @@ irqreturn_t no_action(int irq, void *dev
 
 void do_bad_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
 {
-	irq_err_count += 1;
+	irq_err_count++;
 	printk(KERN_ERR "IRQ: spurious interrupt %d\n", irq);
 }
 
diff -puN kernel/irq/spurious.c~make-noirqdebug-irqfixup-__read_mostly-add-unlikely kernel/irq/spurious.c
--- 25/kernel/irq/spurious.c~make-noirqdebug-irqfixup-__read_mostly-add-unlikely	Fri Apr 21 15:12:14 2006
+++ 25-akpm/kernel/irq/spurious.c	Fri Apr 21 15:14:08 2006
@@ -11,7 +11,7 @@
 #include <linux/kallsyms.h>
 #include <linux/interrupt.h>
 
-static int irqfixup;
+static int irqfixup __read_mostly;
 
 /*
  * Recovery handler for misrouted interrupts.
@@ -136,9 +136,9 @@ static void report_bad_irq(unsigned int 
 void note_interrupt(unsigned int irq, irq_desc_t *desc, irqreturn_t action_ret,
 			struct pt_regs *regs)
 {
-	if (action_ret != IRQ_HANDLED) {
+	if (unlikely(action_ret != IRQ_HANDLED)) {
 		desc->irqs_unhandled++;
-		if (action_ret != IRQ_NONE)
+		if (unlikely(action_ret != IRQ_NONE))
 			report_bad_irq(irq, desc, action_ret);
 	}
 
@@ -152,11 +152,11 @@ void note_interrupt(unsigned int irq, ir
 	}
 
 	desc->irq_count++;
-	if (desc->irq_count < 100000)
+	if (likely(desc->irq_count < 100000))
 		return;
 
 	desc->irq_count = 0;
-	if (desc->irqs_unhandled > 99900) {
+	if (unlikely(desc->irqs_unhandled > 99900)) {
 		/*
 		 * The interrupt is stuck
 		 */
@@ -171,7 +171,7 @@ void note_interrupt(unsigned int irq, ir
 	desc->irqs_unhandled = 0;
 }
 
-int noirqdebug;
+int noirqdebug __read_mostly;
 
 int __init noirqdebug_setup(char *str)
 {
_

Patches currently in -mm which might be from andi@xxxxxxxxxxxxxxxxxxxxxxx are

acpi-idle-__read_mostly-and-de-init-static-var.patch
acx1xx-wireless-driver.patch
i386-apmc-optimization.patch
x86-powerpc-make-hardirq_ctx-and-softirq_ctx-__read_mostly.patch
make-noirqdebug-irqfixup-__read_mostly-add-unlikely.patch
make-pmtmr_ioport-__read_mostly.patch

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