patch-2.3.48 linux/include/asm-i386/hardirq.h

• Lines: 76
• Date: Sat Feb 26 20:45:59 2000
• Orig file: v2.3.47/linux/include/asm-i386/hardirq.h
• Orig date: Thu Feb 10 17:11:20 2000

diff -u --recursive --new-file v2.3.47/linux/include/asm-i386/hardirq.h linux/include/asm-i386/hardirq.h
@@ -2,25 +2,24 @@
 #define __ASM_HARDIRQ_H
 
 #include <linux/threads.h>
-
-extern unsigned int local_irq_count[NR_CPUS];
+#include <linux/irq.h>
 
 /*
  * Are we in an interrupt context? Either doing bottom half
  * or hardware interrupt processing?
  */
 #define in_interrupt() ({ int __cpu = smp_processor_id(); \
-	(local_irq_count[__cpu] + local_bh_count[__cpu] != 0); })
+	(local_irq_count(__cpu) + local_bh_count(__cpu) != 0); })
 
-#define in_irq() (local_irq_count[smp_processor_id()] != 0)
+#define in_irq() (local_irq_count(smp_processor_id()) != 0)
 
 #ifndef __SMP__
 
-#define hardirq_trylock(cpu)	(local_irq_count[cpu] == 0)
+#define hardirq_trylock(cpu)	(local_irq_count(cpu) == 0)
 #define hardirq_endlock(cpu)	do { } while (0)
 
-#define irq_enter(cpu, irq)	(local_irq_count[cpu]++)
-#define irq_exit(cpu, irq)	(local_irq_count[cpu]--)
+#define irq_enter(cpu, irq)	(local_irq_count(cpu)++)
+#define irq_exit(cpu, irq)	(local_irq_count(cpu)--)
 
 #define synchronize_irq()	barrier()
 
@@ -31,7 +30,16 @@
 
 extern unsigned char global_irq_holder;
 extern unsigned volatile int global_irq_lock;
-extern atomic_t global_irq_count;
+
+static inline int irqs_running (void)
+{
+	int i;
+
+	for (i = 0; i < smp_num_cpus; i++)
+		if (local_irq_count(i))
+			return 1;
+	return 0;
+}
 
 static inline void release_irqlock(int cpu)
 {
@@ -44,8 +52,7 @@
 
 static inline void irq_enter(int cpu, int irq)
 {
-	++local_irq_count[cpu];
-	atomic_inc(&global_irq_count);
+	++local_irq_count(cpu);
 
 	while (test_bit(0,&global_irq_lock)) {
 		/* nothing */;
@@ -54,13 +61,12 @@
 
 static inline void irq_exit(int cpu, int irq)
 {
-	atomic_dec(&global_irq_count);
-	--local_irq_count[cpu];
+	--local_irq_count(cpu);
 }
 
 static inline int hardirq_trylock(int cpu)
 {
-	return !local_irq_count[cpu] && !test_bit(0,&global_irq_lock);
+	return !local_irq_count(cpu) && !test_bit(0,&global_irq_lock);
 }
 
 #define hardirq_endlock(cpu)	do { } while (0)