patch-2.4.0-test6 linux/include/asm-sparc/hardirq.h

• Lines: 69
• Date: Fri Aug 4 16:15:37 2000
• Orig file: v2.4.0-test5/linux/include/asm-sparc/hardirq.h
• Orig date: Mon Jul 10 16:47:27 2000

diff -u --recursive --new-file v2.4.0-test5/linux/include/asm-sparc/hardirq.h linux/include/asm-sparc/hardirq.h
@@ -10,26 +10,37 @@
 #include <linux/config.h>
 #include <linux/threads.h>
 
-#ifndef CONFIG_SMP
-extern unsigned int __local_irq_count;
-#define local_irq_count(cpu)	__local_irq_count
+/* entry.S is sensitive to the offsets of these fields */
+typedef struct {
+	unsigned int __softirq_active;
+	unsigned int __softirq_mask;
+	unsigned int __local_irq_count;
+	unsigned int __local_bh_count;
+	unsigned int __syscall_count;
+} ____cacheline_aligned irq_cpustat_t;
+
+#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
 
 /*
  * Are we in an interrupt context? Either doing bottom half
  * or hardware interrupt processing?
  */
-#define in_interrupt()  ((__local_irq_count + __local_bh_count) != 0)
+#define in_interrupt() ({ int __cpu = smp_processor_id(); \
+	(local_irq_count(__cpu) + local_bh_count(__cpu) != 0); })
+
+#define in_irq() ({ int __cpu = smp_processor_id(); \
+	(local_irq_count(__cpu) != 0); })
 
-#define hardirq_trylock(cpu)	((void)(cpu), __local_irq_count == 0)
+#ifndef CONFIG_SMP
+
+#define hardirq_trylock(cpu)	(local_irq_count(cpu) == 0)
 #define hardirq_endlock(cpu)	do { (void)(cpu); } while (0)
 
-#define hardirq_enter(cpu)	(__local_irq_count++)
-#define hardirq_exit(cpu)	(__local_irq_count--)
+#define hardirq_enter(cpu)	(++local_irq_count(cpu))
+#define hardirq_exit(cpu)	(--local_irq_count(cpu))
 
 #define synchronize_irq()	barrier()
 
-#define in_irq() (__local_irq_count != 0)
-
 #else
 
 #include <asm/atomic.h>
@@ -37,21 +48,9 @@
 #include <asm/system.h>
 #include <asm/smp.h>
 
-extern unsigned int __local_irq_count[NR_CPUS];
-#define local_irq_count(cpu)	__local_irq_count[cpu]
 extern unsigned char global_irq_holder;
 extern spinlock_t global_irq_lock;
 extern atomic_t global_irq_count;
-
-/*
- * 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); })
-
-#define in_irq() ({ int __cpu = smp_processor_id(); \
-	(local_irq_count(__cpu) != 0); })
 
 static inline void release_irqlock(int cpu)
 {