patch-2.1.80 linux/include/asm-arm/hardirq.h

• Lines: 24
• Date: Tue Jan 20 16:39:42 1998
• Orig file: v2.1.79/linux/include/asm-arm/hardirq.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.79/linux/include/asm-arm/hardirq.h linux/include/asm-arm/hardirq.h
@@ -0,0 +1,23 @@
+#ifndef __ASM_HARDIRQ_H
+#define __ASM_HARDIRQ_H
+
+#include <linux/tasks.h>
+
+extern unsigned int local_irq_count[NR_CPUS];
+#define in_interrupt()	(local_irq_count[smp_processor_id()] != 0)
+
+#ifndef __SMP__
+
+#define hardirq_trylock(cpu)	(local_irq_count[cpu] == 0)
+#define hardirq_endlock(cpu)	do { } while (0)
+
+#define hardirq_enter(cpu)	(local_irq_count[cpu]++)
+#define hardirq_exit(cpu)	(local_irq_count[cpu]--)
+
+#define synchronize_irq()	do { } while (0)
+
+#else
+#error SMP not supported
+#endif /* __SMP__ */
+
+#endif /* __ASM_HARDIRQ_H */