patch-2.4.2 linux/include/asm-cris/hardirq.h

• Lines: 36
• Date: Thu Feb 8 16:32:44 2001
• Orig file: v2.4.1/linux/include/asm-cris/hardirq.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.1/linux/include/asm-cris/hardirq.h linux/include/asm-cris/hardirq.h
@@ -0,0 +1,35 @@
+#ifndef __ASM_HARDIRQ_H
+#define __ASM_HARDIRQ_H
+
+/* only non-SMP supported */
+
+#include <linux/threads.h>
+
+/* 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(smp_processor_id()) + \
+			  local_bh_count(smp_processor_id())) != 0)
+#define in_irq()        (local_irq_count(smp_processor_id()) != 0)
+
+#define hardirq_trylock(cpu)    (local_irq_count(cpu) == 0)
+#define hardirq_endlock(cpu)    do { (void)(cpu); } while (0)
+
+#define irq_enter(cpu)      (local_irq_count(cpu)++)
+#define irq_exit(cpu)       (local_irq_count(cpu)--)
+
+#define synchronize_irq()       barrier()
+
+#endif /* __ASM_HARDIRQ_H */