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authorArnd Bergmann <arnd@arndb.de>2009-05-13 22:56:33 +0000
committerArnd Bergmann <arnd@klappe2.(none)>2009-06-11 21:02:37 +0200
commitaafe4dbed0bf6cbdb2e9f03e1d42f8a540d8541d (patch)
tree5cc3e500ebb234ad82928de0ed680373c616dc44 /include/asm-generic/hardirq.h
parent9858c60cc2d33b18367b2bc6947e3ea23db26ccb (diff)
asm-generic: add generic versions of common headers
These are all kernel internal interfaces that get copied around a lot. In most cases, architectures can provide their own optimized versions, but these generic versions can work as well. I have tried to use the most common contents of each header to allow existing architectures to migrate easily. Thanks to Remis for suggesting a number of cleanups. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/asm-generic/hardirq.h')
-rw-r--r--include/asm-generic/hardirq.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/include/asm-generic/hardirq.h b/include/asm-generic/hardirq.h
new file mode 100644
index 000000000000..3d5d2c906ab3
--- /dev/null
+++ b/include/asm-generic/hardirq.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_GENERIC_HARDIRQ_H
+#define __ASM_GENERIC_HARDIRQ_H
+
+#include <linux/cache.h>
+#include <linux/threads.h>
+#include <linux/irq.h>
+
+typedef struct {
+ unsigned long __softirq_pending;
+} ____cacheline_aligned irq_cpustat_t;
+
+#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
+
+#ifndef HARDIRQ_BITS
+#define HARDIRQ_BITS 8
+#endif
+
+/*
+ * The hardirq mask has to be large enough to have
+ * space for potentially all IRQ sources in the system
+ * nesting on a single CPU:
+ */
+#if (1 << HARDIRQ_BITS) < NR_IRQS
+# error HARDIRQ_BITS is too low!
+#endif
+
+#ifndef ack_bad_irq
+static inline void ack_bad_irq(unsigned int irq)
+{
+ printk(KERN_CRIT "unexpected IRQ trap at vector %02x\n", irq);
+}
+#endif
+
+#endif /* __ASM_GENERIC_HARDIRQ_H */