Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-x86_64/hardirq.h b/include/asm-x86_64/hardirq.h
new file mode 100644
index 0000000..27c381f
--- /dev/null
+++ b/include/asm-x86_64/hardirq.h
@@ -0,0 +1,37 @@
+#ifndef __ASM_HARDIRQ_H
+#define __ASM_HARDIRQ_H
+
+#include <linux/config.h>
+#include <linux/threads.h>
+#include <linux/irq.h>
+#include <asm/pda.h>
+#include <asm/apic.h>
+
+#define __ARCH_IRQ_STAT 1
+
+/* Generate a lvalue for a pda member. Should fix softirq.c instead to use
+ special access macros. This would generate better code. */
+#define __IRQ_STAT(cpu,member) (read_pda(me)->member)
+
+#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
+
+/*
+ * 'what should we do if we get a hw irq event on an illegal vector'.
+ * each architecture has to answer this themselves.
+ */
+static inline void ack_bad_irq(unsigned int irq)
+{
+ printk("unexpected IRQ trap at vector %02x\n", irq);
+#ifdef CONFIG_X86_LOCAL_APIC
+ /*
+ * Currently unexpected vectors happen only on SMP and APIC.
+ * We _must_ ack these because every local APIC has only N
+ * irq slots per priority level, and a 'hanging, unacked' IRQ
+ * holds up an irq slot - in excessive cases (when multiple
+ * unexpected vectors occur) that might lock up the APIC
+ * completely.
+ */
+ ack_APIC_irq();
+#endif
+}
+#endif /* __ASM_HARDIRQ_H */