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authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-15 20:19:40 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-15 20:19:40 +0400
commit024b246ed24492d6c2ee14c34d742b137fce1b94 (patch)
tree428444950025503218c96b03c86f749403626dec /arch/alpha/include/asm/hardirq.h
parent9419fc1c957d600093baaea247fef23cca3b4e93 (diff)
downloadlinux-024b246ed24492d6c2ee14c34d742b137fce1b94.tar.xz
alpha: move include/asm-alpha to arch/alpha/include/asm
Sam Ravnborg did the build-test that the direct header file move works, I'm just committing it. This is a pure move: mkdir arch/alpha/include git mv include/asm-alpha arch/alpha/include/asm with no other changes. Requested-and-tested-by: Sam Ravnborg <sam@ravnborg.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha/include/asm/hardirq.h')
-rw-r--r--arch/alpha/include/asm/hardirq.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/hardirq.h b/arch/alpha/include/asm/hardirq.h
new file mode 100644
index 000000000000..d953e234daa8
--- /dev/null
+++ b/arch/alpha/include/asm/hardirq.h
@@ -0,0 +1,30 @@
+#ifndef _ALPHA_HARDIRQ_H
+#define _ALPHA_HARDIRQ_H
+
+#include <linux/threads.h>
+#include <linux/cache.h>
+
+
+/* entry.S is sensitive to the offsets of these fields */
+typedef struct {
+ unsigned long __softirq_pending;
+} ____cacheline_aligned irq_cpustat_t;
+
+#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
+
+void ack_bad_irq(unsigned int irq);
+
+#define HARDIRQ_BITS 12
+
+/*
+ * The hardirq mask has to be large enough to have
+ * space for potentially nestable IRQ sources in the system
+ * to nest on a single CPU. On Alpha, interrupts are masked at the CPU
+ * by IPL as well as at the system level. We only have 8 IPLs (UNIX PALcode)
+ * so we really only have 8 nestable IRQs, but allow some overhead
+ */
+#if (1 << HARDIRQ_BITS) < 16
+#error HARDIRQ_BITS is too low!
+#endif
+
+#endif /* _ALPHA_HARDIRQ_H */