vserver 2.0 rc7

[linux-2.6.git] / include / asm-sparc64 / percpu.h

diff --git a/include/asm-sparc64/percpu.h b/include/asm-sparc64/percpu.h
index 8571d6d..aea4e51 100644 (file)
--- a/include/asm-sparc64/percpu.h
+++ b/include/asm-sparc64/percpu.h
@@ -1,6 +1,49 @@
 #ifndef __ARCH_SPARC64_PERCPU__
 #define __ARCH_SPARC64_PERCPU__
 
-#include <asm-generic/percpu.h>
+#include <linux/compiler.h>
+
+#ifdef CONFIG_SMP
+
+extern void setup_per_cpu_areas(void);
+
+extern unsigned long __per_cpu_base;
+extern unsigned long __per_cpu_shift;
+#define __per_cpu_offset(__cpu) \
+       (__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
+
+/* Separate out the type, so (int[3], foo) works. */
+#define DEFINE_PER_CPU(type, name) \
+    __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name
+
+register unsigned long __local_per_cpu_offset asm("g5");
+
+/* var is in discarded region: offset to particular copy we want */
+#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)))
+#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
+
+/* A macro to avoid #include hell... */
+#define percpu_modcopy(pcpudst, src, size)                     \
+do {                                                           \
+       unsigned int __i;                                       \
+       for (__i = 0; __i < NR_CPUS; __i++)                     \
+               if (cpu_possible(__i))                          \
+                       memcpy((pcpudst)+__per_cpu_offset(__i), \
+                              (src), (size));                  \
+} while (0)
+#else /* ! SMP */
+
+#define DEFINE_PER_CPU(type, name) \
+    __typeof__(type) per_cpu__##name
+
+#define per_cpu(var, cpu)                      (*((void)cpu, &per_cpu__##var))
+#define __get_cpu_var(var)                     per_cpu__##var
+
+#endif /* SMP */
+
+#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
+
+#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
+#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
 
 #endif /* __ARCH_SPARC64_PERCPU__ */