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-rw-r--r--kernel/arch/alpha/include/asm/percpu.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/arch/alpha/include/asm/percpu.h b/kernel/arch/alpha/include/asm/percpu.h
new file mode 100644
index 000000000..2c12378e3
--- /dev/null
+++ b/kernel/arch/alpha/include/asm/percpu.h
@@ -0,0 +1,18 @@
+#ifndef __ALPHA_PERCPU_H
+#define __ALPHA_PERCPU_H
+
+/*
+ * To calculate addresses of locally defined variables, GCC uses
+ * 32-bit displacement from the GP. Which doesn't work for per cpu
+ * variables in modules, as an offset to the kernel per cpu area is
+ * way above 4G.
+ *
+ * Always use weak definitions for percpu variables in modules.
+ */
+#if defined(MODULE) && defined(CONFIG_SMP)
+#define ARCH_NEEDS_WEAK_PER_CPU
+#endif
+
+#include <asm-generic/percpu.h>
+
+#endif /* __ALPHA_PERCPU_H */