1 files changed, 53 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/percpu.h b/arch/ia64/include/asm/percpu.h
new file mode 100644
index 000000000..f357b9bb3
--- /dev/null
+++ b/arch/ia64/include/asm/percpu.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_IA64_PERCPU_H
+#define _ASM_IA64_PERCPU_H
+
+/*
+ * Copyright (C) 2002-2003 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#ifdef __ASSEMBLY__
+# define THIS_CPU(var)	(var)  /* use this to mark accesses to per-CPU variables... */
+#else /* !__ASSEMBLY__ */
+
+
+#include <linux/threads.h>
+
+#ifdef CONFIG_SMP
+
+#ifdef HAVE_MODEL_SMALL_ATTRIBUTE
+# define PER_CPU_ATTRIBUTES	__attribute__((__model__ (__small__)))
+#endif
+
+#define __my_cpu_offset	__ia64_per_cpu_var(local_per_cpu_offset)
+
+extern void *per_cpu_init(void);
+
+#else /* ! SMP */
+
+#define per_cpu_init()				(__phys_per_cpu_start)
+
+#endif	/* SMP */
+
+#define PER_CPU_BASE_SECTION ".data..percpu"
+
+/*
+ * Be extremely careful when taking the address of this variable!  Due to virtual
+ * remapping, it is different from the canonical address returned by this_cpu_ptr(&var)!
+ * On the positive side, using __ia64_per_cpu_var() instead of this_cpu_ptr() is slightly
+ * more efficient.
+ */
+#define __ia64_per_cpu_var(var) (*({					\
+	__verify_pcpu_ptr(&(var));					\
+	((typeof(var) __kernel __force *)&(var));			\
+}))
+
+#include <asm-generic/percpu.h>
+
+/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
+DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_IA64_PERCPU_H */