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-rw-r--r--include/asm-generic/percpu.h9
1 files changed, 3 insertions, 6 deletions
diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
index 0703aa75b5e8..63d2b68c826e 100644
--- a/include/asm-generic/percpu.h
+++ b/include/asm-generic/percpu.h
@@ -36,17 +36,14 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
#endif
/*
- * Add a offset to a pointer but keep the pointer as is.
- *
- * Only S390 provides its own means of moving the pointer.
+ * Add an offset to a pointer but keep the pointer as-is. Use RELOC_HIDE()
+ * to prevent the compiler from making incorrect assumptions about the
+ * pointer value. The weird cast keeps both GCC and sparse happy.
*/
-#ifndef SHIFT_PERCPU_PTR
-/* Weird cast keeps both GCC and sparse happy. */
#define SHIFT_PERCPU_PTR(__p, __offset) ({ \
__verify_pcpu_ptr((__p)); \
RELOC_HIDE((typeof(*(__p)) __kernel __force *)(__p), (__offset)); \
})
-#endif
/*
* A percpu variable may point to a discarded regions. The following are