alpha: kill unnecessary __used attribute in PER_CPU_ATTRIBUTES

With the previous percpu variable definition change, all percpu
variables are global and there's no need to specify __used, which only
triggers on recent compilers anyway. Kill it.

[ Impact: remove unnecessary percpu attribute ]

Signed-off-by: Tejun Heo <[e-mail]>
Cc: Ivan Kokshaysky <[e-mail]>
Cc: Richard Henderson <[e-mail]>

arch/alpha/include/asm/percpu.h

···
 
 #ifndef MODULE
 #define SHIFT_PERCPU_PTR(var, offset) RELOC_HIDE(&per_cpu_var(var), (offset))
-#define PER_CPU_ATTRIBUTES
 #else
 /*
  * To calculate addresses of locally defined variables, GCC uses 32-bit
···
 		ldq %0, per_cpu__" #var"(%1)\t!literal"		\
 		: "=&r"(__ptr), "=&r"(tmp_gp));		\
 	(typeof(&per_cpu_var(var)))(__ptr + (offset)); })
-
-#define PER_CPU_ATTRIBUTES	__used
 
 #endif /* MODULE */
 
···
 #define per_cpu(var, cpu)		(*((void)(cpu), &per_cpu_var(var)))
 #define __get_cpu_var(var)		per_cpu_var(var)
 #define __raw_get_cpu_var(var)		per_cpu_var(var)
-
-#define PER_CPU_ATTRIBUTES
 
 #endif /* SMP */