Blackfin arch: SMP supporting patchset: some other misc code

Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like

In this patch, we provide SMP extend to some other misc code

Singed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

arch/blackfin/kernel/vmlinux.lds.S

@@ -109,7 +109,7 @@ SECTIONS
 #endif
 
 		DATA_DATA
-		*(.data.*)
+		*(.data)
 		CONSTRUCTORS
 
 		/* make sure the init_task is aligned to the
@@ -161,6 +161,7 @@ SECTIONS
 		*(.con_initcall.init)
 		___con_initcall_end = .;
 	}
+	PERCPU(4)
 	SECURITY_INIT
 	.init.ramfs :
 	{
@@ -236,7 +237,6 @@ SECTIONS
 		. = ALIGN(4);
 		__ebss_l2 = .;
 	}
-
 	/* Force trailing alignment of our init section so that when we
 	 * free our init memory, we don't leave behind a partial page.
 	 */