sparc64: Get rid of real_setup_per_cpu_areas().

Now that we defer the cpu_data() initializations to the end of per-cpu
setup, we can get rid of this local hack we had to setup the per-cpu
areas eary.

This is a necessary step in order to support HAVE_DYNAMIC_PER_CPU_AREA
since the per-cpu setup must run when page structs are available.

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/percpu_64.h

@@ -9,8 +9,6 @@ register unsigned long __local_per_cpu_offset asm("g5");
 
 #include <asm/trap_block.h>
 
-extern void real_setup_per_cpu_areas(void);
-
 #define __per_cpu_offset(__cpu) \
 	(trap_block[(__cpu)].__per_cpu_base)
 #define per_cpu_offset(x) (__per_cpu_offset(x))
@@ -19,8 +17,6 @@ extern void real_setup_per_cpu_areas(void);
 
 #else /* ! SMP */
 
-#define real_setup_per_cpu_areas()		do { } while (0)
-
 #endif	/* SMP */
 
 #include <asm-generic/percpu.h>

arch/sparc/kernel/smp_64.c

@@ -20,7 +20,7 @@
 #include <linux/cache.h>
 #include <linux/jiffies.h>
 #include <linux/profile.h>
-#include <linux/lmb.h>
+#include <linux/bootmem.h>
 #include <linux/cpu.h>
 
 #include <asm/head.h>
@@ -1371,9 +1371,9 @@ void smp_send_stop(void)
 {
 }
 
-void __init real_setup_per_cpu_areas(void)
+void __init setup_per_cpu_areas(void)
 {
-	unsigned long base, shift, paddr, goal, size, i;
+	unsigned long base, shift, goal, size, i;
 	char *ptr;
 
 	/* Copy section for each CPU (we discard the original) */
@@ -1383,13 +1383,12 @@ void __init real_setup_per_cpu_areas(void)
 	for (size = PAGE_SIZE; size < goal; size <<= 1UL)
 		shift++;
 
-	paddr = lmb_alloc(size * NR_CPUS, PAGE_SIZE);
-	if (!paddr) {
+	ptr = __alloc_bootmem(size * NR_CPUS, PAGE_SIZE, 0);
+	if (!ptr) {
 		prom_printf("Cannot allocate per-cpu memory.\n");
 		prom_halt();
 	}
 
-	ptr = __va(paddr);
 	base = ptr - __per_cpu_start;
 
 	for (i = 0; i < NR_CPUS; i++, ptr += size) {

arch/sparc/mm/init_64.c

@@ -1679,11 +1679,6 @@ pgd_t swapper_pg_dir[2048];
 static void sun4u_pgprot_init(void);
 static void sun4v_pgprot_init(void);
 
-/* Dummy function */
-void __init setup_per_cpu_areas(void)
-{
-}
-
 void __init paging_init(void)
 {
 	unsigned long end_pfn, shift, phys_base;
@@ -1807,8 +1802,6 @@ void __init paging_init(void)
 		mdesc_populate_present_mask(CPU_MASK_ALL_PTR);
 	}
 
-	real_setup_per_cpu_areas();
-
 	/* Once the OF device tree and MDESC have been setup, we know
 	 * the list of possible cpus.  Therefore we can allocate the
 	 * IRQ stacks.