mm/m32r: prepare for removing num_physpages and simplify mem_init()

Prepare for removing num_physpages and simplify mem_init().

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 6 insertions, 49 deletions

diff --git a/arch/m32r/mm/discontig.c b/arch/m32r/mm/discontig.c
index 2c468e8b5853..27196303ce36 100644
--- a/arch/m32r/mm/discontig.c
+++ b/arch/m32r/mm/discontig.c
@@ -129,11 +129,10 @@ unsigned long __init setup_memory(void)
 #define START_PFN(nid)          (NODE_DATA(nid)->bdata->node_min_pfn)
 #define MAX_LOW_PFN(nid)        (NODE_DATA(nid)->bdata->node_low_pfn)
 
-unsigned long __init zone_sizes_init(void)
+void __init zone_sizes_init(void)
 {
         unsigned long zones_size[MAX_NR_ZONES], zholes_size[MAX_NR_ZONES];
         unsigned long low, start_pfn;
-        unsigned long holes = 0;
         int nid, i;
         mem_prof_t *mp;
 
@@ -147,7 +146,6 @@ unsigned long __init zone_sizes_init(void)
                 low = MAX_LOW_PFN(nid);
                 zones_size[ZONE_DMA] = low - start_pfn;
                 zholes_size[ZONE_DMA] = mp->holes;
-                holes += zholes_size[ZONE_DMA];
 
                 node_set_state(nid, N_NORMAL_MEMORY);
                 free_area_init_node(nid, zones_size, start_pfn, zholes_size);
@@ -161,6 +159,4 @@ unsigned long __init zone_sizes_init(void)
         NODE_DATA(1)->node_zones->watermark[WMARK_MIN] = 0;
         NODE_DATA(1)->node_zones->watermark[WMARK_LOW] = 0;
         NODE_DATA(1)->node_zones->watermark[WMARK_HIGH] = 0;
-
-        return holes;
 }
diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
index a501838233ab..a4f8d934e25f 100644
--- a/arch/m32r/mm/init.c
+++ b/arch/m32r/mm/init.c
@@ -40,7 +40,6 @@ unsigned long mmu_context_cache_dat;
 #else
 unsigned long mmu_context_cache_dat[NR_CPUS];
 #endif
-static unsigned long hole_pages;
 
 /*
  * function prototype
@@ -57,7 +56,7 @@ void free_initrd_mem(unsigned long, unsigned long);
 #define MAX_LOW_PFN(nid)        (NODE_DATA(nid)->bdata->node_low_pfn)
 
 #ifndef CONFIG_DISCONTIGMEM
-unsigned long __init zone_sizes_init(void)
+void __init zone_sizes_init(void)
 {
         unsigned long  zones_size[MAX_NR_ZONES] = {0, };
         unsigned long  max_dma;
@@ -83,11 +82,9 @@ unsigned long __init zone_sizes_init(void)
 #endif /* CONFIG_MMU */
 
         free_area_init_node(0, zones_size, start_pfn, 0);
-
-        return 0;
 }
 #else   /* CONFIG_DISCONTIGMEM */
-extern unsigned long zone_sizes_init(void);
+extern void zone_sizes_init(void);
 #endif  /* CONFIG_DISCONTIGMEM */
 
 /*======================================================================*
@@ -105,24 +102,7 @@ void __init paging_init(void)
         for (i = 0 ; i < USER_PTRS_PER_PGD * 2 ; i++)
                 pgd_val(pg_dir[i]) = 0;
 #endif /* CONFIG_MMU */
-        hole_pages = zone_sizes_init();
-}
-
-int __init reservedpages_count(void)
-{
-        int reservedpages, nid, i;
-
-        reservedpages = 0;
-        for_each_online_node(nid) {
-                unsigned long flags;
-                pgdat_resize_lock(NODE_DATA(nid), &flags);
-                for (i = 0 ; i < MAX_LOW_PFN(nid) - START_PFN(nid) ; i++)
-                        if (PageReserved(nid_page_nr(nid, i)))
-                                reservedpages++;
-                pgdat_resize_unlock(NODE_DATA(nid), &flags);
-        }
-
-        return reservedpages;
+        zone_sizes_init();
 }
 
 /*======================================================================*
@@ -131,20 +111,13 @@ int __init reservedpages_count(void)
  *======================================================================*/
 void __init mem_init(void)
 {
-        int codesize, reservedpages, datasize, initsize;
         int nid;
 #ifndef CONFIG_MMU
         extern unsigned long memory_end;
 #endif
 
-        num_physpages = 0;
-        for_each_online_node(nid)
-                num_physpages += MAX_LOW_PFN(nid) - START_PFN(nid) + 1;
-
-        num_physpages -= hole_pages;
-
 #ifndef CONFIG_DISCONTIGMEM
-        max_mapnr = num_physpages;
+        max_mapnr = get_num_physpages();
 #endif  /* CONFIG_DISCONTIGMEM */
 
 #ifdef CONFIG_MMU
@@ -160,19 +133,7 @@ void __init mem_init(void)
         for_each_online_node(nid)
                 free_all_bootmem_node(NODE_DATA(nid));
 
-        reservedpages = reservedpages_count() - hole_pages;
-        codesize = (unsigned long) &_etext - (unsigned long)&_text;
-        datasize = (unsigned long) &_edata - (unsigned long)&_etext;
-        initsize = (unsigned long) &__init_end - (unsigned long)&__init_begin;
-
-        printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, "
-                "%dk reserved, %dk data, %dk init)\n",
-                nr_free_pages() << (PAGE_SHIFT-10),
-                num_physpages << (PAGE_SHIFT-10),
-                codesize >> 10,
-                reservedpages << (PAGE_SHIFT-10),
-                datasize >> 10,
-                initsize >> 10);
+        mem_init_print_info(NULL);
 }
 
 /*======================================================================*