[ORLinux] [PATCH v3, part4 26/39] mm/openrisc: prepare for removing num_physpages and simplify mem_init()

[Jonas Bonn]

Prepare for removing num_physpages and simplify mem_init().
Signed-off-by: Jiang Liu <jiang.liu at huawei.com>
Cc: Jonas Bonn <jonas at southpole.se>
Cc: David Howells <dhowells at redhat.com>
Cc: Arnd Bergmann <arnd at arndb.de>
Cc: linux at lists.openrisc.net
Cc: linux-kernel at vger.kernel.org

Tested and works fine on OpenRISC.

Acked-by: Jonas Bonn <jonas at southpole.se>

/Jonas

---
Hi all,
Sorry for my mistake that my previous patch series has been screwed up.
git://github.com/jiangliu/linux.git mem_init
Any help to review and test are welcomed!
Regards!
Gerry
---
arch/openrisc/mm/init.c | 44 ++++----------------------------------------
1 file changed, 4 insertions(+), 40 deletions(-)
diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index 71d6b40..f3c8f47 100644
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -191,56 +191,20 @@ void __init paging_init(void)
/* References to section boundaries */
-static int __init free_pages_init(void)
-{
- int reservedpages, pfn;
-
- /* this will put all low memory onto the freelists */
- free_all_bootmem();
-
- reservedpages = 0;
- for (pfn = 0; pfn < max_low_pfn; pfn++) {
- /*
- * Only count reserved RAM pages
- */
- if (PageReserved(mem_map + pfn))
- reservedpages++;
- }
-
- return reservedpages;
-}
-
-static void __init set_max_mapnr_init(void)
-{
- max_mapnr = num_physpages = max_low_pfn;
-}
-
void __init mem_init(void)
{
- int codesize, reservedpages, datasize, initsize;
-
BUG_ON(!mem_map);
- set_max_mapnr_init();
-
+ max_mapnr = max_low_pfn;
high_memory = (void *)__va(max_low_pfn * PAGE_SIZE);
/* clear the zero-page */
memset((void *)empty_zero_page, 0, PAGE_SIZE);
- reservedpages = free_pages_init();
-
- codesize = (unsigned long)&_etext - (unsigned long)&_stext;
- datasize = (unsigned long)&_edata - (unsigned long)&_etext;
- initsize = (unsigned long)&__init_end - (unsigned long)&__init_begin;
+ /* this will put all low memory onto the freelists */
+ free_all_bootmem();
- printk(KERN_INFO
- "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init, %ldk highmem)\n",
- (unsigned long)nr_free_pages() << (PAGE_SHIFT - 10),
- max_mapnr << (PAGE_SHIFT - 10), codesize >> 10,
- reservedpages << (PAGE_SHIFT - 10), datasize >> 10,
- initsize >> 10, (unsigned long)(0 << (PAGE_SHIFT - 10))
- );
+ mem_init_print_info(NULL);
printk("mem_init_done ...........................................\n");
mem_init_done = 1;