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Subject[RFC PATCH v1 14/33] mm/MIPS: use common help functions to free reserved pages
Date
Use common help functions to free reserved pages.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/mm/init.c | 31 +++++++++----------------------
arch/mips/sgi-ip27/ip27-memory.c | 4 ++--
2 files changed, 11 insertions(+), 24 deletions(-)

diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 6792925..60f7c61 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -77,10 +77,9 @@ EXPORT_SYMBOL_GPL(empty_zero_page);
/*
* Not static inline because used by IP27 special magic initialization code
*/
-unsigned long setup_zero_pages(void)
+void setup_zero_pages(void)
{
- unsigned int order;
- unsigned long size;
+ unsigned int order, i;
struct page *page;

if (cpu_has_vce)
@@ -94,15 +93,10 @@ unsigned long setup_zero_pages(void)

page = virt_to_page((void *)empty_zero_page);
split_page(page, order);
- while (page < virt_to_page((void *)(empty_zero_page + (PAGE_SIZE << order)))) {
- SetPageReserved(page);
- page++;
- }
-
- size = PAGE_SIZE << order;
- zero_page_mask = (size - 1) & PAGE_MASK;
+ for (i = 0; i < (1 << order); i++, page++)
+ mark_page_reserved(page);

- return 1UL << order;
+ zero_page_mask = ((PAGE_SIZE << order) - 1) & PAGE_MASK;
}

#ifdef CONFIG_MIPS_MT_SMTC
@@ -380,7 +374,7 @@ void __init mem_init(void)
high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);

totalram_pages += free_all_bootmem();
- totalram_pages -= setup_zero_pages(); /* Setup zeroed pages. */
+ setup_zero_pages(); /* Setup zeroed pages. */

reservedpages = ram = 0;
for (tmp = 0; tmp < max_low_pfn; tmp++)
@@ -440,11 +434,8 @@ void free_init_pages(const char *what, unsigned long begin, unsigned long end)
struct page *page = pfn_to_page(pfn);
void *addr = phys_to_virt(PFN_PHYS(pfn));

- ClearPageReserved(page);
- init_page_count(page);
memset(addr, POISON_FREE_INITMEM, PAGE_SIZE);
- __free_page(page);
- totalram_pages++;
+ free_reserved_page(page);
}
printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
}
@@ -452,18 +443,14 @@ void free_init_pages(const char *what, unsigned long begin, unsigned long end)
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- free_init_pages("initrd memory",
- virt_to_phys((void *)start),
- virt_to_phys((void *)end));
+ free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
}
#endif

void __init_refok free_initmem(void)
{
prom_free_prom_memory();
- free_init_pages("unused kernel memory",
- __pa_symbol(&__init_begin),
- __pa_symbol(&__init_end));
+ free_initmem_default(POISON_FREE_INITMEM);
}

#ifndef CONFIG_MIPS_PGD_C0_CONTEXT
diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c
index 3505d08..5f2bddb 100644
--- a/arch/mips/sgi-ip27/ip27-memory.c
+++ b/arch/mips/sgi-ip27/ip27-memory.c
@@ -457,7 +457,7 @@ void __init prom_free_prom_memory(void)
/* We got nothing to free here ... */
}

-extern unsigned long setup_zero_pages(void);
+extern void setup_zero_pages(void);

void __init paging_init(void)
{
@@ -492,7 +492,7 @@ void __init mem_init(void)
totalram_pages += free_all_bootmem_node(NODE_DATA(node));
}

- totalram_pages -= setup_zero_pages(); /* This comes from node 0 */
+ setup_zero_pages(); /* This comes from node 0 */

codesize = (unsigned long) &_etext - (unsigned long) &_text;
datasize = (unsigned long) &_edata - (unsigned long) &_etext;
--
1.7.9.5


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