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Subject[RFC PATCH v1 22/33] mm/SPARC: 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: "David S. Miller" <davem@davemloft.net>
Cc: Sam Ravnborg <sam@ravnborg.org>
---
arch/sparc/kernel/leon_smp.c | 15 +++------------
arch/sparc/mm/init_32.c | 40 ++++++----------------------------------
arch/sparc/mm/init_64.c | 25 ++++---------------------
3 files changed, 13 insertions(+), 67 deletions(-)

diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c
index 9b40c9c..6cfc1b0 100644
--- a/arch/sparc/kernel/leon_smp.c
+++ b/arch/sparc/kernel/leon_smp.c
@@ -253,24 +253,15 @@ void __init leon_smp_done(void)

/* Free unneeded trap tables */
if (!cpu_present(1)) {
- ClearPageReserved(virt_to_page(&trapbase_cpu1));
- init_page_count(virt_to_page(&trapbase_cpu1));
- free_page((unsigned long)&trapbase_cpu1);
- totalram_pages++;
+ free_reserved_page(virt_to_page(&trapbase_cpu1));
num_physpages++;
}
if (!cpu_present(2)) {
- ClearPageReserved(virt_to_page(&trapbase_cpu2));
- init_page_count(virt_to_page(&trapbase_cpu2));
- free_page((unsigned long)&trapbase_cpu2);
- totalram_pages++;
+ free_reserved_page(virt_to_page(&trapbase_cpu2));
num_physpages++;
}
if (!cpu_present(3)) {
- ClearPageReserved(virt_to_page(&trapbase_cpu3));
- init_page_count(virt_to_page(&trapbase_cpu3));
- free_page((unsigned long)&trapbase_cpu3);
- totalram_pages++;
+ free_reserved_page(virt_to_page(&trapbase_cpu3));
num_physpages++;
}
/* Ok, they are spinning and ready to go. */
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index 48e0c03..2a7b6eb 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -374,45 +374,17 @@ void __init mem_init(void)

void free_initmem (void)
{
- unsigned long addr;
- unsigned long freed;
-
- addr = (unsigned long)(&__init_begin);
- freed = (unsigned long)(&__init_end) - addr;
- for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
- struct page *p;
-
- memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
- p = virt_to_page(addr);
-
- ClearPageReserved(p);
- init_page_count(p);
- __free_page(p);
- totalram_pages++;
- num_physpages++;
- }
- printk(KERN_INFO "Freeing unused kernel memory: %ldk freed\n",
- freed >> 10);
+ num_physpages += free_reserved_area((unsigned long)(&__init_begin),
+ (unsigned long)(&__init_end),
+ POISON_FREE_INITMEM,
+ "unused kernel");
}

#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- if (start < end)
- printk(KERN_INFO "Freeing initrd memory: %ldk freed\n",
- (end - start) >> 10);
- for (; start < end; start += PAGE_SIZE) {
- struct page *p;
-
- memset((void *)start, POISON_FREE_INITMEM, PAGE_SIZE);
- p = virt_to_page(start);
-
- ClearPageReserved(p);
- init_page_count(p);
- __free_page(p);
- totalram_pages++;
- num_physpages++;
- }
+ num_physpages += free_reserved_area(start, end, POISON_FREE_INITMEM,
+ "initrd");
}
#endif

diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 1588d33..03bfd10 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2060,8 +2060,7 @@ void __init mem_init(void)
/* We subtract one to account for the mem_map_zero page
* allocated below.
*/
- totalram_pages -= 1;
- num_physpages = totalram_pages;
+ num_physpages = totalram_pages - 1;

/*
* Set up the zero page, mark it reserved, so that page count
@@ -2072,7 +2071,7 @@ void __init mem_init(void)
prom_printf("paging_init: Cannot alloc zero page.\n");
prom_halt();
}
- SetPageReserved(mem_map_zero);
+ mark_page_reserved(mem_map_zero);

codepages = (((unsigned long) _etext) - ((unsigned long) _start));
codepages = PAGE_ALIGN(codepages) >> PAGE_SHIFT;
@@ -2112,7 +2111,6 @@ void free_initmem(void)
initend = (unsigned long)(__init_end) & PAGE_MASK;
for (; addr < initend; addr += PAGE_SIZE) {
unsigned long page;
- struct page *p;

page = (addr +
((unsigned long) __va(kern_base)) -
@@ -2120,13 +2118,8 @@ void free_initmem(void)
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);

if (do_free) {
- p = virt_to_page(page);
-
- ClearPageReserved(p);
- init_page_count(p);
- __free_page(p);
+ free_reserved_page(virt_to_page(page));
num_physpages++;
- totalram_pages++;
}
}
}
@@ -2134,17 +2127,7 @@ void free_initmem(void)
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- if (start < end)
- printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
- for (; start < end; start += PAGE_SIZE) {
- struct page *p = virt_to_page(start);
-
- ClearPageReserved(p);
- init_page_count(p);
- __free_page(p);
- num_physpages++;
- totalram_pages++;
- }
+ num_physpages += free_reserved_area(start, end, 0, "initrd");
}
#endif

--
1.7.9.5


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