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authorJiang Liu <liuj97@gmail.com>2013-04-29 15:06:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 15:54:29 -0700
commit83db0384a92ac4e52dccd275bc1a58dca86d629d (patch)
treeb09b3200b227acac7f5be12d58a9878a40be3e8e
parentf3beeb4a51d3aa16571e6c3774b929209e9956bf (diff)
mm/ARM: use common help functions to free reserved pages
Use common help functions to free reserved pages. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/arm/mm/init.c48
-rw-r--r--arch/arm64/mm/init.c26
2 files changed, 18 insertions, 56 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index ad9a9f3f032..611f21772fa 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -427,24 +427,6 @@ void __init bootmem_init(void)
max_pfn = max_high - PHYS_PFN_OFFSET;
}
-static inline int free_area(unsigned long pfn, unsigned long end, char *s)
-{
- unsigned int pages = 0, size = (end - pfn) << (PAGE_SHIFT - 10);
-
- for (; pfn < end; pfn++) {
- struct page *page = pfn_to_page(pfn);
- ClearPageReserved(page);
- init_page_count(page);
- __free_page(page);
- pages++;
- }
-
- if (size && s)
- printk(KERN_INFO "Freeing %s memory: %dK\n", s, size);
-
- return pages;
-}
-
/*
* Poison init memory with an undefined instruction (ARM) or a branch to an
* undefined instruction (Thumb).
@@ -537,6 +519,16 @@ static void __init free_unused_memmap(struct meminfo *mi)
#endif
}
+#ifdef CONFIG_HIGHMEM
+static inline void free_area_high(unsigned long pfn, unsigned long end)
+{
+ for (; pfn < end; pfn++) {
+ __free_reserved_page(pfn_to_page(pfn));
+ totalhigh_pages++;
+ }
+}
+#endif
+
static void __init free_highpages(void)
{
#ifdef CONFIG_HIGHMEM
@@ -572,8 +564,7 @@ static void __init free_highpages(void)
if (res_end > end)
res_end = end;
if (res_start != start)
- totalhigh_pages += free_area(start, res_start,
- NULL);
+ free_area_high(start, res_start);
start = res_end;
if (start == end)
break;
@@ -581,7 +572,7 @@ static void __init free_highpages(void)
/* And now free anything which remains */
if (start < end)
- totalhigh_pages += free_area(start, end, NULL);
+ free_area_high(start, end);
}
totalram_pages += totalhigh_pages;
#endif
@@ -612,8 +603,7 @@ void __init mem_init(void)
#ifdef CONFIG_SA1111
/* now that our DMA memory is actually so designated, we can free it */
- totalram_pages += free_area(PHYS_PFN_OFFSET,
- __phys_to_pfn(__pa(swapper_pg_dir)), NULL);
+ free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL);
#endif
free_highpages();
@@ -741,16 +731,12 @@ void free_initmem(void)
extern char __tcm_start, __tcm_end;
poison_init_mem(&__tcm_start, &__tcm_end - &__tcm_start);
- totalram_pages += free_area(__phys_to_pfn(__pa(&__tcm_start)),
- __phys_to_pfn(__pa(&__tcm_end)),
- "TCM link");
+ free_reserved_area(&__tcm_start, &__tcm_end, 0, "TCM link");
#endif
poison_init_mem(__init_begin, __init_end - __init_begin);
if (!machine_is_integrator() && !machine_is_cintegrator())
- totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)),
- __phys_to_pfn(__pa(__init_end)),
- "init");
+ free_initmem_default(0);
}
#ifdef CONFIG_BLK_DEV_INITRD
@@ -761,9 +747,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
{
if (!keep_initrd) {
poison_init_mem((void *)start, PAGE_ALIGN(end) - start);
- totalram_pages += free_area(__phys_to_pfn(__pa(start)),
- __phys_to_pfn(__pa(end)),
- "initrd");
+ free_reserved_area(start, end, 0, "initrd");
}
}
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 800aac306a0..f497ca77925 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -197,24 +197,6 @@ void __init bootmem_init(void)
max_pfn = max_low_pfn = max;
}
-static inline int free_area(unsigned long pfn, unsigned long end, char *s)
-{
- unsigned int pages = 0, size = (end - pfn) << (PAGE_SHIFT - 10);
-
- for (; pfn < end; pfn++) {
- struct page *page = pfn_to_page(pfn);
- ClearPageReserved(page);
- init_page_count(page);
- __free_page(page);
- pages++;
- }
-
- if (size && s)
- pr_info("Freeing %s memory: %dK\n", s, size);
-
- return pages;
-}
-
/*
* Poison init memory with an undefined instruction (0x0).
*/
@@ -405,9 +387,7 @@ void __init mem_init(void)
void free_initmem(void)
{
poison_init_mem(__init_begin, __init_end - __init_begin);
- totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)),
- __phys_to_pfn(__pa(__init_end)),
- "init");
+ free_initmem_default(0);
}
#ifdef CONFIG_BLK_DEV_INITRD
@@ -418,9 +398,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
{
if (!keep_initrd) {
poison_init_mem((void *)start, PAGE_ALIGN(end) - start);
- totalram_pages += free_area(__phys_to_pfn(__pa(start)),
- __phys_to_pfn(__pa(end)),
- "initrd");
+ free_reserved_area(start, end, 0, "initrd");
}
}