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>

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index ad9a9f3..611f217 100644 (file)
--- 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 800aac3..f497ca7 100644 (file)
--- 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");
        }
 }