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authorDave Carroll <dcarroll@astekcorp.com>2011-06-18 07:36:39 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-06-30 15:28:05 +1000
commit2773fcc8c48b947c997ff345f3e453917883cdb5 (patch)
treed0b526f25efa465236bce0ab31c3e89dc79a1462 /arch/powerpc
parent6da49a292534d31ca391928ea97f8225774dc1e0 (diff)
powerpc: Move free_initmem to common code
The free_initmem function is basically duplicated in mm/init_32, and init_64, and is moved to the common 32/64-bit mm/mem.c. All other sections except init were removed in v2.6.15 by 6c45ab992e4299c869fb26427944a8f8ea177024 (powerpc: Remove section free() and linker script bits), and therefore the bulk of the executed code is identical. This patch also removes updating ppc_md.progress to NULL in the powermac late_initcall. Suggested-by: Milton Miller <miltonm@bga.com> Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Dave Carroll <dcarroll@astekcorp.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/mm/init_32.c32
-rw-r--r--arch/powerpc/mm/init_64.c16
-rw-r--r--arch/powerpc/mm/mem.c19
-rw-r--r--arch/powerpc/platforms/powermac/setup.c3
4 files changed, 19 insertions, 51 deletions
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 5de0f254dbb..c77fef56dad 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -191,38 +191,6 @@ void __init *early_get_page(void)
return __va(memblock_alloc(PAGE_SIZE, PAGE_SIZE));
}
-/* Free up now-unused memory */
-static void free_sec(unsigned long start, unsigned long end, const char *name)
-{
- unsigned long cnt = 0;
-
- while (start < end) {
- ClearPageReserved(virt_to_page(start));
- init_page_count(virt_to_page(start));
- free_page(start);
- cnt++;
- start += PAGE_SIZE;
- }
- if (cnt) {
- printk(" %ldk %s", cnt << (PAGE_SHIFT - 10), name);
- totalram_pages += cnt;
- }
-}
-
-void free_initmem(void)
-{
-#define FREESEC(TYPE) \
- free_sec((unsigned long)(&__ ## TYPE ## _begin), \
- (unsigned long)(&__ ## TYPE ## _end), \
- #TYPE);
-
- printk ("Freeing unused kernel memory:");
- FREESEC(init);
- printk("\n");
- ppc_md.progress = NULL;
-#undef FREESEC
-}
-
#ifdef CONFIG_8xx /* No 8xx specific .c file to put that in ... */
void setup_initial_memory_limit(phys_addr_t first_memblock_base,
phys_addr_t first_memblock_size)
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index f6dbb4c20e6..e94b57fb79a 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -83,22 +83,6 @@ EXPORT_SYMBOL_GPL(memstart_addr);
phys_addr_t kernstart_addr;
EXPORT_SYMBOL_GPL(kernstart_addr);
-void free_initmem(void)
-{
- unsigned long addr;
-
- addr = (unsigned long)__init_begin;
- for (; addr < (unsigned long)__init_end; addr += PAGE_SIZE) {
- memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
- ClearPageReserved(virt_to_page(addr));
- init_page_count(virt_to_page(addr));
- free_page(addr);
- totalram_pages++;
- }
- printk ("Freeing unused kernel memory: %luk freed\n",
- ((unsigned long)__init_end - (unsigned long)__init_begin) >> 10);
-}
-
static void pgd_ctor(void *addr)
{
memset(addr, 0, PGD_TABLE_SIZE);
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 89cbfef5a7d..e9379ce6f3b 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -383,6 +383,25 @@ void __init mem_init(void)
mem_init_done = 1;
}
+void free_initmem(void)
+{
+ unsigned long addr;
+
+ ppc_md.progress = NULL;
+
+ addr = (unsigned long)__init_begin;
+ for (; addr < (unsigned long)__init_end; addr += PAGE_SIZE) {
+ memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
+ ClearPageReserved(virt_to_page(addr));
+ init_page_count(virt_to_page(addr));
+ free_page(addr);
+ totalram_pages++;
+ }
+ pr_info("Freeing unused kernel memory: %luk freed\n",
+ ((unsigned long)__init_end -
+ (unsigned long)__init_begin) >> 10);
+}
+
#ifdef CONFIG_BLK_DEV_INITRD
void __init free_initrd_mem(unsigned long start, unsigned long end)
{
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index aa45281bd29..a028f08309d 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -355,9 +355,6 @@ static int initializing = 1;
static int pmac_late_init(void)
{
initializing = 0;
- /* this is udbg (which is __init) and we can later use it during
- * cpu hotplug (in smp_core99_kick_cpu) */
- ppc_md.progress = NULL;
return 0;
}
machine_late_initcall(powermac, pmac_late_init);