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Date: Sun, 10 Mar 2013 14:27:01 +0800
From: Jiang Liu <liuj97@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
David Rientjes <rientjes@...gle.com>
Cc: Jiang Liu <jiang.liu@...wei.com>,
Wen Congyang <wency@...fujitsu.com>,
Maciej Rutecki <maciej.rutecki@...il.com>,
Chris Clayton <chris2553@...glemail.com>,
"Rafael J . Wysocki" <rjw@...k.pl>, Mel Gorman <mgorman@...e.de>,
Minchan Kim <minchan@...nel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Michal Hocko <mhocko@...e.cz>,
Jianguo Wu <wujianguo@...wei.com>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Anatolij Gustschin <agust@...x.de>
Subject: [PATCH v2, part1 18/29] mm/ppc: use common help functions to free reserved pages
Use common help functions to free reserved pages.
Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Anatolij Gustschin <agust@...x.de>
---
arch/powerpc/kernel/crash_dump.c | 5 +----
arch/powerpc/kernel/fadump.c | 5 +----
arch/powerpc/kernel/kvm.c | 7 +------
arch/powerpc/mm/mem.c | 29 ++------------------------
arch/powerpc/platforms/512x/mpc512x_shared.c | 5 +----
5 files changed, 6 insertions(+), 45 deletions(-)
diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index b3ba516..9ec3fe1 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -150,10 +150,7 @@ void crash_free_reserved_phys_range(unsigned long begin, unsigned long end)
if (addr <= rtas_end && ((addr + PAGE_SIZE) > rtas_start))
continue;
- ClearPageReserved(pfn_to_page(addr >> PAGE_SHIFT));
- init_page_count(pfn_to_page(addr >> PAGE_SHIFT));
- free_page((unsigned long)__va(addr));
- totalram_pages++;
+ free_reserved_page(pfn_to_page(addr >> PAGE_SHIFT));
}
}
#endif
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index 06c8202..2230fd0 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -1045,10 +1045,7 @@ static void fadump_release_memory(unsigned long begin, unsigned long end)
if (addr <= ra_end && ((addr + PAGE_SIZE) > ra_start))
continue;
- ClearPageReserved(pfn_to_page(addr >> PAGE_SHIFT));
- init_page_count(pfn_to_page(addr >> PAGE_SHIFT));
- free_page((unsigned long)__va(addr));
- totalram_pages++;
+ free_reserved_page(pfn_to_page(addr >> PAGE_SHIFT));
}
}
diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c
index a61b133..6782221 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -756,12 +756,7 @@ static __init void kvm_free_tmp(void)
end = (ulong)&kvm_tmp[ARRAY_SIZE(kvm_tmp)] & PAGE_MASK;
/* Free the tmp space we don't need */
- for (; start < end; start += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(start));
- init_page_count(virt_to_page(start));
- free_page(start);
- totalram_pages++;
- }
+ free_reserved_area(start, end, 0, NULL);
}
static int __init kvm_guest_init(void)
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index f1f7409..c756713 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -405,39 +405,14 @@ void __init mem_init(void)
void free_initmem(void)
{
- unsigned long addr;
-
ppc_md.progress = ppc_printk_progress;
-
- 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);
+ free_initmem_default(POISON_FREE_INITMEM);
}
#ifdef CONFIG_BLK_DEV_INITRD
void __init free_initrd_mem(unsigned long start, unsigned long end)
{
- if (start >= end)
- return;
-
- start = _ALIGN_DOWN(start, PAGE_SIZE);
- end = _ALIGN_UP(end, PAGE_SIZE);
- pr_info("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
-
- for (; start < end; start += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(start));
- init_page_count(virt_to_page(start));
- free_page(start);
- totalram_pages++;
- }
+ free_reserved_area(start, end, 0, "initrd");
}
#endif
diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c
index d30235b..db6ac38 100644
--- a/arch/powerpc/platforms/512x/mpc512x_shared.c
+++ b/arch/powerpc/platforms/512x/mpc512x_shared.c
@@ -172,12 +172,9 @@ static struct fsl_diu_shared_fb __attribute__ ((__aligned__(8))) diu_shared_fb;
static inline void mpc512x_free_bootmem(struct page *page)
{
- __ClearPageReserved(page);
BUG_ON(PageTail(page));
BUG_ON(atomic_read(&page->_count) > 1);
- atomic_set(&page->_count, 1);
- __free_page(page);
- totalram_pages++;
+ free_reserved_page(page);
}
void mpc512x_release_bootmem(void)
--
1.7.9.5
--
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