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Message-Id: <1369575522-26405-14-git-send-email-jiang.liu@huawei.com>
Date: Sun, 26 May 2013 21:38:41 +0800
From: Jiang Liu <liuj97@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Jiang Liu <jiang.liu@...wei.com>,
David Rientjes <rientjes@...gle.com>,
Wen Congyang <wency@...fujitsu.com>,
Mel Gorman <mgorman@...e.de>, Minchan Kim <minchan@...nel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Michal Hocko <mhocko@...e.cz>,
James Bottomley <James.Bottomley@...senPartnership.com>,
Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
David Howells <dhowells@...hat.com>,
Mark Salter <msalter@...hat.com>,
Jianguo Wu <wujianguo@...wei.com>, linux-mm@...ck.org,
linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v8, part3 13/14] mm: concentrate modification of totalram_pages into the mm core
Concentrate code to modify totalram_pages into the mm core, so the arch
memory initialized code doesn't need to take care of it. With these
changes applied, only following functions from mm core modify global
variable totalram_pages:
free_bootmem_late(), free_all_bootmem(), free_all_bootmem_node(),
adjust_managed_page_count().
With this patch applied, it will be much more easier for us to keep
totalram_pages and zone->managed_pages in consistence.
Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
Acked-by: David Howells <dhowells@...hat.com>
---
arch/alpha/mm/init.c | 2 +-
arch/alpha/mm/numa.c | 2 +-
arch/arc/mm/init.c | 2 +-
arch/arm/mm/init.c | 3 +--
arch/arm64/mm/init.c | 2 +-
arch/avr32/mm/init.c | 2 --
arch/blackfin/mm/init.c | 2 +-
arch/c6x/mm/init.c | 2 +-
arch/cris/mm/init.c | 2 +-
arch/frv/mm/init.c | 2 +-
arch/h8300/mm/init.c | 2 +-
arch/hexagon/mm/init.c | 2 +-
arch/ia64/mm/init.c | 2 +-
arch/m32r/mm/init.c | 2 +-
arch/m68k/mm/init.c | 4 ++--
arch/metag/mm/init.c | 5 +----
arch/microblaze/mm/init.c | 2 +-
arch/mips/mm/init.c | 2 +-
arch/mips/sgi-ip27/ip27-memory.c | 2 +-
arch/mn10300/mm/init.c | 2 +-
arch/openrisc/mm/init.c | 2 +-
arch/parisc/mm/init.c | 4 ++--
arch/powerpc/mm/mem.c | 5 ++---
arch/s390/mm/init.c | 2 +-
arch/score/mm/init.c | 2 +-
arch/sh/mm/init.c | 2 +-
arch/sparc/mm/init_32.c | 3 +--
arch/sparc/mm/init_64.c | 2 +-
arch/tile/mm/init.c | 2 +-
arch/um/kernel/mem.c | 2 +-
arch/unicore32/mm/init.c | 2 +-
arch/x86/mm/init_32.c | 2 +-
arch/x86/mm/init_64.c | 2 +-
arch/xtensa/mm/init.c | 2 +-
mm/bootmem.c | 9 ++++++++-
mm/nobootmem.c | 7 ++++++-
36 files changed, 50 insertions(+), 46 deletions(-)
diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c
index 218c29c..eee47a4 100644
--- a/arch/alpha/mm/init.c
+++ b/arch/alpha/mm/init.c
@@ -309,7 +309,7 @@ void __init
mem_init(void)
{
max_mapnr = num_physpages = max_low_pfn;
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
printk_memory_info();
diff --git a/arch/alpha/mm/numa.c b/arch/alpha/mm/numa.c
index 3388504..857452c 100644
--- a/arch/alpha/mm/numa.c
+++ b/arch/alpha/mm/numa.c
@@ -334,7 +334,7 @@ void __init mem_init(void)
/*
* This will free up the bootmem, ie, slot 0 memory
*/
- totalram_pages += free_all_bootmem_node(NODE_DATA(nid));
+ free_all_bootmem_node(NODE_DATA(nid));
pfn = NODE_DATA(nid)->node_start_pfn;
for (i = 0; i < node_spanned_pages(nid); i++, pfn++)
diff --git a/arch/arc/mm/init.c b/arch/arc/mm/init.c
index f9c7077..c668a60 100644
--- a/arch/arc/mm/init.c
+++ b/arch/arc/mm/init.c
@@ -111,7 +111,7 @@ void __init mem_init(void)
high_memory = (void *)(CONFIG_LINUX_LINK_BASE + arc_mem_sz);
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
/* count all reserved pages [kernel code/data/mem_map..] */
reserved_pages = 0;
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index f223394..4ca7c1a 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -595,8 +595,7 @@ void __init mem_init(void)
/* this will put all unused low memory onto the freelists */
free_unused_memmap(&meminfo);
-
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
#ifdef CONFIG_SA1111
/* now that our DMA memory is actually so designated, we can free it */
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index a398eb9..93de98a 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -284,7 +284,7 @@ void __init mem_init(void)
free_unused_memmap();
#endif
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
reserved_pages = free_pages = 0;
diff --git a/arch/avr32/mm/init.c b/arch/avr32/mm/init.c
index b079e04..af6890f 100644
--- a/arch/avr32/mm/init.c
+++ b/arch/avr32/mm/init.c
@@ -117,8 +117,6 @@ void __init mem_init(void)
if (pgdat->node_spanned_pages != 0)
node_pages = free_all_bootmem_node(pgdat);
- totalram_pages += node_pages;
-
for (i = 0; i < node_pages; i++)
if (PageReserved(pgdat->node_mem_map + i))
reservedpages++;
diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c
index fa241f5..c73d80e 100644
--- a/arch/blackfin/mm/init.c
+++ b/arch/blackfin/mm/init.c
@@ -104,7 +104,7 @@ void __init mem_init(void)
printk(KERN_DEBUG "Kernel managed physical pages: %lu\n", num_physpages);
/* This will put all low memory onto the freelists. */
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
reservedpages = 0;
for (tmp = ARCH_PFN_OFFSET; tmp < max_mapnr; tmp++)
diff --git a/arch/c6x/mm/init.c b/arch/c6x/mm/init.c
index 7f25bef..df3714b 100644
--- a/arch/c6x/mm/init.c
+++ b/arch/c6x/mm/init.c
@@ -64,7 +64,7 @@ void __init mem_init(void)
high_memory = (void *)(memory_end & PAGE_MASK);
/* this will put all memory onto the freelists */
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
codek = (_etext - _stext) >> 10;
datak = (_end - _sdata) >> 10;
diff --git a/arch/cris/mm/init.c b/arch/cris/mm/init.c
index 8fec263..52b8b56 100644
--- a/arch/cris/mm/init.c
+++ b/arch/cris/mm/init.c
@@ -33,7 +33,7 @@ mem_init(void)
max_mapnr = num_physpages = max_low_pfn - min_low_pfn;
/* this will put all memory onto the freelists */
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
reservedpages = 0;
for (tmp = 0; tmp < max_mapnr; tmp++) {
diff --git a/arch/frv/mm/init.c b/arch/frv/mm/init.c
index 8ba9d22..3dcc888 100644
--- a/arch/frv/mm/init.c
+++ b/arch/frv/mm/init.c
@@ -123,7 +123,7 @@ void __init mem_init(void)
int codek = 0, datak = 0;
/* this will put all low memory onto the freelists */
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
#ifdef CONFIG_MMU
for (loop = 0 ; loop < npages ; loop++)
diff --git a/arch/h8300/mm/init.c b/arch/h8300/mm/init.c
index c831f1d..a506dd4 100644
--- a/arch/h8300/mm/init.c
+++ b/arch/h8300/mm/init.c
@@ -140,7 +140,7 @@ void __init mem_init(void)
max_mapnr = num_physpages = MAP_NR(high_memory);
/* this will put all low memory onto the freelists */
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
codek = (_etext - _stext) >> 10;
datak = (__bss_stop - _sdata) >> 10;
diff --git a/arch/hexagon/mm/init.c b/arch/hexagon/mm/init.c
index 2561d25..0ab5b43 100644
--- a/arch/hexagon/mm/init.c
+++ b/arch/hexagon/mm/init.c
@@ -70,7 +70,7 @@ unsigned long long kmap_generation;
void __init mem_init(void)
{
/* No idea where this is actually declared. Seems to evade LXR. */
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
num_physpages = bootmem_lastpg-ARCH_PFN_OFFSET;
printk(KERN_INFO "totalram_pages = %ld\n", totalram_pages);
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index f8a4f38..d141f7e 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -622,7 +622,7 @@ mem_init (void)
for_each_online_pgdat(pgdat)
if (pgdat->bdata->node_bootmem_map)
- totalram_pages += free_all_bootmem_node(pgdat);
+ free_all_bootmem_node(pgdat);
reserved_pages = 0;
efi_memmap_walk(count_reserved_pages, &reserved_pages);
diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
index cca87d9..a501838 100644
--- a/arch/m32r/mm/init.c
+++ b/arch/m32r/mm/init.c
@@ -158,7 +158,7 @@ void __init mem_init(void)
/* this will put all low memory onto the freelists */
for_each_online_node(nid)
- totalram_pages += free_all_bootmem_node(NODE_DATA(nid));
+ free_all_bootmem_node(NODE_DATA(nid));
reservedpages = reservedpages_count() - hole_pages;
codesize = (unsigned long) &_etext - (unsigned long)&_text;
diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c
index ab0b54c..614c60a 100644
--- a/arch/m68k/mm/init.c
+++ b/arch/m68k/mm/init.c
@@ -155,11 +155,11 @@ void __init mem_init(void)
int i;
/* this will put all memory onto the freelists */
- totalram_pages = num_physpages = 0;
+ num_physpages = 0;
for_each_online_pgdat(pgdat) {
num_physpages += pgdat->node_present_pages;
- totalram_pages += free_all_bootmem_node(pgdat);
+ free_all_bootmem_node(pgdat);
for (i = 0; i < pgdat->node_spanned_pages; i++) {
struct page *page = pgdat->node_mem_map + i;
char *addr = page_to_virt(page);
diff --git a/arch/metag/mm/init.c b/arch/metag/mm/init.c
index d7595f5..ce81d7c 100644
--- a/arch/metag/mm/init.c
+++ b/arch/metag/mm/init.c
@@ -393,14 +393,11 @@ void __init mem_init(void)
for_each_online_node(nid) {
pg_data_t *pgdat = NODE_DATA(nid);
- unsigned long node_pages = 0;
num_physpages += pgdat->node_present_pages;
if (pgdat->node_spanned_pages)
- node_pages = free_all_bootmem_node(pgdat);
-
- totalram_pages += node_pages;
+ free_all_bootmem_node(pgdat);
}
pr_info("Memory: %luk/%luk available\n",
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index d149e0e..b384cbc 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -252,7 +252,7 @@ void __init mem_init(void)
high_memory = (void *)__va(memory_start + lowmem_size - 1);
/* this will put all memory onto the freelists */
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
for_each_online_pgdat(pgdat) {
unsigned long i;
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 268f2a9..e7333f1 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -374,7 +374,7 @@ void __init mem_init(void)
#endif
high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
setup_zero_pages(); /* Setup zeroed pages. */
reservedpages = ram = 0;
diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c
index 1230f56..aecac4a 100644
--- a/arch/mips/sgi-ip27/ip27-memory.c
+++ b/arch/mips/sgi-ip27/ip27-memory.c
@@ -489,7 +489,7 @@ void __init mem_init(void)
/*
* This will free up the bootmem, ie, slot 0 memory.
*/
- totalram_pages += free_all_bootmem_node(NODE_DATA(node));
+ free_all_bootmem_node(NODE_DATA(node));
}
setup_zero_pages(); /* This comes from node 0 */
diff --git a/arch/mn10300/mm/init.c b/arch/mn10300/mm/init.c
index e19049d..7590d91 100644
--- a/arch/mn10300/mm/init.c
+++ b/arch/mn10300/mm/init.c
@@ -114,7 +114,7 @@ void __init mem_init(void)
memset(empty_zero_page, 0, PAGE_SIZE);
/* this will put all low memory onto the freelists */
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
reservedpages = 0;
for (tmp = 0; tmp < num_physpages; tmp++)
diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index c371e4a..16c1e13 100644
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -207,7 +207,7 @@ static int __init free_pages_init(void)
int reservedpages, pfn;
/* this will put all low memory onto the freelists */
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
reservedpages = 0;
for (pfn = 0; pfn < max_low_pfn; pfn++) {
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index e6ad98d..74608f7 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -593,13 +593,13 @@ void __init mem_init(void)
#ifndef CONFIG_DISCONTIGMEM
max_mapnr = page_to_pfn(virt_to_page(high_memory - 1)) + 1;
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
#else
{
int i;
for (i = 0; i < npmem_ranges; i++)
- totalram_pages += free_all_bootmem_node(NODE_DATA(i));
+ free_all_bootmem_node(NODE_DATA(i));
}
#endif
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 7f47a05..3bcfc0d 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -318,13 +318,12 @@ void __init mem_init(void)
for_each_online_node(nid) {
if (NODE_DATA(nid)->node_spanned_pages != 0) {
printk("freeing bootmem node %d\n", nid);
- totalram_pages +=
- free_all_bootmem_node(NODE_DATA(nid));
+ free_all_bootmem_node(NODE_DATA(nid));
}
}
#else
max_mapnr = max_pfn;
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
#endif
for_each_online_pgdat(pgdat) {
for (i = 0; i < pgdat->node_spanned_pages; i++) {
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index bf01d18..a2aafe1 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -144,7 +144,7 @@ void __init mem_init(void)
cmma_init();
/* this will put all low memory onto the freelists */
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
setup_zero_pages(); /* Setup zeroed pages. */
reservedpages = 0;
diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c
index 3d79ecb..c1601da 100644
--- a/arch/score/mm/init.c
+++ b/arch/score/mm/init.c
@@ -81,7 +81,7 @@ void __init mem_init(void)
unsigned long tmp, ram = 0;
high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
setup_zero_page(); /* Setup zeroed pages. */
reservedpages = 0;
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index d3af56b..fc0c8e1 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -422,7 +422,7 @@ void __init mem_init(void)
num_physpages += pgdat->node_present_pages;
if (pgdat->node_spanned_pages)
- totalram_pages += free_all_bootmem_node(pgdat);
+ free_all_bootmem_node(pgdat);
node_high_memory = (void *)__va((pgdat->node_start_pfn +
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index d5f9c02..a438abb 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -323,8 +323,7 @@ void __init mem_init(void)
max_mapnr = last_valid_pfn - pfn_base;
high_memory = __va(max_low_pfn << PAGE_SHIFT);
-
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
for (i = 0; sp_banks[i].num_bytes != 0; i++) {
unsigned long start_pfn = sp_banks[i].base_addr >> PAGE_SHIFT;
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index a54cdcd..ee6deda 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2054,7 +2054,7 @@ void __init mem_init(void)
high_memory = __va(last_valid_pfn << PAGE_SHIFT);
register_page_bootmem_info();
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
/* We subtract one to account for the mem_map_zero page
* allocated below.
diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
index ccfeb3f..45ce26d 100644
--- a/arch/tile/mm/init.c
+++ b/arch/tile/mm/init.c
@@ -846,7 +846,7 @@ void __init mem_init(void)
set_max_mapnr_init();
/* this will put all bootmem onto the freelists */
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
#ifndef CONFIG_64BIT
/* count all remaining LOWMEM and give all HIGHMEM to page allocator */
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 8ff0b7a..b0c7630 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -65,7 +65,7 @@ void __init mem_init(void)
uml_reserved = brk_end;
/* this will put all low memory onto the freelists */
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
max_low_pfn = totalram_pages;
#ifdef CONFIG_HIGHMEM
setup_highmem(end_iomem, highmem);
diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c
index df9b8ab..7d1356c 100644
--- a/arch/unicore32/mm/init.c
+++ b/arch/unicore32/mm/init.c
@@ -392,7 +392,7 @@ void __init mem_init(void)
free_unused_memmap(&meminfo);
/* this will put all unused low memory onto the freelists */
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
reserved_pages = free_pages = 0;
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 3ac7e31..9fa46ba 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -759,7 +759,7 @@ void __init mem_init(void)
set_highmem_pages_init();
/* this will put all low memory onto the freelists */
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
reservedpages = 0;
for (tmp = 0; tmp < max_low_pfn; tmp++)
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 3bdf32b..7d27958 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1054,7 +1054,7 @@ void __init mem_init(void)
register_page_bootmem_info();
/* this will put all memory onto the freelists */
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
absent_pages = absent_pages_in_range(0, max_pfn);
reservedpages = max_pfn - totalram_pages - absent_pages;
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 026d29b..663c161 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -184,7 +184,7 @@ void __init mem_init(void)
#error HIGHGMEM not implemented in init.c
#endif
- totalram_pages += free_all_bootmem();
+ free_all_bootmem();
reservedpages = ram = 0;
for (tmp = 0; tmp < max_mapnr; tmp++) {
diff --git a/mm/bootmem.c b/mm/bootmem.c
index eb792323..58609bb 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -271,9 +271,14 @@ void __init reset_all_zones_managed_pages(void)
*/
unsigned long __init free_all_bootmem_node(pg_data_t *pgdat)
{
+ unsigned long pages;
+
register_page_bootmem_info_node(pgdat);
reset_node_managed_pages(pgdat);
- return free_all_bootmem_core(pgdat->bdata);
+ pages = free_all_bootmem_core(pgdat->bdata);
+ totalram_pages += pages;
+
+ return pages;
}
/**
@@ -291,6 +296,8 @@ unsigned long __init free_all_bootmem(void)
list_for_each_entry(bdata, &bdata_list, list)
total_pages += free_all_bootmem_core(bdata);
+ totalram_pages += total_pages;
+
return total_pages;
}
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index 0ae8d91..61107cf 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -165,6 +165,8 @@ void __init reset_all_zones_managed_pages(void)
*/
unsigned long __init free_all_bootmem(void)
{
+ unsigned long pages;
+
reset_all_zones_managed_pages();
/*
@@ -172,7 +174,10 @@ unsigned long __init free_all_bootmem(void)
* because in some case like Node0 doesn't have RAM installed
* low ram will be on Node1
*/
- return free_low_memory_core_early();
+ pages = free_low_memory_core_early();
+ totalram_pages += pages;
+
+ return pages;
}
/**
--
1.8.1.2
--
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