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Date: Sun, 17 Mar 2013 01:03:33 +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>,
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
Subject: [PATCH v2, part3 12/12] mm: concentrate adjusting of totalram_pages
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().
Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
---
arch/alpha/mm/init.c | 2 +-
arch/alpha/mm/numa.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 | 3 +--
arch/ia64/mm/init.c | 2 +-
arch/m32r/mm/init.c | 2 +-
arch/m68k/mm/init.c | 4 ++--
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 | 10 ++++------
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 ++++++-
34 files changed, 51 insertions(+), 47 deletions(-)
diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c
index 9930837..ca07a97 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/arm/mm/init.c b/arch/arm/mm/init.c
index e922456..5925861 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 b87bdb8..0f2cf5d 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 871f98a..7e8d55a 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 e64286b..1cc8607 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 ce39b48..2c51474 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 a421948..4215822 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 488e2a3..22fd869 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 69ffcfd..c048d06e 100644
--- a/arch/hexagon/mm/init.c
+++ b/arch/hexagon/mm/init.c
@@ -69,8 +69,7 @@ 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; /* seriously, what? */
printk(KERN_INFO "totalram_pages = %ld\n", totalram_pages);
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 941568a..b5b71e8 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -623,7 +623,7 @@ 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 58ea4d6..c421c31 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 291ca0f..0450989 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/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 6b8711d..3a434fd 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 2e446a7..c1d7b9f 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -373,7 +373,7 @@ 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 b5ef807..4042e06 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 5a8ace6..d7312aa 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 3b9f017..71d6b40 100644
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -196,7 +196,7 @@ 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 27f3f88..1fe9d841 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 3974615..0e154a9 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -322,13 +322,12 @@ 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 554b3e1..4a72888 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -134,7 +134,7 @@ 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 1592aad..579fc4e 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 31294f1..aecd913 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 af472cf..e96afed 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 8f1715ffd..fde310e 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2042,15 +2042,13 @@ void __init mem_init(void)
{
int i;
for_each_online_node(i) {
- if (NODE_DATA(i)->node_spanned_pages != 0) {
- totalram_pages +=
- free_all_bootmem_node(NODE_DATA(i));
- }
+ if (NODE_DATA(i)->node_spanned_pages != 0)
+ free_all_bootmem_node(NODE_DATA(i));
}
- totalram_pages += free_low_memory_core_early(MAX_NUMNODES);
+ free_low_memory_core_early(MAX_NUMNODES);
}
#else
- totalram_pages = free_all_bootmem();
+ free_all_bootmem();
#endif
/* We subtract one to account for the mem_map_zero page
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 1e84189..a7dc6c1 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 5614b05..119b9e8 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 4b3b659..857032c 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -735,7 +735,7 @@ 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 5e19126..f524138 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1039,7 +1039,7 @@ 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 6f70647..dc6e009 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 7f71b31..a054fc4 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 3db0f67..915b0ea 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -180,6 +180,8 @@ unsigned long __init free_all_bootmem_node(pg_data_t *pgdat)
*/
unsigned long __init free_all_bootmem(void)
{
+ unsigned long pages;
+
reset_all_zones_managed_pages();
/*
@@ -187,7 +189,10 @@ 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(MAX_NUMNODES);
+ pages = free_low_memory_core_early(MAX_NUMNODES);
+ totalram_pages += pages;
+
+ return pages;
}
/**
--
1.7.9.5
--
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