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[PATCH] uninline zone helpers

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Helper functions for for_each_online_pgdat/for_each_zone look too big to be
inlined.  Speed of these helper macro itself is not very important.  (inner
loops are tend to do more work than this)

This patch make helper function to be out-of-lined.

	inline		out-of-line
.text   005c0680        005bf6a0

005c0680 - 005bf6a0 = FE0 = 4Kbytes.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
KAMEZAWA Hiroyuki 2006-03-27 01:16:02 -08:00 committed by Linus Torvalds
parent ae0f15fb91
commit 95144c788d
3 changed files with 54 additions and 36 deletions
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38
include/linux/mmzone.h
View file

@ -418,20 +418,9 @@ extern struct pglist_data contig_page_data;
#endif /* !CONFIG_NEED_MULTIPLE_NODES */
static inline struct pglist_data *first_online_pgdat(void)
{
return NODE_DATA(first_online_node);
}
static inline struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
{
int nid = next_online_node(pgdat->node_id);
if (nid == MAX_NUMNODES)
return NULL;
return NODE_DATA(nid);
}
extern struct pglist_data *first_online_pgdat(void);
extern struct pglist_data *next_online_pgdat(struct pglist_data *pgdat);
extern struct zone *next_zone(struct zone *zone);
/**
* for_each_pgdat - helper macro to iterate over all nodes
@ -441,27 +430,6 @@ static inline struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
for (pgdat = first_online_pgdat(); \
pgdat; \
pgdat = next_online_pgdat(pgdat))
/*
* next_zone - helper magic for for_each_zone()
* Thanks to William Lee Irwin III for this piece of ingenuity.
*/
static inline struct zone *next_zone(struct zone *zone)
{
pg_data_t *pgdat = zone->zone_pgdat;
if (zone < pgdat->node_zones + MAX_NR_ZONES - 1)
zone++;
else {
pgdat = next_online_pgdat(pgdat);
if (pgdat)
zone = pgdat->node_zones;
else
zone = NULL;
}
return zone;
}
/**
* for_each_zone - helper macro to iterate over all memory zones
* @zone - pointer to struct zone variable

2
mm/Makefile
View file

@ -10,7 +10,7 @@ mmu-$(CONFIG_MMU) := fremap.o highmem.o madvise.o memory.o mincore.o \
obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \
page_alloc.o page-writeback.o pdflush.o \
readahead.o swap.o truncate.o vmscan.o \
prio_tree.o util.o $(mmu-y)
prio_tree.o util.o mmzone.o $(mmu-y)
obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o thrash.o
obj-$(CONFIG_HUGETLBFS) += hugetlb.o

50
mm/mmzone.c Normal file
View file

@ -0,0 +1,50 @@
/*
* linux/mm/mmzone.c
*
* management codes for pgdats and zones.
*/
#include <linux/config.h>
#include <linux/stddef.h>
#include <linux/mmzone.h>
#include <linux/module.h>
struct pglist_data *first_online_pgdat(void)
{
return NODE_DATA(first_online_node);
}
EXPORT_SYMBOL(first_online_pgdat);
struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
{
int nid = next_online_node(pgdat->node_id);
if (nid == MAX_NUMNODES)
return NULL;
return NODE_DATA(nid);
}
EXPORT_SYMBOL(next_online_pgdat);
/*
* next_zone - helper magic for for_each_zone()
*/
struct zone *next_zone(struct zone *zone)
{
pg_data_t *pgdat = zone->zone_pgdat;
if (zone < pgdat->node_zones + MAX_NR_ZONES - 1)
zone++;
else {
pgdat = next_online_pgdat(pgdat);
if (pgdat)
zone = pgdat->node_zones;
else
zone = NULL;
}
return zone;
}
EXPORT_SYMBOL(next_zone);