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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2006-03-27 01:16:02 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 08:44:48 -0800
commit95144c788dc01b6a0ff2c9c2222e37ffdab358b8 (patch)
tree9f7f186575bb717de39cedaf42bf02a94c11b664
parentae0f15fb91274e67d78836d38c99ec363df33073 (diff)
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[PATCH] uninline zone helpers
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>
-rw-r--r--include/linux/mmzone.h38
-rw-r--r--mm/Makefile2
-rw-r--r--mm/mmzone.c50
3 files changed, 54 insertions, 36 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 0d12c3c..b5c2112 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -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
diff --git a/mm/Makefile b/mm/Makefile
index f10c753..0b8f73f 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -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
diff --git a/mm/mmzone.c b/mm/mmzone.c
new file mode 100644
index 0000000..b022370
--- /dev/null
+++ b/mm/mmzone.c
@@ -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);
+