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authorTejun Heo <tj@kernel.org>2009-02-24 11:57:20 +0900
committerTejun Heo <tj@kernel.org>2009-02-24 11:57:20 +0900
commitc132937556f56ee4b831ef4b23f1846e05fde102 (patch)
tree0f93037ff2ebbdc321ebd0bbfc4752823c8d6a0e /include/linux/bootmem.h
parentcb83b42e23bd6c4bf91793a320fbe83787c13596 (diff)
downloadlwn-c132937556f56ee4b831ef4b23f1846e05fde102.tar.gz
lwn-c132937556f56ee4b831ef4b23f1846e05fde102.zip
bootmem: clean up arch-specific bootmem wrapping
Impact: cleaner and consistent bootmem wrapping By setting CONFIG_HAVE_ARCH_BOOTMEM_NODE, archs can define arch-specific wrappers for bootmem allocation. However, this is done a bit strangely in that only the high level convenience macros can be changed while lower level, but still exported, interface functions can't be wrapped. This not only is messy but also leads to strange situation where alloc_bootmem() does what the arch wants it to do but the equivalent __alloc_bootmem() call doesn't although they should be able to be used interchangeably. This patch updates bootmem such that archs can override / wrap the backend function - alloc_bootmem_core() instead of the highlevel interface functions to allow simpler and consistent wrapping. Also, HAVE_ARCH_BOOTMEM_NODE is renamed to HAVE_ARCH_BOOTMEM. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Johannes Weiner <hannes@saeurebad.de>
Diffstat (limited to 'include/linux/bootmem.h')
-rw-r--r--include/linux/bootmem.h10
1 files changed, 4 insertions, 6 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 95837bfb5256..3a87f93081ed 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -69,10 +69,9 @@ extern int reserve_bootmem_node(pg_data_t *pgdat,
unsigned long physaddr,
unsigned long size,
int flags);
-#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
-extern int reserve_bootmem(unsigned long addr, unsigned long size, int flags);
-#endif
-
+extern int reserve_bootmem(unsigned long addr,
+ unsigned long size,
+ int flags);
extern void *__alloc_bootmem_nopanic(unsigned long size,
unsigned long align,
unsigned long goal);
@@ -94,7 +93,7 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
unsigned long size,
unsigned long align,
unsigned long goal);
-#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
+
#define alloc_bootmem(x) \
__alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_nopanic(x) \
@@ -113,7 +112,6 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
__alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_low_pages_node(pgdat, x) \
__alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
-#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
extern int reserve_bootmem_generic(unsigned long addr, unsigned long size,
int flags);