From 0932587328d9bd5b500a640fbaff3290c8d4cabf Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 24 Feb 2011 14:43:05 +0100 Subject: bootmem: Separate out CONFIG_NO_BOOTMEM code into nobootmem.c mm/bootmem.c contained code paths for both bootmem and no bootmem configurations. They implement about the same set of APIs in different ways and as a result bootmem.c contains massive amount of #ifdef CONFIG_NO_BOOTMEM. Separate out CONFIG_NO_BOOTMEM code into mm/nobootmem.c. As the common part is relatively small, duplicate them in nobootmem.c instead of creating a common file or ifdef'ing in bootmem.c. The followings are duplicated. * {min|max}_low_pfn, max_pfn, saved_max_pfn * free_bootmem_late() * ___alloc_bootmem() * __alloc_bootmem_low() The followings are applicable only to nobootmem and moved verbatim. * __free_pages_memory() * free_all_memory_core_early() The followings are not applicable to nobootmem and omitted in nobootmem.c. * reserve_bootmem_node() * reserve_bootmem() The rest split function bodies according to CONFIG_NO_BOOTMEM. Makefile is updated so that only either bootmem.c or nobootmem.c is built according to CONFIG_NO_BOOTMEM. This patch doesn't introduce any behavior change. -tj: Rewrote commit description. Suggested-by: Ingo Molnar Signed-off-by: Yinghai Lu Acked-by: Andrew Morton Signed-off-by: Tejun Heo --- mm/Makefile | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'mm/Makefile') diff --git a/mm/Makefile b/mm/Makefile index 2b1b575ae712..42a8326c3e3d 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -7,7 +7,7 @@ mmu-$(CONFIG_MMU) := fremap.o highmem.o madvise.o memory.o mincore.o \ mlock.o mmap.o mprotect.o mremap.o msync.o rmap.o \ vmalloc.o pagewalk.o pgtable-generic.o -obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \ +obj-y := filemap.o mempool.o oom_kill.o fadvise.o \ maccess.o page_alloc.o page-writeback.o \ readahead.o swap.o truncate.o vmscan.o shmem.o \ prio_tree.o util.o mmzone.o vmstat.o backing-dev.o \ @@ -15,6 +15,12 @@ obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \ $(mmu-y) obj-y += init-mm.o +ifdef CONFIG_NO_BOOTMEM + obj-y += nobootmem.o +else + obj-y += bootmem.o +endif + obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o obj-$(CONFIG_BOUNCE) += bounce.o -- cgit v1.2.3