Joonsoo Kim ef93247325 mm, vmalloc: change iterating a vmlist to find_vm_area() ... This patchset removes vm_struct list management after initializing vmalloc. Adding and removing an entry to vmlist is linear time complexity, so it is inefficient. If we maintain this list, overall time complexity of adding and removing area to vmalloc space is O(N), although we use rbtree for finding vacant place and it's time complexity is just O(logN). And vmlist and vmlist_lock is used many places of outside of vmalloc.c. It is preferable that we hide this raw data structure and provide well-defined function for supporting them, because it makes that they cannot mistake when manipulating theses structure and it makes us easily maintain vmalloc layer. For kexec and makedumpfile, I export vmap_area_list, instead of vmlist. This comes from Atsushi's recommendation. For more information, please refer below link. https://lkml.org/lkml/2012/12/6/184 This patch: The purpose of iterating a vmlist is finding vm area with specific virtual address. find_vm_area() is provided for this purpose and more efficient, because it uses a rbtree. So change it. Signed-off-by: Joonsoo Kim <js1304@gmail.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp> Cc: Dave Anderson <anderson@redhat.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-04-29 15:54:33 -07:00
..
alignment.c	Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]	2012-03-28 18:30:03 +01:00
cache-ucv2.S	unicore32 core architecture: mm related: consistent device DMA handling	2011-03-17 09:19:09 +08:00
dma-swiotlb.c	Unicore32: adapt for dma_map_ops changes	2012-03-28 16:36:39 +02:00
extable.c	unicore32 core architecture: mm related: fault handling	2011-03-17 09:19:09 +08:00
fault.c	unicore32/mm/fault.c: Port OOM changes to do_pf	2012-11-09 17:30:08 +08:00
flush.c	Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]	2012-03-28 18:30:03 +01:00
init.c	mm/unicore32: use common help functions to free reserved pages	2013-04-29 15:54:31 -07:00
ioremap.c	mm, vmalloc: change iterating a vmlist to find_vm_area()	2013-04-29 15:54:33 -07:00
Kconfig	unicore32 core architecture: mm related: generic codes	2011-03-17 09:19:08 +08:00
Makefile	unicore32: replace unicore32-specific iomap functions with generic lib implementation	2011-03-17 09:19:21 +08:00
mm.h	Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]	2012-03-28 18:30:03 +01:00
mmu.c	memblock: Fix include breakages caused by 24aa07882b	2011-12-08 10:22:06 -08:00
pgd.c	unicore32 upgrade to v2.6.38-rc5: add one more paramter for pte_alloc_map call	2011-03-17 09:19:18 +08:00
proc-macros.S	unicore32 core architecture: processor and system headers	2011-03-17 09:19:06 +08:00
proc-syms.c
proc-ucv2.S	unicore32 core architecture: processor and system headers	2011-03-17 09:19:06 +08:00
tlb-ucv2.S	unicore32 core architecture: mm related: consistent device DMA handling	2011-03-17 09:19:09 +08:00