BMC/Intel-BMC/linux.git/arch/unicore32/mm/ioremap.c, branch dev

arch/unicore32/mm/ioremap.c: return NULL on invalid pfn

2014-06-04T23:53:53+00:00

__uc32_ioremap_pfn_caller() should return NULL when the pfn is found to be invalid. From a recommendation by Guan Xuetao. Cc: Guan Xuetao Cc: Fabian Frederick Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

arch/unicore32/mm/ioremap.c: convert printk/warn_on to warn()

2014-06-04T23:53:53+00:00

Coalesce formats. [akpm@linux-foundation.org: undo crazy long line] Signed-off-by: Fabian Frederick Cc: Guan Xuetao Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm, vmalloc: change iterating a vmlist to find_vm_area()

2013-04-29T22:54:33+00:00

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 Signed-off-by: Joonsoo Kim Acked-by: Guan Xuetao Acked-by: Ingo Molnar Acked-by: Chris Metcalf Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Atsushi Kumagai Cc: Dave Anderson Cc: Eric Biederman Cc: Vivek Goyal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

unicore32 core architecture: mm related: generic codes

2011-03-17T01:19:08+00:00

This patch includes generic codes for memory management. Signed-off-by: Guan Xuetao Reviewed-by: Arnd Bergmann