BMC/Intel-BMC/linux.git/mm/sparse.c, branch dev-4.7

mm: convert printk(KERN_ to pr_

2016-03-17T22:09:34+00:00

Most of the mm subsystem uses pr_ so make it consistent. Miscellanea: - Realign arguments - Add missing newline to format - kmemleak-test.c has a "kmemleak: " prefix added to the "Kmemleak testing" logging message via pr_fmt Signed-off-by: Joe Perches Acked-by: Tejun Heo [percpu] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: coalesce split strings

2016-03-17T22:09:34+00:00

Kernel style prefers a single string over split strings when the string is 'user-visible'. Miscellanea: - Add a missing newline - Realign arguments Signed-off-by: Joe Perches Acked-by: Tejun Heo [percpu] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

x86, mm: introduce vmem_altmap to augment vmemmap_populate()

2016-01-16T01:56:32+00:00

In support of providing struct page for large persistent memory capacities, use struct vmem_altmap to change the default policy for allocating memory for the memmap array. The default vmemmap_populate() allocates page table storage area from the page allocator. Given persistent memory capacities relative to DRAM it may not be feasible to store the memmap in 'System Memory'. Instead vmem_altmap represents pre-allocated "device pages" to satisfy vmemmap_alloc_block_buf() requests. Signed-off-by: Dan Williams Reported-by: kbuild test robot Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Dave Hansen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: use macros from compiler.h instead of attribute((...))

2014-04-07T23:35:54+00:00

To increase compiler portability there is which provides convenience macros for various gcc constructs. Eg: __weak for __attribute__((weak)). I've replaced all instances of gcc attributes with the right macro in the memory management (/mm) subsystem. [akpm@linux-foundation.org: while-we're-there consistency tweaks] Signed-off-by: Gideon Israel Dsouza Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sparse: fix comment

2014-04-02T07:16:17+00:00

retmain -> remain Signed-off-by: Li Zhong Signed-off-by: Jiri Kosina

mm/sparse: use memblock apis for early memory allocations

2014-01-22T00:19:47+00:00

Switch to memblock interfaces for early memory allocator instead of bootmem allocator. No functional change in beahvior than what it is in current code from bootmem users points of view. Archs already converted to NO_BOOTMEM now directly use memblock interfaces instead of bootmem wrappers build on top of memblock. And the archs which still uses bootmem, these new apis just fallback to exiting bootmem APIs. Signed-off-by: Santosh Shilimkar Cc: "Rafael J. Wysocki" Cc: Arnd Bergmann Cc: Christoph Lameter Cc: Greg Kroah-Hartman Cc: Grygorii Strashko Cc: H. Peter Anvin Cc: Johannes Weiner Cc: KAMEZAWA Hiroyuki Cc: Konrad Rzeszutek Wilk Cc: Michal Hocko Cc: Paul Walmsley Cc: Pavel Machek Cc: Russell King Cc: Tejun Heo Cc: Tony Lindgren Cc: Yinghai Lu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm/sparsemem: fix a bug in free_map_bootmem when CONFIG_SPARSEMEM_VMEMMAP

2013-11-13T03:09:06+00:00

We pass the number of pages which hold page structs of a memory section to free_map_bootmem(). This is right when !CONFIG_SPARSEMEM_VMEMMAP but wrong when CONFIG_SPARSEMEM_VMEMMAP. When CONFIG_SPARSEMEM_VMEMMAP, we should pass the number of pages of a memory section to free_map_bootmem. So the fix is removing the nr_pages parameter. When CONFIG_SPARSEMEM_VMEMMAP, we directly use the prefined marco PAGES_PER_SECTION in free_map_bootmem. When !CONFIG_SPARSEMEM_VMEMMAP, we calculate page numbers needed to hold the page structs for a memory section and use the value in free_map_bootmem(). This was found by reading the code. And I have no machine that support memory hot-remove to test the bug now. Signed-off-by: Zhang Yanfei Reviewed-by: Wanpeng Li Cc: Wen Congyang Cc: Tang Chen Cc: Toshi Kani Cc: Yasuaki Ishimatsu Cc: Yinghai Lu Cc: Yasunori Goto Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm/sparsemem: use PAGES_PER_SECTION to remove redundant nr_pages parameter

2013-11-13T03:09:06+00:00

For below functions, - sparse_add_one_section() - kmalloc_section_memmap() - __kmalloc_section_memmap() - __kfree_section_memmap() they are always invoked to operate on one memory section, so it is redundant to always pass a nr_pages parameter, which is the page numbers in one section. So we can directly use predefined macro PAGES_PER_SECTION instead of passing the parameter. Signed-off-by: Zhang Yanfei Cc: Wen Congyang Cc: Tang Chen Cc: Toshi Kani Cc: Yasuaki Ishimatsu Cc: Yinghai Lu Cc: Yasunori Goto Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm/sparse: introduce alloc_usemap_and_memmap

2013-09-11T22:58:01+00:00

After commit 9bdac9142407 ("sparsemem: Put mem map for one node together."), vmemmap for one node will be allocated together, its logic is similar as memory allocation for pageblock flags. This patch introduces alloc_usemap_and_memmap to extract the same logic of memory alloction for pageblock flags and vmemmap. Signed-off-by: Wanpeng Li Cc: Dave Hansen Cc: Rik van Riel Cc: Fengguang Wu Cc: Joonsoo Kim Cc: Johannes Weiner Cc: Tejun Heo Cc: Yasuaki Ishimatsu Cc: David Rientjes Cc: KOSAKI Motohiro Cc: Jiri Kosina Cc: Yinghai Lu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm/sparse.c: put clear_hwpoisoned_pages within CONFIG_MEMORY_HOTREMOVE

2013-07-09T17:33:22+00:00

With CONFIG_MEMORY_HOTREMOVE unset, there is a compile warning: mm/sparse.c:755: warning: `clear_hwpoisoned_pages' defined but not used And Bisecting it ended up pointing to 4edd7ceff ("mm, hotplug: avoid compiling memory hotremove functions when disabled"). This is because the commit above put sparse_remove_one_section() within the protection of CONFIG_MEMORY_HOTREMOVE but the only user of clear_hwpoisoned_pages() is sparse_remove_one_section(), and it is not within the protection of CONFIG_MEMORY_HOTREMOVE. So put clear_hwpoisoned_pages within CONFIG_MEMORY_HOTREMOVE should fix the warning. Signed-off-by: Zhang Yanfei Cc: David Rientjes Acked-by: Toshi Kani Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

BMC/Intel-BMC/linux.git/mm/sparse.c, branch dev-4.7

mm: convert printk(KERN_ to pr_

mm: coalesce split strings

x86, mm: introduce vmem_altmap to augment vmemmap_populate()

mm: use macros from compiler.h instead of __attribute__((...))

sparse: fix comment

mm/sparse: use memblock apis for early memory allocations

mm/sparsemem: fix a bug in free_map_bootmem when CONFIG_SPARSEMEM_VMEMMAP

mm/sparsemem: use PAGES_PER_SECTION to remove redundant nr_pages parameter

mm/sparse: introduce alloc_usemap_and_memmap

mm/sparse.c: put clear_hwpoisoned_pages within CONFIG_MEMORY_HOTREMOVE

mm: use macros from compiler.h instead of attribute((...))