1. 12 3月, 2014 1 次提交
  2. 28 1月, 2014 1 次提交
  3. 22 1月, 2014 2 次提交
    • S
      arch/arm/mm/init.c: use memblock apis for early memory allocations · cfb66586
      Santosh Shilimkar 提交于
      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: NSantosh Shilimkar <santosh.shilimkar@ti.com>
      Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Christoph Lameter <cl@linux-foundation.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Grygorii Strashko <grygorii.strashko@ti.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: Michal Hocko <mhocko@suse.cz>
      Cc: Paul Walmsley <paul@pwsan.com>
      Cc: Pavel Machek <pavel@ucw.cz>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Tejun Heo <tj@kernel.org>
      Cc: Tony Lindgren <tony@atomide.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      cfb66586
    • M
      mm, show_mem: remove SHOW_MEM_FILTER_PAGE_COUNT · aec6a888
      Mel Gorman 提交于
      Commit 4b59e6c4 ("mm, show_mem: suppress page counts in
      non-blockable contexts") introduced SHOW_MEM_FILTER_PAGE_COUNT to
      suppress PFN walks on large memory machines.  Commit c78e9363 ("mm:
      do not walk all of system memory during show_mem") avoided a PFN walk in
      the generic show_mem helper which removes the requirement for
      SHOW_MEM_FILTER_PAGE_COUNT in that case.
      
      This patch removes PFN walkers from the arch-specific implementations
      that report on a per-node or per-zone granularity.  ARM and unicore32
      still do a PFN walk as they report memory usage on each bank which is a
      much finer granularity where the debugging information may still be of
      use.  As the remaining arches doing PFN walks have relatively small
      amounts of memory, this patch simply removes SHOW_MEM_FILTER_PAGE_COUNT.
      
      [akpm@linux-foundation.org: fix parisc]
      Signed-off-by: NMel Gorman <mgorman@suse.de>
      Acked-by: NDavid Rientjes <rientjes@google.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: James Bottomley <jejb@parisc-linux.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      aec6a888
  4. 08 1月, 2014 1 次提交
  5. 10 12月, 2013 1 次提交
  6. 24 11月, 2013 3 次提交
    • S
      ARM: mm: Remove bootmem code and switch to NO_BOOTMEM · 84f452b1
      Santosh Shilimkar 提交于
      Now with dma_mask series merged and max*pfn has consistent meaning on ARM
      as rest of the arch's thanks to RMK's mega series, lets switch ARM code
      to NO_BOOTMEM. With NO_BOOTMEM change, now we use memblock allocator to
      reserve space for crash kernel to have one less dependency with nobootmem
      allocator wrapper.
      
      Tested with both flat memory and sparse (faked) memory models with highmem
      enabled.
      
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
      Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
      84f452b1
    • G
      ARM: mm: Don't allow resizing of memblock data until "low" memory is not mapped · 8e58caef
      Grygorii Strashko 提交于
      If allowed by call to memblock_allow_resize() - The Memblock core will
      try to allocate additional memory and rearrange its internal data in
      case, if there are more then INIT_MEMBLOCK_REGIONS(128) memory regions
      of any type have been allocated. If this happens before Low memory is
      mapped (which is done now by map_lowmem()) the system will hang, because
      the Memblock core will try to operate with virtual addresses which
      aren't mapped yet.
      
      In ARM code, the memblock resizing is allowed (memblock_allow_resize())
      from arm_memblock_init() which is called before map_lowmem(), so
      this may lead to an error as described above.
      
      Hence, allow Memblock resizing later during init, from bootmem_init()
      when all appropriate mappings are ready.
      
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
      Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com>
      Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
      8e58caef
    • S
      ARM: mm: Fix max_mapnr with recent max*pfn updates · b3ba41f2
      Santosh Shilimkar 提交于
      With commit  26ba47b1 {ARM: 7805/1: mm: change max*pfn to include
      the physical offset of memory}, the max_pfn already contain
      PHYS_PFN_OFFSET, so it shouldn't be taken into account again.
      
      While at it, use use set_max_mapnr() helper.
      
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
      Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com>
      Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
      b3ba41f2
  7. 31 10月, 2013 2 次提交
    • S
      ARM: 7805/1: mm: change max*pfn to include the physical offset of memory · 26ba47b1
      Santosh Shilimkar 提交于
      Most of the kernel code assumes that max*pfn is maximum pfns because
      the physical start of memory is expected to be PFN0. Since this
      assumption is not true on ARM architectures, the meaning of max*pfn
      is number of memory pages. This is done to keep drivers happy which
      are making use of of these variable to calculate the dma bounce limit
      using dma_mask.
      
      Now since we have a architecture override possibility for DMAable
      maximum pfns, lets make meaning of max*pfns as maximum pnfs on ARM
      as well.
      
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
      Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      26ba47b1
    • R
      ARM: DMA-API: better handing of DMA masks for coherent allocations · 4dcfa600
      Russell King 提交于
      We need to start treating DMA masks as something which is specific to
      the bus that the device resides on, otherwise we're going to hit all
      sorts of nasty issues with LPAE and 32-bit DMA controllers in >32-bit
      systems, where memory is offset from PFN 0.
      
      In order to start doing this, we convert the DMA mask to a PFN using
      the device specific dma_to_pfn() macro.  This is the reverse of the
      pfn_to_dma() macro which is used to get the DMA address for the device.
      
      This gives us a PFN mask, which we can then check against the PFN
      limit of the DMA zone.
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      4dcfa600
  8. 15 10月, 2013 1 次提交
  9. 10 10月, 2013 2 次提交
  10. 27 8月, 2013 1 次提交
  11. 14 8月, 2013 1 次提交
  12. 26 7月, 2013 1 次提交
    • R
      ARM: constify machine_desc structure uses · ff69a4c8
      Russell King 提交于
      struct machine_desc records are defined everywhere as a 'const'
      structure, but unfortuantely it loses its const-ness through the use of
      linker magic - the symbols which surround the section are not declared
      const so it becomes possible not to use 'const' for pointers to these
      const structures.
      
      Let's fix this oversight - all pointers to these structures should be
      marked const too.
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      ff69a4c8
  13. 24 7月, 2013 1 次提交
  14. 09 7月, 2013 1 次提交
  15. 04 7月, 2013 4 次提交
    • J
      mm/ARM: prepare for removing num_physpages and simplify mem_init() · 2450c973
      Jiang Liu 提交于
      Prepare for removing num_physpages and simplify mem_init().
      Signed-off-by: NJiang Liu <jiang.liu@huawei.com>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      2450c973
    • J
      mm: concentrate modification of totalram_pages into the mm core · 0c988534
      Jiang Liu 提交于
      Concentrate code to modify totalram_pages into the mm core, so the arch
      memory initialized code doesn't need to take care of it.  With these
      changes applied, only following functions from mm core modify global
      variable totalram_pages: free_bootmem_late(), free_all_bootmem(),
      free_all_bootmem_node(), adjust_managed_page_count().
      
      With this patch applied, it will be much more easier for us to keep
      totalram_pages and zone->managed_pages in consistence.
      Signed-off-by: NJiang Liu <jiang.liu@huawei.com>
      Acked-by: NDavid Howells <dhowells@redhat.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: "Michael S. Tsirkin" <mst@redhat.com>
      Cc: <sworddragon2@aol.com>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Metcalf <cmetcalf@tilera.com>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jeremy Fitzhardinge <jeremy@goop.org>
      Cc: Jianguo Wu <wujianguo@huawei.com>
      Cc: Joonsoo Kim <js1304@gmail.com>
      Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: Marek Szyprowski <m.szyprowski@samsung.com>
      Cc: Mel Gorman <mel@csn.ul.ie>
      Cc: Michel Lespinasse <walken@google.com>
      Cc: Minchan Kim <minchan@kernel.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Tang Chen <tangchen@cn.fujitsu.com>
      Cc: Tejun Heo <tj@kernel.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wen Congyang <wency@cn.fujitsu.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      0c988534
    • J
      mm: enhance free_reserved_area() to support poisoning memory with zero · dbe67df4
      Jiang Liu 提交于
      Address more review comments from last round of code review.
      1) Enhance free_reserved_area() to support poisoning freed memory with
         pattern '0'. This could be used to get rid of poison_init_mem()
         on ARM64.
      2) A previous patch has disabled memory poison for initmem on s390
         by mistake, so restore to the original behavior.
      3) Remove redundant PAGE_ALIGN() when calling free_reserved_area().
      Signed-off-by: NJiang Liu <jiang.liu@huawei.com>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: "Michael S. Tsirkin" <mst@redhat.com>
      Cc: <sworddragon2@aol.com>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Metcalf <cmetcalf@tilera.com>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jeremy Fitzhardinge <jeremy@goop.org>
      Cc: Jianguo Wu <wujianguo@huawei.com>
      Cc: Joonsoo Kim <js1304@gmail.com>
      Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: Marek Szyprowski <m.szyprowski@samsung.com>
      Cc: Mel Gorman <mel@csn.ul.ie>
      Cc: Michel Lespinasse <walken@google.com>
      Cc: Minchan Kim <minchan@kernel.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Tang Chen <tangchen@cn.fujitsu.com>
      Cc: Tejun Heo <tj@kernel.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wen Congyang <wency@cn.fujitsu.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      dbe67df4
    • J
      mm: change signature of free_reserved_area() to fix building warnings · 11199692
      Jiang Liu 提交于
      Change signature of free_reserved_area() according to Russell King's
      suggestion to fix following build warnings:
      
        arch/arm/mm/init.c: In function 'mem_init':
        arch/arm/mm/init.c:603:2: warning: passing argument 1 of 'free_reserved_area' makes integer from pointer without a cast [enabled by default]
          free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL);
          ^
        In file included from include/linux/mman.h:4:0,
                         from arch/arm/mm/init.c:15:
        include/linux/mm.h:1301:22: note: expected 'long unsigned int' but argument is of type 'void *'
         extern unsigned long free_reserved_area(unsigned long start, unsigned long end,
      
         mm/page_alloc.c: In function 'free_reserved_area':
      >> mm/page_alloc.c:5134:3: warning: passing argument 1 of 'virt_to_phys' makes pointer from integer without a cast [enabled by default]
         In file included from arch/mips/include/asm/page.h:49:0,
                          from include/linux/mmzone.h:20,
                          from include/linux/gfp.h:4,
                          from include/linux/mm.h:8,
                          from mm/page_alloc.c:18:
         arch/mips/include/asm/io.h:119:29: note: expected 'const volatile void *' but argument is of type 'long unsigned int'
         mm/page_alloc.c: In function 'free_area_init_nodes':
         mm/page_alloc.c:5030:34: warning: array subscript is below array bounds [-Warray-bounds]
      
      Also address some minor code review comments.
      Signed-off-by: NJiang Liu <jiang.liu@huawei.com>
      Reported-by: NArnd Bergmann <arnd@arndb.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: "Michael S. Tsirkin" <mst@redhat.com>
      Cc: <sworddragon2@aol.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Metcalf <cmetcalf@tilera.com>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Jeremy Fitzhardinge <jeremy@goop.org>
      Cc: Jianguo Wu <wujianguo@huawei.com>
      Cc: Joonsoo Kim <js1304@gmail.com>
      Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: Marek Szyprowski <m.szyprowski@samsung.com>
      Cc: Mel Gorman <mel@csn.ul.ie>
      Cc: Michel Lespinasse <walken@google.com>
      Cc: Minchan Kim <minchan@kernel.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Tang Chen <tangchen@cn.fujitsu.com>
      Cc: Tejun Heo <tj@kernel.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wen Congyang <wency@cn.fujitsu.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      11199692
  16. 30 5月, 2013 2 次提交
  17. 30 4月, 2013 3 次提交
  18. 13 8月, 2012 1 次提交
  19. 29 6月, 2012 1 次提交
  20. 11 6月, 2012 1 次提交
  21. 21 5月, 2012 1 次提交
  22. 28 4月, 2012 1 次提交
    • S
      ARM: 7401/1: mm: Fix section mismatches · 14904927
      Stephen Boyd 提交于
      WARNING: vmlinux.o(.text+0x111b8): Section mismatch in reference
      from the function arm_memory_present() to the function
      .init.text:memory_present()
      The function arm_memory_present() references
      the function __init memory_present().
      This is often because arm_memory_present lacks a __init
      annotation or the annotation of memory_present is wrong.
      
      WARNING: arch/arm/mm/built-in.o(.text+0x1edc): Section mismatch
      in reference from the function alloc_init_pud() to the function
      .init.text:alloc_init_section()
      The function alloc_init_pud() references
      the function __init alloc_init_section().
      This is often because alloc_init_pud lacks a __init
      annotation or the annotation of alloc_init_section is wrong.
      Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      14904927
  23. 24 3月, 2012 1 次提交
  24. 10 2月, 2012 1 次提交
  25. 20 1月, 2012 1 次提交
  26. 13 1月, 2012 1 次提交
    • R
      ARM: Add arm_memblock_steal() to allocate memory away from the kernel · 716a3dc2
      Russell King 提交于
      Several platforms are now using the memblock_alloc+memblock_free+
      memblock_remove trick to obtain memory which won't be mapped in the
      kernel's page tables.  Most platforms do this (correctly) in the
      ->reserve callback.  However, OMAP has started to call these functions
      outside of this callback, and this is extremely unsafe - memory will
      not be unmapped, and could well be given out after memblock is no
      longer responsible for its management.
      
      So, provide arm_memblock_steal() to perform this function, and ensure
      that it panic()s if it is used inappropriately.  Convert everyone
      over, including OMAP.
      
      As a result, OMAP with OMAP4_ERRATA_I688 enabled will panic on boot
      with this change.  Mark this option as BROKEN and make it depend on
      BROKEN.  OMAP needs to be fixed, or 137d105d (ARM: OMAP4: Fix
      errata i688 with MPU interconnect barriers.) reverted until such
      time it can be fixed correctly.
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      716a3dc2
  27. 09 12月, 2011 3 次提交
    • T
      memblock: s/memblock_analyze()/memblock_allow_resize()/ and update users · 1aadc056
      Tejun Heo 提交于
      The only function of memblock_analyze() is now allowing resize of
      memblock region arrays.  Rename it to memblock_allow_resize() and
      update its users.
      
      * The following users remain the same other than renaming.
      
        arm/mm/init.c::arm_memblock_init()
        microblaze/kernel/prom.c::early_init_devtree()
        powerpc/kernel/prom.c::early_init_devtree()
        openrisc/kernel/prom.c::early_init_devtree()
        sh/mm/init.c::paging_init()
        sparc/mm/init_64.c::paging_init()
        unicore32/mm/init.c::uc32_memblock_init()
      
      * In the following users, analyze was used to update total size which
        is no longer necessary.
      
        powerpc/kernel/machine_kexec.c::reserve_crashkernel()
        powerpc/kernel/prom.c::early_init_devtree()
        powerpc/mm/init_32.c::MMU_init()
        powerpc/mm/tlb_nohash.c::__early_init_mmu()  
        powerpc/platforms/ps3/mm.c::ps3_mm_add_memory()
        powerpc/platforms/embedded6xx/wii.c::wii_memory_fixups()
        sh/kernel/machine_kexec.c::reserve_crashkernel()
      
      * x86/kernel/e820.c::memblock_x86_fill() was directly setting
        memblock_can_resize before populating memblock and calling analyze
        afterwards.  Call memblock_allow_resize() before start populating.
      
      memblock_can_resize is now static inside memblock.c.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      1aadc056
    • T
      memblock: Kill memblock_init() · fe091c20
      Tejun Heo 提交于
      memblock_init() initializes arrays for regions and memblock itself;
      however, all these can be done with struct initializers and
      memblock_init() can be removed.  This patch kills memblock_init() and
      initializes memblock with struct initializer.
      
      The only difference is that the first dummy entries don't have .nid
      set to MAX_NUMNODES initially.  This doesn't cause any behavior
      difference.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      fe091c20
    • T
      memblock: Fix include breakages caused by 24aa0788 · 1c16d242
      Tejun Heo 提交于
      24aa0788 (memblock, x86: Replace memblock_x86_reserve/free_range()
      with generic ones) removed arch/x86/include/asm/memblock.h and dropped
      its inclusion from include/linux/memblock.h which breaks other
      architectures which depended on the generic memblock.h pulling in the
      arch specific one.
      
      However, the proper fix isn't adding back the asm inclusion.  memblock
      doesn't have any arch dependent part and doesn't need arch specific
      header file and asm/memblock.h files are either practically empty or
      contain mostly unrelated arch specific stuff.
      
      * In microblaze, sh, powerpc, sparc and openrisc, asm/memblock.h is
        either empty or just contains unused MEMBLOCK_DBG() macro.  Remove
        them.
      
      * In arm and unicore32, asm/memblock.h contains arch specific stuff.
        Include it directly from its users.  It might be a good idea to
        rename the header file to avoid confusion.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Reported-by: N"H. Peter Anvin" <hpa@zytor.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
      1c16d242