Hi, These patches simplify some of the early memory allocations by replacing usage of older memblock APIs with newer and shinier ones. Quite a few places in the arch/ code allocated memory using a memblock API that returns a physical address of the allocated area, then converted this physical address to a virtual one and then used memset(0) to clear the allocated range. More recent memblock APIs do all the three steps in one call and their usage simplifies the code. It's important to note that regardless of API used, the core allocation is nearly identical for any set of memblock allocators: first it tries to find a free memory with all the constraints specified by the caller and then falls back to the allocation with some or all constraints disabled. The first three patches perform the conversion of call sites that have exact requirements for the node and the possible memory range. The fourth patch is a bit one-off as it simplifies openrisc's implementation of pte_alloc_one_kernel(), and not only the memblock usage. The fifth patch takes care of simpler cases when the allocation can be satisfied with a simple call to memblock_alloc(). Mike Rapoport (5): powerpc: prefer memblock APIs returning virtual address microblaze: prefer memblock API returning virtual address sh: prefer memblock APIs returning virtual address openrisc: simplify pte_alloc_one_kernel() arch: simplify several early memory allocations arch/arm/mm/mmu.c | 4 +--- arch/c6x/mm/dma-coherent.c | 9 ++------- arch/microblaze/mm/init.c | 5 +++-- arch/nds32/mm/init.c | 12 ++++-------- arch/openrisc/mm/ioremap.c | 11 ++++------- arch/powerpc/kernel/paca.c | 14 ++++++-------- arch/powerpc/kernel/setup-common.c | 4 ++-- arch/powerpc/kernel/setup_64.c | 21 ++++++++++----------- arch/powerpc/mm/hash_utils_64.c | 6 +++--- arch/powerpc/mm/pgtable-book3e.c | 8 ++------ arch/powerpc/mm/pgtable-book3s64.c | 5 +---- arch/powerpc/mm/pgtable-radix.c | 24 +++++++++--------------- arch/powerpc/mm/pgtable_32.c | 4 +--- arch/powerpc/mm/ppc_mmu_32.c | 3 +-- arch/powerpc/platforms/pasemi/iommu.c | 5 +++-- arch/powerpc/platforms/powernv/opal.c | 3 +-- arch/powerpc/platforms/pseries/setup.c | 11 +++++++---- arch/powerpc/sysdev/dart_iommu.c | 5 +++-- arch/sh/mm/init.c | 18 +++++------------- arch/sh/mm/numa.c | 5 ++--- arch/sparc/kernel/prom_64.c | 7 ++----- arch/sparc/mm/init_64.c | 9 +++------ arch/unicore32/mm/mmu.c | 4 +--- 23 files changed, 76 insertions(+), 121 deletions(-) -- 2.7.4
