On Wed, 2018-07-04 at 16:18 +0300, Mike Rapoport wrote:
> Remove bootmem bitmap initialization and replace reserve_bootmem()
> with
> memblock_reserve().
>
> Signed-off-by: Mike Rapoport <r...@linux.vnet.ibm.com>
> ---
> arch/nios2/Kconfig | 2 ++
> arch/nios2/kernel/prom.c | 7 -------
> arch/nios2/kernel/setup.c | 37 +++++--------------------------------
> 3 files changed, 7 insertions(+), 39 deletions(-)
>
> diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
> index 5db8fa1..661f7f9 100644
> --- a/arch/nios2/Kconfig
> +++ b/arch/nios2/Kconfig
> @@ -20,6 +20,8 @@ config NIOS2
> select USB_ARCH_HAS_HCD if USB_SUPPORT
> select CPU_NO_EFFICIENT_FFS
> select HAVE_MEMBLOCK
> + select ARCH_DISCARD_MEMBLOCK
> + select NO_BOOTMEM
>
> config GENERIC_CSUM
> def_bool y
> diff --git a/arch/nios2/kernel/prom.c b/arch/nios2/kernel/prom.c
> index ba96a49..a6d4f75 100644
> --- a/arch/nios2/kernel/prom.c
> +++ b/arch/nios2/kernel/prom.c
> @@ -32,13 +32,6 @@
>
> #include <asm/sections.h>
>
> -int __init early_init_dt_reserve_memory_arch(phys_addr_t base,
> phys_addr_t size,
> - bool nomap)
> -{
> - reserve_bootmem(base, size, BOOTMEM_DEFAULT);
> - return 0;
> -}
> -
> void __init early_init_devtree(void *params)
> {
> __be32 *dtb = (u32 *)__dtb_start;
> diff --git a/arch/nios2/kernel/setup.c b/arch/nios2/kernel/setup.c
> index 0946840..2d0011d 100644
> --- a/arch/nios2/kernel/setup.c
> +++ b/arch/nios2/kernel/setup.c
> @@ -144,10 +144,11 @@ asmlinkage void __init nios2_boot_init(unsigned
> r4, unsigned r5, unsigned r6,
>
> void __init setup_arch(char **cmdline_p)
> {
> - int bootmap_size;
> + int dram_start;
>
> console_verbose();
>
> + dram_start = memblock_start_of_DRAM();
> memory_size = memblock_phys_mem_size();
> memory_start = PAGE_ALIGN((unsigned long)__pa(_end));
> memory_end = (unsigned long) CONFIG_NIOS2_MEM_BASE +
> memory_size;
> @@ -165,39 +166,11 @@ void __init setup_arch(char **cmdline_p)
> max_low_pfn = PFN_DOWN(memory_end);
> max_mapnr = max_low_pfn;
>
> - /*
> - * give all the memory to the bootmap allocator, tell it to
> put the
> - * boot mem_map at the start of memory
> - */
> - pr_debug("init_bootmem_node(?,%#lx, %#x, %#lx)\n",
> - min_low_pfn, PFN_DOWN(PHYS_OFFSET), max_low_pfn);
> - bootmap_size = init_bootmem_node(NODE_DATA(0),
> - min_low_pfn,
> PFN_DOWN(PHYS_OFFSET),
> - max_low_pfn);
> -
> - /*
> - * free the usable memory, we have to make sure we do not
> free
> - * the bootmem bitmap so we then reserve it after freeing it
> :-)
> - */
> - pr_debug("free_bootmem(%#lx, %#lx)\n",
> - memory_start, memory_end - memory_start);
> - free_bootmem(memory_start, memory_end - memory_start);
> -
> - /*
> - * Reserve the bootmem bitmap itself as well. We do this in
> two
> - * steps (first step was init_bootmem()) because this catches
> - * the (very unlikely) case of us accidentally initializing
> the
> - * bootmem allocator with an invalid RAM area.
> - *
> - * Arguments are start, size
> - */
> - pr_debug("reserve_bootmem(%#lx, %#x)\n", memory_start,
> bootmap_size);
> - reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
> -
> + memblock_reserve(dram_start, memory_start - dram_start);
> #ifdef CONFIG_BLK_DEV_INITRD
> if (initrd_start) {
> - reserve_bootmem(virt_to_phys((void *)initrd_start),
> - initrd_end - initrd_start,
> BOOTMEM_DEFAULT);
> + memblock_reserve(virt_to_phys((void *)initrd_start),
> + initrd_end - initrd_start);
> }
> #endif /* CONFIG_BLK_DEV_INITRD */
>
> --
> 2.7.4
Acked-by: Ley Foon Tan <ley.foon....@intel.com>
