Re: [RFC PATCH 19/29] memblock: replace alloc_bootmem_pages with memblock_alloc

From: Michal Hocko
Date: Thu Sep 06 2018 - 04:44:40 EST

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In reply to: Mike Rapoport: "[RFC PATCH 19/29] memblock: replace alloc_bootmem_pages with memblock_alloc"
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On Wed 05-09-18 18:59:34, Mike Rapoport wrote:
> The conversion is done using the following semantic patch:
>
> @@
> expression e;
> @@
> - alloc_bootmem_pages(e)
> + memblock_alloc(e, PAGE_SIZE)
>
> Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>

Same as the previous patch

Acked-by: Michal Hocko <mhocko@xxxxxxxx>

> ---
> arch/c6x/mm/init.c | 3 ++-
> arch/h8300/mm/init.c | 2 +-
> arch/m68k/mm/init.c | 2 +-
> arch/m68k/mm/mcfmmu.c | 4 ++--
> arch/m68k/mm/motorola.c | 2 +-
> arch/m68k/mm/sun3mmu.c | 4 ++--
> arch/sh/mm/init.c | 4 ++--
> arch/x86/kernel/apic/io_apic.c | 3 ++-
> arch/x86/mm/init_64.c | 2 +-
> drivers/xen/swiotlb-xen.c | 3 ++-
> 10 files changed, 16 insertions(+), 13 deletions(-)
>
> diff --git a/arch/c6x/mm/init.c b/arch/c6x/mm/init.c
> index 4cc72b0..dc369ad 100644
> --- a/arch/c6x/mm/init.c
> +++ b/arch/c6x/mm/init.c
> @@ -38,7 +38,8 @@ void __init paging_init(void)
> struct pglist_data *pgdat = NODE_DATA(0);
> unsigned long zones_size[MAX_NR_ZONES] = {0, };
>
> - empty_zero_page = (unsigned long) alloc_bootmem_pages(PAGE_SIZE);
> + empty_zero_page = (unsigned long) memblock_alloc(PAGE_SIZE,
> + PAGE_SIZE);
> memset((void *)empty_zero_page, 0, PAGE_SIZE);
>
> /*
> diff --git a/arch/h8300/mm/init.c b/arch/h8300/mm/init.c
> index 015287a..5d31ac9 100644
> --- a/arch/h8300/mm/init.c
> +++ b/arch/h8300/mm/init.c
> @@ -67,7 +67,7 @@ void __init paging_init(void)
> * Initialize the bad page table and bad page to point
> * to a couple of allocated pages.
> */
> - empty_zero_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
> + empty_zero_page = (unsigned long)memblock_alloc(PAGE_SIZE, PAGE_SIZE);
> memset((void *)empty_zero_page, 0, PAGE_SIZE);
>
> /*
> diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c
> index 38e2b27..977363e 100644
> --- a/arch/m68k/mm/init.c
> +++ b/arch/m68k/mm/init.c
> @@ -93,7 +93,7 @@ void __init paging_init(void)
>
> high_memory = (void *) end_mem;
>
> - empty_zero_page = alloc_bootmem_pages(PAGE_SIZE);
> + empty_zero_page = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
>
> /*
> * Set up SFC/DFC registers (user data space).
> diff --git a/arch/m68k/mm/mcfmmu.c b/arch/m68k/mm/mcfmmu.c
> index f5453d9..38a1d92 100644
> --- a/arch/m68k/mm/mcfmmu.c
> +++ b/arch/m68k/mm/mcfmmu.c
> @@ -44,7 +44,7 @@ void __init paging_init(void)
> enum zone_type zone;
> int i;
>
> - empty_zero_page = (void *) alloc_bootmem_pages(PAGE_SIZE);
> + empty_zero_page = (void *) memblock_alloc(PAGE_SIZE, PAGE_SIZE);
> memset((void *) empty_zero_page, 0, PAGE_SIZE);
>
> pg_dir = swapper_pg_dir;
> @@ -52,7 +52,7 @@ void __init paging_init(void)
>
> size = num_pages * sizeof(pte_t);
> size = (size + PAGE_SIZE) & ~(PAGE_SIZE-1);
> - next_pgtable = (unsigned long) alloc_bootmem_pages(size);
> + next_pgtable = (unsigned long) memblock_alloc(size, PAGE_SIZE);
>
> bootmem_end = (next_pgtable + size + PAGE_SIZE) & PAGE_MASK;
> pg_dir += PAGE_OFFSET >> PGDIR_SHIFT;
> diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
> index 8bcf57e..2113eec 100644
> --- a/arch/m68k/mm/motorola.c
> +++ b/arch/m68k/mm/motorola.c
> @@ -276,7 +276,7 @@ void __init paging_init(void)
> * initialize the bad page table and bad page to point
> * to a couple of allocated pages
> */
> - empty_zero_page = alloc_bootmem_pages(PAGE_SIZE);
> + empty_zero_page = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
>
> /*
> * Set up SFC/DFC registers
> diff --git a/arch/m68k/mm/sun3mmu.c b/arch/m68k/mm/sun3mmu.c
> index 4a99799..19c05ab 100644
> --- a/arch/m68k/mm/sun3mmu.c
> +++ b/arch/m68k/mm/sun3mmu.c
> @@ -45,7 +45,7 @@ void __init paging_init(void)
> unsigned long zones_size[MAX_NR_ZONES] = { 0, };
> unsigned long size;
>
> - empty_zero_page = alloc_bootmem_pages(PAGE_SIZE);
> + empty_zero_page = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
>
> address = PAGE_OFFSET;
> pg_dir = swapper_pg_dir;
> @@ -55,7 +55,7 @@ void __init paging_init(void)
> size = num_pages * sizeof(pte_t);
> size = (size + PAGE_SIZE) & ~(PAGE_SIZE-1);
>
> - next_pgtable = (unsigned long)alloc_bootmem_pages(size);
> + next_pgtable = (unsigned long)memblock_alloc(size, PAGE_SIZE);
> bootmem_end = (next_pgtable + size + PAGE_SIZE) & PAGE_MASK;
>
> /* Map whole memory from PAGE_OFFSET (0x0E000000) */
> diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
> index 7713c08..c884b76 100644
> --- a/arch/sh/mm/init.c
> +++ b/arch/sh/mm/init.c
> @@ -128,7 +128,7 @@ static pmd_t * __init one_md_table_init(pud_t *pud)
> if (pud_none(*pud)) {
> pmd_t *pmd;
>
> - pmd = alloc_bootmem_pages(PAGE_SIZE);
> + pmd = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
> pud_populate(&init_mm, pud, pmd);
> BUG_ON(pmd != pmd_offset(pud, 0));
> }
> @@ -141,7 +141,7 @@ static pte_t * __init one_page_table_init(pmd_t *pmd)
> if (pmd_none(*pmd)) {
> pte_t *pte;
>
> - pte = alloc_bootmem_pages(PAGE_SIZE);
> + pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
> pmd_populate_kernel(&init_mm, pmd, pte);
> BUG_ON(pte != pte_offset_kernel(pmd, 0));
> }
> diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
> index ff0d14c..e25118f 100644
> --- a/arch/x86/kernel/apic/io_apic.c
> +++ b/arch/x86/kernel/apic/io_apic.c
> @@ -2621,7 +2621,8 @@ void __init io_apic_init_mappings(void)
> #ifdef CONFIG_X86_32
> fake_ioapic_page:
> #endif
> - ioapic_phys = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
> + ioapic_phys = (unsigned long)memblock_alloc(PAGE_SIZE,
> + PAGE_SIZE);
> ioapic_phys = __pa(ioapic_phys);
> }
> set_fixmap_nocache(idx, ioapic_phys);
> diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
> index dd519f3..f39b512 100644
> --- a/arch/x86/mm/init_64.c
> +++ b/arch/x86/mm/init_64.c
> @@ -197,7 +197,7 @@ static __ref void *spp_getpage(void)
> if (after_bootmem)
> ptr = (void *) get_zeroed_page(GFP_ATOMIC);
> else
> - ptr = alloc_bootmem_pages(PAGE_SIZE);
> + ptr = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
>
> if (!ptr || ((unsigned long)ptr & ~PAGE_MASK)) {
> panic("set_pte_phys: cannot allocate page data %s\n",
> diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
> index a6f9ba8..8d849b4 100644
> --- a/drivers/xen/swiotlb-xen.c
> +++ b/drivers/xen/swiotlb-xen.c
> @@ -217,7 +217,8 @@ int __ref xen_swiotlb_init(int verbose, bool early)
> * Get IO TLB memory from any location.
> */
> if (early)
> - xen_io_tlb_start = alloc_bootmem_pages(PAGE_ALIGN(bytes));
> + xen_io_tlb_start = memblock_alloc(PAGE_ALIGN(bytes),
> + PAGE_SIZE);
> else {
> #define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT))
> #define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT)
> --
> 2.7.4
>

--
Michal Hocko
SUSE Labs

Next message: Geert Uytterhoeven: "Re: [PATCH 01/21] of: Add cpu node iterator for_each_of_cpu_node()"
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In reply to: Mike Rapoport: "[RFC PATCH 19/29] memblock: replace alloc_bootmem_pages with memblock_alloc"
Next in thread: Mike Rapoport: "[RFC PATCH 20/29] memblock: replace __alloc_bootmem with memblock_alloc_from"
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