From e92d39cdb120219a16502ca646d407d61cd7adf4 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Fri, 26 Oct 2018 15:05:05 -0700 Subject: unicore32: switch to NO_BOOTMEM The unicore32 architecture already supports memblock and uses it for some early memory reservations, e.g initrd and the page tables. At some point unicore32 allocates the bootmem bitmap from the memblock and then hands over the memory reservations from memblock to bootmem. This patch removes the bootmem initialization and leaves memblock as the only boot time memory manager for unicore32. Link: http://lkml.kernel.org/r/1533326330-31677-8-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport Acked-by: Guan Xuetao Cc: Ley Foon Tan Cc: Richard Kuo Cc: Richard Weinberger Cc: Rob Herring Cc: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/unicore32/Kconfig | 1 + arch/unicore32/mm/init.c | 54 +----------------------------------------------- 2 files changed, 2 insertions(+), 53 deletions(-) (limited to 'arch/unicore32') diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig index 3a3b40f79558..0c5111b206bd 100644 --- a/arch/unicore32/Kconfig +++ b/arch/unicore32/Kconfig @@ -6,6 +6,7 @@ config UNICORE32 select ARCH_MIGHT_HAVE_PC_SERIO select DMA_DIRECT_OPS select HAVE_MEMBLOCK + select NO_BOOTMEM select HAVE_GENERIC_DMA_COHERENT select HAVE_KERNEL_GZIP select HAVE_KERNEL_BZIP2 diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c index 5f72a8d1d953..8f8699e62bd5 100644 --- a/arch/unicore32/mm/init.c +++ b/arch/unicore32/mm/init.c @@ -84,58 +84,6 @@ static void __init find_limits(unsigned long *min, unsigned long *max_low, } } -static void __init uc32_bootmem_init(unsigned long start_pfn, - unsigned long end_pfn) -{ - struct memblock_region *reg; - unsigned int boot_pages; - phys_addr_t bitmap; - pg_data_t *pgdat; - - /* - * Allocate the bootmem bitmap page. This must be in a region - * of memory which has already been mapped. - */ - boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn); - bitmap = memblock_alloc_base(boot_pages << PAGE_SHIFT, L1_CACHE_BYTES, - __pfn_to_phys(end_pfn)); - - /* - * Initialise the bootmem allocator, handing the - * memory banks over to bootmem. - */ - node_set_online(0); - pgdat = NODE_DATA(0); - init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn); - - /* Free the lowmem regions from memblock into bootmem. */ - for_each_memblock(memory, reg) { - unsigned long start = memblock_region_memory_base_pfn(reg); - unsigned long end = memblock_region_memory_end_pfn(reg); - - if (end >= end_pfn) - end = end_pfn; - if (start >= end) - break; - - free_bootmem(__pfn_to_phys(start), (end - start) << PAGE_SHIFT); - } - - /* Reserve the lowmem memblock reserved regions in bootmem. */ - for_each_memblock(reserved, reg) { - unsigned long start = memblock_region_reserved_base_pfn(reg); - unsigned long end = memblock_region_reserved_end_pfn(reg); - - if (end >= end_pfn) - end = end_pfn; - if (start >= end) - break; - - reserve_bootmem(__pfn_to_phys(start), - (end - start) << PAGE_SHIFT, BOOTMEM_DEFAULT); - } -} - static void __init uc32_bootmem_free(unsigned long min, unsigned long max_low, unsigned long max_high) { @@ -232,7 +180,7 @@ void __init bootmem_init(void) find_limits(&min, &max_low, &max_high); - uc32_bootmem_init(min, max_low); + node_set_online(0); /* * Sparsemem tries to allocate bootmem in memory_present(), -- cgit v1.2.3