diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/Kconfig | 3 | ||||
| -rw-r--r-- | arch/arm/Kconfig | 4 | ||||
| -rw-r--r-- | arch/arm/mm/init.c | 78 | ||||
| -rw-r--r-- | arch/arm64/Kconfig | 4 | ||||
| -rw-r--r-- | arch/arm64/mm/init.c | 68 |
5 files changed, 5 insertions, 152 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 54a240b61f56..8d5efff59cd8 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -1044,6 +1044,9 @@ config ARCH_WANT_LD_ORPHAN_WARN by the linker, since the locations of such sections can change between linker versions. +config HAVE_ARCH_PFN_VALID + bool + source "kernel/gcov/Kconfig" source "scripts/gcc-plugins/Kconfig" diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 353c3979a2d5..03602e8fe16d 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -69,6 +69,7 @@ config ARM select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU select HAVE_ARCH_MMAP_RND_BITS if MMU + select HAVE_ARCH_PFN_VALID select HAVE_ARCH_SECCOMP select HAVE_ARCH_SECCOMP_FILTER if AEABI && !OABI_COMPAT select HAVE_ARCH_THREAD_STRUCT_WHITELIST @@ -1489,9 +1490,6 @@ config ARCH_SPARSEMEM_ENABLE bool select SPARSEMEM_STATIC if SPARSEMEM -config HAVE_ARCH_PFN_VALID - def_bool y - config HIGHMEM bool "High Memory Support" depends on MMU diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index c23dbf8bebee..db623d7c30de 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -267,83 +267,6 @@ static inline void poison_init_mem(void *s, size_t count) *p++ = 0xe7fddef0; } -static inline void __init -free_memmap(unsigned long start_pfn, unsigned long end_pfn) -{ - struct page *start_pg, *end_pg; - phys_addr_t pg, pgend; - - /* - * Convert start_pfn/end_pfn to a struct page pointer. - */ - start_pg = pfn_to_page(start_pfn - 1) + 1; - end_pg = pfn_to_page(end_pfn - 1) + 1; - - /* - * Convert to physical addresses, and - * round start upwards and end downwards. - */ - pg = PAGE_ALIGN(__pa(start_pg)); - pgend = __pa(end_pg) & PAGE_MASK; - - /* - * If there are free pages between these, - * free the section of the memmap array. - */ - if (pg < pgend) - memblock_free_early(pg, pgend - pg); -} - -/* - * The mem_map array can get very big. Free the unused area of the memory map. - */ -static void __init free_unused_memmap(void) -{ - unsigned long start, end, prev_end = 0; - int i; - - /* - * This relies on each bank being in address order. - * The banks are sorted previously in bootmem_init(). - */ - for_each_mem_pfn_range(i, MAX_NUMNODES, &start, &end, NULL) { -#ifdef CONFIG_SPARSEMEM - /* - * Take care not to free memmap entries that don't exist - * due to SPARSEMEM sections which aren't present. - */ - start = min(start, - ALIGN(prev_end, PAGES_PER_SECTION)); -#else - /* - * Align down here since the VM subsystem insists that the - * memmap entries are valid from the bank start aligned to - * MAX_ORDER_NR_PAGES. - */ - start = round_down(start, MAX_ORDER_NR_PAGES); -#endif - /* - * If we had a previous bank, and there is a space - * between the current bank and the previous, free it. - */ - if (prev_end && prev_end < start) - free_memmap(prev_end, start); - - /* - * Align up here since the VM subsystem insists that the - * memmap entries are valid from the bank end aligned to - * MAX_ORDER_NR_PAGES. - */ - prev_end = ALIGN(end, MAX_ORDER_NR_PAGES); - } - -#ifdef CONFIG_SPARSEMEM - if (!IS_ALIGNED(prev_end, PAGES_PER_SECTION)) - free_memmap(prev_end, - ALIGN(prev_end, PAGES_PER_SECTION)); -#endif -} - static void __init free_highpages(void) { #ifdef CONFIG_HIGHMEM @@ -385,7 +308,6 @@ void __init mem_init(void) set_max_mapnr(pfn_to_page(max_pfn) - mem_map); /* this will put all unused low memory onto the freelists */ - free_unused_memmap(); memblock_free_all(); #ifdef CONFIG_SA1111 diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 15bb857e42e1..6f0751631ef1 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -140,6 +140,7 @@ config ARM64 select HAVE_ARCH_KGDB select HAVE_ARCH_MMAP_RND_BITS select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT + select HAVE_ARCH_PFN_VALID select HAVE_ARCH_PREL32_RELOCATIONS select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_STACKLEAK @@ -1043,9 +1044,6 @@ config ARCH_SELECT_MEMORY_MODEL config ARCH_FLATMEM_ENABLE def_bool !NUMA -config HAVE_ARCH_PFN_VALID - def_bool y - config HW_PERF_EVENTS def_bool y depends on ARM_PMU diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 095540667f0f..3d8328277bec 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -430,71 +430,6 @@ void __init bootmem_init(void) memblock_dump_all(); } -#ifndef CONFIG_SPARSEMEM_VMEMMAP -static inline void free_memmap(unsigned long start_pfn, unsigned long end_pfn) -{ - struct page *start_pg, *end_pg; - unsigned long pg, pgend; - - /* - * Convert start_pfn/end_pfn to a struct page pointer. - */ - start_pg = pfn_to_page(start_pfn - 1) + 1; - end_pg = pfn_to_page(end_pfn - 1) + 1; - - /* - * Convert to physical addresses, and round start upwards and end - * downwards. - */ - pg = (unsigned long)PAGE_ALIGN(__pa(start_pg)); - pgend = (unsigned long)__pa(end_pg) & PAGE_MASK; - - /* - * If there are free pages between these, free the section of the - * memmap array. - */ - if (pg < pgend) - memblock_free(pg, pgend - pg); -} - -/* - * The mem_map array can get very big. Free the unused area of the memory map. - */ -static void __init free_unused_memmap(void) -{ - unsigned long start, end, prev_end = 0; - int i; - - for_each_mem_pfn_range(i, MAX_NUMNODES, &start, &end, NULL) { -#ifdef CONFIG_SPARSEMEM - /* - * Take care not to free memmap entries that don't exist due - * to SPARSEMEM sections which aren't present. - */ - start = min(start, ALIGN(prev_end, PAGES_PER_SECTION)); -#endif - /* - * If we had a previous bank, and there is a space between the - * current bank and the previous, free it. - */ - if (prev_end && prev_end < start) - free_memmap(prev_end, start); - - /* - * Align up here since the VM subsystem insists that the - * memmap entries are valid from the bank end aligned to - * MAX_ORDER_NR_PAGES. - */ - prev_end = ALIGN(end, MAX_ORDER_NR_PAGES); - } - -#ifdef CONFIG_SPARSEMEM - if (!IS_ALIGNED(prev_end, PAGES_PER_SECTION)) - free_memmap(prev_end, ALIGN(prev_end, PAGES_PER_SECTION)); -#endif -} -#endif /* !CONFIG_SPARSEMEM_VMEMMAP */ - /* * mem_init() marks the free areas in the mem_map and tells us how much memory * is free. This is done after various parts of the system have claimed their @@ -510,9 +445,6 @@ void __init mem_init(void) set_max_mapnr(max_pfn - PHYS_PFN_OFFSET); -#ifndef CONFIG_SPARSEMEM_VMEMMAP - free_unused_memmap(); -#endif /* this will put all unused low memory onto the freelists */ memblock_free_all(); |