From e82d42be24bd5d75bf6f81045636e6ca95ab55f2 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Wed, 25 Aug 2010 13:39:17 -0700 Subject: [PATCH] x86, memblock: Add memblock_x86_memory_in_range() It will return memory size in specified range according to memblock.memory.region Try to share some code with memblock_x86_free_memory_in_range() by passing get_free to __memblock_x86_memory_in_range(). -v2: Ben want _in_range in the name instead of size Signed-off-by: Yinghai Lu Cc: Benjamin Herrenschmidt Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/memblock.h | 1 + arch/x86/mm/memblock.c | 18 +++++++++++++++++- 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/memblock.h b/arch/x86/include/asm/memblock.h index fc3c230812e6..2c304bb6e072 100644 --- a/arch/x86/include/asm/memblock.h +++ b/arch/x86/include/asm/memblock.h @@ -16,5 +16,6 @@ void memblock_x86_register_active_regions(int nid, unsigned long start_pfn, u64 memblock_x86_hole_size(u64 start, u64 end); u64 memblock_x86_find_in_range_node(int nid, u64 start, u64 end, u64 size, u64 align); u64 memblock_x86_free_memory_in_range(u64 addr, u64 limit); +u64 memblock_x86_memory_in_range(u64 addr, u64 limit); #endif diff --git a/arch/x86/mm/memblock.c b/arch/x86/mm/memblock.c index 30d60cf29ce3..32ddad5dc932 100644 --- a/arch/x86/mm/memblock.c +++ b/arch/x86/mm/memblock.c @@ -211,7 +211,7 @@ void __init memblock_x86_to_bootmem(u64 start, u64 end) } #endif -u64 __init memblock_x86_free_memory_in_range(u64 addr, u64 limit) +static u64 __init __memblock_x86_memory_in_range(u64 addr, u64 limit, bool get_free) { int i, count; struct range *range; @@ -240,6 +240,10 @@ u64 __init memblock_x86_free_memory_in_range(u64 addr, u64 limit) } subtract_range(range, count, 0, addr); subtract_range(range, count, limit, -1ULL); + + /* Subtract memblock.reserved.region in range ? */ + if (!get_free) + goto sort_and_count_them; for_each_memblock(reserved, r) { final_start = PFN_DOWN(r->base); final_end = PFN_UP(r->base + r->size); @@ -250,6 +254,8 @@ u64 __init memblock_x86_free_memory_in_range(u64 addr, u64 limit) subtract_range(range, count, final_start, final_end); } + +sort_and_count_them: nr_range = clean_sort_range(range, count); free_size = 0; @@ -259,6 +265,16 @@ u64 __init memblock_x86_free_memory_in_range(u64 addr, u64 limit) return free_size << PAGE_SHIFT; } +u64 __init memblock_x86_free_memory_in_range(u64 addr, u64 limit) +{ + return __memblock_x86_memory_in_range(addr, limit, true); +} + +u64 __init memblock_x86_memory_in_range(u64 addr, u64 limit) +{ + return __memblock_x86_memory_in_range(addr, limit, false); +} + void __init memblock_x86_reserve_range(u64 start, u64 end, char *name) { if (start == end) -- 2.20.1