[PATCH 34/50] memblock: Add memblock_find_in_range()
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From: Yinghai Lu on 13 Jul 2010 03:30 it is a wrapper for memblock_find_base make it more easy for x86 to use memblock. ( rebase ) x86 early_res is using find/reserve pattern instead of alloc. keep it in weak version, so later We can use x86 own version if needed. also We need it in mm/memblock.c, so one caller mm/page_alloc.c could get compiled -v2: Change name to memblock_find_in_range() according to Michael Ellerman -v3: Add generic weak version __memblock_find_in_range() so keep the path for fallback to x86 version that handle from low -v4: use 0 for failing path -v5: use MEMBLOCK_ERROR again -v6: remove __memblock_find_in_range() Signed-off-by: Yinghai Lu <yinghai(a)kernel.org> --- include/linux/memblock.h | 2 ++ mm/memblock.c | 8 ++++++++ 2 files changed, 10 insertions(+), 0 deletions(-) diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 751a4eb..61b22eb 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -48,6 +48,8 @@ extern struct memblock_region memblock_reserved_init_regions[]; #define memblock_dbg(fmt, ...) \ if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) +u64 memblock_find_in_range(u64 start, u64 end, u64 size, u64 align); + extern void __init memblock_init(void); extern void __init memblock_analyze(void); extern long memblock_add(phys_addr_t base, phys_addr_t size); diff --git a/mm/memblock.c b/mm/memblock.c index 7471dac..ca7de91 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -156,6 +156,14 @@ static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align return MEMBLOCK_ERROR; } +/* + * Find a free area with specified alignment in a specific range. + */ +u64 __init __weak memblock_find_in_range(u64 start, u64 end, u64 size, u64 align) +{ + return memblock_find_base(size, align, start, end); +} + static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r) { unsigned long i; -- 1.6.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |