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    Subject[PATCH 11/37] x86,lmb: Add lmb_reserve_area/lmb_free_area
    Date
    they are wrappers for core versions.
    they are taking start/end/name instead of base/size.
    will make x86 conversion more easy

    could add more debug print out

    -v2: change get_max_mapped() to lmb.default_alloc_limit according to Michael
    Ellerman and Ben
    change to lmb_reserve_area and lmb_free_area according to Michael Ellerman
    -v3: call check_and_double after reserve/free, so could avoid to use
    find_lmb_area. Suggested by Michael Ellerman

    Signed-off-by: Yinghai Lu <yinghai@kernel.org>
    ---
    arch/x86/include/asm/lmb.h | 4 ++++
    arch/x86/mm/lmb.c | 27 +++++++++++++++++++++++++++
    2 files changed, 31 insertions(+), 0 deletions(-)

    diff --git a/arch/x86/include/asm/lmb.h b/arch/x86/include/asm/lmb.h
    index 2f06714..bc85c1e 100644
    --- a/arch/x86/include/asm/lmb.h
    +++ b/arch/x86/include/asm/lmb.h
    @@ -6,4 +6,8 @@
    u64 lmb_find_area_size(u64 start, u64 *sizep, u64 align);
    void lmb_to_bootmem(u64 start, u64 end);

    +void lmb_reserve_area(u64 start, u64 end, char *name);
    +void lmb_free_area(u64 start, u64 end);
    +void lmb_add_memory(u64 start, u64 end);
    +
    #endif
    diff --git a/arch/x86/mm/lmb.c b/arch/x86/mm/lmb.c
    index 37a05e2..5d0b008 100644
    --- a/arch/x86/mm/lmb.c
    +++ b/arch/x86/mm/lmb.c
    @@ -117,3 +117,30 @@ void __init lmb_to_bootmem(u64 start, u64 end)
    lmb.reserved.cnt = 0;
    }
    #endif
    +
    +void __init lmb_add_memory(u64 start, u64 end)
    +{
    + lmb_add(start, end - start);
    +}
    +
    +void __init lmb_reserve_area(u64 start, u64 end, char *name)
    +{
    + if (start == end)
    + return;
    +
    + if (WARN_ONCE(start > end, "lmb_reserve_area: wrong range [%#llx, %#llx]\n", start, end))
    + return;
    +
    + lmb_reserve(start, end - start);
    +}
    +
    +void __init lmb_free_area(u64 start, u64 end)
    +{
    + if (start == end)
    + return;
    +
    + if (WARN_ONCE(start > end, "lmb_free_area: wrong range [%#llx, %#llx]\n", start, end))
    + return;
    +
    + lmb_free(start, end - start);
    +}
    --
    1.6.4.2


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