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Subject[PATCH 04/33] lmb: Seperate __lmb_find_base() from __lmb_alloc_base()
Date
So We can construct one generic __find_lmb_area() later

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
mm/lmb.c | 21 +++++++++++++++++----
1 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/mm/lmb.c b/mm/lmb.c
index 65b62dc..392d805 100644
--- a/mm/lmb.c
+++ b/mm/lmb.c
@@ -393,7 +393,7 @@ u64 __init lmb_alloc_base(u64 size, u64 align, u64 max_addr)
return alloc;
}

-u64 __init __lmb_alloc_base(u64 size, u64 align, u64 max_addr)
+static u64 __init __lmb_find_base(u64 size, u64 align, u64 max_addr)
{
long i, j;
u64 base = 0;
@@ -426,8 +426,6 @@ u64 __init __lmb_alloc_base(u64 size, u64 align, u64 max_addr)
j = lmb_overlaps_region(&lmb.reserved, base, size);
if (j < 0) {
/* this area isn't reserved, take it */
- if (lmb_add_region(&lmb.reserved, base, size) < 0)
- return 0;
return base;
}
res_base = lmb.reserved.region[j].base;
@@ -436,7 +434,22 @@ u64 __init __lmb_alloc_base(u64 size, u64 align, u64 max_addr)
base = lmb_align_down(res_base - size, align);
}
}
- return 0;
+ return -1ULL;
+}
+
+u64 __init __lmb_alloc_base(u64 size, u64 align, u64 max_addr)
+{
+ u64 base;
+
+ base = __lmb_find_base(size, align, max_addr);
+
+ if (base == -1ULL)
+ return 0;
+
+ if (lmb_add_region(&lmb.reserved, base, size) < 0)
+ return 0;
+
+ return base;
}

/* You must call lmb_analyze() before this. */
--
1.6.4.2


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