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sparc: use bitmap_find_next_zero_area

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Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita
2009-12-15 16:48:30 -08:00
committed by Linus Torvalds
parent 43ff8b6085
commit e756fd8080
2 changed files with 9 additions and 24 deletions
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16
arch/sparc/kernel/ldc.c
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@@ -14,6 +14,7 @@
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/init.h>
#include <linux/bitmap.h>
#include <asm/hypervisor.h>
#include <asm/iommu.h>
@@ -1875,7 +1876,7 @@ EXPORT_SYMBOL(ldc_read);
static long arena_alloc(struct ldc_iommu *iommu, unsigned long npages)
{
struct iommu_arena *arena = &iommu->arena;
unsigned long n, i, start, end, limit;
unsigned long n, start, end, limit;
int pass;
limit = arena->limit;
@@ -1883,7 +1884,7 @@ static long arena_alloc(struct ldc_iommu *iommu, unsigned long npages)
pass = 0;
again:
n = find_next_zero_bit(arena->map, limit, start);
n = bitmap_find_next_zero_area(arena->map, limit, start, npages, 0);
end = n + npages;
if (unlikely(end >= limit)) {
if (likely(pass < 1)) {
@@ -1896,16 +1897,7 @@ again:
return -1;
}
}
for (i = n; i < end; i++) {
if (test_bit(i, arena->map)) {
start = i + 1;
goto again;
}
}
for (i = n; i < end; i++)
__set_bit(i, arena->map);
bitmap_set(arena->map, n, npages);
arena->hint = end;