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csky: Use the bitmap API to allocate bitmaps 

Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.

It is less verbose and it improves the semantic.

While at it, turn a bitmap_clear() into an equivalent bitmap_zero(). It is
also less verbose.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Guo Ren <guoren@kernel.org>
This commit is contained in:
Christophe JAILLET 2022-07-04 21:06:46 +02:00 committed by Guo Ren
parent a2310c74d4
commit 49a1a3cf73
1 changed files with 2 additions and 3 deletions
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5
arch/csky/mm/asid.c
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@ -27,7 +27,7 @@ static void flush_context(struct asid_info *info)
u64 asid;
/* Update the list of reserved ASIDs and the ASID bitmap. */
bitmap_clear(info->map, 0, NUM_CTXT_ASIDS(info));
bitmap_zero(info->map, NUM_CTXT_ASIDS(info));
for_each_possible_cpu(i) {
asid = atomic64_xchg_relaxed(&active_asid(info, i), 0);
@ -178,8 +178,7 @@ int asid_allocator_init(struct asid_info *info,
*/
WARN_ON(NUM_CTXT_ASIDS(info) - 1 <= num_possible_cpus());
atomic64_set(&info->generation, ASID_FIRST_VERSION(info));
info->map = kcalloc(BITS_TO_LONGS(NUM_CTXT_ASIDS(info)),
sizeof(*info->map), GFP_KERNEL);
info->map = bitmap_zalloc(NUM_CTXT_ASIDS(info), GFP_KERNEL);
if (!info->map)
return -ENOMEM;