net/fq_impl: 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.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/c7bf099af07eb497b02d195906ee8c11fea3b3bd.1657377335.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/net/fq_impl.h b/include/net/fq_impl.h
index a5f67a2..524b510 100644 (file)
--- a/include/net/fq_impl.h
+++ b/include/net/fq_impl.h
@@ -358,8 +358,7 @@ static int fq_init(struct fq *fq, int flows_cnt)
        if (!fq->flows)
                return -ENOMEM;
 
-       fq->flows_bitmap = kcalloc(BITS_TO_LONGS(fq->flows_cnt), sizeof(long),
-                                  GFP_KERNEL);
+       fq->flows_bitmap = bitmap_zalloc(fq->flows_cnt, GFP_KERNEL);
        if (!fq->flows_bitmap) {
                kvfree(fq->flows);
                fq->flows = NULL;
@@ -383,7 +382,7 @@ static void fq_reset(struct fq *fq,
        kvfree(fq->flows);
        fq->flows = NULL;
 
-       kfree(fq->flows_bitmap);
+       bitmap_free(fq->flows_bitmap);
        fq->flows_bitmap = NULL;
 }