From: Yury Norov <yury.norov@gmail.com>
Date: Sun, 23 Jan 2022 10:38:41 -0800
Subject: qed: rework qed_rdma_bmap_free()
Patch-mainline: v5.19-rc1
Git-commit: 64b87c1a1875803296a47b6b03f73dd2b292932f
References: jsc#PED-1526

qed_rdma_bmap_free() is mostly an opencoded version of printk("%*pb").
Using %*pb format simplifies the code, and helps to avoid inefficient
usage of bitmap_weight().

While here, reorganize logic to avoid calculating bmap weight if check
is false.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/qlogic/qed/qed_rdma.c |   43 ++++++++---------------------
 1 file changed, 13 insertions(+), 30 deletions(-)

--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
@@ -319,44 +319,27 @@ free_rdma_dev:
 void qed_rdma_bmap_free(struct qed_hwfn *p_hwfn,
 			struct qed_bmap *bmap, bool check)
 {
-	int weight = bitmap_weight(bmap->bitmap, bmap->max_count);
-	int last_line = bmap->max_count / (64 * 8);
-	int last_item = last_line * 8 +
-	    DIV_ROUND_UP(bmap->max_count % (64 * 8), 64);
-	u64 *pmap = (u64 *)bmap->bitmap;
-	int line, item, offset;
-	u8 str_last_line[200] = { 0 };
+	unsigned int bit, weight, nbits;
+	unsigned long *b;
 
-	if (!weight || !check)
+	if (!check)
+		goto end;
+
+	weight = bitmap_weight(bmap->bitmap, bmap->max_count);
+	if (!weight)
 		goto end;
 
 	DP_NOTICE(p_hwfn,
 		  "%s bitmap not free - size=%d, weight=%d, 512 bits per line\n",
 		  bmap->name, bmap->max_count, weight);
 
-	/* print aligned non-zero lines, if any */
-	for (item = 0, line = 0; line < last_line; line++, item += 8)
-		if (bitmap_weight((unsigned long *)&pmap[item], 64 * 8))
+	for (bit = 0; bit < bmap->max_count; bit += 512) {
+		b =  bmap->bitmap + BITS_TO_LONGS(bit);
+		nbits = min(bmap->max_count - bit, 512U);
+
+		if (!bitmap_empty(b, nbits))
 			DP_NOTICE(p_hwfn,
-				  "line 0x%04x: 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
-				  line,
-				  pmap[item],
-				  pmap[item + 1],
-				  pmap[item + 2],
-				  pmap[item + 3],
-				  pmap[item + 4],
-				  pmap[item + 5],
-				  pmap[item + 6], pmap[item + 7]);
-
-	/* print last unaligned non-zero line, if any */
-	if ((bmap->max_count % (64 * 8)) &&
-	    (bitmap_weight((unsigned long *)&pmap[item],
-			   bmap->max_count - item * 64))) {
-		offset = sprintf(str_last_line, "line 0x%04x: ", line);
-		for (; item < last_item; item++)
-			offset += sprintf(str_last_line + offset,
-					  "0x%016llx ", pmap[item]);
-		DP_NOTICE(p_hwfn, "%s\n", str_last_line);
+				  "line 0x%04x: %*pb\n", bit / 512, nbits, b);
 	}
 
 end: