[PATCH v5 5/6] kmemleak: use seq_hex_dump() to dump buffers

From: Andy Shevchenko
Date: Tue Jul 07 2015 - 13:06:41 EST


Instead of custom approach let's use recently introduced seq_hex_dump() helper.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
mm/kmemleak.c | 21 ++++++---------------
1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index cf79f11..b034c62 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -302,23 +302,14 @@ static void hex_dump_object(struct seq_file *seq,
struct kmemleak_object *object)
{
const u8 *ptr = (const u8 *)object->pointer;
- int i, len, remaining;
- unsigned char linebuf[HEX_ROW_SIZE * 5];
+ size_t len;

/* limit the number of lines to HEX_MAX_LINES */
- remaining = len =
- min(object->size, (size_t)(HEX_MAX_LINES * HEX_ROW_SIZE));
-
- seq_printf(seq, " hex dump (first %d bytes):\n", len);
- for (i = 0; i < len; i += HEX_ROW_SIZE) {
- int linelen = min(remaining, HEX_ROW_SIZE);
-
- remaining -= HEX_ROW_SIZE;
- hex_dump_to_buffer(ptr + i, linelen, HEX_ROW_SIZE,
- HEX_GROUP_SIZE, linebuf, sizeof(linebuf),
- HEX_ASCII);
- seq_printf(seq, " %s\n", linebuf);
- }
+ len = min_t(size_t, object->size, HEX_MAX_LINES * HEX_ROW_SIZE);
+
+ seq_printf(seq, " hex dump (first %zu bytes):\n", len);
+ seq_hex_dump(seq, " ", DUMP_PREFIX_NONE, HEX_ROW_SIZE,
+ HEX_GROUP_SIZE, ptr, len, HEX_ASCII);
}

/*
--
2.1.4

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