linux-kernel - [PATCH v4 11/12] kmemleak: use seq_hex

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Message-Id: <1409840819-18976-12-git-send-email-andriy.shevchenko@linux.intel.com>
Date:	Thu,  4 Sep 2014 17:26:58 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Tadeusz Struk <tadeusz.struk@...el.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Helge Deller <deller@....de>,
	Ingo Tuchscherer <ingo.tuchscherer@...ibm.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-kernel@...r.kernel.org, Joe Perches <joe@...ches.com>,
	Marek Vasut <marex@...x.de>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Vladimir Kondratiev <qca_vkondrat@....qualcomm.com>,
	Benjamin Romer <benjamin.romer@...sys.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Randy Dunlap <rdunlap@...radead.org>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v4 11/12] kmemleak: use seq_hex_dump() to dump buffers

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

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

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 3cda50c..bc14fdc 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -291,23 +291,14 @@ 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(object->size, (size_t)(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);
 }
 
 /*
-- 
2.1.0

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