[U-Boot] [PATCH v2] common/cmd_ext_common: measure throughput

[Andreas Bießmann]

This patch adds time measurement and throughput calculation for the ext2load and
ext4load commands.

The output of ext2load changes from

---8<---
Loading file "/boot/uImage" from mmc device 0:1
1830666 bytes read
--->8---

to

---8<---
Loading file "/boot/uImage" from mmc device 0:1
1830666 bytes read in 237 ms (7.4 MiB/s)
--->8---

Signed-off-by: Andreas Bießmann <andreas.devel at googlemail.com>
---
since v1:
 * use 'time' instead of 'time_start' as suggested by Wolfgang

 common/cmd_ext_common.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/common/cmd_ext_common.c b/common/cmd_ext_common.c
index 1952f4d..63f1b1f 100644
--- a/common/cmd_ext_common.c
+++ b/common/cmd_ext_common.c
@@ -76,6 +76,7 @@ int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc,
 	char buf[12];
 	unsigned long count;
 	const char *addr_str;
+	unsigned long time;
 
 	count = 0;
 	addr = simple_strtoul(argv[3], NULL, 16);
@@ -135,18 +136,26 @@ int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc,
 	if ((count < filelen) && (count != 0))
 		filelen = count;
 
+	time = get_timer(0);
 	if (ext4fs_read((char *)addr, filelen) != filelen) {
 		printf("** Unable to read \"%s\" from %s %d:%d **\n",
 		       filename, argv[1], dev, part);
 		ext4fs_close();
 		goto fail;
 	}
+	time = get_timer(time);
 
 	ext4fs_close();
 	/* Loading ok, update default load address */
 	load_addr = addr;
 
-	printf("%d bytes read\n", filelen);
+	printf("%d bytes read in %lu ms", filelen, time);
+	if (time > 0) {
+		puts(" (");
+		print_size(filelen / time * 1000, "/s");
+		puts(")");
+	}
+	puts("\n");
 	sprintf(buf, "%X", filelen);
 	setenv("filesize", buf);
 
-- 
1.7.10.4