[U-Boot] [PATCH v3] fs/fs.c: do_fsload: measure throughput

[Andreas Bießmann]

This patch adds time measurement and throughput calculation for all supported
fsload commands.

The output of ext2load changes from

---8<---
1830666 bytes read
--->8---

to

---8<---
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

since v2:
 * rebase on top of 045fa1e1142552799ad3203e9e0bc22a11e866ea
   Now there is some more overhead in the measurement caused by the respective
   fs-type functions (detect fs-type, eventually do mount and so on).
   Nevertheless I think such a measurement is good for further improvements
   like increasing throughput by whatever measures.

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

diff --git a/fs/fs.c b/fs/fs.c
index 23ffa25..9f1cfed 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -246,6 +246,7 @@ int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 	unsigned long pos;
 	int len_read;
 	char buf[12];
+	unsigned long time;
 
 	if (argc < 5)
 		return CMD_RET_USAGE;
@@ -280,11 +281,19 @@ int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 	else
 		pos = 0;
 
+	time = get_timer(0);
 	len_read = fs_read(filename, addr, pos, bytes);
+	time = get_timer(time);
 	if (len_read <= 0)
 		return 1;
 
-	printf("%d bytes read\n", len_read);
+	printf("%d bytes read in %lu ms", len_read, time);
+	if (time > 0) {
+		puts(" (");
+		print_size(len_read / time * 1000, "/s");
+		puts(")");
+	}
+	puts("\n");
 
 	sprintf(buf, "0x%x", len_read);
 	setenv("filesize", buf);
-- 
1.7.10.4