1 files changed, 57 insertions, 0 deletions
diff --git a/commands/time.c b/commands/time.c
new file mode 100644
index 0000000000..9a769451aa
--- /dev/null
+++ b/commands/time.c
@@ -0,0 +1,57 @@
+#include <common.h>
+#include <command.h>
+#include <clock.h>
+#include <asm-generic/div64.h>
+#include <malloc.h>
+
+static int do_time(struct command *cmdtp, int argc, char *argv[])
+{
+	int i;
+	unsigned char *buf;
+	u64 start, end, diff64;
+	unsigned long diff;
+	int len = 0;
+
+	if (argc < 2)
+		return COMMAND_ERROR_USAGE;
+
+	for (i = 1; i < argc; i++)
+		len += strlen(argv[i]) + 1;
+
+	buf = xzalloc(len);
+
+	for (i = 1; i < argc; i++) {
+		strcat(buf, argv[i]);
+		strcat(buf, " ");
+	}
+
+	start = get_time_ns();
+
+	run_command(buf, 0);
+
+	end = get_time_ns();
+
+	diff64 = end - start;
+
+	do_div(diff64, 1000000);
+
+	diff = diff64;
+
+	printf("time: %ldms\n", diff);
+
+	free(buf);
+
+	return 0;
+}
+
+BAREBOX_CMD_HELP_START(time)
+BAREBOX_CMD_HELP_USAGE("time <command>\n")
+BAREBOX_CMD_HELP_SHORT("note: This command depends on <command> being interruptible,\n")
+BAREBOX_CMD_HELP_SHORT("Otherwise the timer may overrun resulting in incorrect results\n")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(time)
+	.cmd		= do_time,
+	.usage		= "measure execution time of a command",
+	BAREBOX_CMD_HELP(cmd_time_help)
+BAREBOX_CMD_END