[PATCH] Add 'time' command to show execution of sub command.

[Peter Barada]

Add 'time <cmd> <args>' which executes <cmd> with <args> and shows the
execution time in seconds.  Requires get_timer().

Signed-off-by: Peter Barada <peter.barada at gmail.com>
CC: Wolfgang Denk <wd at denx.de>

---
 README                   |    1 +
 common/cmd_misc.c        |   41 +++++++++++++++++++++++++++++++++++++++++
 include/config_cmd_all.h |    1 +
 3 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/README b/README
index c05c40a..94743af 100644
--- a/README
+++ b/README
@@ -787,6 +787,7 @@ The following options need to be configured:
 					  (requires CONFIG_CMD_MEMORY)
 		CONFIG_CMD_SOURCE	  "source" command Support
 		CONFIG_CMD_SPI		* SPI serial bus support
+		CONFIG_CMD_TIME		  times execution of u-boot command
 		CONFIG_CMD_TFTPSRV	* TFTP transfer in server mode
 		CONFIG_CMD_TFTPPUT	* TFTP put command (upload)
 		CONFIG_CMD_TIME		* run command and report execution time
diff --git a/common/cmd_misc.c b/common/cmd_misc.c
index 061b1bb..d789d44 100644
--- a/common/cmd_misc.c
+++ b/common/cmd_misc.c
@@ -53,3 +53,44 @@ U_BOOT_CMD(
 	"N\n"
 	"    - delay execution for N seconds (N is _decimal_ !!!)"
 );
+
+#ifdef CONFIG_CMD_TIME
+int do_time(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	ulong start;
+	ulong delta;
+	cmd_tbl_t *cmdtp2;
+	int ret;
+	unsigned int secs, msecs;
+
+	if (argc < 2)
+		return cmd_usage(cmdtp);
+
+	cmdtp2 = find_cmd(argv[1]);
+	if (!cmdtp2) {
+		printf("Unknown command '%s' - try help\n", argv[1]);
+		return 1;
+	}
+
+	start = get_timer(0);
+
+	/* Execute command */
+	ret = (cmdtp2->cmd)(cmdtp2, flag, argc-1, argv+1);
+
+	delta = get_timer(start);
+
+	secs = (delta * 1000) / CONFIG_SYS_HZ;
+	msecs = secs % 1000;
+	secs /= 1000;
+
+	printf("'%s' took %u.%03u seconds\n", argv[1], secs, msecs);
+	return ret;
+}
+
+U_BOOT_CMD(
+	time ,    CONFIG_SYS_MAXARGS,    1,     do_time,
+	"time execution of command",
+	"command to time\n"
+	"    - time execution of command in seconds"
+);
+#endif
diff --git a/include/config_cmd_all.h b/include/config_cmd_all.h
index 9716f9c..77adc3d 100644
--- a/include/config_cmd_all.h
+++ b/include/config_cmd_all.h
@@ -82,6 +82,7 @@
 #define CONFIG_CMD_SOURCE	/* "source" command support	*/
 #define CONFIG_CMD_SPI		/* SPI utility			*/
 #define CONFIG_CMD_TERMINAL	/* built-in Serial Terminal	*/
+#define CONFIG_CMD_TIME		/* time execution of u-boot cmd */
 #define CONFIG_CMD_UBI		/* UBI Support			*/
 #define CONFIG_CMD_UBIFS	/* UBIFS Support		*/
 #define CONFIG_CMD_UNIVERSE	/* Tundra Universe Support	*/
-- 
1.7.1



-- 
Peter Barada
peter.barada at logicpd.com