The 'time' command runs and reports execution time of commands.
Sample usage:
u-boot# time crc 0x1000 1000
CRC32 for 1000 ... 1fff == ae94dc4b
time: 0.004 seconds, 4 ticks
Signed-off-by: Che-Liang Chiou clch...@chromium.org
---
Changes since V2
- Remove CONFIG_CMD_TIME from config_cmd_all.h
Changes Since V1
- Switch unsigned long int to ulong to match function prototype
- Remove unnecessary 'ifdef CONFIG_SYS_HZ' guard
- Factor out codes into the run_command_and_time_it() function
README|1 +
common/Makefile |1 +
common/cmd_time.c | 90 +
3 files changed, 92 insertions(+), 0 deletions(-)
create mode 100644 common/cmd_time.c
diff --git a/README b/README
index 0868531..246e76f 100644
--- a/README
+++ b/README
@@ -783,6 +783,7 @@ The following options need to be configured:
CONFIG_CMD_SOURCE source command Support
CONFIG_CMD_SPI * SPI serial bus support
CONFIG_CMD_TFTPSRV * TFTP transfer in server mode
+ CONFIG_CMD_TIME * run command and report execution time
CONFIG_CMD_USB * USB support
CONFIG_CMD_CDP * Cisco Discover Protocol support
CONFIG_CMD_FSL * Microblaze FSL support
diff --git a/common/Makefile b/common/Makefile
index 371a0d9..fdc4206 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -147,6 +147,7 @@ COBJS-$(CONFIG_CMD_SPI) += cmd_spi.o
COBJS-$(CONFIG_CMD_SPIBOOTLDR) += cmd_spibootldr.o
COBJS-$(CONFIG_CMD_STRINGS) += cmd_strings.o
COBJS-$(CONFIG_CMD_TERMINAL) += cmd_terminal.o
+COBJS-$(CONFIG_CMD_TIME) += cmd_time.o
COBJS-$(CONFIG_SYS_HUSH_PARSER) += cmd_test.o
COBJS-$(CONFIG_CMD_TSI148) += cmd_tsi148.o
COBJS-$(CONFIG_CMD_UBI) += cmd_ubi.o
diff --git a/common/cmd_time.c b/common/cmd_time.c
new file mode 100644
index 000..c937ae4
--- /dev/null
+++ b/common/cmd_time.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include common.h
+#include command.h
+
+/*
+ * TODO(clchiou): This function actually minics the bottom-half of the
+ * run_command() function. Since this function has ARM-dependent timer
+ * codes, we cannot merge it with the run_command() for now.
+ */
+static int run_command_and_time_it(int flag, int argc, char * const argv[],
+ ulong *cycles)
+{
+ cmd_tbl_t *cmdtp = find_cmd(argv[0]);
+ int retval = 0;
+
+ if (!cmdtp) {
+ printf(%s: command not found\n, argv[0]);
+ return 1;
+ }
+ if (argc cmdtp-maxargs)
+ return cmd_usage(cmdtp);
+
+ /*
+* TODO(clchiou): get_timer_masked() is only defined in certain ARM
+* boards. We could use the new timer API that Graeme is proposing
+* so that this piece of code would be arch-independent.
+*/
+ *cycles = get_timer_masked();
+ retval = cmdtp-cmd(cmdtp, flag, argc, argv);
+ *cycles = get_timer_masked() - *cycles;
+
+ return retval;
+}
+
+static void report_time(ulong cycles)
+{
+ ulong minutes, seconds, milliseconds;
+ ulong total_seconds, remainder;
+
+ total_seconds = cycles / CONFIG_SYS_HZ;
+ remainder = cycles % CONFIG_SYS_HZ;
+ minutes = total_seconds / 60;
+ seconds = total_seconds % 60;
+ /* approximate millisecond value */
+ milliseconds = (remainder * 1000 + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ;
+
+ printf(\ntime:);
+ if (minutes)
+ printf( %lu minutes,, minutes);
+ printf( %lu.%03lu seconds, %lu ticks\n,
+ seconds, milliseconds, cycles);
+}
+
+static int do_time(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ ulong cycles = 0;
+ int retval = 0;
+
+ if (argc == 1)
+ return cmd_usage(cmdtp);
+
+ retval = run_command_and_time_it(0, argc - 1, argv + 1, cycles);
+ report_time(cycles);
+
+ return retval;
+}
+
+U_BOOT_CMD(time, CONFIG_SYS_MAXARGS, 0, do_time,
+ run commands and summarize
