diff options
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/greybus/tools/.gitignore | 2 | ||||
| -rw-r--r-- | drivers/staging/greybus/tools/Android.mk | 10 | ||||
| -rw-r--r-- | drivers/staging/greybus/tools/Makefile | 33 | ||||
| -rw-r--r-- | drivers/staging/greybus/tools/README.loopback | 198 | ||||
| -rwxr-xr-x | drivers/staging/greybus/tools/lbtest | 169 | ||||
| -rw-r--r-- | drivers/staging/greybus/tools/loopback_test.c | 979 |
6 files changed, 0 insertions, 1391 deletions
diff --git a/drivers/staging/greybus/tools/.gitignore b/drivers/staging/greybus/tools/.gitignore deleted file mode 100644 index 1fd364aba774..000000000000 --- a/drivers/staging/greybus/tools/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -loopback_test diff --git a/drivers/staging/greybus/tools/Android.mk b/drivers/staging/greybus/tools/Android.mk deleted file mode 100644 index fdadbf611757..000000000000 --- a/drivers/staging/greybus/tools/Android.mk +++ /dev/null @@ -1,10 +0,0 @@ -LOCAL_PATH:= $(call my-dir) - -include $(CLEAR_VARS) - -LOCAL_SRC_FILES:= loopback_test.c -LOCAL_MODULE_TAGS := optional -LOCAL_MODULE := gb_loopback_test - -include $(BUILD_EXECUTABLE) - diff --git a/drivers/staging/greybus/tools/Makefile b/drivers/staging/greybus/tools/Makefile deleted file mode 100644 index a3bbd73171f2..000000000000 --- a/drivers/staging/greybus/tools/Makefile +++ /dev/null @@ -1,33 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -ifeq ($(strip $(V)), 1) - Q = -else - Q = @ -endif - -CFLAGS += -std=gnu99 -Wall -Wextra -g \ - -D_GNU_SOURCE \ - -Wno-unused-parameter \ - -Wmaybe-uninitialized \ - -Wredundant-decls \ - -Wcast-align \ - -Wsign-compare \ - -Wno-missing-field-initializers \ - -Wno-shift-negative-value - -CC := $(CROSS_COMPILE)gcc - -TOOLS = loopback_test - -all: $(TOOLS) - -%.o: %.c ../greybus_protocols.h - @echo ' TARGET_CC $@' - $(Q)$(CC) $(CFLAGS) -c $< -o $@ - -loopback_%: loopback_%.o - @echo ' TARGET_LD $@' - $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@ - -clean:: - rm -f *.o $(TOOLS) diff --git a/drivers/staging/greybus/tools/README.loopback b/drivers/staging/greybus/tools/README.loopback deleted file mode 100644 index 070a510cbe7c..000000000000 --- a/drivers/staging/greybus/tools/README.loopback +++ /dev/null @@ -1,198 +0,0 @@ - - - 1 - LOOPBACK DRIVER - -The driver implements the main logic of the loopback test and provides -sysfs files to configure the test and retrieve the results. -A user could run a test without the need of the test application given -that he understands the sysfs interface of the loopback driver. - -The loopback kernel driver needs to be loaded and at least one module -with the loopback feature enabled must be present for the sysfs files to be -created and for the loopback test application to be able to run. - -To load the module: -# modprobe gb-loopback - - -When the module is probed, New files are available on the sysfs -directory of the detected loopback device. -(typically under "/sys/bus/graybus/devices"). - -Here is a short summary of the sysfs interface files that should be visible: - -* Loopback Configuration Files: - async - Use asynchronous operations. - iteration_max - Number of tests iterations to perform. - size - payload size of the transfer. - timeout - The number of microseconds to give an individual - asynchronous request before timing out. - us_wait - Time to wait between 2 messages - type - By writing the test type to this file, the test starts. - Valid tests are: - 0 stop the test - 2 - ping - 3 - transfer - 4 - sink - -* Loopback feedback files: - error - number of errors that have occurred. - iteration_count - Number of iterations performed. - requests_completed - Number of requests successfully completed. - requests_timedout - Number of requests that have timed out. - timeout_max - Max allowed timeout - timeout_min - Min allowed timeout. - -* Loopback result files: - apbridge_unipro_latency_avg - apbridge_unipro_latency_max - apbridge_unipro_latency_min - gpbridge_firmware_latency_avg - gpbridge_firmware_latency_max - gpbridge_firmware_latency_min - requests_per_second_avg - requests_per_second_max - requests_per_second_min - latency_avg - latency_max - latency_min - throughput_avg - throughput_max - throughput_min - - - - 2 - LOOPBACK TEST APPLICATION - -The loopback test application manages and formats the results provided by -the loopback kernel module. The purpose of this application -is to: - - Start and manage multiple loopback device tests concurrently. - - Calculate the aggregate results for multiple devices. - - Gather and format test results (csv or human readable). - -The best way to get up to date usage information for the application is -usually to pass the "-h" parameter. -Here is the summary of the available options: - - Mandatory arguments - -t must be one of the test names - sink, transfer or ping - -i iteration count - the number of iterations to run the test over - Optional arguments - -S sysfs location - location for greybus 'endo' entries default /sys/bus/greybus/devices/ - -D debugfs location - location for loopback debugfs entries default /sys/kernel/debug/gb_loopback/ - -s size of data packet to send during test - defaults to zero - -m mask - a bit mask of connections to include example: -m 8 = 4th connection -m 9 = 1st and 4th connection etc - default is zero which means broadcast to all connections - -v verbose output - -d debug output - -r raw data output - when specified the full list of latency values are included in the output CSV - -p porcelain - when specified printout is in a user-friendly non-CSV format. This option suppresses writing to CSV file - -a aggregate - show aggregation of all enabled devies - -l list found loopback devices and exit. - -x Async - Enable async transfers. - -o Timeout - Timeout in microseconds for async operations. - - - - 3 - REAL WORLD EXAMPLE USAGES - - 3.1 - Using the driver sysfs files to run a test on a single device: - -* Run a 1000 transfers of a 100 byte packet. Each transfer is started only -after the previous one finished successfully: - echo 0 > /sys/bus/greybus/devices/1-2.17/type - echo 0 > /sys/bus/greybus/devices/1-2.17/async - echo 2000 > /sys/bus/greybus/devices/1-2.17/us_wait - echo 100 > /sys/bus/greybus/devices/1-2.17/size - echo 1000 > /sys/bus/greybus/devices/1-2.17/iteration_max - echo 0 > /sys/bus/greybus/devices/1-2.17/mask - echo 200000 > /sys/bus/greybus/devices/1-2.17/timeout - echo 3 > /sys/bus/greybus/devices/1-2.17/type - -* Run a 1000 transfers of a 100 byte packet. Transfers are started without -waiting for the previous one to finish: - echo 0 > /sys/bus/greybus/devices/1-2.17/type - echo 3 > /sys/bus/greybus/devices/1-2.17/async - echo 0 > /sys/bus/greybus/devices/1-2.17/us_wait - echo 100 > /sys/bus/greybus/devices/1-2.17/size - echo 1000 > /sys/bus/greybus/devices/1-2.17/iteration_max - echo 0 > /sys/bus/greybus/devices/1-2.17/mask - echo 200000 > /sys/bus/greybus/devices/1-2.17/timeout - echo 3 > /sys/bus/greybus/devices/1-2.17/type - -* Read the results from sysfs: - cat /sys/bus/greybus/devices/1-2.17/requests_per_second_min - cat /sys/bus/greybus/devices/1-2.17/requests_per_second_max - cat /sys/bus/greybus/devices/1-2.17/requests_per_second_avg - - cat /sys/bus/greybus/devices/1-2.17/latency_min - cat /sys/bus/greybus/devices/1-2.17/latency_max - cat /sys/bus/greybus/devices/1-2.17/latency_avg - - cat /sys/bus/greybus/devices/1-2.17/apbridge_unipro_latency_min - cat /sys/bus/greybus/devices/1-2.17/apbridge_unipro_latency_max - cat /sys/bus/greybus/devices/1-2.17/apbridge_unipro_latency_avg - - cat /sys/bus/greybus/devices/1-2.17/gpbridge_firmware_latency_min - cat /sys/bus/greybus/devices/1-2.17/gpbridge_firmware_latency_max - cat /sys/bus/greybus/devices/1-2.17/gpbridge_firmware_latency_avg - - cat /sys/bus/greybus/devices/1-2.17/error - cat /sys/bus/greybus/devices/1-2.17/requests_completed - cat /sys/bus/greybus/devices/1-2.17/requests_timedout - - -3.2 - using the test application: - -* Run a transfer test 10 iterations of size 100 bytes on all available devices - #/loopback_test -t transfer -i 10 -s 100 - 1970-1-1 0:10:7,transfer,1-4.17,100,10,0,443,509,471.700012,66,1963,2256,2124.600098,293,102776,118088,109318.898438,15312,1620,1998,1894.099976,378,56,57,56.799999,1 - 1970-1-1 0:10:7,transfer,1-5.17,100,10,0,399,542,463.399994,143,1845,2505,2175.800049,660,92568,125744,107393.296875,33176,1469,2305,1806.500000,836,56,57,56.799999,1 - - -* Show the aggregate results of both devices. ("-a") - #/loopback_test -t transfer -i 10 -s 100 -a - 1970-1-1 0:10:35,transfer,1-4.17,100,10,0,448,580,494.100006,132,1722,2230,2039.400024,508,103936,134560,114515.703125,30624,1513,1980,1806.900024,467,56,57,57.299999,1 - 1970-1-1 0:10:35,transfer,1-5.17,100,10,0,383,558,478.600006,175,1791,2606,2115.199951,815,88856,129456,110919.703125,40600,1457,2246,1773.599976,789,56,57,57.099998,1 - 1970-1-1 0:10:35,transfer,aggregate,100,10,0,383,580,486.000000,197,1722,2606,2077.000000,884,88856,134560,112717.000000,45704,1457,2246,1789.000000,789,56,57,57.000000,1 - -* Example usage of the mask option to select which devices will - run the test (1st, 2nd, or both devices): - # /loopback_test -t transfer -i 10 -s 100 -m 1 - 1970-1-1 0:11:56,transfer,1-4.17,100,10,0,514,558,544.900024,44,1791,1943,1836.599976,152,119248,129456,126301.296875,10208,1600,1001609,101613.601562,1000009,56,57,56.900002,1 - # /loopback_test -t transfer -i 10 -s 100 -m 2 - 1970-1-1 0:12:0,transfer,1-5.17,100,10,0,468,554,539.000000,86,1804,2134,1859.500000,330,108576,128528,124932.500000,19952,1606,1626,1619.300049,20,56,57,57.400002,1 - # /loopback_test -t transfer -i 10 -s 100 -m 3 - 1970-1-1 0:12:3,transfer,1-4.17,100,10,0,432,510,469.399994,78,1959,2313,2135.800049,354,100224,118320,108785.296875,18096,1610,2024,1893.500000,414,56,57,57.200001,1 - 1970-1-1 0:12:3,transfer,1-5.17,100,10,0,404,542,468.799988,138,1843,2472,2152.500000,629,93728,125744,108646.101562,32016,1504,2247,1853.099976,743,56,57,57.099998,1 - -* Show output in human readable format ("-p") - # /loopback_test -t transfer -i 10 -s 100 -m 3 -p - - 1970-1-1 0:12:37 - test: transfer - path: 1-4.17 - size: 100 - iterations: 10 - errors: 0 - async: Disabled - requests per-sec: min=390, max=547, average=469.299988, jitter=157 - ap-throughput B/s: min=90480 max=126904 average=108762.101562 jitter=36424 - ap-latency usec: min=1826 max=2560 average=2146.000000 jitter=734 - apbridge-latency usec: min=1620 max=1982 average=1882.099976 jitter=362 - gpbridge-latency usec: min=56 max=57 average=57.099998 jitter=1 - - - 1970-1-1 0:12:37 - test: transfer - path: 1-5.17 - size: 100 - iterations: 10 - errors: 0 - async: Disabled - requests per-sec: min=397, max=538, average=461.700012, jitter=141 - ap-throughput B/s: min=92104 max=124816 average=106998.898438 jitter=32712 - ap-latency usec: min=1856 max=2514 average=2185.699951 jitter=658 - apbridge-latency usec: min=1460 max=2296 average=1828.599976 jitter=836 - gpbridge-latency usec: min=56 max=57 average=57.099998 jitter=1 diff --git a/drivers/staging/greybus/tools/lbtest b/drivers/staging/greybus/tools/lbtest deleted file mode 100755 index 47c481239e98..000000000000 --- a/drivers/staging/greybus/tools/lbtest +++ /dev/null @@ -1,169 +0,0 @@ -#!/usr/bin/env python -# SPDX-License-Identifier: BSD-3-Clause - -# Copyright (c) 2015 Google, Inc. -# Copyright (c) 2015 Linaro, Ltd. -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are met: -# 1. Redistributions of source code must retain the above copyright notice, -# this list of conditions and the following disclaimer. -# 2. Redistributions in binary form must reproduce the above copyright notice, -# this list of conditions and the following disclaimer in the documentation -# and/or other materials provided with the distribution. -# 3. Neither the name of the copyright holder nor the names of its -# contributors may be used to endorse or promote products derived from this -# software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, -# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR -# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR -# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; -# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, -# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR -# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF -# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -from __future__ import print_function -import csv -import datetime -import sys -import time - -dict = {'ping': '2', 'transfer': '3', 'sink': '4'} -verbose = 1 - -def abort(): - sys.exit(1) - -def usage(): - print('Usage: looptest TEST SIZE ITERATIONS PATH\n\n' - ' Run TEST for a number of ITERATIONS with operation data SIZE bytes\n' - ' TEST may be \'ping\' \'transfer\' or \'sink\'\n' - ' SIZE indicates the size of transfer <= greybus max payload bytes\n' - ' ITERATIONS indicates the number of times to execute TEST at SIZE bytes\n' - ' Note if ITERATIONS is set to zero then this utility will\n' - ' initiate an infinite (non terminating) test and exit\n' - ' without logging any metrics data\n' - ' PATH indicates the sysfs path for the loopback greybus entries e.g.\n' - ' /sys/bus/greybus/devices/endo0:1:1:1:1/\n' - 'Examples:\n' - ' looptest transfer 128 10000\n' - ' looptest ping 0 128\n' - ' looptest sink 2030 32768\n' - .format(sys.argv[0]), file=sys.stderr) - - abort() - -def read_sysfs_int(path): - try: - f = open(path, "r"); - val = f.read(); - f.close() - return int(val) - except IOError as e: - print("I/O error({0}): {1}".format(e.errno, e.strerror)) - print("Invalid path %s" % path) - -def write_sysfs_val(path, val): - try: - f = open(path, "r+") - f.write(val) - f.close() - except IOError as e: - print("I/O error({0}): {1}".format(e.errno, e.strerror)) - print("Invalid path %s" % path) - -def log_csv(test_name, size, iteration_max, sys_pfx): - # file name will test_name_size_iteration_max.csv - # every time the same test with the same parameters is run we will then - # append to the same CSV with datestamp - representing each test dataset - fname = test_name + '_' + size + '_' + str(iteration_max) + '.csv' - - try: - # gather data set - date = str(datetime.datetime.now()) - error = read_sysfs_int(sys_pfx + 'error') - request_min = read_sysfs_int(sys_pfx + 'requests_per_second_min') - request_max = read_sysfs_int(sys_pfx + 'requests_per_second_max') - request_avg = read_sysfs_int(sys_pfx + 'requests_per_second_avg') - latency_min = read_sysfs_int(sys_pfx + 'latency_min') - latency_max = read_sysfs_int(sys_pfx + 'latency_max') - latency_avg = read_sysfs_int(sys_pfx + 'latency_avg') - throughput_min = read_sysfs_int(sys_pfx + 'throughput_min') - throughput_max = read_sysfs_int(sys_pfx + 'throughput_max') - throughput_avg = read_sysfs_int(sys_pfx + 'throughput_avg') - - # derive jitter - request_jitter = request_max - request_min - latency_jitter = latency_max - latency_min - throughput_jitter = throughput_max - throughput_min - - # append data set to file - with open(fname, 'a') as csvf: - row = csv.writer(csvf, delimiter=",", quotechar="'", - quoting=csv.QUOTE_MINIMAL) - row.writerow([date, test_name, size, iteration_max, error, - request_min, request_max, request_avg, request_jitter, - latency_min, latency_max, latency_avg, latency_jitter, - throughput_min, throughput_max, throughput_avg, throughput_jitter]) - except IOError as e: - print("I/O error({0}): {1}".format(e.errno, e.strerror)) - -def loopback_run(test_name, size, iteration_max, sys_pfx): - test_id = dict[test_name] - try: - # Terminate any currently running test - write_sysfs_val(sys_pfx + 'type', '0') - # Set parameter for no wait between messages - write_sysfs_val(sys_pfx + 'ms_wait', '0') - # Set operation size - write_sysfs_val(sys_pfx + 'size', size) - # Set iterations - write_sysfs_val(sys_pfx + 'iteration_max', str(iteration_max)) - # Initiate by setting loopback operation type - write_sysfs_val(sys_pfx + 'type', test_id) - time.sleep(1) - - if iteration_max == 0: - print ("Infinite test initiated CSV won't be logged\n") - return - - previous = 0 - err = 0 - while True: - # get current count bail out if it hasn't changed - iteration_count = read_sysfs_int(sys_pfx + 'iteration_count') - if previous == iteration_count: - err = 1 - break - elif iteration_count == iteration_max: - break - previous = iteration_count - if verbose: - print('%02d%% complete %d of %d ' % - (100 * iteration_count / iteration_max, - iteration_count, iteration_max)) - time.sleep(1) - if err: - print ('\nError executing test\n') - else: - log_csv(test_name, size, iteration_max, sys_pfx) - except ValueError as ve: - print("Error: %s " % format(e.strerror), file=sys.stderr) - abort() - -def main(): - if len(sys.argv) < 5: - usage() - - if sys.argv[1] in dict.keys(): - loopback_run(sys.argv[1], sys.argv[2], int(sys.argv[3]), sys.argv[4]) - else: - usage() -if __name__ == '__main__': - main() diff --git a/drivers/staging/greybus/tools/loopback_test.c b/drivers/staging/greybus/tools/loopback_test.c deleted file mode 100644 index d7ad51ff60c5..000000000000 --- a/drivers/staging/greybus/tools/loopback_test.c +++ /dev/null @@ -1,979 +0,0 @@ -// SPDX-License-Identifier: BSD-3-Clause -/* - * Loopback test application - * - * Copyright 2015 Google Inc. - * Copyright 2015 Linaro Ltd. - */ -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <stdint.h> -#include <poll.h> -#include <sys/types.h> -#include <time.h> -#include <unistd.h> -#include <dirent.h> -#include <signal.h> - -#define MAX_NUM_DEVICES 10 -#define MAX_SYSFS_PREFIX 0x80 -#define MAX_SYSFS_PATH 0x200 -#define CSV_MAX_LINE 0x1000 -#define SYSFS_MAX_INT 0x20 -#define MAX_STR_LEN 255 -#define DEFAULT_ASYNC_TIMEOUT 200000 - -struct dict { - char *name; - int type; -}; - -static struct dict dict[] = { - {"ping", 2}, - {"transfer", 3}, - {"sink", 4}, - {NULL,} /* list termination */ -}; - -struct loopback_results { - float latency_avg; - uint32_t latency_max; - uint32_t latency_min; - uint32_t latency_jitter; - - float request_avg; - uint32_t request_max; - uint32_t request_min; - uint32_t request_jitter; - - float throughput_avg; - uint32_t throughput_max; - uint32_t throughput_min; - uint32_t throughput_jitter; - - float apbridge_unipro_latency_avg; - uint32_t apbridge_unipro_latency_max; - uint32_t apbridge_unipro_latency_min; - uint32_t apbridge_unipro_latency_jitter; - - float gbphy_firmware_latency_avg; - uint32_t gbphy_firmware_latency_max; - uint32_t gbphy_firmware_latency_min; - uint32_t gbphy_firmware_latency_jitter; - - uint32_t error; -}; - -struct loopback_device { - char name[MAX_STR_LEN]; - char sysfs_entry[MAX_SYSFS_PATH]; - char debugfs_entry[MAX_SYSFS_PATH]; - struct loopback_results results; -}; - -struct loopback_test { - int verbose; - int debug; - int raw_data_dump; - int porcelain; - int mask; - int size; - int iteration_max; - int aggregate_output; - int test_id; - int device_count; - int list_devices; - int use_async; - int async_timeout; - int async_outstanding_operations; - int us_wait; - int file_output; - int stop_all; - int poll_count; - char test_name[MAX_STR_LEN]; - char sysfs_prefix[MAX_SYSFS_PREFIX]; - char debugfs_prefix[MAX_SYSFS_PREFIX]; - struct timespec poll_timeout; - struct loopback_device devices[MAX_NUM_DEVICES]; - struct loopback_results aggregate_results; - struct pollfd fds[MAX_NUM_DEVICES]; -}; - -struct loopback_test t; - -/* Helper macros to calculate the aggregate results for all devices */ -static inline int device_enabled(struct loopback_test *t, int dev_idx); - -#define GET_MAX(field) \ -static int get_##field##_aggregate(struct loopback_test *t) \ -{ \ - uint32_t max = 0; \ - int i; \ - for (i = 0; i < t->device_count; i++) { \ - if (!device_enabled(t, i)) \ - continue; \ - if (t->devices[i].results.field > max) \ - max = t->devices[i].results.field; \ - } \ - return max; \ -} \ - -#define GET_MIN(field) \ -static int get_##field##_aggregate(struct loopback_test *t) \ -{ \ - uint32_t min = ~0; \ - int i; \ - for (i = 0; i < t->device_count; i++) { \ - if (!device_enabled(t, i)) \ - continue; \ - if (t->devices[i].results.field < min) \ - min = t->devices[i].results.field; \ - } \ - return min; \ -} \ - -#define GET_AVG(field) \ -static int get_##field##_aggregate(struct loopback_test *t) \ -{ \ - uint32_t val = 0; \ - uint32_t count = 0; \ - int i; \ - for (i = 0; i < t->device_count; i++) { \ - if (!device_enabled(t, i)) \ - continue; \ - count++; \ - val += t->devices[i].results.field; \ - } \ - if (count) \ - val /= count; \ - return val; \ -} \ - -GET_MAX(throughput_max); -GET_MAX(request_max); -GET_MAX(latency_max); -GET_MAX(apbridge_unipro_latency_max); -GET_MAX(gbphy_firmware_latency_max); -GET_MIN(throughput_min); -GET_MIN(request_min); -GET_MIN(latency_min); -GET_MIN(apbridge_unipro_latency_min); -GET_MIN(gbphy_firmware_latency_min); -GET_AVG(throughput_avg); -GET_AVG(request_avg); -GET_AVG(latency_avg); -GET_AVG(apbridge_unipro_latency_avg); -GET_AVG(gbphy_firmware_latency_avg); - -void abort(void) -{ - _exit(1); -} - -void usage(void) -{ - fprintf(stderr, "Usage: loopback_test TEST [SIZE] ITERATIONS [SYSPATH] [DBGPATH]\n\n" - " Run TEST for a number of ITERATIONS with operation data SIZE bytes\n" - " TEST may be \'ping\' \'transfer\' or \'sink\'\n" - " SIZE indicates the size of transfer <= greybus max payload bytes\n" - " ITERATIONS indicates the number of times to execute TEST at SIZE bytes\n" - " Note if ITERATIONS is set to zero then this utility will\n" - " initiate an infinite (non terminating) test and exit\n" - " without logging any metrics data\n" - " SYSPATH indicates the sysfs path for the loopback greybus entries e.g.\n" - " /sys/bus/greybus/devices\n" - " DBGPATH indicates the debugfs path for the loopback greybus entries e.g.\n" - " /sys/kernel/debug/gb_loopback/\n" - " Mandatory arguments\n" - " -t must be one of the test names - sink, transfer or ping\n" - " -i iteration count - the number of iterations to run the test over\n" - " Optional arguments\n" - " -S sysfs location - location for greybus 'endo' entries default /sys/bus/greybus/devices/\n" - " -D debugfs location - location for loopback debugfs entries default /sys/kernel/debug/gb_loopback/\n" - " -s size of data packet to send during test - defaults to zero\n" - " -m mask - a bit mask of connections to include example: -m 8 = 4th connection -m 9 = 1st and 4th connection etc\n" - " default is zero which means broadcast to all connections\n" - " -v verbose output\n" - " -d debug output\n" - " -r raw data output - when specified the full list of latency values are included in the output CSV\n" - " -p porcelain - when specified printout is in a user-friendly non-CSV format. This option suppresses writing to CSV file\n" - " -a aggregate - show aggregation of all enabled devices\n" - " -l list found loopback devices and exit\n" - " -x Async - Enable async transfers\n" - " -o Async Timeout - Timeout in uSec for async operations\n" - " -O Poll loop time out in seconds(max time a test is expected to last, default: 30sec)\n" - " -c Max number of outstanding operations for async operations\n" - " -w Wait in uSec between operations\n" - " -z Enable output to a CSV file (incompatible with -p)\n" - " -f When starting new loopback test, stop currently running tests on all devices\n" - "Examples:\n" - " Send 10000 transfers with a packet size of 128 bytes to all active connections\n" - " loopback_test -t transfer -s 128 -i 10000 -S /sys/bus/greybus/devices/ -D /sys/kernel/debug/gb_loopback/\n" - " loopback_test -t transfer -s 128 -i 10000 -m 0\n" - " Send 10000 transfers with a packet size of 128 bytes to connection 1 and 4\n" - " loopback_test -t transfer -s 128 -i 10000 -m 9\n" - " loopback_test -t ping -s 0 128 -i -S /sys/bus/greybus/devices/ -D /sys/kernel/debug/gb_loopback/\n" - " loopback_test -t sink -s 2030 -i 32768 -S /sys/bus/greybus/devices/ -D /sys/kernel/debug/gb_loopback/\n"); - abort(); -} - -static inline int device_enabled(struct loopback_test *t, int dev_idx) -{ - if (!t->mask || (t->mask & (1 << dev_idx))) - return 1; - - return 0; -} - -static void show_loopback_devices(struct loopback_test *t) -{ - int i; - - if (t->device_count == 0) { - printf("No loopback devices.\n"); - return; - } - - for (i = 0; i < t->device_count; i++) - printf("device[%d] = %s\n", i, t->devices[i].name); -} - -int open_sysfs(const char *sys_pfx, const char *node, int flags) -{ - int fd; - char path[MAX_SYSFS_PATH]; - - snprintf(path, sizeof(path), "%s%s", sys_pfx, node); - fd = open(path, flags); - if (fd < 0) { - fprintf(stderr, "unable to open %s\n", path); - abort(); - } - return fd; -} - -int read_sysfs_int_fd(int fd, const char *sys_pfx, const char *node) -{ - char buf[SYSFS_MAX_INT]; - - if (read(fd, buf, sizeof(buf)) < 0) { - fprintf(stderr, "unable to read from %s%s %s\n", sys_pfx, node, - strerror(errno)); - close(fd); - abort(); - } - return atoi(buf); -} - -float read_sysfs_float_fd(int fd, const char *sys_pfx, const char *node) -{ - char buf[SYSFS_MAX_INT]; - - if (read(fd, buf, sizeof(buf)) < 0) { - fprintf(stderr, "unable to read from %s%s %s\n", sys_pfx, node, - strerror(errno)); - close(fd); - abort(); - } - return atof(buf); -} - -int read_sysfs_int(const char *sys_pfx, const char *node) -{ - int fd, val; - - fd = open_sysfs(sys_pfx, node, O_RDONLY); - val = read_sysfs_int_fd(fd, sys_pfx, node); - close(fd); - return val; -} - -float read_sysfs_float(const char *sys_pfx, const char *node) -{ - int fd; - float val; - - fd = open_sysfs(sys_pfx, node, O_RDONLY); - val = read_sysfs_float_fd(fd, sys_pfx, node); - close(fd); - return val; -} - -void write_sysfs_val(const char *sys_pfx, const char *node, int val) -{ - int fd, len; - char buf[SYSFS_MAX_INT]; - - fd = open_sysfs(sys_pfx, node, O_RDWR); - len = snprintf(buf, sizeof(buf), "%d", val); - if (write(fd, buf, len) < 0) { - fprintf(stderr, "unable to write to %s%s %s\n", sys_pfx, node, - strerror(errno)); - close(fd); - abort(); - } - close(fd); -} - -static int get_results(struct loopback_test *t) -{ - struct loopback_device *d; - struct loopback_results *r; - int i; - - for (i = 0; i < t->device_count; i++) { - if (!device_enabled(t, i)) - continue; - - d = &t->devices[i]; - r = &d->results; - - r->error = read_sysfs_int(d->sysfs_entry, "error"); - r->request_min = read_sysfs_int(d->sysfs_entry, "requests_per_second_min"); - r->request_max = read_sysfs_int(d->sysfs_entry, "requests_per_second_max"); - r->request_avg = read_sysfs_float(d->sysfs_entry, "requests_per_second_avg"); - - r->latency_min = read_sysfs_int(d->sysfs_entry, "latency_min"); - r->latency_max = read_sysfs_int(d->sysfs_entry, "latency_max"); - r->latency_avg = read_sysfs_float(d->sysfs_entry, "latency_avg"); - - r->throughput_min = read_sysfs_int(d->sysfs_entry, "throughput_min"); - r->throughput_max = read_sysfs_int(d->sysfs_entry, "throughput_max"); - r->throughput_avg = read_sysfs_float(d->sysfs_entry, "throughput_avg"); - - r->apbridge_unipro_latency_min = - read_sysfs_int(d->sysfs_entry, "apbridge_unipro_latency_min"); - r->apbridge_unipro_latency_max = - read_sysfs_int(d->sysfs_entry, "apbridge_unipro_latency_max"); - r->apbridge_unipro_latency_avg = - read_sysfs_float(d->sysfs_entry, "apbridge_unipro_latency_avg"); - - r->gbphy_firmware_latency_min = - read_sysfs_int(d->sysfs_entry, "gbphy_firmware_latency_min"); - r->gbphy_firmware_latency_max = - read_sysfs_int(d->sysfs_entry, "gbphy_firmware_latency_max"); - r->gbphy_firmware_latency_avg = - read_sysfs_float(d->sysfs_entry, "gbphy_firmware_latency_avg"); - - r->request_jitter = r->request_max - r->request_min; - r->latency_jitter = r->latency_max - r->latency_min; - r->throughput_jitter = r->throughput_max - r->throughput_min; - r->apbridge_unipro_latency_jitter = - r->apbridge_unipro_latency_max - r->apbridge_unipro_latency_min; - r->gbphy_firmware_latency_jitter = - r->gbphy_firmware_latency_max - r->gbphy_firmware_latency_min; - } - - /*calculate the aggregate results of all enabled devices */ - if (t->aggregate_output) { - r = &t->aggregate_results; - - r->request_min = get_request_min_aggregate(t); - r->request_max = get_request_max_aggregate(t); - r->request_avg = get_request_avg_aggregate(t); - - r->latency_min = get_latency_min_aggregate(t); - r->latency_max = get_latency_max_aggregate(t); - r->latency_avg = get_latency_avg_aggregate(t); - - r->throughput_min = get_throughput_min_aggregate(t); - r->throughput_max = get_throughput_max_aggregate(t); - r->throughput_avg = get_throughput_avg_aggregate(t); - - r->apbridge_unipro_latency_min = - get_apbridge_unipro_latency_min_aggregate(t); - r->apbridge_unipro_latency_max = - get_apbridge_unipro_latency_max_aggregate(t); - r->apbridge_unipro_latency_avg = - get_apbridge_unipro_latency_avg_aggregate(t); - - r->gbphy_firmware_latency_min = - get_gbphy_firmware_latency_min_aggregate(t); - r->gbphy_firmware_latency_max = - get_gbphy_firmware_latency_max_aggregate(t); - r->gbphy_firmware_latency_avg = - get_gbphy_firmware_latency_avg_aggregate(t); - - r->request_jitter = r->request_max - r->request_min; - r->latency_jitter = r->latency_max - r->latency_min; - r->throughput_jitter = r->throughput_max - r->throughput_min; - r->apbridge_unipro_latency_jitter = - r->apbridge_unipro_latency_max - r->apbridge_unipro_latency_min; - r->gbphy_firmware_latency_jitter = - r->gbphy_firmware_latency_max - r->gbphy_firmware_latency_min; - } - - return 0; -} - -int format_output(struct loopback_test *t, - struct loopback_results *r, - const char *dev_name, - char *buf, int buf_len, - struct tm *tm) -{ - int len = 0; - - memset(buf, 0x00, buf_len); - len = snprintf(buf, buf_len, "%u-%u-%u %u:%u:%u", - tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, - tm->tm_hour, tm->tm_min, tm->tm_sec); - - if (t->porcelain) { - len += snprintf(&buf[len], buf_len - len, - "\n test:\t\t\t%s\n path:\t\t\t%s\n size:\t\t\t%u\n iterations:\t\t%u\n errors:\t\t%u\n async:\t\t\t%s\n", - t->test_name, - dev_name, - t->size, - t->iteration_max, - r->error, - t->use_async ? "Enabled" : "Disabled"); - - len += snprintf(&buf[len], buf_len - len, - " requests per-sec:\tmin=%u, max=%u, average=%f, jitter=%u\n", - r->request_min, - r->request_max, - r->request_avg, - r->request_jitter); - - len += snprintf(&buf[len], buf_len - len, - " ap-throughput B/s:\tmin=%u max=%u average=%f jitter=%u\n", - r->throughput_min, - r->throughput_max, - r->throughput_avg, - r->throughput_jitter); - len += snprintf(&buf[len], buf_len - len, - " ap-latency usec:\tmin=%u max=%u average=%f jitter=%u\n", - r->latency_min, - r->latency_max, - r->latency_avg, - r->latency_jitter); - len += snprintf(&buf[len], buf_len - len, - " apbridge-latency usec:\tmin=%u max=%u average=%f jitter=%u\n", - r->apbridge_unipro_latency_min, - r->apbridge_unipro_latency_max, - r->apbridge_unipro_latency_avg, - r->apbridge_unipro_latency_jitter); - - len += snprintf(&buf[len], buf_len - len, - " gbphy-latency usec:\tmin=%u max=%u average=%f jitter=%u\n", - r->gbphy_firmware_latency_min, - r->gbphy_firmware_latency_max, - r->gbphy_firmware_latency_avg, - r->gbphy_firmware_latency_jitter); - - } else { - len += snprintf(&buf[len], buf_len - len, ",%s,%s,%u,%u,%u", - t->test_name, dev_name, t->size, t->iteration_max, - r->error); - - len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", - r->request_min, - r->request_max, - r->request_avg, - r->request_jitter); - - len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", - r->latency_min, - r->latency_max, - r->latency_avg, - r->latency_jitter); - - len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", - r->throughput_min, - r->throughput_max, - r->throughput_avg, - r->throughput_jitter); - - len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", - r->apbridge_unipro_latency_min, - r->apbridge_unipro_latency_max, - r->apbridge_unipro_latency_avg, - r->apbridge_unipro_latency_jitter); - - len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", - r->gbphy_firmware_latency_min, - r->gbphy_firmware_latency_max, - r->gbphy_firmware_latency_avg, - r->gbphy_firmware_latency_jitter); - } - - printf("\n%s\n", buf); - - return len; -} - -static int log_results(struct loopback_test *t) -{ - int fd, i, len, ret; - struct tm tm; - time_t local_time; - char file_name[MAX_SYSFS_PATH]; - char data[CSV_MAX_LINE]; - - local_time = time(NULL); - tm = *localtime(&local_time); - - /* - * file name will test_name_size_iteration_max.csv - * every time the same test with the same parameters is run we will then - * append to the same CSV with datestamp - representing each test - * dataset. - */ - if (t->file_output && !t->porcelain) { - snprintf(file_name, sizeof(file_name), "%s_%d_%d.csv", - t->test_name, t->size, t->iteration_max); - - fd = open(file_name, O_WRONLY | O_CREAT | O_APPEND, 0644); - if (fd < 0) { - fprintf(stderr, "unable to open %s for appending\n", file_name); - abort(); - } - } - for (i = 0; i < t->device_count; i++) { - if (!device_enabled(t, i)) - continue; - - len = format_output(t, &t->devices[i].results, - t->devices[i].name, - data, sizeof(data), &tm); - if (t->file_output && !t->porcelain) { - ret = write(fd, data, len); - if (ret == -1) - fprintf(stderr, "unable to write %d bytes to csv.\n", len); - } - } - - if (t->aggregate_output) { - len = format_output(t, &t->aggregate_results, "aggregate", - data, sizeof(data), &tm); - if (t->file_output && !t->porcelain) { - ret = write(fd, data, len); - if (ret == -1) - fprintf(stderr, "unable to write %d bytes to csv.\n", len); - } - } - - if (t->file_output && !t->porcelain) - close(fd); - - return 0; -} - -int is_loopback_device(const char *path, const char *node) -{ - char file[MAX_SYSFS_PATH]; - - snprintf(file, MAX_SYSFS_PATH, "%s%s/iteration_count", path, node); - if (access(file, F_OK) == 0) - return 1; - return 0; -} - -int find_loopback_devices(struct loopback_test *t) -{ - struct dirent **namelist; - int i, n, ret; - unsigned int dev_id; - struct loopback_device *d; - - n = scandir(t->sysfs_prefix, &namelist, NULL, alphasort); - if (n < 0) { - perror("scandir"); - ret = -ENODEV; - goto baddir; - } - - /* Don't include '.' and '..' */ - if (n <= 2) { - ret = -ENOMEM; - goto done; - } - - for (i = 0; i < n; i++) { - ret = sscanf(namelist[i]->d_name, "gb_loopback%u", &dev_id); - if (ret != 1) - continue; - - if (!is_loopback_device(t->sysfs_prefix, namelist[i]->d_name)) - continue; - - if (t->device_count == MAX_NUM_DEVICES) { - fprintf(stderr, "max number of devices reached!\n"); - break; - } - - d = &t->devices[t->device_count++]; - snprintf(d->name, MAX_STR_LEN, "gb_loopback%u", dev_id); - - snprintf(d->sysfs_entry, MAX_SYSFS_PATH, "%s%s/", - t->sysfs_prefix, d->name); - - snprintf(d->debugfs_entry, MAX_SYSFS_PATH, "%sraw_latency_%s", - t->debugfs_prefix, d->name); - - if (t->debug) - printf("add %s %s\n", d->sysfs_entry, d->debugfs_entry); - } - - ret = 0; -done: - for (i = 0; i < n; i++) - free(namelist[i]); - free(namelist); -baddir: - return ret; -} - -static int open_poll_files(struct loopback_test *t) -{ - struct loopback_device *dev; - char buf[MAX_SYSFS_PATH + MAX_STR_LEN]; - char dummy; - int fds_idx = 0; - int i; - - for (i = 0; i < t->device_count; i++) { - dev = &t->devices[i]; - - if (!device_enabled(t, i)) - continue; - - snprintf(buf, sizeof(buf), "%s%s", dev->sysfs_entry, "iteration_count"); - t->fds[fds_idx].fd = open(buf, O_RDONLY); - if (t->fds[fds_idx].fd < 0) { - fprintf(stderr, "Error opening poll file!\n"); - goto err; - } - read(t->fds[fds_idx].fd, &dummy, 1); - t->fds[fds_idx].events = POLLERR | POLLPRI; - t->fds[fds_idx].revents = 0; - fds_idx++; - } - - t->poll_count = fds_idx; - - return 0; - -err: - for (i = 0; i < fds_idx; i++) - close(t->fds[i].fd); - - return -1; -} - -static int close_poll_files(struct loopback_test *t) -{ - int i; - - for (i = 0; i < t->poll_count; i++) - close(t->fds[i].fd); - - return 0; -} -static int is_complete(struct loopback_test *t) -{ - int iteration_count; - int i; - - for (i = 0; i < t->device_count; i++) { - if (!device_enabled(t, i)) - continue; - - iteration_count = read_sysfs_int(t->devices[i].sysfs_entry, - "iteration_count"); - - /* at least one device did not finish yet */ - if (iteration_count != t->iteration_max) - return 0; - } - - return 1; -} - -static void stop_tests(struct loopback_test *t) -{ - int i; - - for (i = 0; i < t->device_count; i++) { - if (!device_enabled(t, i)) - continue; - write_sysfs_val(t->devices[i].sysfs_entry, "type", 0); - } -} - -static void handler(int sig) { /* do nothing */ } - -static int wait_for_complete(struct loopback_test *t) -{ - int number_of_events = 0; - char dummy; - int ret; - int i; - struct timespec *ts = NULL; - struct sigaction sa; - sigset_t mask_old, mask; - - sigemptyset(&mask); - sigemptyset(&mask_old); - sigaddset(&mask, SIGINT); - sigprocmask(SIG_BLOCK, &mask, &mask_old); - - sa.sa_handler = handler; - sa.sa_flags = 0; - sigemptyset(&sa.sa_mask); - if (sigaction(SIGINT, &sa, NULL) == -1) { - fprintf(stderr, "sigaction error\n"); - return -1; - } - - if (t->poll_timeout.tv_sec != 0) - ts = &t->poll_timeout; - - while (1) { - ret = ppoll(t->fds, t->poll_count, ts, &mask_old); - if (ret <= 0) { - stop_tests(t); - fprintf(stderr, "Poll exit with errno %d\n", errno); - return -1; - } - - for (i = 0; i < t->poll_count; i++) { - if (t->fds[i].revents & POLLPRI) { - /* Dummy read to clear the event */ - read(t->fds[i].fd, &dummy, 1); - number_of_events++; - } - } - - if (number_of_events == t->poll_count) - break; - } - - if (!is_complete(t)) { - fprintf(stderr, "Iteration count did not finish!\n"); - return -1; - } - - return 0; -} - -static void prepare_devices(struct loopback_test *t) -{ - int i; - - /* - * Cancel any running tests on enabled devices. If - * stop_all option is given, stop test on all devices. - */ - for (i = 0; i < t->device_count; i++) - if (t->stop_all || device_enabled(t, i)) - write_sysfs_val(t->devices[i].sysfs_entry, "type", 0); - - for (i = 0; i < t->device_count; i++) { - if (!device_enabled(t, i)) - continue; - - write_sysfs_val(t->devices[i].sysfs_entry, "us_wait", - t->us_wait); - - /* Set operation size */ - write_sysfs_val(t->devices[i].sysfs_entry, "size", t->size); - - /* Set iterations */ - write_sysfs_val(t->devices[i].sysfs_entry, "iteration_max", - t->iteration_max); - - if (t->use_async) { - write_sysfs_val(t->devices[i].sysfs_entry, "async", 1); - write_sysfs_val(t->devices[i].sysfs_entry, - "timeout", t->async_timeout); - write_sysfs_val(t->devices[i].sysfs_entry, - "outstanding_operations_max", - t->async_outstanding_operations); - } else { - write_sysfs_val(t->devices[i].sysfs_entry, "async", 0); - } - } -} - -static int start(struct loopback_test *t) -{ - int i; - - /* the test starts by writing test_id to the type file. */ - for (i = 0; i < t->device_count; i++) { - if (!device_enabled(t, i)) - continue; - - write_sysfs_val(t->devices[i].sysfs_entry, "type", t->test_id); - } - - return 0; -} - -void loopback_run(struct loopback_test *t) -{ - int i; - int ret; - - for (i = 0; dict[i].name != NULL; i++) { - if (strstr(dict[i].name, t->test_name)) - t->test_id = dict[i].type; - } - if (!t->test_id) { - fprintf(stderr, "invalid test %s\n", t->test_name); - usage(); - return; - } - - prepare_devices(t); - - ret = open_poll_files(t); - if (ret) - goto err; - - start(t); - - ret = wait_for_complete(t); - close_poll_files(t); - if (ret) - goto err; - - get_results(t); - - log_results(t); - - return; - -err: - printf("Error running test\n"); -} - -static int sanity_check(struct loopback_test *t) -{ - int i; - - if (t->device_count == 0) { - fprintf(stderr, "No loopback devices found\n"); - return -1; - } - - for (i = 0; i < MAX_NUM_DEVICES; i++) { - if (!device_enabled(t, i)) - continue; - - if (t->mask && !strcmp(t->devices[i].name, "")) { - fprintf(stderr, "Bad device mask %x\n", (1 << i)); - return -1; - } - } - - return 0; -} - -int main(int argc, char *argv[]) -{ - int o, ret; - char *sysfs_prefix = "/sys/class/gb_loopback/"; - char *debugfs_prefix = "/sys/kernel/debug/gb_loopback/"; - - memset(&t, 0, sizeof(t)); - - while ((o = getopt(argc, argv, - "t:s:i:S:D:m:v::d::r::p::a::l::x::o:O:c:w:z::f::")) != -1) { - switch (o) { - case 't': - snprintf(t.test_name, MAX_STR_LEN, "%s", optarg); - break; - case 's': - t.size = atoi(optarg); - break; - case 'i': - t.iteration_max = atoi(optarg); - break; - case 'S': - snprintf(t.sysfs_prefix, MAX_SYSFS_PREFIX, "%s", optarg); - break; - case 'D': - snprintf(t.debugfs_prefix, MAX_SYSFS_PREFIX, "%s", optarg); - break; - case 'm': - t.mask = atol(optarg); - break; - case 'v': - t.verbose = 1; - break; - case 'd': - t.debug = 1; - break; - case 'r': - t.raw_data_dump = 1; - break; - case 'p': - t.porcelain = 1; - break; - case 'a': - t.aggregate_output = 1; - break; - case 'l': - t.list_devices = 1; - break; - case 'x': - t.use_async = 1; - break; - case 'o': - t.async_timeout = atoi(optarg); - break; - case 'O': - t.poll_timeout.tv_sec = atoi(optarg); - break; - case 'c': - t.async_outstanding_operations = atoi(optarg); - break; - case 'w': - t.us_wait = atoi(optarg); - break; - case 'z': - t.file_output = 1; - break; - case 'f': - t.stop_all = 1; - break; - default: - usage(); - return -EINVAL; - } - } - - if (!strcmp(t.sysfs_prefix, "")) - snprintf(t.sysfs_prefix, MAX_SYSFS_PREFIX, "%s", sysfs_prefix); - - if (!strcmp(t.debugfs_prefix, "")) - snprintf(t.debugfs_prefix, MAX_SYSFS_PREFIX, "%s", debugfs_prefix); - - ret = find_loopback_devices(&t); - if (ret) - return ret; - ret = sanity_check(&t); - if (ret) - return ret; - - if (t.list_devices) { - show_loopback_devices(&t); - return 0; - } - - if (t.test_name[0] == '\0' || t.iteration_max == 0) - usage(); - - if (t.async_timeout == 0) - t.async_timeout = DEFAULT_ASYNC_TIMEOUT; - - loopback_run(&t); - - return 0; -} |