90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2021 Red Hat Inc, Daniel Bristot de Oliveira <bristot@kernel.org>
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*/
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#include <getopt.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "osnoise.h"
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#include "timerlat.h"
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/*
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* rtla_usage - print rtla usage
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*/
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static void rtla_usage(int err)
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{
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int i;
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static const char *msg[] = {
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"",
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"rtla version " VERSION,
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"",
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" usage: rtla COMMAND ...",
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"",
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" commands:",
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" osnoise - gives information about the operating system noise (osnoise)",
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" hwnoise - gives information about hardware-related noise",
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" timerlat - measures the timer irq and thread latency",
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"",
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NULL,
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};
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for (i = 0; msg[i]; i++)
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fprintf(stderr, "%s\n", msg[i]);
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exit(err);
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}
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/*
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* run_command - try to run a rtla tool command
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*
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* It returns 0 if it fails. The tool's main will generally not
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* return as they should call exit().
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*/
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int run_command(int argc, char **argv, int start_position)
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{
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if (strcmp(argv[start_position], "osnoise") == 0) {
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osnoise_main(argc-start_position, &argv[start_position]);
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goto ran;
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} else if (strcmp(argv[start_position], "hwnoise") == 0) {
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hwnoise_main(argc-start_position, &argv[start_position]);
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goto ran;
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} else if (strcmp(argv[start_position], "timerlat") == 0) {
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timerlat_main(argc-start_position, &argv[start_position]);
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goto ran;
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}
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return 0;
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ran:
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return 1;
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}
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int main(int argc, char *argv[])
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{
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int retval;
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/* is it an alias? */
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retval = run_command(argc, argv, 0);
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if (retval)
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exit(0);
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if (argc < 2)
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goto usage;
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if (strcmp(argv[1], "-h") == 0) {
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rtla_usage(0);
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} else if (strcmp(argv[1], "--help") == 0) {
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rtla_usage(0);
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}
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retval = run_command(argc, argv, 1);
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if (retval)
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exit(0);
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usage:
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rtla_usage(1);
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exit(1);
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}
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