// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2021 Red Hat Inc, Daniel Bristot de Oliveira <bristot@kernel.org> */ #include <sys/types.h> #include <sys/stat.h> #include <pthread.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <fcntl.h> #include <stdio.h> #include "timerlat.h" static void timerlat_usage(void) { int i; static const char * const msg[] = { "", "timerlat version " VERSION, "", " usage: [rtla] timerlat [MODE] ...", "", " modes:", " top - prints the summary from timerlat tracer", " hist - prints a histogram of timer latencies", "", "if no MODE is given, the top mode is called, passing the arguments", NULL, }; for (i = 0; msg[i]; i++) fprintf(stderr, "%s\n", msg[i]); exit(1); } int timerlat_main(int argc, char *argv[]) { if (argc == 0) goto usage; /* * if timerlat was called without any argument, run the * default cmdline. */ if (argc == 1) { timerlat_top_main(argc, argv); exit(0); } if ((strcmp(argv[1], "-h") == 0) || (strcmp(argv[1], "--help") == 0)) { timerlat_usage(); exit(0); } else if (strncmp(argv[1], "-", 1) == 0) { /* the user skipped the tool, call the default one */ timerlat_top_main(argc, argv); exit(0); } else if (strcmp(argv[1], "top") == 0) { timerlat_top_main(argc-1, &argv[1]); exit(0); } else if (strcmp(argv[1], "hist") == 0) { timerlat_hist_main(argc-1, &argv[1]); exit(0); } usage: timerlat_usage(); exit(1); }