^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * perf.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Performance analysis utility.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * This is the main hub from which the sub-commands (perf stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * perf top, perf record, perf report, etc.) are started.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "builtin.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "perf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "util/build-id.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "util/cache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "util/env.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <internal/lib.h> // page_size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <subcmd/exec-cmd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "util/config.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <subcmd/run-command.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "util/parse-events.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <subcmd/parse-options.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "util/bpf-loader.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "util/debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "util/event.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "util/util.h" // usage()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "ui/ui.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "perf-sys.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <api/fs/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <api/fs/tracing_path.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <perf/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <pthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/zalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) const char perf_usage_string[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) "perf [--version] [--help] [OPTIONS] COMMAND [ARGS]";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) const char perf_more_info_string[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) "See 'perf help COMMAND' for more information on a specific command.";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static int use_pager = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) const char *input_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct cmd_struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) const char *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int (*fn)(int, const char **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static struct cmd_struct commands[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) { "buildid-cache", cmd_buildid_cache, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) { "buildid-list", cmd_buildid_list, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) { "config", cmd_config, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) { "c2c", cmd_c2c, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) { "diff", cmd_diff, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) { "evlist", cmd_evlist, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) { "help", cmd_help, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) { "kallsyms", cmd_kallsyms, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) { "list", cmd_list, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) { "record", cmd_record, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) { "report", cmd_report, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) { "bench", cmd_bench, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) { "stat", cmd_stat, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) { "timechart", cmd_timechart, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) { "top", cmd_top, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) { "annotate", cmd_annotate, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) { "version", cmd_version, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) { "script", cmd_script, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) { "sched", cmd_sched, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #ifdef HAVE_LIBELF_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) { "probe", cmd_probe, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) { "kmem", cmd_kmem, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) { "lock", cmd_lock, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) { "kvm", cmd_kvm, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) { "test", cmd_test, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #if defined(HAVE_LIBAUDIT_SUPPORT) || defined(HAVE_SYSCALL_TABLE_SUPPORT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) { "trace", cmd_trace, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) { "inject", cmd_inject, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) { "mem", cmd_mem, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) { "data", cmd_data, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) { "ftrace", cmd_ftrace, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct pager_config {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) const char *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static int pager_command_config(const char *var, const char *value, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct pager_config *c = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (strstarts(var, "pager.") && !strcmp(var + 6, c->cmd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) c->val = perf_config_bool(var, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static int check_pager_config(const char *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct pager_config c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) c.cmd = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) c.val = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) err = perf_config(pager_command_config, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return err ?: c.val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static int browser_command_config(const char *var, const char *value, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct pager_config *c = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (strstarts(var, "tui.") && !strcmp(var + 4, c->cmd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) c->val = perf_config_bool(var, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (strstarts(var, "gtk.") && !strcmp(var + 4, c->cmd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) c->val = perf_config_bool(var, value) ? 2 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * returns 0 for "no tui", 1 for "use tui", 2 for "use gtk",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * and -1 for "not specified"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static int check_browser_config(const char *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct pager_config c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) c.cmd = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) c.val = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) err = perf_config(browser_command_config, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return err ?: c.val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static void commit_pager_choice(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) switch (use_pager) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) setenv(PERF_PAGER_ENVIRONMENT, "cat", 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /* setup_pager(); */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct option options[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) OPT_ARGUMENT("help", "help"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) OPT_ARGUMENT("version", "version"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) OPT_ARGUMENT("exec-path", "exec-path"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) OPT_ARGUMENT("html-path", "html-path"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) OPT_ARGUMENT("paginate", "paginate"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) OPT_ARGUMENT("no-pager", "no-pager"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) OPT_ARGUMENT("debugfs-dir", "debugfs-dir"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) OPT_ARGUMENT("buildid-dir", "buildid-dir"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) OPT_ARGUMENT("list-cmds", "list-cmds"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) OPT_ARGUMENT("list-opts", "list-opts"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) OPT_ARGUMENT("debug", "debug"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) OPT_END()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static int handle_options(const char ***argv, int *argc, int *envchanged)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) int handled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) while (*argc > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) const char *cmd = (*argv)[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (cmd[0] != '-')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * For legacy reasons, the "version" and "help"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * commands can be written with "--" prepended
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * to make them look like flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * Shortcut for '-h' and '-v' options to invoke help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * and version command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (!strcmp(cmd, "-h")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) (*argv)[0] = "--help";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (!strcmp(cmd, "-v")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) (*argv)[0] = "--version";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (!strcmp(cmd, "-vv")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) (*argv)[0] = "version";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) version_verbose = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * Check remaining flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (strstarts(cmd, CMD_EXEC_PATH)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) cmd += strlen(CMD_EXEC_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (*cmd == '=')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) set_argv_exec_path(cmd + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) puts(get_argv_exec_path());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) } else if (!strcmp(cmd, "--html-path")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) puts(system_path(PERF_HTML_PATH));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) use_pager = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) } else if (!strcmp(cmd, "--no-pager")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) use_pager = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (envchanged)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) *envchanged = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) } else if (!strcmp(cmd, "--debugfs-dir")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (*argc < 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) fprintf(stderr, "No directory given for --debugfs-dir.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) usage(perf_usage_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) tracing_path_set((*argv)[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (envchanged)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) *envchanged = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) (*argv)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) (*argc)--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) } else if (!strcmp(cmd, "--buildid-dir")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (*argc < 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) fprintf(stderr, "No directory given for --buildid-dir.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) usage(perf_usage_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) set_buildid_dir((*argv)[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (envchanged)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) *envchanged = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) (*argv)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) (*argc)--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) } else if (strstarts(cmd, CMD_DEBUGFS_DIR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) tracing_path_set(cmd + strlen(CMD_DEBUGFS_DIR));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) fprintf(stderr, "dir: %s\n", tracing_path_mount());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (envchanged)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) *envchanged = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) } else if (!strcmp(cmd, "--list-cmds")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) for (i = 0; i < ARRAY_SIZE(commands); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct cmd_struct *p = commands+i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) printf("%s ", p->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) putchar('\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) } else if (!strcmp(cmd, "--list-opts")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) for (i = 0; i < ARRAY_SIZE(options)-1; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct option *p = options+i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) printf("--%s ", p->long_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) putchar('\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) } else if (!strcmp(cmd, "--debug")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (*argc < 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) fprintf(stderr, "No variable specified for --debug.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) usage(perf_usage_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (perf_debug_option((*argv)[1]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) usage(perf_usage_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) (*argv)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) (*argc)--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) fprintf(stderr, "Unknown option: %s\n", cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) usage(perf_usage_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) (*argv)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) (*argc)--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) handled++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return handled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) #define RUN_SETUP (1<<0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) #define USE_PAGER (1<<1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) struct stat st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) char sbuf[STRERR_BUFSIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (use_browser == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) use_browser = check_browser_config(p->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (use_pager == -1 && p->option & RUN_SETUP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) use_pager = check_pager_config(p->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (use_pager == -1 && p->option & USE_PAGER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) use_pager = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) commit_pager_choice();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) perf_env__init(&perf_env);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) perf_env__set_cmdline(&perf_env, argc, argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) status = p->fn(argc, argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) perf_config__exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) exit_browser(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) perf_env__exit(&perf_env);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) bpf__clear();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return status & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) /* Somebody closed stdout? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (fstat(fileno(stdout), &st))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) /* Ignore write errors for pipes and sockets.. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) status = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /* Check for ENOSPC and EIO errors.. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (fflush(stdout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) fprintf(stderr, "write failure on standard output: %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) str_error_r(errno, sbuf, sizeof(sbuf)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (ferror(stdout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) fprintf(stderr, "unknown write failure on standard output");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) if (fclose(stdout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) fprintf(stderr, "close failed on standard output: %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) str_error_r(errno, sbuf, sizeof(sbuf)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) static void handle_internal_command(int argc, const char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) const char *cmd = argv[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /* Turn "perf cmd --help" into "perf help cmd" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (argc > 1 && !strcmp(argv[1], "--help")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) argv[1] = argv[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) argv[0] = cmd = "help";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) for (i = 0; i < ARRAY_SIZE(commands); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) struct cmd_struct *p = commands+i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (strcmp(p->cmd, cmd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) exit(run_builtin(p, argc, argv));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) static void execv_dashed_external(const char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) char *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) const char *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (asprintf(&cmd, "perf-%s", argv[0]) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) goto do_die;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * argv[0] must be the perf command, but the argv array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * belongs to the caller, and may be reused in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * subsequent loop iterations. Save argv[0] and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) * restore it on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) tmp = argv[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) argv[0] = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * if we fail because the command is not found, it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * OK to return. Otherwise, we just pass along the status code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) status = run_command_v_opt(argv, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if (status != -ERR_RUN_COMMAND_EXEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (IS_RUN_COMMAND_ERR(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) do_die:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) pr_err("FATAL: unable to run '%s'", argv[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) status = -128;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) exit(-status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) errno = ENOENT; /* as if we called execvp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) argv[0] = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) zfree(&cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) static int run_argv(int *argcp, const char ***argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) /* See if it's an internal command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) handle_internal_command(*argcp, *argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) /* .. then try the external ones */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) execv_dashed_external(*argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) static void pthread__block_sigwinch(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) sigset_t set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) sigemptyset(&set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) sigaddset(&set, SIGWINCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) pthread_sigmask(SIG_BLOCK, &set, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) void pthread__unblock_sigwinch(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) sigset_t set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) sigemptyset(&set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) sigaddset(&set, SIGWINCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) pthread_sigmask(SIG_UNBLOCK, &set, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static int libperf_print(enum libperf_print_level level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) const char *fmt, va_list ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return eprintf(level, verbose, fmt, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) int main(int argc, const char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) const char *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) char sbuf[STRERR_BUFSIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /* libsubcmd init */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) exec_cmd_init("perf", PREFIX, PERF_EXEC_PATH, EXEC_PATH_ENVIRONMENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) pager_init(PERF_PAGER_ENVIRONMENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) libperf_init(libperf_print);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) cmd = extract_argv0_path(argv[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (!cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) cmd = "perf-help";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) srandom(time(NULL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) /* Setting $PERF_CONFIG makes perf read _only_ the given config file. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) config_exclusive_filename = getenv("PERF_CONFIG");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) err = perf_config(perf_default_config, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) set_buildid_dir(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * "perf-xxxx" is the same as "perf xxxx", but we obviously:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) * - cannot take flags in between the "perf" and the "xxxx".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) * - cannot execute it externally (since it would just do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) * the same thing over again)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * So we just directly call the internal command handler. If that one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * fails to handle this, then maybe we just run a renamed perf binary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * that contains a dash in its name. To handle this scenario, we just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * fall through and ignore the "xxxx" part of the command string.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (strstarts(cmd, "perf-")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) cmd += 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) argv[0] = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) handle_internal_command(argc, argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * If the command is handled, the above function does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * return undo changes and fall through in such a case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) cmd -= 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) argv[0] = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (strstarts(cmd, "trace")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) #if defined(HAVE_LIBAUDIT_SUPPORT) || defined(HAVE_SYSCALL_TABLE_SUPPORT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) setup_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) argv[0] = "trace";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) return cmd_trace(argc, argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) fprintf(stderr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) "trace command not available: missing audit-libs devel package at build time.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /* Look for flags.. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) argv++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) argc--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) handle_options(&argv, &argc, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) commit_pager_choice();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (argc > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (strstarts(argv[0], "--"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) argv[0] += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) /* The user didn't specify a command; give them help */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) printf("\n usage: %s\n\n", perf_usage_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) list_common_cmds_help();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) printf("\n %s\n\n", perf_more_info_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) cmd = argv[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) test_attr__init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * We use PATH to find perf commands, but we prepend some higher
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) * precedence paths: the "--exec-path" option, the PERF_EXEC_PATH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * environment, and the $(perfexecdir) from the Makefile at build
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) setup_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * Block SIGWINCH notifications so that the thread that wants it can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * unblock and get syscalls like select interrupted instead of waiting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * forever while the signal goes to some other non interested thread.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) pthread__block_sigwinch();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) perf_debug_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) static int done_help;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) run_argv(&argc, &argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (errno != ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if (!done_help) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) cmd = argv[0] = help_unknown_cmd(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) done_help = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) fprintf(stderr, "Failed to run command '%s': %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) cmd, str_error_r(errno, sbuf, sizeof(sbuf)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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