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-rw-r--r--src/tools/perf/perf.c543
1 files changed, 0 insertions, 543 deletions
diff --git a/src/tools/perf/perf.c b/src/tools/perf/perf.c
deleted file mode 100644
index 85e1aed..0000000
--- a/src/tools/perf/perf.c
+++ /dev/null
@@ -1,543 +0,0 @@
-/*
- * perf.c
- *
- * Performance analysis utility.
- *
- * This is the main hub from which the sub-commands (perf stat,
- * perf top, perf record, perf report, etc.) are started.
- */
-#include "builtin.h"
-
-#include "util/exec_cmd.h"
-#include "util/cache.h"
-#include "util/quote.h"
-#include "util/run-command.h"
-#include "util/parse-events.h"
-#include <lk/debugfs.h>
-#include <pthread.h>
-
-const char perf_usage_string[] =
- "perf [--version] [--help] COMMAND [ARGS]";
-
-const char perf_more_info_string[] =
- "See 'perf help COMMAND' for more information on a specific command.";
-
-int use_browser = -1;
-static int use_pager = -1;
-const char *input_name;
-
-struct cmd_struct {
- const char *cmd;
- int (*fn)(int, const char **, const char *);
- int option;
-};
-
-static struct cmd_struct commands[] = {
- { "buildid-cache", cmd_buildid_cache, 0 },
- { "buildid-list", cmd_buildid_list, 0 },
- { "diff", cmd_diff, 0 },
- { "evlist", cmd_evlist, 0 },
- { "help", cmd_help, 0 },
- { "list", cmd_list, 0 },
- { "record", cmd_record, 0 },
- { "report", cmd_report, 0 },
- { "bench", cmd_bench, 0 },
- { "stat", cmd_stat, 0 },
- { "timechart", cmd_timechart, 0 },
- { "top", cmd_top, 0 },
- { "annotate", cmd_annotate, 0 },
- { "version", cmd_version, 0 },
- { "script", cmd_script, 0 },
- { "sched", cmd_sched, 0 },
-#ifdef LIBELF_SUPPORT
- { "probe", cmd_probe, 0 },
-#endif
- { "kmem", cmd_kmem, 0 },
- { "lock", cmd_lock, 0 },
- { "kvm", cmd_kvm, 0 },
- { "test", cmd_test, 0 },
-#ifdef LIBAUDIT_SUPPORT
- { "trace", cmd_trace, 0 },
-#endif
- { "inject", cmd_inject, 0 },
- { "mem", cmd_mem, 0 },
-};
-
-struct pager_config {
- const char *cmd;
- int val;
-};
-
-static int pager_command_config(const char *var, const char *value, void *data)
-{
- struct pager_config *c = data;
- if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd))
- c->val = perf_config_bool(var, value);
- return 0;
-}
-
-/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
-int check_pager_config(const char *cmd)
-{
- struct pager_config c;
- c.cmd = cmd;
- c.val = -1;
- perf_config(pager_command_config, &c);
- return c.val;
-}
-
-static int browser_command_config(const char *var, const char *value, void *data)
-{
- struct pager_config *c = data;
- if (!prefixcmp(var, "tui.") && !strcmp(var + 4, c->cmd))
- c->val = perf_config_bool(var, value);
- if (!prefixcmp(var, "gtk.") && !strcmp(var + 4, c->cmd))
- c->val = perf_config_bool(var, value) ? 2 : 0;
- return 0;
-}
-
-/*
- * returns 0 for "no tui", 1 for "use tui", 2 for "use gtk",
- * and -1 for "not specified"
- */
-static int check_browser_config(const char *cmd)
-{
- struct pager_config c;
- c.cmd = cmd;
- c.val = -1;
- perf_config(browser_command_config, &c);
- return c.val;
-}
-
-static void commit_pager_choice(void)
-{
- switch (use_pager) {
- case 0:
- setenv("PERF_PAGER", "cat", 1);
- break;
- case 1:
- /* setup_pager(); */
- break;
- default:
- break;
- }
-}
-
-static int handle_options(const char ***argv, int *argc, int *envchanged)
-{
- int handled = 0;
-
- while (*argc > 0) {
- const char *cmd = (*argv)[0];
- if (cmd[0] != '-')
- break;
-
- /*
- * For legacy reasons, the "version" and "help"
- * commands can be written with "--" prepended
- * to make them look like flags.
- */
- if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version"))
- break;
-
- /*
- * Check remaining flags.
- */
- if (!prefixcmp(cmd, CMD_EXEC_PATH)) {
- cmd += strlen(CMD_EXEC_PATH);
- if (*cmd == '=')
- perf_set_argv_exec_path(cmd + 1);
- else {
- puts(perf_exec_path());
- exit(0);
- }
- } else if (!strcmp(cmd, "--html-path")) {
- puts(system_path(PERF_HTML_PATH));
- exit(0);
- } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
- use_pager = 1;
- } else if (!strcmp(cmd, "--no-pager")) {
- use_pager = 0;
- if (envchanged)
- *envchanged = 1;
- } else if (!strcmp(cmd, "--perf-dir")) {
- if (*argc < 2) {
- fprintf(stderr, "No directory given for --perf-dir.\n");
- usage(perf_usage_string);
- }
- setenv(PERF_DIR_ENVIRONMENT, (*argv)[1], 1);
- if (envchanged)
- *envchanged = 1;
- (*argv)++;
- (*argc)--;
- handled++;
- } else if (!prefixcmp(cmd, CMD_PERF_DIR)) {
- setenv(PERF_DIR_ENVIRONMENT, cmd + strlen(CMD_PERF_DIR), 1);
- if (envchanged)
- *envchanged = 1;
- } else if (!strcmp(cmd, "--work-tree")) {
- if (*argc < 2) {
- fprintf(stderr, "No directory given for --work-tree.\n");
- usage(perf_usage_string);
- }
- setenv(PERF_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
- if (envchanged)
- *envchanged = 1;
- (*argv)++;
- (*argc)--;
- } else if (!prefixcmp(cmd, CMD_WORK_TREE)) {
- setenv(PERF_WORK_TREE_ENVIRONMENT, cmd + strlen(CMD_WORK_TREE), 1);
- if (envchanged)
- *envchanged = 1;
- } else if (!strcmp(cmd, "--debugfs-dir")) {
- if (*argc < 2) {
- fprintf(stderr, "No directory given for --debugfs-dir.\n");
- usage(perf_usage_string);
- }
- perf_debugfs_set_path((*argv)[1]);
- if (envchanged)
- *envchanged = 1;
- (*argv)++;
- (*argc)--;
- } else if (!prefixcmp(cmd, CMD_DEBUGFS_DIR)) {
- perf_debugfs_set_path(cmd + strlen(CMD_DEBUGFS_DIR));
- fprintf(stderr, "dir: %s\n", debugfs_mountpoint);
- if (envchanged)
- *envchanged = 1;
- } else if (!strcmp(cmd, "--list-cmds")) {
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(commands); i++) {
- struct cmd_struct *p = commands+i;
- printf("%s ", p->cmd);
- }
- exit(0);
- } else {
- fprintf(stderr, "Unknown option: %s\n", cmd);
- usage(perf_usage_string);
- }
-
- (*argv)++;
- (*argc)--;
- handled++;
- }
- return handled;
-}
-
-static int handle_alias(int *argcp, const char ***argv)
-{
- int envchanged = 0, ret = 0, saved_errno = errno;
- int count, option_count;
- const char **new_argv;
- const char *alias_command;
- char *alias_string;
-
- alias_command = (*argv)[0];
- alias_string = alias_lookup(alias_command);
- if (alias_string) {
- if (alias_string[0] == '!') {
- if (*argcp > 1) {
- struct strbuf buf;
-
- strbuf_init(&buf, PATH_MAX);
- strbuf_addstr(&buf, alias_string);
- sq_quote_argv(&buf, (*argv) + 1, PATH_MAX);
- free(alias_string);
- alias_string = buf.buf;
- }
- ret = system(alias_string + 1);
- if (ret >= 0 && WIFEXITED(ret) &&
- WEXITSTATUS(ret) != 127)
- exit(WEXITSTATUS(ret));
- die("Failed to run '%s' when expanding alias '%s'",
- alias_string + 1, alias_command);
- }
- count = split_cmdline(alias_string, &new_argv);
- if (count < 0)
- die("Bad alias.%s string", alias_command);
- option_count = handle_options(&new_argv, &count, &envchanged);
- if (envchanged)
- die("alias '%s' changes environment variables\n"
- "You can use '!perf' in the alias to do this.",
- alias_command);
- memmove(new_argv - option_count, new_argv,
- count * sizeof(char *));
- new_argv -= option_count;
-
- if (count < 1)
- die("empty alias for %s", alias_command);
-
- if (!strcmp(alias_command, new_argv[0]))
- die("recursive alias: %s", alias_command);
-
- new_argv = realloc(new_argv, sizeof(char *) *
- (count + *argcp + 1));
- /* insert after command name */
- memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp);
- new_argv[count + *argcp] = NULL;
-
- *argv = new_argv;
- *argcp += count - 1;
-
- ret = 1;
- }
-
- errno = saved_errno;
-
- return ret;
-}
-
-const char perf_version_string[] = PERF_VERSION;
-
-#define RUN_SETUP (1<<0)
-#define USE_PAGER (1<<1)
-/*
- * require working tree to be present -- anything uses this needs
- * RUN_SETUP for reading from the configuration file.
- */
-#define NEED_WORK_TREE (1<<2)
-
-static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
-{
- int status;
- struct stat st;
- const char *prefix;
-
- prefix = NULL;
- if (p->option & RUN_SETUP)
- prefix = NULL; /* setup_perf_directory(); */
-
- if (use_browser == -1)
- use_browser = check_browser_config(p->cmd);
-
- if (use_pager == -1 && p->option & RUN_SETUP)
- use_pager = check_pager_config(p->cmd);
- if (use_pager == -1 && p->option & USE_PAGER)
- use_pager = 1;
- commit_pager_choice();
-
- status = p->fn(argc, argv, prefix);
- exit_browser(status);
-
- if (status)
- return status & 0xff;
-
- /* Somebody closed stdout? */
- if (fstat(fileno(stdout), &st))
- return 0;
- /* Ignore write errors for pipes and sockets.. */
- if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode))
- return 0;
-
- status = 1;
- /* Check for ENOSPC and EIO errors.. */
- if (fflush(stdout)) {
- fprintf(stderr, "write failure on standard output: %s", strerror(errno));
- goto out;
- }
- if (ferror(stdout)) {
- fprintf(stderr, "unknown write failure on standard output");
- goto out;
- }
- if (fclose(stdout)) {
- fprintf(stderr, "close failed on standard output: %s", strerror(errno));
- goto out;
- }
- status = 0;
-out:
- return status;
-}
-
-static void handle_internal_command(int argc, const char **argv)
-{
- const char *cmd = argv[0];
- unsigned int i;
- static const char ext[] = STRIP_EXTENSION;
-
- if (sizeof(ext) > 1) {
- i = strlen(argv[0]) - strlen(ext);
- if (i > 0 && !strcmp(argv[0] + i, ext)) {
- char *argv0 = strdup(argv[0]);
- argv[0] = cmd = argv0;
- argv0[i] = '\0';
- }
- }
-
- /* Turn "perf cmd --help" into "perf help cmd" */
- if (argc > 1 && !strcmp(argv[1], "--help")) {
- argv[1] = argv[0];
- argv[0] = cmd = "help";
- }
-
- for (i = 0; i < ARRAY_SIZE(commands); i++) {
- struct cmd_struct *p = commands+i;
- if (strcmp(p->cmd, cmd))
- continue;
- exit(run_builtin(p, argc, argv));
- }
-}
-
-static void execv_dashed_external(const char **argv)
-{
- struct strbuf cmd = STRBUF_INIT;
- const char *tmp;
- int status;
-
- strbuf_addf(&cmd, "perf-%s", argv[0]);
-
- /*
- * argv[0] must be the perf command, but the argv array
- * belongs to the caller, and may be reused in
- * subsequent loop iterations. Save argv[0] and
- * restore it on error.
- */
- tmp = argv[0];
- argv[0] = cmd.buf;
-
- /*
- * if we fail because the command is not found, it is
- * OK to return. Otherwise, we just pass along the status code.
- */
- status = run_command_v_opt(argv, 0);
- if (status != -ERR_RUN_COMMAND_EXEC) {
- if (IS_RUN_COMMAND_ERR(status))
- die("unable to run '%s'", argv[0]);
- exit(-status);
- }
- errno = ENOENT; /* as if we called execvp */
-
- argv[0] = tmp;
-
- strbuf_release(&cmd);
-}
-
-static int run_argv(int *argcp, const char ***argv)
-{
- int done_alias = 0;
-
- while (1) {
- /* See if it's an internal command */
- handle_internal_command(*argcp, *argv);
-
- /* .. then try the external ones */
- execv_dashed_external(*argv);
-
- /* It could be an alias -- this works around the insanity
- * of overriding "perf log" with "perf show" by having
- * alias.log = show
- */
- if (done_alias || !handle_alias(argcp, argv))
- break;
- done_alias = 1;
- }
-
- return done_alias;
-}
-
-static void pthread__block_sigwinch(void)
-{
- sigset_t set;
-
- sigemptyset(&set);
- sigaddset(&set, SIGWINCH);
- pthread_sigmask(SIG_BLOCK, &set, NULL);
-}
-
-void pthread__unblock_sigwinch(void)
-{
- sigset_t set;
-
- sigemptyset(&set);
- sigaddset(&set, SIGWINCH);
- pthread_sigmask(SIG_UNBLOCK, &set, NULL);
-}
-
-int main(int argc, const char **argv)
-{
- const char *cmd;
-
- page_size = sysconf(_SC_PAGE_SIZE);
-
- cmd = perf_extract_argv0_path(argv[0]);
- if (!cmd)
- cmd = "perf-help";
- /* get debugfs mount point from /proc/mounts */
- perf_debugfs_mount(NULL);
- /*
- * "perf-xxxx" is the same as "perf xxxx", but we obviously:
- *
- * - cannot take flags in between the "perf" and the "xxxx".
- * - cannot execute it externally (since it would just do
- * the same thing over again)
- *
- * So we just directly call the internal command handler, and
- * die if that one cannot handle it.
- */
- if (!prefixcmp(cmd, "perf-")) {
- cmd += 5;
- argv[0] = cmd;
- handle_internal_command(argc, argv);
- fprintf(stderr, "cannot handle %s internally", cmd);
- goto out;
- }
-
- /* Look for flags.. */
- argv++;
- argc--;
- handle_options(&argv, &argc, NULL);
- commit_pager_choice();
- set_buildid_dir();
-
- if (argc > 0) {
- if (!prefixcmp(argv[0], "--"))
- argv[0] += 2;
- } else {
- /* The user didn't specify a command; give them help */
- printf("\n usage: %s\n\n", perf_usage_string);
- list_common_cmds_help();
- printf("\n %s\n\n", perf_more_info_string);
- goto out;
- }
- cmd = argv[0];
-
- test_attr__init();
-
- /*
- * We use PATH to find perf commands, but we prepend some higher
- * precedence paths: the "--exec-path" option, the PERF_EXEC_PATH
- * environment, and the $(perfexecdir) from the Makefile at build
- * time.
- */
- setup_path();
- /*
- * Block SIGWINCH notifications so that the thread that wants it can
- * unblock and get syscalls like select interrupted instead of waiting
- * forever while the signal goes to some other non interested thread.
- */
- pthread__block_sigwinch();
-
- while (1) {
- static int done_help;
- int was_alias = run_argv(&argc, &argv);
-
- if (errno != ENOENT)
- break;
-
- if (was_alias) {
- fprintf(stderr, "Expansion of alias '%s' failed; "
- "'%s' is not a perf-command\n",
- cmd, argv[0]);
- goto out;
- }
- if (!done_help) {
- cmd = argv[0] = help_unknown_cmd(cmd);
- done_help = 1;
- } else
- break;
- }
-
- fprintf(stderr, "Failed to run command '%s': %s\n",
- cmd, strerror(errno));
-out:
- return 1;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-11 17:44:32 +0000