X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=lttng%2Fcommands%2Fenable_events.c;h=45cef9f60c7a6b55cd76c3ad7dc6379b9e951a2e;hp=85fd86a08c4b89e27692eacaa736b99c947d84a0;hb=e4baff1ed855ca743e95068ca6449fd906d2d833;hpb=a54bd42d73836eb9033a31c3f68be5b7e8612dce diff --git a/lttng/commands/enable_events.c b/lttng/commands/enable_events.c index 85fd86a08..45cef9f60 100644 --- a/lttng/commands/enable_events.c +++ b/lttng/commands/enable_events.c @@ -34,10 +34,10 @@ static char *opt_event_list; static int opt_event_type; static char *opt_kernel; -static char *opt_cmd_name; static char *opt_session_name; static int opt_pid_all; static int opt_userspace; +static char *opt_cmd_name; static int opt_enable_all; static pid_t opt_pid; static char *opt_probe; @@ -47,13 +47,13 @@ static char *opt_channel_name; enum { OPT_HELP = 1, - OPT_USERSPACE, OPT_TRACEPOINT, - OPT_MARKER, OPT_PROBE, OPT_FUNCTION, OPT_FUNCTION_ENTRY, OPT_SYSCALL, + OPT_USERSPACE, + OPT_TRACEPOINT_LOGLEVEL, }; static struct lttng_handle *handle; @@ -65,15 +65,21 @@ static struct poptOption long_options[] = { {"all-events", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, - {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, 0, OPT_USERSPACE, 0, 0}, + {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, {"all", 0, POPT_ARG_VAL, &opt_pid_all, 1, 0, 0}, {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, - {"marker", 0, POPT_ARG_NONE, 0, OPT_MARKER, 0, 0}, - {"probe", 0, POPT_ARG_STRING, 0, OPT_PROBE, 0, 0}, - {"function", 0, POPT_ARG_STRING, 0, OPT_FUNCTION, 0, 0}, - {"function:entry", 0, POPT_ARG_STRING, 0, OPT_FUNCTION_ENTRY, 0, 0}, - {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, + {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, + {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, +#if 0 + /* + * Currently removed from lttng kernel tracer. Removed from + * lttng UI to discourage its use. + */ + {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, +#endif + {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, + {"loglevel", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT_LOGLEVEL, 0, 0}, {0, 0, 0, 0, 0, 0, 0} }; @@ -95,6 +101,7 @@ static void usage(FILE *ofp) fprintf(ofp, "\n"); fprintf(ofp, "Event options:\n"); fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); + fprintf(ofp, " --loglevel Tracepoint loglevel\n"); fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); fprintf(ofp, " Dynamic probe.\n"); fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); @@ -103,10 +110,11 @@ static void usage(FILE *ofp) fprintf(ofp, " Dynamic function entry/return probe.\n"); fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); +#if 0 fprintf(ofp, " --function:entry symbol\n"); fprintf(ofp, " Function tracer event\n"); +#endif fprintf(ofp, " --syscall System call event\n"); - fprintf(ofp, " --marker User-space marker (deprecated)\n"); fprintf(ofp, "\n"); } @@ -201,10 +209,23 @@ static int enable_events(char *session_name) channel_name = opt_channel_name; } + if (opt_kernel && opt_userspace) { + MSG("Choose only one of --kernel or --userspace"); + ret = CMD_FATAL; + goto error; + } /* Create lttng domain */ if (opt_kernel) { dom.type = LTTNG_DOMAIN_KERNEL; } + if (opt_userspace) { + /* TODO + * LTTNG_DOMAIN_UST_EXEC_NAME, + * LTTNG_DOMAIN_UST_PID, + * LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN + */ + dom.type = LTTNG_DOMAIN_UST; + } handle = lttng_create_handle(session_name, &dom); if (handle == NULL) { @@ -213,33 +234,39 @@ static int enable_events(char *session_name) } if (opt_enable_all) { + /* Default setup for enable all */ + ev.name[0] = '\0'; + ev.type = opt_event_type; + + ret = lttng_enable_event(handle, &ev, channel_name); + if (ret < 0) { + goto error; + } + switch (opt_event_type) { case LTTNG_EVENT_TRACEPOINT: - if (opt_kernel) { - ret = lttng_enable_event(handle, NULL, channel_name); - if (ret == 0) { - MSG("All kernel events are enabled in channel %s", channel_name); - } - goto error; - } - /* TODO: User-space tracer */ + MSG("All %s tracepoints are enabled in channel %s", + opt_kernel ? "kernel" : "UST", channel_name); break; case LTTNG_EVENT_SYSCALL: if (opt_kernel) { - ev.name[0] = '\0'; - ev.type = opt_event_type; - - ret = lttng_enable_event(handle, &ev, channel_name); - if (ret == 0) { - MSG("All kernel system calls are enabled in channel %s", channel_name); - } - goto error; + MSG("All kernel system calls are enabled in channel %s", + channel_name); } break; + case LTTNG_EVENT_ALL: + MSG("All %s events are enabled in channel %s", + opt_kernel ? "kernel" : "UST", channel_name); + break; default: - MSG("Enable all not supported for this instrumentation type."); + /* + * We should not be here since + * lttng_enable_event should have failed on the + * event type. + */ goto error; } + goto end; } /* Strip event list */ @@ -255,6 +282,9 @@ static int enable_events(char *session_name) ev.type = opt_event_type; switch (opt_event_type) { + case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ + ev.type = LTTNG_EVENT_TRACEPOINT; + /* Fall-through */ case LTTNG_EVENT_TRACEPOINT: break; case LTTNG_EVENT_PROBE: @@ -294,13 +324,46 @@ static int enable_events(char *session_name) } } else if (opt_userspace) { /* User-space tracer action */ /* - * TODO: Waiting on lttng UST 2.0 + * TODO: only supporting pid_all tracing for + * now. Should have different domain based on + * opt_pid. */ - if (opt_pid_all) { - } else if (opt_pid != 0) { + if (!opt_pid_all) { + MSG("Only supporting tracing all UST processes (-u --all) for now."); + ret = CMD_NOT_IMPLEMENTED; + goto error; + } + DBG("Enabling UST event %s for channel %s", + event_name, channel_name); + + switch (opt_event_type) { + case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ + /* Fall-through */ + case LTTNG_EVENT_TRACEPOINT: + /* Copy name and type of the event */ + ev.type = LTTNG_EVENT_TRACEPOINT; + strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); + ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; + break; + case LTTNG_EVENT_TRACEPOINT_LOGLEVEL: + /* Copy name and type of the event */ + ev.type = LTTNG_EVENT_TRACEPOINT_LOGLEVEL; + strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); + ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; + break; + case LTTNG_EVENT_PROBE: + case LTTNG_EVENT_FUNCTION: + case LTTNG_EVENT_FUNCTION_ENTRY: + case LTTNG_EVENT_SYSCALL: + default: + ret = CMD_NOT_IMPLEMENTED; + goto error; + } + + ret = lttng_enable_event(handle, &ev, channel_name); + if (ret == 0) { + MSG("UST event %s created in channel %s", event_name, channel_name); } - ret = CMD_NOT_IMPLEMENTED; - goto error; } else { ERR("Please specify a tracer (--kernel or --userspace)"); goto error; @@ -310,6 +373,7 @@ static int enable_events(char *session_name) event_name = strtok(NULL, ","); } +end: error: if (opt_channel_name == NULL) { free(channel_name); @@ -334,7 +398,7 @@ int cmd_enable_events(int argc, const char **argv) poptReadDefaultConfig(pc, 0); /* Default event type */ - opt_event_type = LTTNG_EVENT_TRACEPOINT; + opt_event_type = LTTNG_EVENT_ALL; while ((opt = poptGetNextOpt(pc)) != -1) { switch (opt) { @@ -342,31 +406,27 @@ int cmd_enable_events(int argc, const char **argv) usage(stderr); ret = CMD_SUCCESS; goto end; - case OPT_USERSPACE: - opt_userspace = 1; - opt_cmd_name = poptGetOptArg(pc); - break; case OPT_TRACEPOINT: opt_event_type = LTTNG_EVENT_TRACEPOINT; break; - case OPT_MARKER: - ret = CMD_NOT_IMPLEMENTED; - goto end; case OPT_PROBE: opt_event_type = LTTNG_EVENT_PROBE; - opt_probe = poptGetOptArg(pc); break; case OPT_FUNCTION: opt_event_type = LTTNG_EVENT_FUNCTION; - opt_function = poptGetOptArg(pc); break; case OPT_FUNCTION_ENTRY: opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; - opt_function_entry_symbol = poptGetOptArg(pc); break; case OPT_SYSCALL: opt_event_type = LTTNG_EVENT_SYSCALL; break; + case OPT_USERSPACE: + opt_userspace = 1; + break; + case OPT_TRACEPOINT_LOGLEVEL: + opt_event_type = LTTNG_EVENT_TRACEPOINT_LOGLEVEL; + break; default: usage(stderr); ret = CMD_UNDEFINED;