case LTTNG_CREATE_SESSION:
case LTTNG_LIST_SESSIONS:
case LTTNG_LIST_TRACEPOINTS:
+ case LTTNG_CALIBRATE:
break;
default:
DBG("Getting session %s by name", cmd_ctx->lsm->session.name);
}
/*
- * Check domain type for specifif "pre-action".
+ * Check domain type for specific "pre-action".
*/
switch (cmd_ctx->lsm->domain.type) {
case LTTNG_DOMAIN_KERNEL:
}
/* Need a session for kernel command */
- if (cmd_ctx->lsm->cmd_type != LTTNG_LIST_TRACEPOINTS &&
- cmd_ctx->session->kernel_session == NULL) {
-
- ret = create_kernel_session(cmd_ctx->session);
- if (ret < 0) {
- ret = LTTCOMM_KERN_SESS_FAIL;
- goto error;
- }
-
- /* Start the kernel consumer daemon */
- if (kconsumerd_pid == 0) {
- ret = start_kconsumerd();
+ switch (cmd_ctx->lsm->cmd_type) {
+ case LTTNG_CREATE_SESSION:
+ case LTTNG_LIST_SESSIONS:
+ case LTTNG_LIST_TRACEPOINTS:
+ case LTTNG_CALIBRATE:
+ break;
+ default:
+ if (cmd_ctx->session->kernel_session == NULL) {
+ ret = create_kernel_session(cmd_ctx->session);
if (ret < 0) {
+ ret = LTTCOMM_KERN_SESS_FAIL;
goto error;
}
+
+ /* Start the kernel consumer daemon */
+ if (kconsumerd_pid == 0) {
+ ret = start_kconsumerd();
+ if (ret < 0) {
+ goto error;
+ }
+ }
}
}
break;
ret = LTTCOMM_OK;
break;
}
+
+ case LTTNG_CALIBRATE:
+ {
+ /* Setup lttng message with no payload */
+ ret = setup_lttng_msg(cmd_ctx, 0);
+ if (ret < 0) {
+ goto setup_error;
+ }
+
+ switch (cmd_ctx->lsm->domain.type) {
+ case LTTNG_DOMAIN_KERNEL:
+ {
+ struct lttng_kernel_calibrate kcalibrate;
+
+ kcalibrate.type = cmd_ctx->lsm->u.calibrate.type;
+ ret = kernel_calibrate(kernel_tracer_fd, &kcalibrate);
+ if (ret < 0) {
+ ret = LTTCOMM_KERN_ENABLE_FAIL;
+ goto error;
+ }
+ break;
+ }
+ default:
+ /* TODO: Userspace tracing */
+ ret = LTTCOMM_NOT_IMPLEMENTED;
+ goto error;
+ }
+ ret = LTTCOMM_OK;
+ break;
+ }
+
default:
/* Undefined command */
ret = setup_lttng_msg(cmd_ctx, 0);
--- /dev/null
+/*
+ * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; only version 2
+ * of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#define _GNU_SOURCE
+#include <popt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <ctype.h>
+
+#include "../cmd.h"
+#include "../conf.h"
+#include "../utils.h"
+
+static int opt_event_type;
+static char *opt_kernel;
+static char *opt_cmd_name;
+static int opt_pid_all;
+static int opt_userspace;
+static pid_t opt_pid;
+
+enum {
+ OPT_HELP = 1,
+ OPT_USERSPACE,
+ OPT_TRACEPOINT,
+ OPT_MARKER,
+ OPT_PROBE,
+ OPT_FUNCTION,
+ OPT_FUNCTION_ENTRY,
+};
+
+static struct poptOption long_options[] = {
+ /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
+ {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 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},
+ {"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_NONE, 0, OPT_PROBE, 0, 0},
+ {"function", 0, POPT_ARG_NONE, 0, OPT_FUNCTION, 0, 0},
+ {"function:entry", 0, POPT_ARG_NONE, 0, OPT_FUNCTION_ENTRY, 0, 0},
+ {0, 0, 0, 0, 0, 0, 0}
+};
+
+/*
+ * usage
+ */
+static void usage(FILE *ofp)
+{
+ fprintf(ofp, "usage: lttng calibrate [options] [calibrate_options]\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, " -h, --help Show this help\n");
+ fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
+ fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space tracer\n");
+ fprintf(ofp, " --all If -u, apply on all traceable apps\n");
+ fprintf(ofp, " -p, --pid PID If -u, apply on a specific PID\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "Calibrate options:\n");
+ fprintf(ofp, " --tracepoint Tracepoint event (default)\n");
+ fprintf(ofp, " --probe\n");
+ fprintf(ofp, " Dynamic probe.\n");
+ fprintf(ofp, " --function\n");
+ fprintf(ofp, " Dynamic function entry/return probe.\n");
+ fprintf(ofp, " --function:entry symbol\n");
+ fprintf(ofp, " Function tracer event\n");
+ fprintf(ofp, " --marker User-space marker (deprecated)\n");
+ fprintf(ofp, "\n");
+}
+
+/*
+ * calibrate_lttng
+ *
+ * Calibrate LTTng.
+ */
+static int calibrate_lttng(void)
+{
+ int ret = CMD_SUCCESS;
+ struct lttng_domain dom;
+ struct lttng_calibrate calibrate;
+
+ /* Create lttng domain */
+ if (opt_kernel) {
+ dom.type = LTTNG_DOMAIN_KERNEL;
+ }
+
+ /* Kernel tracer action */
+ if (opt_kernel) {
+ switch (opt_event_type) {
+ case LTTNG_EVENT_TRACEPOINT:
+ DBG("Calibrating kernel tracepoints");
+ break;
+ case LTTNG_EVENT_PROBE:
+ DBG("Calibrating kernel probes");
+ break;
+ case LTTNG_EVENT_FUNCTION:
+ DBG("Calibrating kernel functions");
+ calibrate.type = LTTNG_CALIBRATE_FUNCTION;
+ ret = lttng_calibrate(&dom, &calibrate);
+ break;
+ case LTTNG_EVENT_FUNCTION_ENTRY:
+ DBG("Calibrating kernel function entry");
+ break;
+ default:
+ ret = CMD_NOT_IMPLEMENTED;
+ goto end;
+ }
+ } else if (opt_userspace) { /* User-space tracer action */
+ /*
+ * TODO: Waiting on lttng UST 2.0
+ */
+ if (opt_pid_all) {
+ } else if (opt_pid != 0) {
+ }
+ ret = CMD_NOT_IMPLEMENTED;
+ goto end;
+ } else {
+ ERR("Please specify a tracer (kernel or user-space)");
+ goto end;
+ }
+end:
+ return ret;
+}
+
+/*
+ * cmd_calibrate
+ *
+ * Calibrate LTTng tracer.
+ */
+int cmd_calibrate(int argc, const char **argv)
+{
+ int opt, ret;
+ static poptContext pc;
+
+ pc = poptGetContext(NULL, argc, argv, long_options, 0);
+ poptReadDefaultConfig(pc, 0);
+
+ /* Default event type */
+ opt_event_type = LTTNG_EVENT_TRACEPOINT;
+
+ while ((opt = poptGetNextOpt(pc)) != -1) {
+ switch (opt) {
+ case OPT_HELP:
+ usage(stderr);
+ ret = CMD_SUCCESS;
+ goto end;
+ case OPT_USERSPACE:
+ opt_userspace = 1;
+ opt_cmd_name = poptGetOptArg(pc);
+ break;
+ case OPT_TRACEPOINT:
+ ret = CMD_NOT_IMPLEMENTED;
+ break;
+ case OPT_MARKER:
+ ret = CMD_NOT_IMPLEMENTED;
+ goto end;
+ case OPT_PROBE:
+ ret = CMD_NOT_IMPLEMENTED;
+ break;
+ case OPT_FUNCTION:
+ opt_event_type = LTTNG_EVENT_FUNCTION;
+ break;
+ case OPT_FUNCTION_ENTRY:
+ ret = CMD_NOT_IMPLEMENTED;
+ break;
+ default:
+ usage(stderr);
+ ret = CMD_UNDEFINED;
+ goto end;
+ }
+ }
+
+ ret = calibrate_lttng();
+
+end:
+ return ret;
+}
projects / lttng-tools.git / commitdiff
