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);