fprintf(ofp, " -p, --pid PID If -u, apply on a specific PID\n");
fprintf(ofp, "\n");
fprintf(ofp, "Channel options:\n");
- fprintf(ofp, " --discard Discard event when buffers are full (default)\n");
- fprintf(ofp, " --overwrite Flight recorder mode\n");
- fprintf(ofp, " --subbuf-size Subbuffer size in bytes (default: 4096)\n");
- fprintf(ofp, " --num-subbuf Number of subbufers (default: 2)\n");
- fprintf(ofp, " --switch-timer Switch timer interval in usec (default: 0)\n");
- fprintf(ofp, " --read-timer Read timer interval in usec (default: 200)\n");
+ fprintf(ofp, " --discard Discard event when buffers are full%s\n",
+ DEFAULT_CHANNEL_OVERWRITE ? "" : " (default)");
+ fprintf(ofp, " --overwrite Flight recorder mode%s\n",
+ DEFAULT_CHANNEL_OVERWRITE ? " (default)" : "");
+ fprintf(ofp, " --subbuf-size Subbuffer size in bytes\n");
+ fprintf(ofp, " (default: %u, kernel default: %u)\n",
+ DEFAULT_CHANNEL_SUBBUF_SIZE,
+ DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE);
+ fprintf(ofp, " --num-subbuf Number of subbufers\n");
+ fprintf(ofp, " (default: %u, kernel default: %u)\n",
+ DEFAULT_CHANNEL_SUBBUF_NUM,
+ DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM);
+ fprintf(ofp, " --switch-timer Switch timer interval in usec (default: %u)\n",
+ DEFAULT_CHANNEL_SWITCH_TIMER);
+ fprintf(ofp, " --read-timer Read timer interval in usec (default: %u)\n",
+ DEFAULT_CHANNEL_READ_TIMER);
fprintf(ofp, "\n");
}
/*
- * enable_channel
- *
- * Adding channel using the lttng API.
+ * Adding channel using the lttng API.
*/
static int enable_channel(char *session_name)
{
if (opt_kernel) {
dom.type = LTTNG_DOMAIN_KERNEL;
+ } else if (opt_pid != 0) {
+ dom.type = LTTNG_DOMAIN_UST_PID;
+ dom.attr.pid = opt_pid;
+ DBG("PID %d set to lttng handle", opt_pid);
+ } else {
+ ret = CMD_NOT_IMPLEMENTED;
+ goto error;
}
handle = lttng_create_handle(session_name, &dom);
if (handle == NULL) {
ret = -1;
goto error;
+ } else {
+ ERR("Please specify a tracer (--kernel or --userspace)");
+ goto error;
}
- /* Strip event list */
+ /* Strip channel list (format: chan1,chan2,...) */
channel_name = strtok(opt_channels, ",");
while (channel_name != NULL) {
- /* Kernel tracer action */
- if (opt_kernel) {
- DBG("Enabling kernel channel %s", channel_name);
+ /* Copy channel name and normalize it */
+ strncpy(chan.name, channel_name, NAME_MAX);
+ chan.name[NAME_MAX - 1] = '\0';
- /* Copy channel name and normalize it */
- strncpy(chan.name, channel_name, NAME_MAX);
- chan.name[NAME_MAX - 1] = '\0';
+ DBG("Enabling channel %s", channel_name);
- ret = lttng_enable_channel(handle, &chan);
- if (ret < 0) {
- goto error;
- } else {
- MSG("Kernel channel enabled %s", channel_name);
- }
- } 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;
+ ret = lttng_enable_channel(handle, &chan);
+ if (ret < 0) {
goto error;
} else {
- ERR("Please specify a tracer (--kernel or --userspace)");
- goto error;
+ MSG("Channel enabled %s for session %s",
+ channel_name, session_name);
}
/* Next event */
}
/*
- * init_channel_config
- *
- * Default value for channel configuration.
+ * Default value for channel configuration.
*/
static void init_channel_config(void)
{
}
/*
- * Add channel to trace session
+ * Add channel to trace session
*/
int cmd_enable_channels(int argc, const char **argv)
{