-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
- fprintf(ofp, "usage: lttng enable-channel NAME[,NAME2,...] [-u|-k] [OPTIONS]\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Options:\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " --list-options Simple listing of options\n");
- fprintf(ofp, " -s, --session NAME Apply to session name\n");
- fprintf(ofp, " -k, --kernel Apply to the kernel tracer\n");
- fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Channel options:\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 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, " Needs to be a power of 2 for\n");
- fprintf(ofp, " kernel and ust tracers\n");
- fprintf(ofp, " --num-subbuf NUM Number of subbufers\n");
- fprintf(ofp, " (default: %u)\n",
- DEFAULT_CHANNEL_SUBBUF_NUM);
- fprintf(ofp, " Needs to be a power of 2 for\n");
- fprintf(ofp, " kernel and ust tracers\n");
- fprintf(ofp, " --switch-timer USEC Switch timer interval in usec (default: %u)\n",
- DEFAULT_CHANNEL_SWITCH_TIMER);
- fprintf(ofp, " --read-timer USEC Read timer interval in usec (default: %u)\n",
- DEFAULT_CHANNEL_READ_TIMER);
- fprintf(ofp, "\n");
-}
-