-/*
- * 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: %zu, kernel default: %zu)\n",
- default_get_channel_subbuf_size(),
- default_get_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, " --output TYPE Channel output type (Values: %s, %s)\n",
- output_mmap, output_splice);
- fprintf(ofp, " --buffers-uid Use per UID buffer (-u only)\n");
- fprintf(ofp, " --buffers-pid Use per PID buffer (-u only)\n");
- fprintf(ofp, " --buffers-global Use shared buffer for the whole system (-k only)\n");
- fprintf(ofp, " -C, --tracefile-size SIZE\n");
- fprintf(ofp, " Maximum size of of each tracefile within a stream (in bytes).\n");
- fprintf(ofp, " -W, --tracefile-count COUNT\n");
- fprintf(ofp, " Used in conjunction with -C option, this will limit the number\n");
- fprintf(ofp, " of files created to the specified count.\n");
- fprintf(ofp, "\n");
-}
-