Add a '--list-options' option to each command.

[lttng-tools.git] / src / bin / lttng / commands / calibrate.c

diff --git a/src/bin/lttng/commands/calibrate.c b/src/bin/lttng/commands/calibrate.c
index a0e852f8b03984836717c4d5c5317c08d7cbb696..81eadbfd2b6d54499fd7d657e49a051361ac0c8b 100644 (file)
--- a/src/bin/lttng/commands/calibrate.c
+++ b/src/bin/lttng/commands/calibrate.c
@@ -48,6 +48,7 @@ enum {
        OPT_FUNCTION_ENTRY,
        OPT_SYSCALL,
        OPT_USERSPACE,
+       OPT_LIST_OPTIONS,
 };
 
 static struct lttng_handle *handle;
@@ -75,6 +76,7 @@ static struct poptOption long_options[] = {
        {"function:entry", 0,   POPT_ARG_NONE, 0, OPT_FUNCTION_ENTRY, 0, 0},
 #endif
        {"syscall",        0,   POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0},
+       {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
        {0, 0, 0, 0, 0, 0, 0}
 };
 
@@ -86,6 +88,7 @@ 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, "      --list-options       Simple listing of options\n");
        fprintf(ofp, "  -k, --kernel             Apply for the kernel tracer\n");
 #if 0
        fprintf(ofp, "  -u, --userspace [CMD]    Apply for the user-space tracer\n");
@@ -217,6 +220,10 @@ int cmd_calibrate(int argc, const char **argv)
                case OPT_USERSPACE:
                        opt_userspace = 1;
                        break;
+               case OPT_LIST_OPTIONS:
+                       list_cmd_options(stdout, long_options);
+                       ret = CMD_SUCCESS;
+                       goto end;
                default:
                        usage(stderr);
                        ret = CMD_UNDEFINED;