perf options: Introduce OPT_U64

We have things like user_interval (-c/--count) in 'perf record' that
needs this.

Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c
index ed88764..b05d51d 100644
--- a/tools/perf/util/parse-options.c
+++ b/tools/perf/util/parse-options.c
@@ -60,6 +60,7 @@
 		case OPTION_STRING:
 		case OPTION_INTEGER:
 		case OPTION_LONG:
+		case OPTION_U64:
 		default:
 			break;
 		}
@@ -141,6 +142,22 @@
 			return opterror(opt, "expects a numerical value", flags);
 		return 0;
 
+	case OPTION_U64:
+		if (unset) {
+			*(u64 *)opt->value = 0;
+			return 0;
+		}
+		if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
+			*(u64 *)opt->value = opt->defval;
+			return 0;
+		}
+		if (get_arg(p, opt, flags, &arg))
+			return -1;
+		*(u64 *)opt->value = strtoull(arg, (char **)&s, 10);
+		if (*s)
+			return opterror(opt, "expects a numerical value", flags);
+		return 0;
+
 	case OPTION_END:
 	case OPTION_ARGUMENT:
 	case OPTION_GROUP:
@@ -487,6 +504,7 @@
 		case OPTION_SET_INT:
 		case OPTION_SET_PTR:
 		case OPTION_LONG:
+		case OPTION_U64:
 			break;
 		}