perf_counter: Fix up swcounter throttling

/me dons the brown paper bag.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/perf_counter.c

@@ -3634,7 +3634,7 @@ static void perf_swcounter_overflow(struct perf_counter *counter,
 			 */
 			break;
 		}
-		throttle = 0;
+		throttle = 1;
 	}
 }