only check file descriptor in tracemark() function

If the tracemark_fd is >= 0, then we know we can write to the
trace_marker file. We only need to check that and not version of
the kernel or anything else at every instance of calling tracemark().

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

src/cyclictest/cyclictest.c

@@ -340,7 +340,7 @@ static void tracemark(char *comment)
 {
 	/* bail out if we're not tracing */
 	/* or if the kernel doesn't support trace_mark */
-	if (!tracelimit || kernelversion < KV_26_33 || tracemark_fd < 0)
+	if (tracemark_fd < 0)
 		return;
 	write(tracemark_fd, comment, strlen(comment));
 }