Print statistics on stderr to be able to redirect bt(5) script output.

From Christian Ludwig.

diff --git a/usr.sbin/btrace/btrace.c b/usr.sbin/btrace/btrace.c
index 98c4af3..ac291a1 100644 (file)
--- a/usr.sbin/btrace/btrace.c
+++ b/usr.sbin/btrace/btrace.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: btrace.c,v 1.83 2024/01/25 20:50:58 mpi Exp $ */
+/*     $OpenBSD: btrace.c,v 1.84 2024/02/05 15:11:35 mpi Exp $ */
 
 /*
  * Copyright (c) 2019 - 2023 Martin Pieuchot <mpi@openbsd.org>
@@ -450,9 +450,9 @@ rules_do(int fd)
                if (ioctl(fd, DTIOCGSTATS, &dtst))
                        warn("DTIOCGSTATS");
 
-               printf("%llu events read\n", dtst.dtst_readevt);
-               printf("%llu events dropped\n", dtst.dtst_dropevt);
-               printf("%llu events filtered\n", bt_filtered);
+               fprintf(stderr, "%llu events read\n", dtst.dtst_readevt);
+               fprintf(stderr, "%llu events dropped\n", dtst.dtst_dropevt);
+               fprintf(stderr, "%llu events filtered\n", bt_filtered);
        }
 }