[PATCH 3/3] io_submit.stp: let the user know when the script is loaded

[Jeff Moyer]

I often find myself checking lsmod to see when the script is finally
ready to collect data.  Just print a message from the begin probe to
make it obvious when the script is ready.

Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
---
 testsuite/systemtap.examples/io/io_submit.stp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/testsuite/systemtap.examples/io/io_submit.stp b/testsuite/systemtap.examples/io/io_submit.stp
index 62d15c9..7e8c8d4 100755
--- a/testsuite/systemtap.examples/io/io_submit.stp
+++ b/testsuite/systemtap.examples/io/io_submit.stp
@@ -53,6 +53,10 @@ probe kernel.function("schedule") {
   }
 }
 
+probe begin {
+  printf("Ready!\n")
+}
+
 /*
  * when stap is done (via ctrl-c) go through the record of all the
  * trace paths and print the 30 most common.
-- 
2.8.2.335.g4bb51ae