Add test for dev.stp tapset functions.

3 files changed, 37 insertions, 0 deletions

diff --git a/testsuite/systemtap.examples/ChangeLog b/testsuite/systemtap.examples/ChangeLog
index 7905119b..1f15cfd3 100644
--- a/testsuite/systemtap.examples/ChangeLog
+++ b/testsuite/systemtap.examples/ChangeLog
@@ -1,3 +1,7 @@
+2008-06-20  William Cohen  <wcohen@redhat.com>
+
+	* traceio2.stp, traceio2.meta: New.
+	
 2008-06-18  William Cohen  <wcohen@redhat.com>
 
 	* sleepingBeauties.stp, sleepingBeauties.meta: New.
diff --git a/testsuite/systemtap.examples/traceio2.meta b/testsuite/systemtap.examples/traceio2.meta
new file mode 100644
index 00000000..89561e71
--- /dev/null
+++ b/testsuite/systemtap.examples/traceio2.meta
@@ -0,0 +1,13 @@
+title: Watch I/O Activity on a Particular Device
+name: traceio2.stp
+version: 1.0
+author: Red Hat
+keywords: io
+subsystem: io
+status: production
+exit: user-controlled
+output: trace
+scope: system-wide
+description: Print out the executable name and process number as reads and writes to the specified device occur.
+test_check: stap -p4 traceio2.stp `stat -c "0x%D" /`
+test_installcheck: stap traceio2.stp `stat -c "0x%D" /` -c "sleep 1"
diff --git a/testsuite/systemtap.examples/traceio2.stp b/testsuite/systemtap.examples/traceio2.stp
new file mode 100644
index 00000000..656c38b3
--- /dev/null
+++ b/testsuite/systemtap.examples/traceio2.stp
@@ -0,0 +1,20 @@
+global device_of_interest
+
+probe begin {
+  /* The following is not the most efficient way to do this.
+      One could directly put the result of usrdev2kerndev()
+      into device_of_interest.  However, want to test out
+      the other device functions */
+  dev = usrdev2kerndev($1)
+  device_of_interest = MKDEV(MAJOR(dev), MINOR(dev))
+}
+
+probe kernel.function ("vfs_write"),
+      kernel.function ("vfs_read")
+{
+        dev_nr = $file->f_path->dentry->d_inode->i_sb->s_dev
+
+        if (dev_nr == device_of_interest)
+                printf ("%s(%d) %s 0x%x\n",
+		        execname(), pid(), probefunc(), dev_nr)
+}