diff mbox series

[4/5] selftests/ftrace: Add BTF fields access testcases

Message ID 168699525410.528797.4712561681569320532.stgit@mhiramat.roam.corp.google.com (mailing list archive)
State Superseded
Headers show
Series tracing: Improbe BTF support on probe events | expand

Commit Message

Masami Hiramatsu (Google) June 17, 2023, 9:47 a.m. UTC 
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>

Add test cases for accessing the data structure fields using BTF info.
This includes the field access from parameters and retval, and accessing
string information.

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
 .../ftrace/test.d/dynevent/add_remove_btfarg.tc    |   11 +++++++++++
 .../ftrace/test.d/dynevent/fprobe_syntax_errors.tc |    4 ++++
 2 files changed, 15 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
index b89de1771655..1c46906ebf54 100644
--- a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
@@ -21,6 +21,8 @@  echo 0 > events/enable
 echo > dynamic_events
 
 TP=kfree
+TP2=kmem_cache_alloc
+TP3=getname_flags
 
 if [ "$FPROBES" ] ; then
 echo "f:fpevent $TP object" >> dynamic_events
@@ -33,6 +35,7 @@  echo > dynamic_events
 
 echo "f:fpevent $TP "'$arg1' >> dynamic_events
 grep -q "fpevent.*object=object" dynamic_events
+
 echo > dynamic_events
 
 echo "f:fpevent $TP "'$arg*' >> dynamic_events
@@ -45,6 +48,14 @@  fi
 
 echo > dynamic_events
 
+echo "t:tpevent $TP2 name=s->name:string" >> dynamic_events
+echo "f:fpevent ${TP3}%return path=retval->name:string" >> dynamic_events
+
+grep -q "tpevent.*name=s->name:string" dynamic_events
+grep -q "fpevent.*path=retval->name:string" dynamic_events
+
+echo > dynamic_events
+
 if [ "$KPROBES" ] ; then
 echo "p:kpevent $TP object" >> dynamic_events
 grep -q "kpevent.*object=object" dynamic_events
diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc
index 812f5b3f6055..c948095d0d15 100644
--- a/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc
@@ -103,6 +103,10 @@  check_error 'f vfs_read%return ^$arg*'		# NOFENTRY_ARGS
 check_error 'f vfs_read ^hoge'			# NO_BTFARG
 check_error 'f kfree ^$arg10'			# NO_BTFARG (exceed the number of parameters)
 check_error 'f kfree%return ^$retval'		# NO_RETVAL
+check_error 'f vfs_read%return retval->^foo'	# NO_PTR_STRCT
+check_error 'f vfs_read file->^foo'		# NO_BTF_FIELD
+check_error 'f vfs_read file^-.foo'		# BAD_HYPHEN
+check_error 'f vfs_read ^file:string'		# BAD_TYPE4STR
 else
 check_error 'f vfs_read ^$arg*'			# NOSUP_BTFARG
 check_error 't kfree ^$arg*'			# NOSUP_BTFARG