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| author |   Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2023-08-23 01:26:52 +0900 |
|---|---|---|
| committer | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2023-08-23 09:41:55 +0900 |
| commit | d892d3d3d885d6b3c5635671e43460dbe8fb32eb (patch) | |
| tree | 5365d839bea93504f12dd0f63e6e115a473ee5ed /tools/testing/selftests/ftrace | |
| parent | tracing/fprobe-event: Assume fprobe is a return event by $retval (diff) | |
| download | wireguard-linux-d892d3d3d885d6b3c5635671e43460dbe8fb32eb.tar.xz wireguard-linux-d892d3d3d885d6b3c5635671e43460dbe8fb32eb.zip | |
selftests/ftrace: Add BTF fields access testcases
Add test cases for accessing the data structure fields using BTF info.
This includes the field access from parameters and retval, and accessing
string information.
Link: https://lore.kernel.org/all/169272161265.160970.14048619786574971276.stgit@devnote2/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'tools/testing/selftests/ftrace')
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc | 20 | ||||
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc | 8 |
2 files changed, 28 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc index f34b14ef9781..b9c21a81d248 100644 --- a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc @@ -5,6 +5,7 @@ KPROBES= FPROBES= +FIELDS= if grep -qF "p[:[<group>/][<event>]] <place> [<args>]" README ; then KPROBES=yes @@ -12,6 +13,9 @@ fi if grep -qF "f[:[<group>/][<event>]] <func-name>[%return] [<args>]" README ; then FPROBES=yes fi +if grep -qF "<argname>[->field[->field|.field...]]" README ; then + FIELDS=yes +fi if [ -z "$KPROBES" -a -z "$FPROBES" ] ; then exit_unsupported @@ -21,6 +25,9 @@ echo 0 > events/enable echo > dynamic_events TP=kfree +TP2=kmem_cache_alloc +TP3=getname_flags +TP4=sched_wakeup if [ "$FPROBES" ] ; then echo "f:fpevent $TP object" >> dynamic_events @@ -33,6 +40,7 @@ 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 +53,18 @@ fi echo > dynamic_events +if [ "$FIELDS" ] ; then +echo "t:tpevent ${TP2} obj_size=s->object_size" >> dynamic_events +echo "f:fpevent ${TP3}%return path=\$retval->name:string" >> dynamic_events +echo "t:tpevent2 ${TP4} p->se.group_node.next->prev" >> dynamic_events + +grep -q "tpevent .*obj_size=s->object_size" dynamic_events +grep -q "fpevent.*path=\$retval->name:string" dynamic_events +grep -q 'tpevent2 .*p->se.group_node.next->prev' dynamic_events + +echo > dynamic_events +fi + if [ "$KPROBES" ] ; then echo "p:kpevent $TP object" >> dynamic_events grep -q "kpevent.*object=object" dynamic_events diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc index 72563b2e0812..20e42c030095 100644 --- a/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc +++ b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc @@ -103,6 +103,14 @@ check_error 'f vfs_read%return ^$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 + +if grep -qF "<argname>[->field[->field|.field...]]" README ; then +check_error 'f vfs_read%return $retval->^foo' # NO_PTR_STRCT +check_error 'f vfs_read file->^foo' # NO_BTF_FIELD +check_error 'f vfs_read file^-.foo' # BAD_HYPHEN +check_error 'f vfs_read ^file:string' # BAD_TYPE4STR +fi + else check_error 'f vfs_read ^$arg*' # NOSUP_BTFARG check_error 't kfree ^$arg*' # NOSUP_BTFARG |