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Message-ID: <20251004235001.133111-5-seokwoo.chung130@gmail.com> Date: Sun, 5 Oct 2025 08:46:58 +0900 From: Ryan Chung <seokwoo.chung130@...il.com> To: rostedt@...dmis.org, mhiramat@...nel.org Cc: mathieu.desnoyers@...icios.com, shuah@...nel.org, hca@...ux.ibm.com, corbet@....net, linux-trace-kernel@...r.kernel.org, linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, linux-doc@...r.kernel.org, seokwoo.chung130@...il.com Subject: [PATCH v3 4/5] selftests/ftrace: dynevent: add reject cases for list/:entry/:exit Signed-off-by: Ryan Chung <seokwoo.chung130@...il.com> --- .../test.d/dynevent/add_remove_fprobe.tc | 121 ++++++++++++++++++ 1 file changed, 121 insertions(+) diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc index 2506f464811b..d5761d31217c 100644 --- a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc @@ -2,6 +2,8 @@ # SPDX-License-Identifier: GPL-2.0 # description: Generic dynamic event - add/remove fprobe events # requires: dynamic_events "f[:[<group>/][<event>]] <func-name>[%return] [<args>]":README +# Note: list-style specs and :entry/:exit may be unavailable on older kernels. +# These tests auto-skip at runtime if the list form is rejected by tracefs. echo 0 > events/enable echo > dynamic_events @@ -89,4 +91,123 @@ if [ $cnt -ne $ocnt ]; then exit_fail fi +# ---- New accept cases for list syntax with :entry/:exit and !-exclusions ---- +if echo "f:test/__list_check $PLACE,$PLACE3" >> dynamic_events 2> /dev/null; then + # Clean the probe added by the guard + echo "-:test/__list_check" >> dynamic_events + + # List default (entry) with exclusion, explicit group/event + echo "f:test/list_entry $PLACE,!$PLACE2,$PLACE3" >> dynamic_events + grep -q "test/list_entry" dynamic_events + test -d events/test/list_entry + + echo 1 > events/test/list_entry/enable + # Should attach to PLACE and PLACE3, but not PLACE2 + grep -q "$PLACE" enabled_functions + grep -q "$PLACE3" enabled_functions + ! grep -q "$PLACE2" enabled_functions + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $((ocnt + 2)) ]; then + exit_fail + fi + + # Disable and remove; count should be back to baseline + echo 0 > events/test/list_entry/enable + echo "-:test/list_entry" >> dynamic_events + ! grep -q "test/list_entry" dynamic_events + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $ocnt ]; then + exit_fail + fi + + # List with explicit :entry suffix (same behavior as default) + echo "f:test/list_entry_exp $PLACE,!$PLACE2,$PLACE3:entry" >> dynamic_events + grep -q "test/list_entry_exp" dynamic_events + test -d events/test/list_entry_exp + + echo 1 > events/test/list_entry_exp/enable + grep -q "$PLACE" enabled_functions + grep -q "$PLACE3" enabled_functions + ! grep -q "$PLACE2" enabled_functions + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $((ocnt + 2)) ]; then + exit_fail + fi + + echo 0 > events/test/list_entry_exp/enable + echo "-:test/list_entry_exp" >> dynamic_events + ! grep -q "test/list_entry_exp" dynamic_events + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $ocnt ]; then + exit_fail + fi + + # List with :exit suffix across the same set + echo "f:test/list_exit $PLACE,!$PLACE2,$PLACE3:exit" >> dynamic_events + grep -q "test/list_exit" dynamic_events + test -d events/test/list_exit + + echo 1 > events/test/list_exit/enable + # On return probes, enabled_functions still reflects attached functions. + grep -q "$PLACE" enabled_functions + grep -q "$PLACE3" enabled_functions + ! grep -q "$PLACE2" enabled_functions + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $((ocnt + 2)) ]; then + exit_fail + fi + + echo 0 > events/test/list_exit/enable + echo "-:test/list_exit" >> dynamic_events + ! grep -q "test/list_exit" dynamic_events + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $ocnt ]; then + exit_fail + fi + + # Enabling entry and exit together does not double-count functions + echo "f:test/list_both_e $PLACE,!$PLACE2,$PLACE3" >> dynamic_events + echo "f:test/list_both_x $PLACE,!$PLACE2,$PLACE3:exit" >> dynamic_events + grep -q "test/list_both_e" dynamic_events + grep -q "test/list_both_x" dynamic_events + test -d events/test/list_both_e + test -d events/test/list_both_x + + echo 1 > events/test/list_both_e/enable + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $((ocnt + 2)) ]; then + exit_fail + fi + + # Enabling :exit for the same set should keep the count the same + echo 1 > events/test/list_both_x/enable + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $((ocnt + 2)) ]; then + exit_fail + fi + + # Disable one; count should remain (the other still holds the attach) + echo 0 > events/test/list_both_e/enable + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $((ocnt + 2)) ]; then + exit_fail + fi + + # Disable the other; count returns to baseline + echo 0 > events/test/list_both_x/enable + cnt=`cat enabled_functions | wc -l` + if [ $cnt -ne $ocnt ]; then + exit_fail + fi + + # Remove both definitions + echo "-:test/list_both_e" >> dynamic_events + echo "-:test/list_both_x" >> dynamic_events + ! grep -q "test/list_both_e" dynamic_events + ! grep -q "test/list_both_x" dynamic_events +else + # List-form not supported; skip silently + : +fi + clear_trace -- 2.43.0
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