From: Masami Hiramatsu (Google) <[email protected]> Add 'add_remove_wprobe.tc' testcase for testing wprobe event that tests adding and removing operations of the wprobe event.
Signed-off-by: Masami Hiramatsu (Google) <[email protected]> --- Changes in v9: - Fix command check logic to prevent early exit under 'set -e' (errexit) when grep or test fails. - Simplify enable/disable status checks by removing cat pipes. Changes in v8: - Fixed silently test failure path. --- tools/testing/selftests/ftrace/config | 1 .../ftrace/test.d/dynevent/add_remove_wprobe.tc | 63 ++++++++++++++++++++ 2 files changed, 64 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc diff --git a/tools/testing/selftests/ftrace/config b/tools/testing/selftests/ftrace/config index 544de0db5f58..d2f503722020 100644 --- a/tools/testing/selftests/ftrace/config +++ b/tools/testing/selftests/ftrace/config @@ -27,3 +27,4 @@ CONFIG_STACK_TRACER=y CONFIG_TRACER_SNAPSHOT=y CONFIG_UPROBES=y CONFIG_UPROBE_EVENTS=y +CONFIG_WPROBE_EVENTS=y diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc new file mode 100644 index 000000000000..647c37d5e4c8 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc @@ -0,0 +1,63 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - add/remove wprobe events +# requires: dynamic_events "w[:[<group>/][<event>]] [r|w|rw]@<addr>[:<len>]":README + +echo 0 > events/enable +echo > dynamic_events + +# Use jiffies as a variable that is frequently written to. +TARGET=jiffies + +echo "w:my_wprobe w@$TARGET" >> dynamic_events + +if ! grep -q my_wprobe dynamic_events; then + echo "Failed to create wprobe event" + exit_fail +fi + +if [ ! -d events/wprobes/my_wprobe ]; then + echo "Failed to create wprobe event directory" + exit_fail +fi + +echo 1 > events/wprobes/my_wprobe/enable + +# Check if the event is enabled +if ! grep -q 1 events/wprobes/my_wprobe/enable; then + echo "Failed to enable wprobe event" + exit_fail +fi + +# Let some time pass to trigger the breakpoint +sleep 1 + +# Check if we got any trace output +if ! grep -q my_wprobe trace; then + echo "wprobe event was not triggered" + exit_fail +fi + +echo 0 > events/wprobes/my_wprobe/enable + +# Check if the event is disabled +if ! grep -q 0 events/wprobes/my_wprobe/enable; then + echo "Failed to disable wprobe event" + exit_fail +fi + +echo "-:my_wprobe" >> dynamic_events + +if grep -q my_wprobe dynamic_events; then + echo "Failed to remove wprobe event" + exit_fail +fi + +if [ -d events/wprobes/my_wprobe ]; then + echo "Failed to remove wprobe event directory" + exit_fail +fi + +clear_trace + +exit 0
