diff options
Diffstat (limited to 'tools/testing/selftests/ftrace')
16 files changed, 274 insertions, 13 deletions
diff --git a/tools/testing/selftests/ftrace/settings b/tools/testing/selftests/ftrace/settings new file mode 100644 index 000000000000..e7b9417537fb --- /dev/null +++ b/tools/testing/selftests/ftrace/settings @@ -0,0 +1 @@ +timeout=0 diff --git a/tools/testing/selftests/ftrace/test.d/direct/ftrace-direct.tc b/tools/testing/selftests/ftrace/test.d/direct/ftrace-direct.tc new file mode 100644 index 000000000000..d75a8695bc21 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/direct/ftrace-direct.tc @@ -0,0 +1,69 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test ftrace direct functions against tracers + +rmmod ftrace-direct ||: +if ! modprobe ftrace-direct ; then + echo "No ftrace-direct sample module - please make CONFIG_SAMPLE_FTRACE_DIRECT=m" + exit_unresolved; +fi + +echo "Let the module run a little" +sleep 1 + +grep -q "my_direct_func: waking up" trace + +rmmod ftrace-direct + +test_tracer() { + tracer=$1 + + # tracer -> direct -> no direct > no tracer + echo $tracer > current_tracer + modprobe ftrace-direct + rmmod ftrace-direct + echo nop > current_tracer + + # tracer -> direct -> no tracer > no direct + echo $tracer > current_tracer + modprobe ftrace-direct + echo nop > current_tracer + rmmod ftrace-direct + + # direct -> tracer -> no tracer > no direct + modprobe ftrace-direct + echo $tracer > current_tracer + echo nop > current_tracer + rmmod ftrace-direct + + # direct -> tracer -> no direct > no notracer + modprobe ftrace-direct + echo $tracer > current_tracer + rmmod ftrace-direct + echo nop > current_tracer +} + +for t in `cat available_tracers`; do + if [ "$t" != "nop" ]; then + test_tracer $t + fi +done + +echo nop > current_tracer +rmmod ftrace-direct ||: + +# Now do the same thing with another direct function registered +echo "Running with another ftrace direct function" + +rmmod ftrace-direct-too ||: +modprobe ftrace-direct-too + +for t in `cat available_tracers`; do + if [ "$t" != "nop" ]; then + test_tracer $t + fi +done + +echo nop > current_tracer +rmmod ftrace-direct ||: +rmmod ftrace-direct-too ||: diff --git a/tools/testing/selftests/ftrace/test.d/direct/kprobe-direct.tc b/tools/testing/selftests/ftrace/test.d/direct/kprobe-direct.tc new file mode 100644 index 000000000000..801ecb63e84c --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/direct/kprobe-direct.tc @@ -0,0 +1,84 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test ftrace direct functions against kprobes + +rmmod ftrace-direct ||: +if ! modprobe ftrace-direct ; then + echo "No ftrace-direct sample module - please build with CONFIG_SAMPLE_FTRACE_DIRECT=m" + exit_unresolved; +fi + +if [ ! -f kprobe_events ]; then + echo "No kprobe_events file -please build CONFIG_KPROBE_EVENTS" + exit_unresolved; +fi + +echo "Let the module run a little" +sleep 1 + +grep -q "my_direct_func: waking up" trace + +rmmod ftrace-direct + +echo 'p:kwake wake_up_process task=$arg1' > kprobe_events + +start_direct() { + echo > trace + modprobe ftrace-direct + sleep 1 + grep -q "my_direct_func: waking up" trace +} + +stop_direct() { + rmmod ftrace-direct +} + +enable_probe() { + echo > trace + echo 1 > events/kprobes/kwake/enable + sleep 1 + grep -q "kwake:" trace +} + +disable_probe() { + echo 0 > events/kprobes/kwake/enable +} + +test_kprobes() { + # probe -> direct -> no direct > no probe + enable_probe + start_direct + stop_direct + disable_probe + + # probe -> direct -> no probe > no direct + enable_probe + start_direct + disable_probe + stop_direct + + # direct -> probe -> no probe > no direct + start_direct + enable_probe + disable_probe + stop_direct + + # direct -> probe -> no direct > no noprobe + start_direct + enable_probe + stop_direct + disable_probe +} + +test_kprobes + +# Now do this with a second registered direct function +echo "Running with another ftrace direct function" + +modprobe ftrace-direct-too + +test_kprobes + +rmmod ftrace-direct-too + +echo > kprobe_events diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc index 27a54a17da65..f4e92afab14b 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc @@ -30,7 +30,7 @@ ftrace_filter_check '*schedule*' '^.*schedule.*$' ftrace_filter_check 'schedule*' '^schedule.*$' # filter by *mid*end -ftrace_filter_check '*aw*lock' '.*aw.*lock$' +ftrace_filter_check '*pin*lock' '.*pin.*lock$' # filter by start*mid* ftrace_filter_check 'mutex*try*' '^mutex.*try.*' diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-stacktrace.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-stacktrace.tc index 36fb59f886ea..1a52f2883fe0 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-stacktrace.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-stacktrace.tc @@ -3,6 +3,8 @@ # description: ftrace - stacktrace filter command # flags: instance +[ ! -f set_ftrace_filter ] && exit_unsupported + echo _do_fork:stacktrace >> set_ftrace_filter grep -q "_do_fork:stacktrace:unlimited" set_ftrace_filter diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc index 86a1f07ef2ca..71fa3f49e35e 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc @@ -15,6 +15,11 @@ if [ $NP -eq 1 ] ;then exit_unresolved fi +if ! grep -q "function" available_tracers ; then + echo "Function trace is not enabled" + exit_unsupported +fi + ORIG_CPUMASK=`cat tracing_cpumask` do_reset() { diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index 1d96c5f7e402..5d4550591ff9 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -46,6 +46,9 @@ reset_events_filter() { # reset all current setting filters } reset_ftrace_filter() { # reset all triggers in set_ftrace_filter + if [ ! -f set_ftrace_filter ]; then + return 0 + fi echo > set_ftrace_filter grep -v '^#' set_ftrace_filter | while read t; do tr=`echo $t | cut -d: -f2` @@ -93,7 +96,7 @@ initialize_ftrace() { # Reset ftrace to initial-state disable_events [ -f set_event_pid ] && echo > set_event_pid [ -f set_ftrace_pid ] && echo > set_ftrace_pid - [ -f set_ftrace_filter ] && echo | tee set_ftrace_* + [ -f set_ftrace_notrace ] && echo > set_ftrace_notrace [ -f set_graph_function ] && echo | tee set_graph_* [ -f stack_trace_filter ] && echo > stack_trace_filter [ -f kprobe_events ] && echo > kprobe_events @@ -115,7 +118,7 @@ ftrace_errlog_check() { # err-prefix command-with-error-pos-by-^ command-file command=$(echo "$2" | tr -d ^) echo "Test command: $command" echo > error_log - (! echo "$command" > "$3" ) 2> /dev/null + (! echo "$command" >> "$3" ) 2> /dev/null grep "$1: error:" -A 3 error_log N=$(tail -n 1 error_log | wc -c) # " Command: " and "^\n" => 13 diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc index 3fb70e01b1fe..3ff236719b6e 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc @@ -24,7 +24,21 @@ test -d events/kprobes2/event2 || exit_failure :;: "Add an event on dot function without name" ;: -FUNC=`grep -m 10 " [tT] .*\.isra\..*$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " "` +find_dot_func() { + if [ ! -f available_filter_functions ]; then + grep -m 10 " [tT] .*\.isra\..*$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " " + return; + fi + + grep " [tT] .*\.isra\..*" /proc/kallsyms | cut -f 3 -d " " | while read f; do + if grep -s $f available_filter_functions; then + echo $f + break + fi + done +} + +FUNC=`find_dot_func | tail -n 1` [ "x" != "x$FUNC" ] || exit_unresolved echo "p $FUNC" > kprobe_events EVENT=`grep $FUNC kprobe_events | cut -f 1 -d " " | cut -f 2 -d:` diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_multiprobe.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_multiprobe.tc new file mode 100644 index 000000000000..44494bac86d1 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_multiprobe.tc @@ -0,0 +1,35 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Create/delete multiprobe on kprobe event + +[ -f kprobe_events ] || exit_unsupported + +grep -q "Create/append/" README || exit_unsupported + +# Choose 2 symbols for target +SYM1=_do_fork +SYM2=do_exit +EVENT_NAME=kprobes/testevent + +DEF1="p:$EVENT_NAME $SYM1" +DEF2="p:$EVENT_NAME $SYM2" + +:;: "Define an event which has 2 probes" ;: +echo $DEF1 >> kprobe_events +echo $DEF2 >> kprobe_events +cat kprobe_events | grep "$DEF1" +cat kprobe_events | grep "$DEF2" + +:;: "Remove the event by name (should remove both)" ;: +echo "-:$EVENT_NAME" >> kprobe_events +test `cat kprobe_events | wc -l` -eq 0 + +:;: "Remove just 1 event" ;: +echo $DEF1 >> kprobe_events +echo $DEF2 >> kprobe_events +echo "-:$EVENT_NAME $SYM1" >> kprobe_events +! cat kprobe_events | grep "$DEF1" +cat kprobe_events | grep "$DEF2" + +:;: "Appending different type must fail" ;: +! echo "$DEF1 \$stack" >> kprobe_events diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc index 29faaec942c6..ef1e9bafb098 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc @@ -41,6 +41,11 @@ check_error 'p vfs_read ^%none_reg' # BAD_REG_NAME check_error 'p vfs_read ^@12345678abcde' # BAD_MEM_ADDR check_error 'p vfs_read ^@+10' # FILE_ON_KPROBE +grep -q "imm-value" README && \ +check_error 'p vfs_read arg1=\^x' # BAD_IMM +grep -q "imm-string" README && \ +check_error 'p vfs_read arg1=\"abcd^' # IMMSTR_NO_CLOSE + check_error 'p vfs_read ^+0@0)' # DEREF_NEED_BRACE check_error 'p vfs_read ^+0ab1(@0)' # BAD_DEREF_OFFS check_error 'p vfs_read +0(+0(@0^)' # DEREF_OPEN_BRACE @@ -82,4 +87,15 @@ case $(uname -m) in ;; esac +# multiprobe errors +if grep -q "Create/append/" README && grep -q "imm-value" README; then +echo 'p:kprobes/testevent _do_fork' > kprobe_events +check_error '^r:kprobes/testevent do_exit' # DIFF_PROBE_TYPE +echo 'p:kprobes/testevent _do_fork abcd=\1' > kprobe_events +check_error 'p:kprobes/testevent _do_fork ^bcd=\1' # DIFF_ARG_TYPE +check_error 'p:kprobes/testevent _do_fork ^abcd=\1:u8' # DIFF_ARG_TYPE +check_error 'p:kprobes/testevent _do_fork ^abcd=\"foo"' # DIFF_ARG_TYPE +check_error '^p:kprobes/testevent _do_fork abcd=\1' # SAME_PROBE +fi + exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc index 5862eee91e1d..6e3dbe5f96b7 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc @@ -20,9 +20,9 @@ while read i; do test $N -eq 256 && break done -L=`wc -l kprobe_events` -if [ $L -ne $N ]; then - echo "The number of kprobes events ($L) is not $N" +L=`cat kprobe_events | wc -l` +if [ $L -ne 256 ]; then + echo "The number of kprobes events ($L) is not 256" exit_fail fi diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-action-hist-xfail.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-action-hist-xfail.tc index 1221240f8cf6..3f2aee115f6e 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-action-hist-xfail.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-action-hist-xfail.tc @@ -21,10 +21,10 @@ grep -q "snapshot()" README || exit_unsupported # version issue echo "Test expected snapshot action failure" -echo 'hist:keys=comm:onmatch(sched.sched_wakeup).snapshot()' >> /sys/kernel/debug/tracing/events/sched/sched_waking/trigger && exit_fail +echo 'hist:keys=comm:onmatch(sched.sched_wakeup).snapshot()' >> events/sched/sched_waking/trigger && exit_fail echo "Test expected save action failure" -echo 'hist:keys=comm:onmatch(sched.sched_wakeup).save(comm,prio)' >> /sys/kernel/debug/tracing/events/sched/sched_waking/trigger && exit_fail +echo 'hist:keys=comm:onmatch(sched.sched_wakeup).save(comm,prio)' >> events/sched/sched_waking/trigger && exit_fail exit_xfail diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc index 064a284e4e75..c80007aa9f86 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc @@ -16,7 +16,7 @@ grep -q "onchange(var)" README || exit_unsupported # version issue echo "Test onchange action" -echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio) if comm=="ping"' >> /sys/kernel/debug/tracing/events/sched/sched_waking/trigger +echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio) if comm=="ping"' >> events/sched/sched_waking/trigger ping $LOCALHOST -c 3 nice -n 1 ping $LOCALHOST -c 3 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc index 18fff69fc433..f546c1b66a9b 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc @@ -23,9 +23,9 @@ grep -q "snapshot()" README || exit_unsupported # version issue echo "Test snapshot action" -echo 1 > /sys/kernel/debug/tracing/events/sched/enable +echo 1 > events/sched/enable -echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio):onchange($newprio).snapshot() if comm=="ping"' >> /sys/kernel/debug/tracing/events/sched/sched_waking/trigger +echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio):onchange($newprio).snapshot() if comm=="ping"' >> events/sched/sched_waking/trigger ping $LOCALHOST -c 3 nice -n 1 ping $LOCALHOST -c 3 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-syntax-errors.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-syntax-errors.tc new file mode 100644 index 000000000000..d44087a2f3d1 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-syntax-errors.tc @@ -0,0 +1,32 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event trigger - test histogram parser errors + +if [ ! -f set_event -o ! -d events/kmem ]; then + echo "event tracing is not supported" + exit_unsupported +fi + +if [ ! -f events/kmem/kmalloc/trigger ]; then + echo "event trigger is not supported" + exit_unsupported +fi + +if [ ! -f events/kmem/kmalloc/hist ]; then + echo "hist trigger is not supported" + exit_unsupported +fi + +[ -f error_log ] || exit_unsupported + +check_error() { # command-with-error-pos-by-^ + ftrace_errlog_check 'hist:kmem:kmalloc' "$1" 'events/kmem/kmalloc/trigger' +} + +check_error 'hist:keys=common_pid:vals=bytes_req:sort=common_pid,^junk' # INVALID_SORT_FIELD +check_error 'hist:keys=common_pid:vals=bytes_req:^sort=' # EMPTY_ASSIGNMENT +check_error 'hist:keys=common_pid:vals=bytes_req:^sort=common_pid,' # EMPTY_SORT_FIELD +check_error 'hist:keys=common_pid:vals=bytes_req:sort=common_pid.^junk' # INVALID_SORT_MODIFIER +check_error 'hist:keys=common_pid:vals=bytes_req,bytes_alloc:^sort=common_pid,bytes_req,bytes_alloc' # TOO_MANY_SORT_FIELDS + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc index 7717c0a09686..ac738500d17f 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc @@ -28,7 +28,7 @@ if [ -z "$FEATURE" ]; then exit_unsupported fi -echo "Test snapshot tigger" +echo "Test snapshot trigger" echo 0 > snapshot echo 1 > events/sched/sched_process_fork/enable ( echo "forked") |
