diff options
Diffstat (limited to 'tools/testing/selftests/ftrace')
13 files changed, 299 insertions, 5 deletions
diff --git a/tools/testing/selftests/ftrace/.gitignore b/tools/testing/selftests/ftrace/.gitignore index 2659417cb2c7..4d7fcb828850 100644 --- a/tools/testing/selftests/ftrace/.gitignore +++ b/tools/testing/selftests/ftrace/.gitignore @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only logs +poll diff --git a/tools/testing/selftests/ftrace/Makefile b/tools/testing/selftests/ftrace/Makefile index 49d96bb16355..7c12263f8260 100644 --- a/tools/testing/selftests/ftrace/Makefile +++ b/tools/testing/selftests/ftrace/Makefile @@ -6,6 +6,6 @@ TEST_PROGS := ftracetest-ktap TEST_FILES := test.d settings EXTRA_CLEAN := $(OUTPUT)/logs/* -TEST_GEN_PROGS = poll +TEST_GEN_FILES := poll include ../lib.mk diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc index 155792eaeee5..f271c4238b72 100644 --- a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc @@ -6,6 +6,7 @@ echo 0 > events/enable echo > dynamic_events +SUBSYSTEM=kmem TRACEPOINT1=kmem_cache_alloc TRACEPOINT2=kmem_cache_free @@ -24,4 +25,17 @@ grep -q myevent1 dynamic_events echo > dynamic_events +# auto naming check +echo "t $TRACEPOINT1" >> dynamic_events + +test -d events/tracepoints/$TRACEPOINT1 + +echo > dynamic_events + +# SUBSYSTEM is not supported +echo "t $SUBSYSTEM/$TRACEPOINT1" >> dynamic_events && exit_fail ||: +echo "t $SUBSYSTEM:$TRACEPOINT1" >> dynamic_events && exit_fail ||: +echo "t:myevent3 $SUBSYSTEM/$TRACEPOINT1" >> dynamic_events && exit_fail ||: +echo "t:myevent3 $SUBSYSTEM:$TRACEPOINT1" >> dynamic_events && exit_fail ||: + clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_uprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_uprobe.tc index 86c76679c56e..f2048c244526 100644 --- a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_uprobe.tc +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_uprobe.tc @@ -3,14 +3,18 @@ # description: Generic dynamic event - add/remove/test uprobe events # requires: uprobe_events +if ! which readelf > /dev/null 2>&1 ; then + echo "No readelf found. skipped." + exit_unresolved +fi + echo 0 > events/enable echo > dynamic_events REALBIN=`readlink -f /bin/sh` +ENTRYPOINT=`readelf -h ${REALBIN} | grep Entry | sed -e 's/[^0]*//'` -echo 'cat /proc/$$/maps' | /bin/sh | \ - grep "r-xp .*${REALBIN}$" | \ - awk '{printf "p:myevent %s:0x%s\n", $6,$3 }' >> uprobe_events +echo "p:myevent ${REALBIN}:${ENTRYPOINT}" >> uprobe_events grep -q myevent uprobe_events test -d events/uprobes/myevent diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/dynevent_limitations.tc b/tools/testing/selftests/ftrace/test.d/dynevent/dynevent_limitations.tc new file mode 100644 index 000000000000..f656bccb1a14 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/dynevent_limitations.tc @@ -0,0 +1,63 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Checking dynamic events limitations +# requires: dynamic_events "imm-value":README + +# Max arguments limitation +MAX_ARGS=128 +EXCEED_ARGS=$((MAX_ARGS + 1)) + +# bash and dash evaluate variables differently. +# dash will evaluate '\\' every time it is read whereas bash does not. +# +# TEST_STRING="$TEST_STRING \\$i" +# echo $TEST_STRING +# +# With i=123 +# On bash, that will print "\123" +# but on dash, that will print the escape sequence of \123 as the \ will +# be interpreted again in the echo. +# +# Set a variable "bs" to save a double backslash, then echo that +# to "ts" to see if $ts changed or not. If it changed, it's dash, +# if not, it's bash, and then bs can equal a single backslash. +bs='\\' +ts=`echo $bs` +if [ "$ts" = '\\' ]; then + # this is bash + bs='\' +fi + +check_max_args() { # event_header + TEST_STRING=$1 + # Acceptable + for i in `seq 1 $MAX_ARGS`; do + TEST_STRING="$TEST_STRING $bs$i" + done + echo "$TEST_STRING" >> dynamic_events + echo > dynamic_events + # Error + TEST_STRING="$TEST_STRING \\$EXCEED_ARGS" + ! echo "$TEST_STRING" >> dynamic_events + return 0 +} + +# Kprobe max args limitation +if grep -q "kprobe_events" README; then + check_max_args "p vfs_read" +fi + +# Fprobe max args limitation +if grep -q "f[:[<group>/][<event>]] <func-name>[%return] [<args>]" README; then + check_max_args "f vfs_read" +fi + +# Tprobe max args limitation +if grep -q "t[:[<group>/][<event>]] <tracepoint> [<args>]" README; then + check_max_args "t kfree" +fi + +# Uprobe max args limitation +if grep -q "uprobe_events" README; then + check_max_args "p /bin/sh:10" +fi 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 c9425a34fae3..fee479295e2f 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 @@ -27,6 +27,7 @@ check_error 'f:^foo.1/bar vfs_read' # BAD_GROUP_NAME check_error 'f:^ vfs_read' # NO_EVENT_NAME check_error 'f:foo/^12345678901234567890123456789012345678901234567890123456789012345 vfs_read' # EVENT_TOO_LONG check_error 'f:foo/^bar.1 vfs_read' # BAD_EVENT_NAME +check_error 't kmem^/kfree' # BAD_TP_NAME check_error 'f vfs_read ^$stack10000' # BAD_STACK_NUM diff --git a/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc b/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc index 118247b8dd84..c62165fabd0c 100644 --- a/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc +++ b/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc @@ -80,6 +80,26 @@ if [ $misscnt -gt 0 ]; then exit_fail fi +# Check strings too +if [ -f events/syscalls/sys_enter_openat/filter ]; then + DIRNAME=`basename $TMPDIR` + echo "filename.ustring ~ \"*$DIRNAME*\"" > events/syscalls/sys_enter_openat/filter + echo 1 > events/syscalls/sys_enter_openat/enable + echo 1 > tracing_on + ls /bin/sh + nocnt=`grep openat trace | wc -l` + ls $TMPDIR + echo 0 > tracing_on + hitcnt=`grep openat trace | wc -l`; + echo 0 > events/syscalls/sys_enter_openat/enable + if [ $nocnt -gt 0 ]; then + exit_fail + fi + if [ $hitcnt -eq 0 ]; then + exit_fail + fi +fi + reset_events_filter exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-multi-filter.tc b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-multi-filter.tc new file mode 100644 index 000000000000..b6d6a312ead5 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-multi-filter.tc @@ -0,0 +1,177 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: ftrace - function graph filters +# requires: set_ftrace_filter function_graph:tracer + +# Make sure that function graph filtering works + +INSTANCE1="instances/test1_$$" +INSTANCE2="instances/test2_$$" + +WD=`pwd` + +do_reset() { + cd $WD + if [ -d $INSTANCE1 ]; then + echo nop > $INSTANCE1/current_tracer + rmdir $INSTANCE1 + fi + if [ -d $INSTANCE2 ]; then + echo nop > $INSTANCE2/current_tracer + rmdir $INSTANCE2 + fi +} + +mkdir $INSTANCE1 +if ! grep -q function_graph $INSTANCE1/available_tracers; then + echo "function_graph not allowed with instances" + rmdir $INSTANCE1 + exit_unsupported +fi + +mkdir $INSTANCE2 + +fail() { # msg + do_reset + echo $1 + exit_fail +} + +disable_tracing +clear_trace + +function_count() { + search=$1 + vsearch=$2 + + if [ -z "$search" ]; then + cat enabled_functions | wc -l + elif [ -z "$vsearch" ]; then + grep $search enabled_functions | wc -l + else + grep $search enabled_functions | grep $vsearch| wc -l + fi +} + +set_fgraph() { + instance=$1 + filter="$2" + notrace="$3" + + echo "$filter" > $instance/set_ftrace_filter + echo "$notrace" > $instance/set_ftrace_notrace + echo function_graph > $instance/current_tracer +} + +check_functions() { + orig_cnt=$1 + test=$2 + + cnt=`function_count $test` + if [ $cnt -gt $orig_cnt ]; then + fail + fi +} + +check_cnt() { + orig_cnt=$1 + search=$2 + vsearch=$3 + + cnt=`function_count $search $vsearch` + if [ $cnt -gt $orig_cnt ]; then + fail + fi +} + +reset_graph() { + instance=$1 + echo nop > $instance/current_tracer +} + +# get any functions that were enabled before the test +total_cnt=`function_count` +sched_cnt=`function_count sched` +lock_cnt=`function_count lock` +time_cnt=`function_count time` +clock_cnt=`function_count clock` +locks_clock_cnt=`function_count locks clock` +clock_locks_cnt=`function_count clock locks` + +# Trace functions with "sched" but not "time" +set_fgraph $INSTANCE1 '*sched*' '*time*' + +# Make sure "time" isn't listed +check_functions $time_cnt 'time' +instance1_cnt=`function_count` + +# Trace functions with "lock" but not "clock" +set_fgraph $INSTANCE2 '*lock*' '*clock*' +instance1_2_cnt=`function_count` + +# Turn off the first instance +reset_graph $INSTANCE1 + +# The second instance doesn't trace "clock" functions +check_functions $clock_cnt 'clock' +instance2_cnt=`function_count` + +# Start from a clean slate +reset_graph $INSTANCE2 +check_functions $total_cnt + +# Trace functions with "lock" but not "clock" +set_fgraph $INSTANCE2 '*lock*' '*clock*' + +# This should match the last time instance 2 was by itself +cnt=`function_count` +if [ $instance2_cnt -ne $cnt ]; then + fail +fi + +# And it should not be tracing "clock" functions +check_functions $clock_cnt 'clock' + +# Trace functions with "sched" but not "time" +set_fgraph $INSTANCE1 '*sched*' '*time*' + +# This should match the last time both instances were enabled +cnt=`function_count` +if [ $instance1_2_cnt -ne $cnt ]; then + fail +fi + +# Turn off the second instance +reset_graph $INSTANCE2 + +# This should match the last time instance 1 was by itself +cnt=`function_count` +if [ $instance1_cnt -ne $cnt ]; then + fail +fi + +# And it should not be tracing "time" functions +check_functions $time_cnt 'time' + +# Start from a clean slate +reset_graph $INSTANCE1 +check_functions $total_cnt + +# Enable all functions but those that have "locks" +set_fgraph $INSTANCE1 '' '*locks*' + +# Enable all functions but those that have "clock" +set_fgraph $INSTANCE2 '' '*clock*' + +# If a function has "locks" it should not have "clock" +check_cnt $locks_clock_cnt locks clock + +# If a function has "clock" it should not have "locks" +check_cnt $clock_locks_cnt clock locks + +reset_graph $INSTANCE1 +reset_graph $INSTANCE2 + +do_reset + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index 84d6a9c7ad67..a1052bf460fc 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -156,7 +156,13 @@ check_requires() { # Check required files and tracers exit_unsupported fi elif [ "$r" != "$i" ]; then - if ! grep -Fq "$r" README ; then + # If this is an instance, check the top directory + if echo $TRACING_DIR | grep -q "/instances/"; then + test="$TRACING_DIR/../.." + else + test=$TRACING_DIR + fi + if ! grep -Fq "$r" $test/README ; then echo "Required feature pattern \"$r\" is not in README." exit_unsupported 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 1590d6bfb857..20a35fea13f8 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 @@ -2,6 +2,7 @@ # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger expected fail actions # requires: set_event snapshot "snapshot()":README +# flags: instance fail() { #msg echo $1 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 91339c130832..55ab0270e5f7 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 @@ -2,6 +2,7 @@ # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger onchange action # requires: set_event "onchange(var)":README ping:program +# flags: instance fail() { #msg echo $1 @@ -19,4 +20,6 @@ if ! grep -q "changed:" events/sched/sched_waking/hist; then fail "Failed to create onchange action inter-event histogram" fi +echo '!hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio) if comm=="ping"' >> events/sched/sched_waking/trigger + exit 0 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 147967e86584..9eb37c2fa417 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 @@ -2,6 +2,7 @@ # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger snapshot action # requires: set_event snapshot events/sched/sched_process_fork/hist "onchange(var)":README "snapshot()":README ping:program +# flags: instance fail() { #msg echo $1 @@ -27,4 +28,6 @@ if ! grep -q "comm=ping" snapshot; then fail "Failed to create snapshot action inter-event histogram" fi +echo '!hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio):onchange($newprio).snapshot() if comm=="ping"' >> events/sched/sched_waking/trigger + exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-expressions.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-expressions.tc index 05ffba299dbf..0ebda2068a00 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-expressions.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-expressions.tc @@ -2,6 +2,7 @@ # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test histogram expression parsing # requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist error_log "<var1>=<field|var_ref|numeric_literal>":README +# flags: instance fail() { #msg |