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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347#!/bin/bash# perf_probe :: Add probes, list and remove them (exclusive)# SPDX-License-Identifier: GPL-2.0
## test_adding_kernel of perf_probe test# Author: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com># Author: Michael Petlan <mpetlan@redhat.com>## Description:## This test tests adding of probes, their correct listing# and removing.#
DIR_PATH="$(dirname $0)"TEST_RESULT=0
# include working environment. "$DIR_PATH/../common/init.sh"
# shellcheck source=lib/probe_vfs_getname.sh. "$DIR_PATH/../lib/probe_vfs_getname.sh"
TEST_PROBE=${TEST_PROBE:-"inode_permission"}
# set NO_DEBUGINFO to skip testcase if debuginfo is not present# skip_if_no_debuginfo returns 2 if debuginfo is not presentskip_if_no_debuginfoif [ $? -eq 2 ]; then NO_DEBUGINFO=1fi
check_kprobes_availableif [ $? -ne 0 ]; then print_overall_skipped exit 2fi
### basic probe adding
for opt in "" "-a" "--add"; do clear_all_probes $CMD_PERF probe $opt $TEST_PROBE 2> $LOGS_DIR/adding_kernel_add$opt.err PERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_patterns_found.pl" \ "Added new events?:" "probe:$TEST_PROBE" "on $TEST_PROBE" \ < $LOGS_DIR/adding_kernel_add$opt.err CHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "adding probe $TEST_PROBE :: $opt" (( TEST_RESULT += $? ))done
### listing added probe :: perf list
# any added probes should appear in perf-list output$CMD_PERF list probe:\* > $LOGS_DIR/adding_kernel_list.logPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_lines_matched.pl" \ "$RE_LINE_EMPTY" "List of pre-defined events" \ "probe:${TEST_PROBE}(?:_\d+)?\s+\[Tracepoint event\]" \ "Metric Groups:" < $LOGS_DIR/adding_kernel_list.logCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "listing added probe :: perf list"(( TEST_RESULT += $? ))
### listing added probe :: perf probe -l
# '-l' should list all the added probes as well$CMD_PERF probe -l > $LOGS_DIR/adding_kernel_list-l.logPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_patterns_found.pl" \ "\s*probe:${TEST_PROBE}(?:_\d+)?\s+\(on ${TEST_PROBE}(?:[:\+]$RE_NUMBER_HEX)?@.+\)" \ < $LOGS_DIR/adding_kernel_list-l.logCHECK_EXIT_CODE=$?
if [ $NO_DEBUGINFO ] ; then print_testcase_skipped $NO_DEBUGINFO $NO_DEBUGINFO "Skipped due to missing debuginfo"else print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "listing added probe :: perf probe -l"fi
(( TEST_RESULT += $? ))
### using added probe
$CMD_PERF stat -e probe:$TEST_PROBE\* -o $LOGS_DIR/adding_kernel_using_probe.log -- cat /proc/uptime > /dev/nullPERF_EXIT_CODE=$?
REGEX_STAT_HEADER="\s*Performance counter stats for \'cat /proc/uptime\':"REGEX_STAT_VALUES="\s*\d+\s+probe:$TEST_PROBE"# the value should be greater than 1REGEX_STAT_VALUE_NONZERO="\s*[1-9][0-9]*\s+probe:$TEST_PROBE"REGEX_STAT_TIME="\s*$RE_NUMBER\s+seconds (?:time elapsed|user|sys)""$DIR_PATH/../common/check_all_lines_matched.pl" \ "$REGEX_STAT_HEADER" "$REGEX_STAT_VALUES" "$REGEX_STAT_TIME" \ "$RE_LINE_COMMENT" "$RE_LINE_EMPTY" < $LOGS_DIR/adding_kernel_using_probe.logCHECK_EXIT_CODE=$?"$DIR_PATH/../common/check_all_patterns_found.pl" \ "$REGEX_STAT_HEADER" "$REGEX_STAT_VALUE_NONZERO" "$REGEX_STAT_TIME" \ < $LOGS_DIR/adding_kernel_using_probe.log(( CHECK_EXIT_CODE += $? ))
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "using added probe"(( TEST_RESULT += $? ))
### removing added probe
# '-d' should remove the probe$CMD_PERF probe -d $TEST_PROBE\* 2> $LOGS_DIR/adding_kernel_removing.errPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_lines_matched.pl" \ "Removed event: probe:$TEST_PROBE" < $LOGS_DIR/adding_kernel_removing.errCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "deleting added probe"(( TEST_RESULT += $? ))
### listing removed probe
# removed probes should NOT appear in perf-list output$CMD_PERF list probe:\* > $LOGS_DIR/adding_kernel_list_removed.logPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_lines_matched.pl" \ "$RE_LINE_EMPTY" "List of pre-defined events" "Metric Groups:" \ < $LOGS_DIR/adding_kernel_list_removed.logCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "listing removed probe (should NOT be listed)"(( TEST_RESULT += $? ))
### dry run
# the '-n' switch should run it in dry mode$CMD_PERF probe -n --add $TEST_PROBE 2> $LOGS_DIR/adding_kernel_dryrun.errPERF_EXIT_CODE=$?
# check for the output (should be the same as usual)"$DIR_PATH/../common/check_all_patterns_found.pl" \ "Added new events?:" "probe:$TEST_PROBE" "on $TEST_PROBE" \ < $LOGS_DIR/adding_kernel_dryrun.errCHECK_EXIT_CODE=$?
# check that no probe was added in real! ( $CMD_PERF probe -l | grep "probe:$TEST_PROBE" )(( CHECK_EXIT_CODE += $? ))
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "dry run :: adding probe"(( TEST_RESULT += $? ))
### force-adding probes
# when using '--force' a probe should be added even if it is already there$CMD_PERF probe --add $TEST_PROBE 2> $LOGS_DIR/adding_kernel_forceadd_01.errPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_patterns_found.pl" \ "Added new events?:" "probe:$TEST_PROBE" "on $TEST_PROBE" \ < $LOGS_DIR/adding_kernel_forceadd_01.errCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "force-adding probes :: first probe adding"(( TEST_RESULT += $? ))
# adding existing probe without '--force' should fail! $CMD_PERF probe --add $TEST_PROBE 2> $LOGS_DIR/adding_kernel_forceadd_02.errPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_patterns_found.pl" \ "Error: event \"$TEST_PROBE\" already exists." \ "Error: Failed to add events." < $LOGS_DIR/adding_kernel_forceadd_02.errCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "force-adding probes :: second probe adding (without force)"(( TEST_RESULT += $? ))
# adding existing probe with '--force' should passNO_OF_PROBES=`$CMD_PERF probe -l $TEST_PROBE| wc -l`$CMD_PERF probe --force --add $TEST_PROBE 2> $LOGS_DIR/adding_kernel_forceadd_03.errPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_patterns_found.pl" \ "Added new events?:" "probe:${TEST_PROBE}_${NO_OF_PROBES}" \ "on $TEST_PROBE" < $LOGS_DIR/adding_kernel_forceadd_03.errCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "force-adding probes :: second probe adding (with force)"(( TEST_RESULT += $? ))
### using doubled probe
# since they are the same, they should produce the same results$CMD_PERF stat -e probe:$TEST_PROBE -e probe:${TEST_PROBE}_${NO_OF_PROBES} -x';' -o $LOGS_DIR/adding_kernel_using_two.log -- bash -c 'cat /proc/cpuinfo > /dev/null'PERF_EXIT_CODE=$?
REGEX_LINE="$RE_NUMBER;+probe:${TEST_PROBE}_?(?:$NO_OF_PROBES)?;$RE_NUMBER;$RE_NUMBER""$DIR_PATH/../common/check_all_lines_matched.pl" \ "$REGEX_LINE" "$RE_LINE_EMPTY" "$RE_LINE_COMMENT" \ < $LOGS_DIR/adding_kernel_using_two.logCHECK_EXIT_CODE=$?
VALUE_1=`grep "$TEST_PROBE;" $LOGS_DIR/adding_kernel_using_two.log | awk -F';' '{print $1}'`VALUE_2=`grep "${TEST_PROBE}_${NO_OF_PROBES};" $LOGS_DIR/adding_kernel_using_two.log | awk -F';' '{print $1}'`
test $VALUE_1 -eq $VALUE_2(( CHECK_EXIT_CODE += $? ))
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "using doubled probe"
### removing multiple probes
# using wildcards should remove all matching probes$CMD_PERF probe --del \* 2> $LOGS_DIR/adding_kernel_removing_wildcard.errPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_lines_matched.pl" \ "Removed event: probe:$TEST_PROBE" \ "Removed event: probe:${TEST_PROBE}_1" < $LOGS_DIR/adding_kernel_removing_wildcard.errCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "removing multiple probes"(( TEST_RESULT += $? ))
### wildcard adding support
$CMD_PERF probe -nf --max-probes=512 -a 'vfs_* $params' 2> $LOGS_DIR/adding_kernel_adding_wildcard.errPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_patterns_found.pl" \ "probe:vfs_mknod" "probe:vfs_create" "probe:vfs_rmdir" \ "probe:vfs_link" "probe:vfs_write" < $LOGS_DIR/adding_kernel_adding_wildcard.errCHECK_EXIT_CODE=$?
if [ $NO_DEBUGINFO ] ; then print_testcase_skipped $NO_DEBUGINFO $NO_DEBUGINFO "Skipped due to missing debuginfo"else print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "wildcard adding support"fi
(( TEST_RESULT += $? ))
### non-existing variable
# perf probe should survive a non-existing variable probing attempt{ $CMD_PERF probe 'vfs_read somenonexistingrandomstuffwhichisalsoprettylongorevenlongertoexceed64' ; } 2> $LOGS_DIR/adding_kernel_nonexisting.errPERF_EXIT_CODE=$?
# the exitcode should not be 0 or segfaulttest $PERF_EXIT_CODE -ne 139 -a $PERF_EXIT_CODE -ne 0PERF_EXIT_CODE=$?
# check that the error message is reasonable"$DIR_PATH/../common/check_all_patterns_found.pl" \ "Failed to find" \ "somenonexistingrandomstuffwhichisalsoprettylongorevenlongertoexceed64" \ < $LOGS_DIR/adding_kernel_nonexisting.errCHECK_EXIT_CODE=$?"$DIR_PATH/../common/check_all_patterns_found.pl" \ "in this function|at this address" "Error" "Failed to add events" \ < $LOGS_DIR/adding_kernel_nonexisting.err(( CHECK_EXIT_CODE += $? ))"$DIR_PATH/../common/check_all_lines_matched.pl" \ "Failed to find" "Error" "Probe point .+ not found" "optimized out" \ "Use.+\-\-range option to show.+location range" \ < $LOGS_DIR/adding_kernel_nonexisting.err(( CHECK_EXIT_CODE += $? ))"$DIR_PATH/../common/check_no_patterns_found.pl" \ "$RE_SEGFAULT" < $LOGS_DIR/adding_kernel_nonexisting.err(( CHECK_EXIT_CODE += $? ))
if [ $NO_DEBUGINFO ]; then print_testcase_skipped $NO_DEBUGINFO $NO_DEBUGINFO "Skipped due to missing debuginfo"else print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "non-existing variable"fi
(( TEST_RESULT += $? ))
### function with return value
# adding probe with return value$CMD_PERF probe --add "$TEST_PROBE%return \$retval" 2> $LOGS_DIR/adding_kernel_func_retval_add.errPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_patterns_found.pl" \ "Added new events?:" "probe:$TEST_PROBE" \ "on $TEST_PROBE%return with \\\$retval" \ < $LOGS_DIR/adding_kernel_func_retval_add.errCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "function with retval :: add"(( TEST_RESULT += $? ))
# recording some data$CMD_PERF record -e probe:$TEST_PROBE\* -o $CURRENT_TEST_DIR/perf.data -- cat /proc/cpuinfo > /dev/null 2> $LOGS_DIR/adding_kernel_func_retval_record.errPERF_EXIT_CODE=$?
"$DIR_PATH/../common/check_all_patterns_found.pl" \ "$RE_LINE_RECORD1" "$RE_LINE_RECORD2" \ < $LOGS_DIR/adding_kernel_func_retval_record.errCHECK_EXIT_CODE=$?
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "function with retval :: record"(( TEST_RESULT += $? ))
# perf script should report the function calls with the correct arg values$CMD_PERF script -i $CURRENT_TEST_DIR/perf.data > $LOGS_DIR/adding_kernel_func_retval_script.logPERF_EXIT_CODE=$?
REGEX_SCRIPT_LINE="\s*cat\s+$RE_NUMBER\s+\[$RE_NUMBER\]\s+$RE_NUMBER:\s+probe:$TEST_PROBE\w*:\s+\($RE_NUMBER_HEX\s+<\-\s+$RE_NUMBER_HEX\)\s+arg1=$RE_NUMBER_HEX""$DIR_PATH/../common/check_all_lines_matched.pl" \ "$REGEX_SCRIPT_LINE" < $LOGS_DIR/adding_kernel_func_retval_script.logCHECK_EXIT_CODE=$?"$DIR_PATH/../common/check_all_patterns_found.pl" \ "$REGEX_SCRIPT_LINE" < $LOGS_DIR/adding_kernel_func_retval_script.log(( CHECK_EXIT_CODE += $? ))
print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "function argument probing :: script"(( TEST_RESULT += $? ))
clear_all_probes
# print overall resultsprint_overall_results "$TEST_RESULT"exit $?