diff options
Diffstat (limited to 'tools/perf/tests/shell/lock_contention.sh')
| -rwxr-xr-x | tools/perf/tests/shell/lock_contention.sh | 227 |
1 files changed, 191 insertions, 36 deletions
diff --git a/tools/perf/tests/shell/lock_contention.sh b/tools/perf/tests/shell/lock_contention.sh index b05f1b1ca6c8..6dd90519f45c 100755 --- a/tools/perf/tests/shell/lock_contention.sh +++ b/tools/perf/tests/shell/lock_contention.sh @@ -1,4 +1,4 @@ -#!/bin/sh +#!/bin/bash # kernel lock contention analysis test # SPDX-License-Identifier: GPL-2.0 @@ -7,41 +7,54 @@ set -e err=0 perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) result=$(mktemp /tmp/__perf_test.result.XXXXX) +errout=$(mktemp /tmp/__perf_test.errout.XXXXX) cleanup() { rm -f ${perfdata} rm -f ${result} - trap - exit term int + rm -f ${errout} + trap - EXIT TERM INT ERR } trap_cleanup() { + if (( $? == 139 )); then #SIGSEGV + err=1 + fi + echo "Unexpected signal in ${FUNCNAME[1]}" cleanup exit ${err} } -trap trap_cleanup exit term int +trap trap_cleanup EXIT TERM INT ERR check() { - if [ `id -u` != 0 ]; then + if [ "$(id -u)" != 0 ]; then echo "[Skip] No root permission" err=2 exit fi - if ! perf list | grep -q lock:contention_begin; then + if ! perf list tracepoint | grep -q lock:contention_begin; then echo "[Skip] No lock contention tracepoints" err=2 exit fi + + # shellcheck disable=SC2046 + if [ `nproc` -lt 4 ]; then + echo "[Skip] Low number of CPUs (`nproc`), lock event cannot be triggered certainly" + err=2 + exit + fi } test_record() { echo "Testing perf lock record and perf lock contention" - perf lock record -o ${perfdata} -- perf bench sched messaging > /dev/null 2>&1 + perf lock record -o ${perfdata} -- perf bench sched messaging -p > /dev/null 2>&1 # the output goes to the stderr and we expect only 1 output (-E 1) perf lock contention -i ${perfdata} -E 1 -q 2> ${result} - if [ $(cat "${result}" | wc -l) != "1" ]; then - echo "[Fail] Recorded result count is not 1:" $(cat "${result}" | wc -l) + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] Recorded result count is not 1:" "$(cat "${result}" | wc -l)" err=1 exit fi @@ -57,9 +70,9 @@ test_bpf() fi # the perf lock contention output goes to the stderr - perf lock con -a -b -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result} - if [ $(cat "${result}" | wc -l) != "1" ]; then - echo "[Fail] BPF result count is not 1:" $(cat "${result}" | wc -l) + perf lock con -a -b -E 1 -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] BPF result count is not 1:" "$(cat "${result}" | wc -l)" err=1 exit fi @@ -68,10 +81,12 @@ test_bpf() test_record_concurrent() { echo "Testing perf lock record and perf lock contention at the same time" - perf lock record -o- -- perf bench sched messaging 2> /dev/null | \ + perf lock record -o- -- perf bench sched messaging -p 2> ${errout} | \ perf lock contention -i- -E 1 -q 2> ${result} - if [ $(cat "${result}" | wc -l) != "1" ]; then - echo "[Fail] Recorded result count is not 1:" $(cat "${result}" | wc -l) + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] Recorded result count is not 1:" "$(cat "${result}" | wc -l)" + cat ${errout} + cat ${result} err=1 exit fi @@ -81,8 +96,8 @@ test_aggr_task() { echo "Testing perf lock contention --threads" perf lock contention -i ${perfdata} -t -E 1 -q 2> ${result} - if [ $(cat "${result}" | wc -l) != "1" ]; then - echo "[Fail] Recorded result count is not 1:" $(cat "${result}" | wc -l) + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] Recorded result count is not 1:" "$(cat "${result}" | wc -l)" err=1 exit fi @@ -92,9 +107,9 @@ test_aggr_task() fi # the perf lock contention output goes to the stderr - perf lock con -a -b -t -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result} - if [ $(cat "${result}" | wc -l) != "1" ]; then - echo "[Fail] BPF result count is not 1:" $(cat "${result}" | wc -l) + perf lock con -a -b -t -E 1 -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] BPF result count is not 1:" "$(cat "${result}" | wc -l)" err=1 exit fi @@ -104,20 +119,38 @@ test_aggr_addr() { echo "Testing perf lock contention --lock-addr" perf lock contention -i ${perfdata} -l -E 1 -q 2> ${result} - if [ $(cat "${result}" | wc -l) != "1" ]; then - echo "[Fail] Recorded result count is not 1:" $(cat "${result}" | wc -l) + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] Recorded result count is not 1:" "$(cat "${result}" | wc -l)" + err=1 + exit + fi + + if ! perf lock con -b true > /dev/null 2>&1 ; then + return + fi + + # the perf lock contention output goes to the stderr + perf lock con -a -b -l -E 1 -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] BPF result count is not 1:" "$(cat "${result}" | wc -l)" err=1 exit fi +} + +test_aggr_cgroup() +{ + echo "Testing perf lock contention --lock-cgroup" if ! perf lock con -b true > /dev/null 2>&1 ; then + echo "[Skip] No BPF support" return fi # the perf lock contention output goes to the stderr - perf lock con -a -b -l -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result} - if [ $(cat "${result}" | wc -l) != "1" ]; then - echo "[Fail] BPF result count is not 1:" $(cat "${result}" | wc -l) + perf lock con -a -b --lock-cgroup -E 1 -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] BPF result count is not 1:" "$(cat "${result}" | wc -l)" err=1 exit fi @@ -127,8 +160,8 @@ test_type_filter() { echo "Testing perf lock contention --type-filter (w/ spinlock)" perf lock contention -i ${perfdata} -Y spinlock -q 2> ${result} - if [ $(grep -c -v spinlock "${result}") != "0" ]; then - echo "[Fail] Recorded should not have non-spinlocks:" $(cat "${result}") + if [ "$(grep -c -v spinlock "${result}")" != "0" ]; then + echo "[Fail] Recorded result should not have non-spinlocks:" "$(cat "${result}")" err=1 exit fi @@ -137,9 +170,9 @@ test_type_filter() return fi - perf lock con -a -b -Y spinlock -q -- perf bench sched messaging > /dev/null 2> ${result} - if [ $(grep -c -v spinlock "${result}") != "0" ]; then - echo "[Fail] Recorded should not have non-spinlocks:" $(cat "${result}") + perf lock con -a -b -Y spinlock -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(grep -c -v spinlock "${result}")" != "0" ]; then + echo "[Fail] BPF result should not have non-spinlocks:" "$(cat "${result}")" err=1 exit fi @@ -149,7 +182,7 @@ test_lock_filter() { echo "Testing perf lock contention --lock-filter (w/ tasklist_lock)" perf lock contention -i ${perfdata} -l -q 2> ${result} - if [ $(grep -c tasklist_lock "${result}") != "1" ]; then + if [ "$(grep -c tasklist_lock "${result}")" != "1" ]; then echo "[Skip] Could not find 'tasklist_lock'" return fi @@ -157,21 +190,137 @@ test_lock_filter() perf lock contention -i ${perfdata} -L tasklist_lock -q 2> ${result} # find out the type of tasklist_lock - local type=$(head -1 "${result}" | awk '{ print $8 }' | sed -e 's/:.*//') + test_lock_filter_type=$(head -1 "${result}" | awk '{ print $8 }' | sed -e 's/:.*//') + + if [ "$(grep -c -v "${test_lock_filter_type}" "${result}")" != "0" ]; then + echo "[Fail] Recorded result should not have non-${test_lock_filter_type} locks:" "$(cat "${result}")" + err=1 + exit + fi + + if ! perf lock con -b true > /dev/null 2>&1 ; then + return + fi + + perf lock con -a -b -L tasklist_lock -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(grep -c -v "${test_lock_filter_type}" "${result}")" != "0" ]; then + echo "[Fail] BPF result should not have non-${test_lock_filter_type} locks:" "$(cat "${result}")" + err=1 + exit + fi +} + +test_stack_filter() +{ + echo "Testing perf lock contention --callstack-filter (w/ unix_stream)" + perf lock contention -i ${perfdata} -v -q 2> ${result} + if [ "$(grep -c unix_stream "${result}")" = "0" ]; then + echo "[Skip] Could not find 'unix_stream'" + return + fi + + perf lock contention -i ${perfdata} -E 1 -S unix_stream -q 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] Recorded result should have a lock from unix_stream:" "$(cat "${result}")" + err=1 + exit + fi + + if ! perf lock con -b true > /dev/null 2>&1 ; then + return + fi - if [ $(grep -c -v "${type}" "${result}") != "0" ]; then - echo "[Fail] Recorded should not have non-${type} locks:" $(cat "${result}") + perf lock con -a -b -S unix_stream -E 1 -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] BPF result should have a lock from unix_stream:" "$(cat "${result}")" + err=1 + exit + fi +} + +test_aggr_task_stack_filter() +{ + echo "Testing perf lock contention --callstack-filter with task aggregation" + perf lock contention -i ${perfdata} -v -q 2> ${result} + if [ "$(grep -c unix_stream "${result}")" = "0" ]; then + echo "[Skip] Could not find 'unix_stream'" + return + fi + + perf lock contention -i ${perfdata} -t -E 1 -S unix_stream -q 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] Recorded result should have a task from unix_stream:" "$(cat "${result}")" + err=1 + exit + fi + + if ! perf lock con -b true > /dev/null 2>&1 ; then + return + fi + + perf lock con -a -b -t -S unix_stream -E 1 -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] BPF result should have a task from unix_stream:" "$(cat "${result}")" + err=1 + exit + fi +} +test_cgroup_filter() +{ + echo "Testing perf lock contention --cgroup-filter" + + if ! perf lock con -b true > /dev/null 2>&1 ; then + echo "[Skip] No BPF support" + return + fi + + perf lock con -a -b --lock-cgroup -E 1 -F wait_total -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] BPF result should have a cgroup result:" "$(cat "${result}")" + err=1 + exit + fi + + cgroup=$(cat "${result}" | awk '{ print $3 }') + perf lock con -a -b --lock-cgroup -E 1 -G "${cgroup}" -q -- perf bench sched messaging -p > /dev/null 2> ${result} + if [ "$(cat "${result}" | wc -l)" != "1" ]; then + echo "[Fail] BPF result should have a result with cgroup filter:" "$(cat "${cgroup}")" + err=1 + exit + fi +} + + +test_csv_output() +{ + echo "Testing perf lock contention CSV output" + perf lock contention -i ${perfdata} -E 1 -x , --output ${result} + # count the number of commas in the header + # it should have 5: contended, total-wait, max-wait, avg-wait, type, caller + header=$(grep "# output:" ${result} | tr -d -c , | wc -c) + if [ "${header}" != "5" ]; then + echo "[Fail] Recorded result does not have enough output columns: ${header} != 5" + err=1 + exit + fi + # count the number of commas in the output + output=$(grep -v "^#" ${result} | tr -d -c , | wc -c) + if [ "${header}" != "${output}" ]; then + echo "[Fail] Recorded result does not match the number of commas: ${header} != ${output}" err=1 exit fi if ! perf lock con -b true > /dev/null 2>&1 ; then + echo "[Skip] No BPF support" return fi - perf lock con -a -b -L tasklist_lock -q -- perf bench sched messaging > /dev/null 2> ${result} - if [ $(grep -c -v "${type}" "${result}") != "0" ]; then - echo "[Fail] Recorded should not have non-${type} locks:" $(cat "${result}") + # the perf lock contention output goes to the stderr + perf lock con -a -b -E 1 -x , --output ${result} -- perf bench sched messaging -p > /dev/null 2>&1 + output=$(grep -v "^#" ${result} | tr -d -c , | wc -c) + if [ "${header}" != "${output}" ]; then + echo "[Fail] BPF result does not match the number of commas: ${header} != ${output}" err=1 exit fi @@ -184,7 +333,13 @@ test_bpf test_record_concurrent test_aggr_task test_aggr_addr +test_aggr_cgroup test_type_filter test_lock_filter +test_stack_filter +test_aggr_task_stack_filter +test_cgroup_filter +test_csv_output +cleanup exit ${err} |