tests/perf/test_perf_raw.in

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2016 Julien Desfossez <jdesfossez@efficios.com>
   4 #
   5 # SPDX-License-Identifier: GPL-2.0-only
   6 #
   7
   8 TEST_DESC="Perf counters"
   9
  10 CURDIR=$(dirname $0)/
  11 TESTDIR=$CURDIR/..
  12 LTTNG_BIN="lttng"
  13 SESSION_NAME="perf_counters"
  14 NUM_TESTS=21
  15 NR_ITER=1
  16 NR_USEC_WAIT=1
  17 TESTAPP_PATH="$TESTDIR/utils/testapp"
  18 TESTAPP_NAME="gen-ust-events"
  19 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  20 # Empty if libpfm is installed, "#" otherwise
  21 HAVE_LIBPFM="@LTTNG_TOOLS_BUILD_WITH_LIBPFM_TRUE@"
  22
  23 source $TESTDIR/utils/utils.sh
  24
  25 function enable_ust_lttng_event_per_chan()
  26 {
  27         sess_name="$1"
  28         event_name="$2"
  29         chan_name="$3"
  30
  31         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -c $chan_name -u >/dev/null 2>&1
  32         ok $? "Enable event $event_name for session $sess_name in channel $chan_name"
  33 }
  34
  35 function have_libpfm()
  36 {
  37         test -z $HAVE_LIBPFM
  38         ok $? "Have libpfm installed"
  39 }
  40
  41 function test_ust_raw()
  42 {
  43         local SESSION_NAME="ust_perf"
  44         local CHAN_NAME="mychan"
  45         local EVENT_NAME="tp:tptest"
  46         local PMU="UNHALTED_REFERENCE_CYCLES"
  47         local tests_to_skip=9
  48         local ret
  49         local TRACE_PATH
  50
  51         # Find the raw perf id of the event.
  52         PERFID=$("$CURDIR/find_event" "$PMU")
  53         ret=$?
  54         if [ "$ret" -eq "0" ]; then
  55                 pass "Find PMU $PMU"
  56         elif [ "$ret" -eq "1" ]; then
  57                 skip 0 "PMU event not found." $tests_to_skip
  58                 return
  59         elif [ "$ret" -eq "2" ]; then
  60                 skip 0 "PMU event not actionable." $tests_to_skip
  61                 return
  62         else
  63                 fail "find_event returned $ret."
  64                 return
  65         fi
  66
  67         TRACE_PATH=$(mktemp --tmpdir -d "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
  68
  69         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  70
  71         enable_ust_lttng_channel_ok $SESSION_NAME $CHAN_NAME
  72
  73         enable_ust_lttng_event_per_chan $SESSION_NAME $EVENT_NAME $CHAN_NAME
  74
  75         add_context_ust_ok $SESSION_NAME $CHAN_NAME "perf:thread:raw:${PERFID}:test"
  76
  77         start_lttng_tracing_ok
  78
  79         $TESTAPP_BIN -i $NR_ITER -w $NR_USEC_WAIT >/dev/null 2>&1
  80
  81         stop_lttng_tracing_ok
  82
  83         destroy_lttng_session_ok $SESSION_NAME
  84
  85         validate_trace "perf_thread_raw_${PERFID}_test" $TRACE_PATH
  86
  87         rm -rf $TRACE_PATH
  88 }
  89
  90 function test_kernel_raw()
  91 {
  92         local SESSION_NAME="kernel_perf"
  93         local CHAN_NAME="mychan"
  94         local EVENT_NAME="lttng_test_filter_event"
  95         local PMU="UNHALTED_REFERENCE_CYCLES"
  96         local PERFID=""
  97         local tests_to_skip=9
  98         local ret
  99         local TRACE_PATH
 100
 101         # Find the raw perf id of the event.
 102         PERFID=$("$CURDIR/find_event" "$PMU")
 103         ret=$?
 104         if [ "$ret" -eq "0" ]; then
 105                 pass "Find PMU $PMU"
 106         elif [ "$ret" -eq "1" ]; then
 107                 skip 0 "PMU event not found." $tests_to_skip
 108                 return
 109         elif [ "$ret" -eq "2" ]; then
 110                 skip 0 "PMU event not actionable." $tests_to_skip
 111                 return
 112         else
 113                 fail "find_event returned $ret."
 114                 return
 115         fi
 116
 117         TRACE_PATH=$(mktemp --tmpdir -d "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
 118
 119         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
 120
 121         lttng_enable_kernel_channel_ok $SESSION_NAME $CHAN_NAME
 122
 123         enable_kernel_lttng_event_ok $SESSION_NAME $EVENT_NAME $CHAN_NAME
 124
 125         add_context_kernel_ok $SESSION_NAME $CHAN_NAME "perf:cpu:raw:${PERFID}:test"
 126
 127         start_lttng_tracing_ok
 128
 129         echo -n 10 > /proc/lttng-test-filter-event
 130
 131         stop_lttng_tracing_ok
 132
 133         destroy_lttng_session_ok $SESSION_NAME
 134
 135         validate_trace "perf_cpu_raw_${PERFID}_test" $TRACE_PATH
 136
 137         rm -rf $TRACE_PATH
 138 }
 139
 140 if [ "$(id -u)" == "0" ]; then
 141         isroot=1
 142 else
 143         isroot=0
 144 fi
 145
 146 # MUST set TESTDIR before calling those functions
 147 plan_tests $NUM_TESTS
 148
 149 print_test_banner "$TEST_DESC"
 150
 151 start_lttng_sessiond
 152
 153 have_libpfm
 154
 155 test_ust_raw
 156
 157 skip $isroot "Root access is needed for kernel testing, skipping." 9 ||
 158 {
 159         modprobe lttng-test
 160         test_kernel_raw
 161         modprobe --remove lttng-test
 162 }
 163
 164 stop_lttng_sessiond