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|
#!/bin/bash
#
# Copyright (C) 2016 Julien Desfossez <jdesfossez@efficios.com>
#
# SPDX-License-Identifier: GPL-2.0-only
#
TEST_DESC="Perf counters"
CURDIR=$(dirname $0)/
TESTDIR=$CURDIR/..
LTTNG_BIN="lttng"
SESSION_NAME="perf_counters"
NUM_TESTS=21
NR_ITER=1
NR_USEC_WAIT=1
TESTAPP_PATH="$TESTDIR/utils/testapp"
TESTAPP_NAME="gen-ust-events"
TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
# Empty if libpfm is installed, "#" otherwise
HAVE_LIBPFM="@LTTNG_TOOLS_BUILD_WITH_LIBPFM_TRUE@"
source $TESTDIR/utils/utils.sh
function enable_ust_lttng_event_per_chan()
{
sess_name="$1"
event_name="$2"
chan_name="$3"
$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -c $chan_name -u >/dev/null 2>&1
ok $? "Enable event $event_name for session $sess_name in channel $chan_name"
}
function have_libpfm()
{
test -z $HAVE_LIBPFM
ok $? "Have libpfm installed"
}
function test_ust_raw()
{
local SESSION_NAME="ust_perf"
local CHAN_NAME="mychan"
local EVENT_NAME="tp:tptest"
local PMU="UNHALTED_REFERENCE_CYCLES"
local tests_to_skip=9
local ret
local TRACE_PATH
# Find the raw perf id of the event.
PERFID=$("$CURDIR/find_event" "$PMU")
ret=$?
if [ "$ret" -eq "0" ]; then
pass "Find PMU $PMU"
elif [ "$ret" -eq "1" ]; then
skip 0 "PMU event not found." $tests_to_skip
return
elif [ "$ret" -eq "2" ]; then
skip 0 "PMU event not actionable." $tests_to_skip
return
else
fail "find_event returned $ret."
return
fi
TRACE_PATH=$(mktemp --tmpdir -d "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
create_lttng_session_ok $SESSION_NAME $TRACE_PATH
enable_ust_lttng_channel_ok $SESSION_NAME $CHAN_NAME
enable_ust_lttng_event_per_chan $SESSION_NAME $EVENT_NAME $CHAN_NAME
add_context_ust_ok $SESSION_NAME $CHAN_NAME "perf:thread:raw:${PERFID}:test"
start_lttng_tracing_ok
$TESTAPP_BIN -i $NR_ITER -w $NR_USEC_WAIT >/dev/null 2>&1
stop_lttng_tracing_ok
destroy_lttng_session_ok $SESSION_NAME
validate_trace "perf_thread_raw_${PERFID}_test" $TRACE_PATH
rm -rf $TRACE_PATH
}
function test_kernel_raw()
{
local SESSION_NAME="kernel_perf"
local CHAN_NAME="mychan"
local EVENT_NAME="lttng_test_filter_event"
local PMU="UNHALTED_REFERENCE_CYCLES"
local PERFID=""
local tests_to_skip=9
local ret
local TRACE_PATH
# Find the raw perf id of the event.
PERFID=$("$CURDIR/find_event" "$PMU")
ret=$?
if [ "$ret" -eq "0" ]; then
pass "Find PMU $PMU"
elif [ "$ret" -eq "1" ]; then
skip 0 "PMU event not found." $tests_to_skip
return
elif [ "$ret" -eq "2" ]; then
skip 0 "PMU event not actionable." $tests_to_skip
return
else
fail "find_event returned $ret."
return
fi
TRACE_PATH=$(mktemp --tmpdir -d "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
create_lttng_session_ok $SESSION_NAME $TRACE_PATH
lttng_enable_kernel_channel_ok $SESSION_NAME $CHAN_NAME
enable_kernel_lttng_event_ok $SESSION_NAME $EVENT_NAME $CHAN_NAME
add_context_kernel_ok $SESSION_NAME $CHAN_NAME "perf:cpu:raw:${PERFID}:test"
start_lttng_tracing_ok
echo -n 10 > /proc/lttng-test-filter-event
stop_lttng_tracing_ok
destroy_lttng_session_ok $SESSION_NAME
validate_trace "perf_cpu_raw_${PERFID}_test" $TRACE_PATH
rm -rf $TRACE_PATH
}
if [ "$(id -u)" == "0" ]; then
isroot=1
else
isroot=0
fi
# MUST set TESTDIR before calling those functions
plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
start_lttng_sessiond
have_libpfm
test_ust_raw
skip $isroot "Root access is needed for kernel testing, skipping." 9 ||
{
modprobe lttng-test
test_kernel_raw
modprobe --remove lttng-test
}
stop_lttng_sessiond
|
