[lttng-dev] [PATCH lttng-tools] Test lttng-modules clock override plugin
Jérémie Galarneau
jeremie.galarneau at efficios.com
Sat May 14 20:56:44 UTC 2016
Merged in master and stable-2.8. I have added the test to the
root_regression test suite.
Thanks!
Jérémie
On Wed, May 11, 2016 at 1:15 PM, Mathieu Desnoyers
<mathieu.desnoyers at efficios.com> wrote:
> [ For both master and stable-2.8 branches. ]
>
> Fixes: #939
>
> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
> ---
> tests/regression/kernel/Makefile.am | 2 +-
> tests/regression/kernel/test_clock_override | 209 ++++++++++++++++++++++++++++
> 2 files changed, 210 insertions(+), 1 deletion(-)
> create mode 100755 tests/regression/kernel/test_clock_override
>
> diff --git a/tests/regression/kernel/Makefile.am b/tests/regression/kernel/Makefile.am
> index 36ff6ee..ca73ed4 100644
> --- a/tests/regression/kernel/Makefile.am
> +++ b/tests/regression/kernel/Makefile.am
> @@ -1,4 +1,4 @@
> -EXTRA_DIST = test_event_basic test_all_events test_syscall
> +EXTRA_DIST = test_event_basic test_all_events test_syscall test_clock_override
>
> all-local:
> @if [ x"$(srcdir)" != x"$(builddir)" ]; then \
> diff --git a/tests/regression/kernel/test_clock_override b/tests/regression/kernel/test_clock_override
> new file mode 100755
> index 0000000..c52ddf1
> --- /dev/null
> +++ b/tests/regression/kernel/test_clock_override
> @@ -0,0 +1,209 @@
> +#!/bin/bash
> +#
> +# Copyright (C) - 2013 Christian Babeux <christian.babeux at efficios.com>
> +# Copyright (C) - 2014, 2016 Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
> +#
> +# This program is free software; you can redistribute it and/or modify it
> +# under the terms of the GNU General Public License, version 2 only, as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it will be useful, but WITHOUT
> +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> +# more details.
> +#
> +# You should have received a copy of the GNU General Public License along with
> +# this program; if not, write to the Free Software Foundation, Inc., 51
> +# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> +
> +TEST_DESC="Kernel tracer - Clock override plugin"
> +
> +CURDIR=$(dirname $0)/
> +TESTDIR=$CURDIR/../..
> +SESSION_NAME="clock_override"
> +
> +NUM_TESTS=30
> +EVENT_NAME="lttng_test_filter_event"
> +
> +TESTCMD="echo -n 10 > /proc/lttng-test-filter-event"
> +
> +METADATA_CLOCK_START_TOKEN="clock {"
> +METADATA_CLOCK_END_TOKEN="};"
> +
> +METADATA_TOKEN_LIST=(
> + "name"
> + "uuid"
> + "description"
> + "freq"
> +)
> +
> +CLOCK_TOKEN_VALUE=(
> + "lttng_test_clock_override"
> + "83c63deb-7aa4-48fb-abda-946f400d76e6"
> + "Freeze time with 1KHz for regression test"
> + "1000"
> +)
> +
> +source $TESTDIR/utils/utils.sh
> +
> +function signal_cleanup()
> +{
> + diag "*** Exiting ***"
> + rmmod lttng-test
> + stop_lttng_sessiond
> + rmmod lttng-clock-plugin-test
> + rmmod lttng-clock
> + exit 1
> +}
> +
> +function extract_clock_metadata()
> +{
> + local metadata_file=$1
> + local clock_metadata_file_destination=$2
> + cat $metadata_file \
> + | sed -n "/$METADATA_CLOCK_START_TOKEN/,/$METADATA_CLOCK_END_TOKEN/p" \
> + > $clock_metadata_file_destination
> + ok $? "Clock metadata extraction"
> +}
> +
> +function extract_clock_metadata_token()
> +{
> + local clock_metadata_file=$1
> + local token=$2
> + # Look for token and get value between ""
> + cat $clock_metadata_file | grep $token | awk -F"= |;" '{print $2}' | tr -d '"'
> +}
> +
> +function test_clock_override_metadata()
> +{
> + local ctf_metadata_file=$(mktemp -p $TRACE_PATH ctf-metadata.XXXXX)
> + local clock_metadata_file=$(mktemp -p $TRACE_PATH clock-metadata.XXXXX)
> + local result=""
> +
> + diag "Clock override plugin metadata test"
> +
> + modprobe lttng-clock-plugin-test
> + start_lttng_sessiond
> + modprobe lttng-test
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> + enable_kernel_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
> + start_lttng_tracing_ok $SESSION_NAME
> + eval ${TESTCMD}
> + stop_lttng_tracing_ok $SESSION_NAME
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + rmmod lttng-test
> + stop_lttng_sessiond
> + rmmod lttng-clock-plugin-test
> + rmmod lttng-clock
> +
> + $BABELTRACE_BIN -o ctf-metadata -w $ctf_metadata_file $TRACE_PATH
> + ok $? "Metadata extraction from babeltrace"
> +
> + extract_clock_metadata $ctf_metadata_file $clock_metadata_file
> +
> + test ${#METADATA_TOKEN_LIST[@]} -eq ${#CLOCK_TOKEN_VALUE[@]}
> + ok $? "Tokens to check(${#METADATA_TOKEN_LIST[@]}) and provided values(${#CLOCK_TOKEN_VALUE[@]}) count is equal"
> +
> + local counter=0
> + while [ "$counter" -lt "${#METADATA_TOKEN_LIST[@]}" ]; do
> + result=$(extract_clock_metadata_token $clock_metadata_file \
> + ${METADATA_TOKEN_LIST[$counter]})
> + test "$result" == "${CLOCK_TOKEN_VALUE[$counter]}"
> + ok $? "Token \"${METADATA_TOKEN_LIST[$counter]}\" expect:${CLOCK_TOKEN_VALUE[$counter]} got:$result"
> + let "counter++"
> + done
> + rm -rf $ctf_metadata_file
> + rm -rf $clock_metadata_file
> +}
> +
> +function test_clock_override_timestamp()
> +{
> + diag "Clock override test"
> +
> + # Test without the plugin
> + diag "Plugin disabled"
> +
> + start_lttng_sessiond
> + modprobe lttng-test
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> + enable_kernel_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
> + start_lttng_tracing_ok $SESSION_NAME
> + eval ${TESTCMD}
> + stop_lttng_tracing_ok $SESSION_NAME
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + # Use Babeltrace with "-n all" to give a comma separated list for
> + # easy extraction of timestamps.
> + unique_timestamps_count=$($BABELTRACE_BIN -n all $TRACE_PATH | \
> + cut -d, -f1 | uniq | wc -l)
> + test $unique_timestamps_count -gt 1
> + ok $? "Unique event timestamps without clock override: $unique_timestamps_count expect >1"
> + rmmod lttng-test
> + stop_lttng_sessiond
> +
> + # Test with clock override plugin.
> + diag "Plugin enabled"
> +
> + modprobe lttng-clock-plugin-test
> + start_lttng_sessiond
> + modprobe lttng-test
> +
> + start_lttng_sessiond
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> + enable_kernel_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
> + start_lttng_tracing_ok $SESSION_NAME
> + eval ${TESTCMD}
> + stop_lttng_tracing_ok $SESSION_NAME
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + rmmod lttng-test
> + stop_lttng_sessiond
> + rmmod lttng-clock-plugin-test
> + rmmod lttng-clock
> +
> + # Use Babeltrace with "-n all" to give a comma separated list for
> + # easy extraction of timestamps.
> + unique_timestamps_count=$($BABELTRACE_BIN -n all $TRACE_PATH | \
> + cut -d, -f1 | uniq | wc -l)
> + test $unique_timestamps_count -eq 1
> + ok $? "Unique event timestamps with clock override: $unique_timestamps_count expect 1"
> +}
> +
> +# MUST set TESTDIR before calling those functions
> +plan_tests $NUM_TESTS
> +
> +print_test_banner "$TEST_DESC"
> +
> +TESTS=(
> + "test_clock_override_metadata"
> + "test_clock_override_timestamp"
> +)
> +
> +TEST_COUNT=${#TESTS[@]}
> +i=0
> +
> +if [ "$(id -u)" == "0" ]; then
> + isroot=1
> +else
> + isroot=0
> +fi
> +
> +skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
> +{
> + trap signal_cleanup SIGTERM SIGINT
> +
> + while [ "$i" -lt "$TEST_COUNT" ]; do
> +
> + TRACE_PATH=$(mktemp -d)
> +
> + # Execute test
> + ${TESTS[$i]}
> +
> + rm -rf $TRACE_PATH
> +
> + let "i++"
> + done
> +}
> --
> 2.1.4
>
--
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com
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