| 1 | #!/bin/bash |
| 2 | # |
| 3 | # Copyright (C) - 2012 David Goulet <dgoulet@efficios.com> |
| 4 | # |
| 5 | # This library is free software; you can redistribute it and/or modify it under |
| 6 | # the terms of the GNU Lesser General Public License as published by the Free |
| 7 | # Software Foundation; version 2.1 of the License. |
| 8 | # |
| 9 | # This library is distributed in the hope that it will be useful, but WITHOUT |
| 10 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| 11 | # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
| 12 | # details. |
| 13 | # |
| 14 | # You should have received a copy of the GNU Lesser General Public License |
| 15 | # along with this library; if not, write to the Free Software Foundation, Inc., |
| 16 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | TEST_DESC="Streaming - Kernel tracing" |
| 18 | |
| 19 | CURDIR=$(dirname $0)/ |
| 20 | TESTDIR=$CURDIR/../../.. |
| 21 | EVENT_NAME="sched_switch" |
| 22 | PID_RELAYD=0 |
| 23 | SESSION_NAME="" |
| 24 | |
| 25 | TRACE_PATH=$(mktemp -d) |
| 26 | |
| 27 | NUM_TESTS=10 |
| 28 | |
| 29 | source $TESTDIR/utils/utils.sh |
| 30 | |
| 31 | # LTTng kernel modules check |
| 32 | out=`ls /lib/modules/$(uname -r)/extra | grep lttng` |
| 33 | if [ -z "$out" ]; then |
| 34 | BAIL_OUT "LTTng modules not detected." |
| 35 | fi |
| 36 | |
| 37 | function lttng_create_session_uri |
| 38 | { |
| 39 | # Create session with default path |
| 40 | $TESTDIR/../src/bin/lttng/$LTTNG_BIN create $SESSION_NAME -U net://localhost >/dev/null 2>&1 |
| 41 | |
| 42 | ok $? "Create session $SESSION_NAME" |
| 43 | } |
| 44 | |
| 45 | function test_kernel_before_start () |
| 46 | { |
| 47 | diag "Test kernel streaming with event enable BEFORE start" |
| 48 | lttng_create_session_uri |
| 49 | lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME |
| 50 | start_lttng_tracing $SESSION_NAME |
| 51 | # Give a second |
| 52 | sleep 1 |
| 53 | stop_lttng_tracing $SESSION_NAME |
| 54 | destroy_lttng_session $SESSION_NAME |
| 55 | |
| 56 | # We can not predict _yet_ when the trace is available so we have to do a |
| 57 | # arbitratry sleep to validate the trace. |
| 58 | diag "Wait 3 seconds for the trace to be written on disk" |
| 59 | for i in `seq 1 3`; do |
| 60 | sleep 1 |
| 61 | done |
| 62 | } |
| 63 | |
| 64 | # Deactivated since this feature is not yet available where we can enable |
| 65 | # an event AFTERE tracing has started. |
| 66 | function test_kernel_after_start () |
| 67 | { |
| 68 | diag "Test kernel streaming with event enable AFTER start" |
| 69 | lttng_create_session_uri |
| 70 | start_lttng_tracing $SESSION_NAME |
| 71 | lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME |
| 72 | # Give a second |
| 73 | sleep 1 |
| 74 | stop_lttng_tracing $SESSION_NAME |
| 75 | destroy_lttng_session $SESSION_NAME |
| 76 | } |
| 77 | |
| 78 | plan_tests $NUM_TESTS |
| 79 | |
| 80 | print_test_banner "$TEST_DESC" |
| 81 | |
| 82 | if [ "$(id -u)" == "0" ]; then |
| 83 | isroot=1 |
| 84 | else |
| 85 | isroot=0 |
| 86 | fi |
| 87 | |
| 88 | skip $isroot "Root access is needed. Skipping all kernel streaming tests." $NUM_TESTS || |
| 89 | { |
| 90 | start_lttng_relayd "-o $TRACE_PATH" |
| 91 | start_lttng_sessiond |
| 92 | |
| 93 | tests=( test_kernel_before_start ) |
| 94 | |
| 95 | for fct_test in ${tests[@]}; |
| 96 | do |
| 97 | SESSION_NAME=$(randstring 16 0) |
| 98 | ${fct_test} |
| 99 | |
| 100 | # Validate test |
| 101 | validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME* |
| 102 | if [ $? -eq 0 ]; then |
| 103 | # Only delete if successful |
| 104 | rm -rf $TRACE_PATH |
| 105 | else |
| 106 | break |
| 107 | fi |
| 108 | done |
| 109 | |
| 110 | stop_lttng_sessiond |
| 111 | stop_lttng_relayd |
| 112 | } |