tests/regression/tools/live/test_lttng_kernel

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2013 Julien Desfossez <julien.desfossez@efficios.com>
   4 #                      David Goulet <dgoulet@efficios.com>
   5 #
   6 # This library is free software; you can redistribute it and/or modify it under
   7 # the terms of the GNU Lesser General Public License as published by the Free
   8 # Software Foundation; version 2.1 of the License.
   9 #
  10 # This library is distributed in the hope that it will be useful, but WITHOUT
  11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12 # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
  13 # details.
  14 #
  15 # You should have received a copy of the GNU Lesser General Public License
  16 # along with this library; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  18
  19 TEST_DESC="Live - Kernel space tracing"
  20
  21 CURDIR=$(dirname $0)/
  22 TESTDIR=$CURDIR/../../../
  23 DELAY_USEC=2000000
  24
  25 SESSION_NAME="live"
  26 EVENT_NAME="sched_switch"
  27
  28 TRACE_PATH=$(mktemp -d)
  29
  30 DIR=$(readlink -f $TESTDIR)
  31
  32 NUM_TESTS=10
  33
  34 source $TESTDIR/utils/utils.sh
  35
  36 # MUST set TESTDIR before calling those functions
  37 plan_tests $NUM_TESTS
  38
  39 print_test_banner "$TEST_DESC"
  40
  41 function setup_live_tracing()
  42 {
  43         # Create session with default path
  44         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create $SESSION_NAME --live $DELAY_USEC \
  45                 -U net://localhost >/dev/null 2>&1
  46         ok $? "Create session in live mode with delay $DELAY_USEC"
  47
  48         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  49         start_lttng_tracing_ok $SESSION_NAME
  50 }
  51
  52 function clean_live_tracing()
  53 {
  54         stop_lttng_tracing_ok $SESSION_NAME
  55         destroy_lttng_session_ok $SESSION_NAME
  56 }
  57
  58 # Need root access for kernel tracing.
  59 if [ "$(id -u)" == "0" ]; then
  60         isroot=1
  61 else
  62         isroot=0
  63 fi
  64
  65 skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
  66 {
  67         start_lttng_sessiond
  68         start_lttng_relayd "-o $TRACE_PATH"
  69
  70         setup_live_tracing
  71
  72         # Just hit some events
  73         sleep 2
  74
  75         clean_live_tracing
  76
  77         validate_trace $EVENT_NAME $TRACE_PATH
  78         rm -rf $TRACE_PATH
  79
  80         stop_lttng_relayd
  81         stop_lttng_sessiond
  82 }