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 SESSIOND_BIN="lttng-sessiond"
  24 RELAYD_BIN="lttng-relayd"
  25 LTTNG_BIN="lttng"
  26 DELAY_USEC=2000000
  27
  28 SESSION_NAME="live"
  29 EVENT_NAME="sched_switch"
  30
  31 TRACE_PATH=$(mktemp -d)
  32
  33 DIR=$(readlink -f $TESTDIR)
  34
  35 NUM_TESTS=10
  36
  37 source $TESTDIR/utils/utils.sh
  38
  39 # MUST set TESTDIR before calling those functions
  40 plan_tests $NUM_TESTS
  41
  42 print_test_banner "$TEST_DESC"
  43
  44 function setup_live_tracing()
  45 {
  46         # Create session with default path
  47         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create $SESSION_NAME --live $DELAY_USEC \
  48                 -U net://localhost >/dev/null 2>&1
  49         ok $? "Create session in live mode with delay $DELAY_USEC"
  50
  51         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  52         start_lttng_tracing $SESSION_NAME
  53 }
  54
  55 function clean_live_tracing()
  56 {
  57         stop_lttng_tracing $SESSION_NAME
  58         destroy_lttng_session $SESSION_NAME
  59 }
  60
  61 # Need root access for kernel tracing.
  62 if [ "$(id -u)" == "0" ]; then
  63         isroot=1
  64 else
  65         isroot=0
  66 fi
  67
  68 skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
  69 {
  70         start_lttng_sessiond
  71         start_lttng_relayd "-o $TRACE_PATH"
  72
  73         setup_live_tracing
  74
  75         # Just hit some events
  76         sleep 2
  77
  78         clean_live_tracing
  79
  80         validate_trace $EVENT_NAME $TRACE_PATH
  81         rm -rf $TRACE_PATH
  82
  83         stop_lttng_relayd
  84         stop_lttng_sessiond
  85 }