tests/regression/tools/streaming/test_kernel

   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 }