tests/regression/tools/live/test_lttng_kernel

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2013 Julien Desfossez <julien.desfossez@efficios.com>
   4 # Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
   5 #
   6 # SPDX-License-Identifier: LGPL-2.1-only
   7
   8 TEST_DESC="Live - Kernel space tracing"
   9
  10 CURDIR=$(dirname $0)/
  11 TESTDIR=$CURDIR/../../../
  12 DELAY_USEC=2000000
  13
  14 SESSION_NAME="live"
  15 EVENT_NAME="lttng_test_filter_event"
  16
  17 TRACE_PATH=$(mktemp -d)
  18
  19 DIR=$(readlink -f $TESTDIR)
  20
  21 NUM_TESTS=10
  22
  23 source $TESTDIR/utils/utils.sh
  24
  25 # MUST set TESTDIR before calling those functions
  26 plan_tests $NUM_TESTS
  27
  28 print_test_banner "$TEST_DESC"
  29
  30 function setup_live_tracing()
  31 {
  32         # Create session with default path
  33         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create $SESSION_NAME --live $DELAY_USEC \
  34                 -U net://localhost >/dev/null 2>&1
  35         ok $? "Create session in live mode with delay $DELAY_USEC"
  36
  37         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  38         start_lttng_tracing_ok $SESSION_NAME
  39 }
  40
  41 function clean_live_tracing()
  42 {
  43         stop_lttng_tracing_ok $SESSION_NAME
  44         destroy_lttng_session_ok $SESSION_NAME
  45 }
  46
  47 # Need root access for kernel tracing.
  48 if [ "$(id -u)" == "0" ]; then
  49         isroot=1
  50 else
  51         isroot=0
  52 fi
  53
  54 skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
  55 {
  56         modprobe lttng-test
  57
  58         start_lttng_sessiond
  59         start_lttng_relayd "-o $TRACE_PATH"
  60
  61         setup_live_tracing
  62
  63         echo -n "1" > /proc/lttng-test-filter-event
  64
  65         clean_live_tracing
  66
  67         validate_trace $EVENT_NAME $TRACE_PATH
  68         rm -rf $TRACE_PATH
  69
  70         stop_lttng_relayd
  71         stop_lttng_sessiond
  72
  73         modprobe --remove lttng-test
  74 }