tests/regression/kernel/test_event_basic

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2013 Christian Babeux <christian.babeux@efficios.com>
   4 #
   5 # SPDX-License-Identifier: GPL-2.0-only
   6 #
   7
   8 TEST_DESC="Kernel tracer - Basic event"
   9
  10 CURDIR=$(dirname $0)/
  11 TESTDIR=$CURDIR/../..
  12 NUM_TESTS=21
  13
  14 TESTCMD="/bin/true"
  15
  16 source $TESTDIR/utils/utils.sh
  17
  18 function test_event_basic()
  19 {
  20         TRACE_PATH=$(mktemp --tmpdir -d "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
  21         SESSION_NAME="kernel_event_basic"
  22
  23         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  24
  25         lttng_enable_kernel_event $SESSION_NAME "sched_switch"
  26         lttng_enable_kernel_event $SESSION_NAME "sched_process_exit"
  27         lttng_enable_kernel_event $SESSION_NAME "sched_process_fork"
  28
  29         start_lttng_tracing_ok
  30
  31         # Running a process and waiting for its completion forces the triggering of
  32         # fork, sched_switch and exit events
  33         eval ${TESTCMD}
  34         stop_lttng_tracing_ok
  35
  36         validate_trace_path_kernel "$TRACE_PATH" ""
  37         validate_trace "sched_switch" $TRACE_PATH
  38         validate_trace "sched_process_exit" $TRACE_PATH
  39         validate_trace "sched_process_fork" $TRACE_PATH
  40
  41         destroy_lttng_session_ok $SESSION_NAME
  42
  43         rm -rf $TRACE_PATH
  44 }
  45
  46 function test_enable_after_start()
  47 {
  48         TRACE_PATH=$(mktemp --tmpdir -d "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
  49         SESSION_NAME="kernel_enable_after_start"
  50
  51         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  52
  53         lttng_enable_kernel_event $SESSION_NAME "sched_switch"
  54
  55         start_lttng_tracing_ok
  56         lttng_enable_kernel_event $SESSION_NAME "sched_process_exit"
  57
  58         # Running a process and waiting for its completion forces the triggering of
  59         # sched_switch and exit events
  60         eval ${TESTCMD}
  61         stop_lttng_tracing_ok
  62
  63         validate_trace "sched_switch" $TRACE_PATH
  64         validate_trace "sched_process_exit" $TRACE_PATH
  65
  66         destroy_lttng_session_ok $SESSION_NAME
  67
  68         rm -rf $TRACE_PATH
  69 }
  70
  71 # MUST set TESTDIR before calling those functions
  72 plan_tests $NUM_TESTS
  73
  74 print_test_banner "$TEST_DESC"
  75
  76 if [ "$(id -u)" == "0" ]; then
  77         isroot=1
  78 else
  79         isroot=0
  80 fi
  81
  82 skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
  83 {
  84         validate_lttng_modules_present
  85         start_lttng_sessiond
  86
  87         test_event_basic
  88         test_enable_after_start
  89
  90         stop_lttng_sessiond
  91 }