tests/regression/kernel/test_kernel_function

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2021 Francis Deslauriers <francis.deslauriers@efficios.com>
   4 #
   5 # SPDX-License-Identifier: GPL-2.0-only
   6 #
   7
   8 TEST_DESC="Kernel tracer - function event"
   9
  10 CURDIR=$(dirname $0)/
  11 TESTDIR=$CURDIR/../..
  12 NUM_TESTS=7
  13
  14 source $TESTDIR/utils/utils.sh
  15
  16 function test_kernel_function_basic()
  17 {
  18         local TRACE_PATH=$(mktemp --tmpdir -d "tmp.${FUNCNAME[0]}_trace_path.XXXXXX")
  19         local SESSION_NAME="kernel_function_basic"
  20         local EVENT_NAME="my_event_name"
  21         local TARGET_SYMBOL="lttng_test_filter_event_write"
  22
  23         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  24
  25         lttng_enable_kernel_function_event_ok $SESSION_NAME "$TARGET_SYMBOL" "$EVENT_NAME"
  26
  27         start_lttng_tracing_ok
  28
  29         echo 1 > /proc/lttng-test-filter-event
  30
  31         stop_lttng_tracing_ok
  32
  33         validate_trace "${EVENT_NAME}_entry" $TRACE_PATH
  34         validate_trace "${EVENT_NAME}_exit" $TRACE_PATH
  35
  36         destroy_lttng_session_ok $SESSION_NAME
  37
  38         rm -rf $TRACE_PATH
  39 }
  40
  41 # MUST set TESTDIR before calling those functions
  42 plan_tests $NUM_TESTS
  43
  44 print_test_banner "$TEST_DESC"
  45
  46 if [ "$(id -u)" == "0" ]; then
  47         isroot=1
  48 else
  49         isroot=0
  50 fi
  51
  52 skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
  53 {
  54         start_lttng_sessiond_notap
  55         validate_lttng_modules_present
  56         modprobe lttng-test
  57
  58         test_kernel_function_basic
  59
  60         modprobe --remove lttng-test
  61         stop_lttng_sessiond_notap
  62 }