tests/regression/tools/regen-metadata/test_kernel

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2015 Julien Desfossez <jdesfossez@efficios.com>
   4 #
   5 # SPDX-License-Identifier: LGPL-2.1-only
   6
   7 TEST_DESC="Streaming - Kernel tracing"
   8
   9 CURDIR=$(dirname $0)/
  10 TESTDIR=$CURDIR/../../..
  11 EVENT_NAME="lttng_test_filter_event"
  12 SESSION_NAME=""
  13
  14 TRACE_PATH=$(mktemp --tmpdir -d tmp.test_regen_metadata_kernel_trace_path.XXXXXX)
  15
  16 NUM_TESTS=24
  17
  18 source $TESTDIR/utils/utils.sh
  19
  20 function test_kernel_streaming ()
  21 {
  22         local metadata_path
  23
  24         diag "Test kernel streaming with metadata regeneration"
  25         create_lttng_session_uri $SESSION_NAME net://localhost
  26         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  27         start_lttng_tracing_ok $SESSION_NAME
  28         echo -n "100" > /proc/lttng-test-filter-event
  29
  30         # Baseline
  31         stop_lttng_tracing_ok $SESSION_NAME
  32         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*
  33
  34         # Find the metadata file
  35         metadata_path=$(find "$TRACE_PATH/$HOSTNAME/$SESSION_NAME"* -name "metadata")
  36
  37         # Empty the metadata file
  38         echo -n > "$metadata_path"
  39
  40         start_lttng_tracing_ok $SESSION_NAME
  41         regenerate_metadata_ok $SESSION_NAME
  42         stop_lttng_tracing_ok $SESSION_NAME
  43         # Validate test
  44         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*
  45         destroy_lttng_session_ok $SESSION_NAME
  46         rm -rf "$TRACE_PATH"
  47 }
  48
  49 function test_kernel_local ()
  50 {
  51         local metadata_path
  52
  53         diag "Test kernel local with metadata regeneration"
  54         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  55         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  56         start_lttng_tracing_ok $SESSION_NAME
  57
  58         # Baseline
  59         echo -n "100" > /proc/lttng-test-filter-event
  60         stop_lttng_tracing_ok $SESSION_NAME
  61         validate_trace $EVENT_NAME "$TRACE_PATH"
  62
  63         # Find the metadata file
  64         metadata_path=$(find "$TRACE_PATH"* -name "metadata")
  65
  66         # Empty the metadata file
  67         echo -n > "$metadata_path"
  68
  69         start_lttng_tracing_ok $SESSION_NAME
  70         regenerate_metadata_ok $SESSION_NAME
  71         stop_lttng_tracing_ok $SESSION_NAME
  72
  73         validate_trace $EVENT_NAME $TRACE_PATH
  74         destroy_lttng_session_ok $SESSION_NAME
  75
  76         rm -rf "$TRACE_PATH"
  77 }
  78
  79 plan_tests $NUM_TESTS
  80
  81 print_test_banner "$TEST_DESC"
  82
  83 if [ "$(id -u)" == "0" ]; then
  84         isroot=1
  85 else
  86         isroot=0
  87 fi
  88
  89 skip $isroot "Root access is needed. Skipping all kernel streaming tests." $NUM_TESTS ||
  90 {
  91         validate_lttng_modules_present
  92
  93         start_lttng_relayd "-o $TRACE_PATH"
  94         start_lttng_sessiond
  95         modprobe lttng-test
  96
  97         tests=( test_kernel_streaming test_kernel_local )
  98
  99         for fct_test in ${tests[@]};
 100         do
 101                 SESSION_NAME=$(randstring 16 0)
 102                 ${fct_test}
 103         done
 104
 105         modprobe --remove lttng-test
 106         stop_lttng_sessiond
 107         stop_lttng_relayd
 108 }