tests/regression/kernel/test_channel

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2018 Francis Deslauriers <francis.deslauriers@efficios.com>
   4 #
   5 # This program is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License, version 2 only, as
   7 # published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 # more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along with
  15 # this program; if not, write to the Free Software Foundation, Inc., 51
  16 # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 TEST_DESC="Kernel tracer - Channel configuration"
  19
  20 CURDIR=$(dirname $0)/
  21 TESTDIR=$CURDIR/../..
  22 NUM_TESTS=8
  23
  24 source $TESTDIR/utils/utils.sh
  25
  26 function test_channel_buffer()
  27 {
  28         TRACE_PATH=$(mktemp -d)
  29         SESSION_NAME="test_session_name"
  30         CHANNEL_NAME="test_channel_name"
  31         create_lttng_session_ok "$SESSION_NAME" "$TRACE_PATH"
  32
  33         # Try to create a tiny buffer.
  34         lttng_enable_kernel_channel_ok "$SESSION_NAME" "$CHANNEL_NAME" --subbuf-size=4k --num-subbuf=1
  35
  36         destroy_lttng_session_ok "$SESSION_NAME"
  37
  38         rm -rf "$TRACE_PATH"
  39 }
  40
  41 function test_channel_buffer_too_large()
  42 {
  43         TRACE_PATH=$(mktemp -d)
  44         SESSION_NAME="test_session_name"
  45         CHANNEL_NAME="test_channel_name"
  46         create_lttng_session_ok "$SESSION_NAME" "$TRACE_PATH"
  47
  48         # Try to create a buffer larger than memory. This testcase will need to
  49         # be adjusted if someone has a computer with 1024*1000 GB of ram.
  50         lttng_enable_kernel_channel_fail "$SESSION_NAME" "$CHANNEL_NAME" --subbuf-size=1000G --num-subbuf=1024
  51
  52         destroy_lttng_session_ok "$SESSION_NAME"
  53
  54         rm -rf "$TRACE_PATH"
  55 }
  56
  57 plan_tests $NUM_TESTS
  58 print_test_banner "$TEST_DESC"
  59
  60 if [ "$(id -u)" == "0" ]; then
  61         isroot=1
  62 else
  63         isroot=0
  64 fi
  65
  66 skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
  67 {
  68         start_lttng_sessiond
  69
  70         test_channel_buffer
  71         test_channel_buffer_too_large
  72
  73         stop_lttng_sessiond
  74 }