tests/regression/tools/live/test_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 NR_ITER=1
  13 NR_USEC_WAIT=1
  14 DELAY_USEC=2000000
  15
  16 SESSION_NAME="live"
  17 EVENT_NAME="lttng_test_filter_event"
  18
  19 TRACE_PATH=$(mktemp --tmpdir -d tmp.test_live_kernel_trace_path.XXXXXX)
  20
  21 DIR=$(readlink -f $TESTDIR)
  22
  23 source $TESTDIR/utils/utils.sh
  24
  25 function setup_live_tracing()
  26 {
  27         # Create session with default path
  28         $TESTDIR/../src/bin/lttng/$LTTNG_BIN create $SESSION_NAME --live $DELAY_USEC \
  29                 -U net://localhost >/dev/null 2>&1
  30
  31         $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$EVENT_NAME" -s $SESSION_NAME -k >/dev/null 2>&1
  32         $TESTDIR/../src/bin/lttng/$LTTNG_BIN start $SESSION_NAME >/dev/null 2>&1
  33 }
  34
  35 function clean_live_tracing()
  36 {
  37         $TESTDIR/../src/bin/lttng/$LTTNG_BIN stop $SESSION_NAME >/dev/null 2>&1
  38         $TESTDIR/../src/bin/lttng/$LTTNG_BIN destroy $SESSION_NAME >/dev/null 2>&1
  39         rm -rf $TRACE_PATH
  40 }
  41
  42 # Need root access for kernel tracing.
  43 if [ "$(id -u)" == "0" ]; then
  44         isroot=1
  45 else
  46         plan_skip_all "Root access is needed. Skipping all tests."
  47         exit 0
  48 fi
  49
  50 modprobe lttng-test
  51
  52 start_lttng_sessiond_notap
  53 start_lttng_relayd_notap "-o $TRACE_PATH"
  54
  55 setup_live_tracing
  56
  57 echo -n "1" > /proc/lttng-test-filter-event
  58
  59 # Start the live test
  60 $TESTDIR/regression/tools/live/live_test
  61
  62 clean_live_tracing
  63
  64 stop_lttng_relayd_notap
  65 stop_lttng_sessiond_notap
  66
  67 modprobe --remove lttng-test