lttctl/ltt-disarmall.sh

   1 # Copyright (C) 2009 Benjamin Poirier
   2 # Copyright (C) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13
  14 # You should have received a copy of the GNU General Public License along
  15 # with this program; if not, write to the Free Software Foundation, Inc.,
  16 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 DEBUGFSROOT=$(awk '{if ($3 == "debugfs") print $2}' /proc/mounts | head -n 1)
  19 MARKERSROOT=${DEBUGFSROOT}/ltt/markers
  20 DEFAULTMODULES="ltt-trace-control ltt-marker-control ltt-kprobes ltt-userspace-event ltt-statedump ipc-trace kernel-trace mm-trace net-trace fs-trace jbd2-trace syscall-trace trap-trace block-trace rcu-trace ltt-relay ltt-tracer"
  21 EXTRAMODULES="lockdep-trace net-extended-trace"
  22
  23 usage () {
  24         echo "Usage: $0 [OPTION]..." > /dev/stderr
  25         echo "Disconnect lttng markers" > /dev/stderr
  26         echo "" > /dev/stderr
  27         echo "Options:" > /dev/stderr
  28         printf "\t-q           Quiet mode, suppress output\n" > /dev/stderr
  29         printf "\t-h           Print this help\n" > /dev/stderr
  30         echo "" > /dev/stderr
  31 }
  32
  33 if [ "$(id -u)" != "0" ]; then
  34         echo "Error: This script needs to be run as root." > /dev/stderr
  35         exit 1;
  36 fi
  37
  38 if [ ! "${DEBUGFSROOT}" ]; then
  39         echo "Error: debugfs not mounted" > /dev/stderr
  40         exit 1;
  41 fi
  42
  43 if [ ! -d "${MARKERSROOT}" ]; then
  44         echo "Error: LTT trace controller not found (did you compile and load LTTng?)" > /dev/stderr
  45         exit 1;
  46 fi
  47
  48 while getopts "qh" options; do
  49         case ${options} in
  50                 q) QUIET="0";;
  51                 h) usage;
  52                         exit 0;;
  53                 \?) usage;
  54                         exit 1;;
  55         esac
  56 done
  57 shift $((${OPTIND} - 1))
  58
  59 (eval "find '${MARKERSROOT}' -name metadata -prune -o -name enable -print") | while read -r marker; do
  60         grep "^1$" "${marker}" -q
  61         if [ $? -ne 0 ]; then
  62                 continue
  63         fi
  64         if [ ! ${QUIET} ]; then
  65                 echo "Disconnecting ${marker%/enable}"
  66         fi
  67         echo 0 > ${marker}
  68 done
  69
  70 #Unload the kernel modules
  71 for i in ${EXTRAMODULES}; do
  72         rmmod $i 2> /dev/null
  73 done
  74 for i in ${DEFAULTMODULES}; do
  75         rmmod $i
  76 done
  77