Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/scripts/crosstap b/scripts/crosstap
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+#!/bin/bash
+#
+# Run a systemtap script on remote target
+#
+# Examples (run on build host, target is 192.168.1.xxx):
+# $ source oe-init-build-env"
+# $ cd ~/my/systemtap/scripts"
+#
+# $ crosstap root@192.168.1.xxx myscript.stp"
+# $ crosstap root@192.168.1.xxx myscript-with-args.stp 99 ninetynine"
+#
+# Copyright (c) 2012, Intel Corporation.
+# All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+function usage() {
+ echo "Usage: $0 <user@hostname> <sytemtap-script> [additional systemtap-script args]"
+}
+
+function setup_usage() {
+ echo ""
+ echo "'crosstap' requires a local sdk build of the target system"
+ echo "(or a build that includes 'tools-profile') in order to build"
+ echo "kernel modules that can probe the target system."
+ echo ""
+ echo "Practically speaking, that means you need to do the following:"
+ echo " - If you're running a pre-built image, download the release"
+ echo " and/or BSP tarballs used to build the image."
+ echo " - If you're working from git sources, just clone the metadata"
+ echo " and BSP layers needed to build the image you'll be booting."
+ echo " - Make sure you're properly set up to build a new image (see"
+ echo " the BSP README and/or the widely available basic documentation"
+ echo " that discusses how to build images)."
+ echo " - Build an -sdk version of the image e.g.:"
+ echo " $ bitbake core-image-sato-sdk"
+ echo " OR"
+ echo " - Build a non-sdk image but include the profiling tools:"
+ echo " [ edit local.conf and add 'tools-profile' to the end of"
+ echo " the EXTRA_IMAGE_FEATURES variable ]"
+ echo " $ bitbake core-image-sato"
+ echo ""
+ echo " [ NOTE that 'crosstap' needs to be able to ssh into the target"
+ echo " system, which isn't enabled by default in -minimal images. ]"
+ echo ""
+ echo "Once you've build the image on the host system, you're ready to"
+ echo "boot it (or the equivalent pre-built image) and use 'crosstap'"
+ echo "to probe it (you need to source the environment as usual first):"
+ echo ""
+ echo " $ source oe-init-build-env"
+ echo " $ cd ~/my/systemtap/scripts"
+ echo " $ crosstap root@192.168.1.xxx myscript.stp"
+ echo ""
+}
+
+function systemtap_target_arch() {
+ SYSTEMTAP_TARGET_ARCH=$1
+ case $SYSTEMTAP_TARGET_ARCH in
+ i?86)
+ SYSTEMTAP_TARGET_ARCH="i386"
+ ;;
+ x86?64*)
+ SYSTEMTAP_TARGET_ARCH="x86_64"
+ ;;
+ arm*)
+ SYSTEMTAP_TARGET_ARCH="arm"
+ ;;
+ powerpc*)
+ SYSTEMTAP_TARGET_ARCH="powerpc"
+ ;;
+ *)
+ ;;
+ esac
+}
+
+if [ $# -lt 2 ]; then
+ usage
+ exit 1
+fi
+
+if [ -z "$BUILDDIR" ]; then
+ echo "Error: Unable to find the BUILDDIR environment variable."
+ echo "Did you forget to source your build system environment setup script?"
+ exit 1
+fi
+
+pushd $PWD
+cd $BUILDDIR
+BITBAKE_VARS=`bitbake -e virtual/kernel`
+popd
+
+STAGING_BINDIR_TOOLCHAIN=$(echo "$BITBAKE_VARS" | grep ^STAGING_BINDIR_TOOLCHAIN \
+ | cut -d '=' -f2 | cut -d '"' -f2)
+STAGING_BINDIR_TOOLPREFIX=$(echo "$BITBAKE_VARS" | grep ^TARGET_PREFIX \
+ | cut -d '=' -f2 | cut -d '"' -f2)
+SYSTEMTAP_HOST_INSTALLDIR=$(echo "$BITBAKE_VARS" | grep ^STAGING_DIR_NATIVE \
+ | cut -d '=' -f2 | cut -d '"' -f2)
+TARGET_ARCH=$(echo "$BITBAKE_VARS" | grep ^TRANSLATED_TARGET_ARCH \
+ | cut -d '=' -f2 | cut -d '"' -f2)
+TARGET_KERNEL_BUILDDIR=$(echo "$BITBAKE_VARS" | grep ^B= \
+ | cut -d '=' -f2 | cut -d '"' -f2)
+
+systemtap_target_arch "$TARGET_ARCH"
+
+if [ ! -d $TARGET_KERNEL_BUILDDIR ] ||
+ [ ! -f $TARGET_KERNEL_BUILDDIR/vmlinux ]; then
+ echo -e "\nError: No target kernel build found."
+ echo -e "Did you forget to create a local build of your image?"
+ setup_usage
+ exit 1
+fi
+
+if [ ! -f $SYSTEMTAP_HOST_INSTALLDIR/usr/bin/stap ]; then
+ echo -e "\nError: Native (host) systemtap not found."
+ echo -e "Did you accidentally build a local non-sdk image? (or forget to"
+ echo -e "add 'tools-profile' to EXTRA_IMAGE_FEATURES in your local.conf)?"
+ setup_usage
+ exit 1
+fi
+
+target_user_hostname="$1"
+full_script_name="$2"
+script_name=$(basename "$2")
+script_base=${script_name%.*}
+shift 2
+
+${SYSTEMTAP_HOST_INSTALLDIR}/usr/bin/stap \
+ -a ${SYSTEMTAP_TARGET_ARCH} \
+ -B CROSS_COMPILE="${STAGING_BINDIR_TOOLCHAIN}/${STAGING_BINDIR_TOOLPREFIX}" \
+ -r ${TARGET_KERNEL_BUILDDIR} \
+ -I ${SYSTEMTAP_HOST_INSTALLDIR}/usr/share/systemtap/tapset \
+ -R ${SYSTEMTAP_HOST_INSTALLDIR}/usr/share/systemtap/runtime \
+ --remote=$target_user_hostname \
+ -m $script_base \
+ $full_script_name "$@"
+
+exit 0