#!/usr/bin/env bash

#!/usr/bin/env bash
#
# Copyright Materialize, Inc. and contributors. All rights reserved.
#
# Use of this software is governed by the Business Source License
# included in the LICENSE file at the root of this repository.
#
# As of the Change Date specified in that file, in accordance with
# the Business Source License, use of this software will be governed
# by the Apache License, Version 2.0.

# Script to build and install a version of perf that can symbolize rust
# binaries in a performant fashion

echo "Installing perf build-time dependencies"
sudo apt install -y libbfd-dev libiberty-dev

echo "Installing build dependencies to enable majority of perf features"
sudo apt install -y bison \
                    flex \
                    libbabeltrace-ctf-dev \
                    libcap-dev \
                    libdw-dev \
                    libelf-dev \
                    libgtk2.0-dev \
                    liblzma-dev \
                    libnuma-dev \
                    libslang2-dev \
                    libunwind-dev \
                    libzstd-dev \
                    python-dev \
                    systemtap-sdt-dev

# TODO: Accept user's local copy of the linux source tree as input
# or check for something like "${HOME}/src/linux"
tmpdir=$(mktemp -d)
cd "${tmpdir}" || exit 1

echo "Installing linux source code"
git clone https://github.com/torvalds/linux --depth 1
cd linux/tools/perf || exit 1
make

if [[ -d "${HOME}/bin" ]]; then
    echo "Installing perf into ${HOME}/bin"
    cp perf "${HOME}/bin"
fi

echo "Giving all users access to run all perf events"
sudo sh -c 'echo kernel.perf_event_paranoid=-1 > /etc/sysctl.d/60-mtrlz-enable-perf.conf'

echo "You will need to reboot your system before perf will work"