PartitionActions.cpp

/* === This file is part of Calamares - <https://github.com/calamares> ===
 *
 *   Copyright 2014-2017, Teo Mrnjavac <teo@kde.org>
 *   Copyright 2017-2018, Adriaan de Groot <groot@kde.org>
 *   Copyright 2019, Collabora Ltd <arnaud.ferraris@collabora.com>
 *
 *   Calamares is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   Calamares 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 Calamares. If not, see <http://www.gnu.org/licenses/>.
 */

#include "PartitionActions.h"

#include "core/KPMHelpers.h"
#include "core/PartitionInfo.h"
#include "core/PartitionCoreModule.h"
#include "core/PartUtils.h"

#include "utils/CalamaresUtilsSystem.h"
#include "utils/Units.h"
#include "utils/NamedEnum.h"

#include "GlobalStorage.h"
#include "JobQueue.h"
#include "utils/Logger.h"

#include <kpmcore/core/device.h>
#include <kpmcore/core/partition.h>

#include <QDir>

namespace PartitionActions
{
using CalamaresUtils::operator""_GiB;
using CalamaresUtils::operator""_MiB;

qint64
swapSuggestion( const qint64 availableSpaceB, Choices::SwapChoice swap )
{
    if ( ( swap != Choices::SmallSwap ) && ( swap != Choices::FullSwap ) )
        return 0;

    // See partition.conf for explanation
    qint64 suggestedSwapSizeB = 0;
    auto memory = CalamaresUtils::System::instance()->getTotalMemoryB();
    qint64 availableRamB = memory.first;
    qreal overestimationFactor = memory.second;

    bool ensureSuspendToDisk = swap == Choices::FullSwap;

    // Ramp up quickly to 8GiB, then follow memory size
    if ( availableRamB <= 4_GiB )
        suggestedSwapSizeB = availableRamB * 2;
    else if ( availableRamB <= 8_GiB )
        suggestedSwapSizeB = 8_GiB;
    else
        suggestedSwapSizeB = availableRamB;

    // .. top out at 8GiB if we don't care about suspend
    if ( !ensureSuspendToDisk )
        suggestedSwapSizeB = qMin( 8_GiB, suggestedSwapSizeB );