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/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "powerhal-libperfmgr"
#define ATRACE_TAG (ATRACE_TAG_POWER | ATRACE_TAG_HAL)
#include "PowerSessionManager.h"
#include <android-base/file.h>
#include <log/log.h>
#include <perfmgr/HintManager.h>
#include <processgroup/processgroup.h>
#include <sys/syscall.h>
#include <utils/Trace.h>
namespace aidl {
namespace google {
namespace hardware {
namespace power {
namespace impl {
namespace pixel {
using ::android::perfmgr::HintManager;
namespace {
/* there is no glibc or bionic wrapper */
struct sched_attr {
__u32 size;
__u32 sched_policy;
__u64 sched_flags;
__s32 sched_nice;
__u32 sched_priority;
__u64 sched_runtime;
__u64 sched_deadline;
__u64 sched_period;
__u32 sched_util_min;
__u32 sched_util_max;
};
static int sched_setattr(int pid, struct sched_attr *attr, unsigned int flags) {
if (!HintManager::GetInstance()->GetAdpfProfile()->mUclampMinOn) {
ALOGV("PowerSessionManager:%s: skip", __func__);
return 0;
}
return syscall(__NR_sched_setattr, pid, attr, flags);
}
static void set_uclamp_min(int tid, int min) {
static constexpr int32_t kMaxUclampValue = 1024;
min = std::max(0, min);
min = std::min(min, kMaxUclampValue);
sched_attr attr = {};
attr.size = sizeof(attr);
attr.sched_flags = (SCHED_FLAG_KEEP_ALL | SCHED_FLAG_UTIL_CLAMP_MIN);
attr.sched_util_min = min;
int ret = sched_setattr(tid, &attr, 0);
if (ret) {
ALOGW("sched_setattr failed for thread %d, err=%d", tid, errno);
}
}
} // namespace
void PowerSessionManager::updateHintMode(const std::string &mode, bool enabled) {
ALOGV("PowerSessionManager::updateHintMode: mode: %s, enabled: %d", mode.c_str(), enabled);
if (enabled && mode.compare(0, 8, "REFRESH_") == 0) {
if (mode.compare("REFRESH_120FPS") == 0) {
mDisplayRefreshRate = 120;
} else if (mode.compare("REFRESH_90FPS") == 0) {
mDisplayRefreshRate = 90;
} else if (mode.compare("REFRESH_60FPS") == 0) {
mDisplayRefreshRate = 60;
}
}
if (HintManager::GetInstance()->GetAdpfProfile()) {
HintManager::GetInstance()->SetAdpfProfile(mode);
}
}
void PowerSessionManager::updateHintBoost(const std::string &boost, int32_t durationMs) {
ATRACE_CALL();
ALOGV("PowerSessionManager::updateHintBoost: boost: %s, durationMs: %d", boost.c_str(),
durationMs);
if (boost.compare("DISPLAY_UPDATE_IMMINENT") == 0) {
wakeSessions();
}
}
void PowerSessionManager::wakeSessions() {
std::lock_guard<std::mutex> guard(mLock);
for (PowerHintSession *s : mSessions) {
s->wakeup();
}
}
int PowerSessionManager::getDisplayRefreshRate() {
return mDisplayRefreshRate;
}
void PowerSessionManager::addPowerSession(PowerHintSession *session) {
std::lock_guard<std::mutex> guard(mLock);
for (auto t : session->getTidList()) {
mTidSessionListMap[t].insert(session);
if (mTidRefCountMap.find(t) == mTidRefCountMap.end()) {
if (!SetTaskProfiles(t, {"ResetUclampGrp"})) {
ALOGW("Failed to set ResetUclampGrp task profile for tid:%d", t);
} else {
mTidRefCountMap[t] = 1;
}
continue;
}
if (mTidRefCountMap[t] <= 0) {
ALOGE("Error! Unexpected zero/negative RefCount:%d for tid:%d", mTidRefCountMap[t], t);
continue;
}
mTidRefCountMap[t]++;
}
mSessions.insert(session);
}
void PowerSessionManager::removePowerSession(PowerHintSession *session) {
std::lock_guard<std::mutex> guard(mLock);
for (auto t : session->getTidList()) {
if (mTidRefCountMap.find(t) == mTidRefCountMap.end()) {
ALOGE("Unexpected Error! Failed to look up tid:%d in TidRefCountMap", t);
continue;
}
mTidSessionListMap[t].erase(session);
mTidRefCountMap[t]--;
if (mTidRefCountMap[t] <= 0) {
if (!SetTaskProfiles(t, {"NoResetUclampGrp"})) {
ALOGW("Failed to set NoResetUclampGrp task profile for tid:%d", t);
}
mTidRefCountMap.erase(t);
}
}
mSessions.erase(session);
}
void PowerSessionManager::setUclampMin(PowerHintSession *session, int val) {
std::lock_guard<std::mutex> guard(mLock);
setUclampMinLocked(session, val);
}
void PowerSessionManager::setUclampMinLocked(PowerHintSession *session, int val) {
for (auto t : session->getTidList()) {
// Get thex max uclamp.min across sessions which include the tid.
int tidMax = 0;
for (PowerHintSession *s : mTidSessionListMap[t]) {
if (!s->isActive() || s->isStale())
continue;
tidMax = std::max(tidMax, s->getUclampMin());
}
val = std::max(val, tidMax);
set_uclamp_min(t, val);
}
}
std::optional<bool> PowerSessionManager::isAnyAppSessionActive() {
std::lock_guard<std::mutex> guard(mLock);
bool active = false;
for (PowerHintSession *s : mSessions) {
// session active and not stale is actually active.
if (s->isActive() && !s->isStale() && s->isAppSession()) {
active = true;
break;
}
}
if (active == mActive) {
return std::nullopt;
} else {
mActive = active;
}
return active;
}
void PowerSessionManager::handleMessage(const Message &) {
auto active = isAnyAppSessionActive();
if (!active.has_value()) {
return;
}
if (active.value()) {
disableSystemTopAppBoost();
} else {
enableSystemTopAppBoost();
}
}
void PowerSessionManager::dumpToFd(int fd) {
std::ostringstream dump_buf;
std::lock_guard<std::mutex> guard(mLock);
dump_buf << "========== Begin PowerSessionManager ADPF list ==========\n";
for (PowerHintSession *s : mSessions) {
s->dumpToStream(dump_buf);
dump_buf << " Tid:Ref[";
for (size_t i = 0, len = s->getTidList().size(); i < len; i++) {
int t = s->getTidList()[i];
dump_buf << t << ":" << mTidSessionListMap[t].size();
if (i < len - 1) {
dump_buf << ", ";
}
}
dump_buf << "]\n";
}
dump_buf << "========== End PowerSessionManager ADPF list ==========\n";
if (!::android::base::WriteStringToFd(dump_buf.str(), fd)) {
ALOGE("Failed to dump one of session list to fd:%d", fd);
}
}
void PowerSessionManager::enableSystemTopAppBoost() {
if (HintManager::GetInstance()->IsHintSupported(kDisableBoostHintName)) {
ALOGV("PowerSessionManager::enableSystemTopAppBoost!!");
HintManager::GetInstance()->EndHint(kDisableBoostHintName);
}
}
void PowerSessionManager::disableSystemTopAppBoost() {
if (HintManager::GetInstance()->IsHintSupported(kDisableBoostHintName)) {
ALOGV("PowerSessionManager::disableSystemTopAppBoost!!");
HintManager::GetInstance()->DoHint(kDisableBoostHintName);
}
}
// =========== PowerHintMonitor implementation start from here ===========
void PowerHintMonitor::start() {
if (!isRunning()) {
run("PowerHintMonitor", ::android::PRIORITY_HIGHEST);
}
}
bool PowerHintMonitor::threadLoop() {
while (true) {
mLooper->pollOnce(-1);
}
return true;
}
sp<Looper> PowerHintMonitor::getLooper() {
return mLooper;
}
} // namespace pixel
} // namespace impl
} // namespace power
} // namespace hardware
} // namespace google
} // namespace aidl