power-libperfmgr/aidl/PowerSessionManager.cpp - platform/hardware/google/pixel - Git at Google

 /*
  * 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) {
         PowerHintMonitor::getInstance()->getLooper()->sendMessage(mWakeupHandler, NULL);
     }
 }

 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->isTimeout())
                 continue;
             tidMax = std::max(tidMax, s->getUclampMin());
         }
         set_uclamp_min(t, std::max(val, tidMax));
     }
 }

 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->isTimeout() && 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::WakeupHandler::handleMessage(const Message &) {
     PowerSessionManager::getInstance()->wakeSessions();
 }

 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
	/*
	* 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) {
	PowerHintMonitor::getInstance()->getLooper()->sendMessage(mWakeupHandler, NULL);
	}
	}

	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->isTimeout())
	continue;
	tidMax = std::max(tidMax, s->getUclampMin());
	}
	set_uclamp_min(t, std::max(val, tidMax));
	}
	}

	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->isTimeout() && 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::WakeupHandler::handleMessage(const Message &) {
	PowerSessionManager::getInstance()->wakeSessions();
	}

	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