diff --git a/lmkd/include/lmkd.h b/lmkd/include/lmkd.h
index fe6364d..e8f51da 100644
--- a/lmkd/include/lmkd.h
+++ b/lmkd/include/lmkd.h
@@ -30,6 +30,7 @@
     LMK_TARGET = 0,  /* Associate minfree with oom_adj_score */
     LMK_PROCPRIO,    /* Register a process and set its oom_adj_score */
     LMK_PROCREMOVE,  /* Unregister a process */
+    LMK_PROCPURGE,   /* Purge all registered processes */
 };
 
 /*
@@ -142,6 +143,15 @@
     return 2 * sizeof(int);
 }
 
+/*
+ * Prepare LMK_PROCPURGE packet and return packet size in bytes.
+ * Warning: no checks performed, caller should ensure valid parameters.
+ */
+inline size_t lmkd_pack_set_procpurge(LMKD_CTRL_PACKET packet) {
+    packet[0] = htonl(LMK_PROCPURGE);
+    return sizeof(int);
+}
+
 __END_DECLS
 
 #endif /* _LMKD_H_ */
diff --git a/lmkd/lmkd.c b/lmkd/lmkd.c
index cf0bef8..3a3d5db 100644
--- a/lmkd/lmkd.c
+++ b/lmkd/lmkd.c
@@ -619,6 +619,31 @@
     pid_remove(params.pid);
 }
 
+static void cmd_procpurge() {
+    int i;
+    struct proc *procp;
+    struct proc *next;
+
+    if (use_inkernel_interface) {
+        return;
+    }
+
+    for (i = 0; i <= ADJTOSLOT(OOM_SCORE_ADJ_MAX); i++) {
+        procadjslot_list[i].next = &procadjslot_list[i];
+        procadjslot_list[i].prev = &procadjslot_list[i];
+    }
+
+    for (i = 0; i < PIDHASH_SZ; i++) {
+        procp = pidhash[i];
+        while (procp) {
+            next = procp->pidhash_next;
+            free(procp);
+            procp = next;
+        }
+    }
+    memset(&pidhash[0], 0, sizeof(pidhash));
+}
+
 static void cmd_target(int ntargets, LMKD_CTRL_PACKET packet) {
     int i;
     struct lmk_target target;
@@ -761,6 +786,11 @@
             goto wronglen;
         cmd_procremove(packet);
         break;
+    case LMK_PROCPURGE:
+        if (nargs != 0)
+            goto wronglen;
+        cmd_procpurge();
+        break;
     default:
         ALOGE("Received unknown command code %d", cmd);
         return;
diff --git a/logd/FlushCommand.cpp b/logd/FlushCommand.cpp
index 658e079..bd17555 100644
--- a/logd/FlushCommand.cpp
+++ b/logd/FlushCommand.cpp
@@ -42,7 +42,7 @@
     LogTimeEntry::wrlock();
     LastLogTimes::iterator it = times.begin();
     while (it != times.end()) {
-        entry = (*it);
+        entry = it->get();
         if (entry->mClient == client) {
             if (!entry->isWatchingMultiple(mLogMask)) {
                 LogTimeEntry::unlock();
@@ -63,31 +63,12 @@
                 }
             }
             entry->triggerReader_Locked();
-            if (entry->runningReader_Locked()) {
-                LogTimeEntry::unlock();
-                return;
-            }
-            entry->incRef_Locked();
-            break;
+            LogTimeEntry::unlock();
+            return;
         }
         it++;
     }
 
-    if (it == times.end()) {
-        // Create LogTimeEntry in notifyNewLog() ?
-        if (mTail == (unsigned long)-1) {
-            LogTimeEntry::unlock();
-            return;
-        }
-        entry = new LogTimeEntry(mReader, client, mNonBlock, mTail, mLogMask,
-                                 mPid, mStart, mTimeout);
-        times.push_front(entry);
-    }
-
-    client->incRef();
-
-    // release client and entry reference counts once done
-    entry->startReader_Locked();
     LogTimeEntry::unlock();
 }
 
diff --git a/logd/FlushCommand.h b/logd/FlushCommand.h
index 543dfc3..ceaf393 100644
--- a/logd/FlushCommand.h
+++ b/logd/FlushCommand.h
@@ -27,36 +27,11 @@
 
 class FlushCommand : public SocketClientCommand {
     LogReader& mReader;
-    bool mNonBlock;
-    unsigned long mTail;
     log_mask_t mLogMask;
-    pid_t mPid;
-    log_time mStart;
-    uint64_t mTimeout;
 
    public:
-    // for opening a reader
-    explicit FlushCommand(LogReader& reader, bool nonBlock, unsigned long tail,
-                          log_mask_t logMask, pid_t pid, log_time start,
-                          uint64_t timeout)
-        : mReader(reader),
-          mNonBlock(nonBlock),
-          mTail(tail),
-          mLogMask(logMask),
-          mPid(pid),
-          mStart(start),
-          mTimeout((start != log_time::EPOCH) ? timeout : 0) {
-    }
-
-    // for notification of an update
     explicit FlushCommand(LogReader& reader, log_mask_t logMask)
-        : mReader(reader),
-          mNonBlock(false),
-          mTail(-1),
-          mLogMask(logMask),
-          mPid(0),
-          mStart(log_time::EPOCH),
-          mTimeout(0) {
+        : mReader(reader), mLogMask(logMask) {
     }
 
     virtual void runSocketCommand(SocketClient* client);
diff --git a/logd/LogBuffer.cpp b/logd/LogBuffer.cpp
index fd1b8b2..fbdbf79 100644
--- a/logd/LogBuffer.cpp
+++ b/logd/LogBuffer.cpp
@@ -105,10 +105,8 @@
 
     LastLogTimes::iterator times = mTimes.begin();
     while (times != mTimes.end()) {
-        LogTimeEntry* entry = (*times);
-        if (entry->owned_Locked()) {
-            entry->triggerReader_Locked();
-        }
+        LogTimeEntry* entry = times->get();
+        entry->triggerReader_Locked();
         times++;
     }
 
@@ -409,17 +407,15 @@
 
         LastLogTimes::iterator times = mTimes.begin();
         while (times != mTimes.end()) {
-            LogTimeEntry* entry = (*times);
-            if (entry->owned_Locked()) {
-                if (!entry->mNonBlock) {
-                    end_always = true;
-                    break;
-                }
-                // it passing mEnd is blocked by the following checks.
-                if (!end_set || (end <= entry->mEnd)) {
-                    end = entry->mEnd;
-                    end_set = true;
-                }
+            LogTimeEntry* entry = times->get();
+            if (!entry->mNonBlock) {
+                end_always = true;
+                break;
+            }
+            // it passing mEnd is blocked by the following checks.
+            if (!end_set || (end <= entry->mEnd)) {
+                end = entry->mEnd;
+                end_set = true;
             }
             times++;
         }
@@ -710,8 +706,8 @@
     // Region locked?
     LastLogTimes::iterator times = mTimes.begin();
     while (times != mTimes.end()) {
-        LogTimeEntry* entry = (*times);
-        if (entry->owned_Locked() && entry->isWatching(id) &&
+        LogTimeEntry* entry = times->get();
+        if (entry->isWatching(id) &&
             (!oldest || (oldest->mStart > entry->mStart) ||
              ((oldest->mStart == entry->mStart) &&
               (entry->mTimeout.tv_sec || entry->mTimeout.tv_nsec)))) {
@@ -1052,9 +1048,9 @@
                 LogTimeEntry::wrlock();
                 LastLogTimes::iterator times = mTimes.begin();
                 while (times != mTimes.end()) {
-                    LogTimeEntry* entry = (*times);
+                    LogTimeEntry* entry = times->get();
                     // Killer punch
-                    if (entry->owned_Locked() && entry->isWatching(id)) {
+                    if (entry->isWatching(id)) {
                         entry->release_Locked();
                     }
                     times++;
diff --git a/logd/LogReader.cpp b/logd/LogReader.cpp
index 2b6556d..13c7af3 100644
--- a/logd/LogReader.cpp
+++ b/logd/LogReader.cpp
@@ -41,6 +41,7 @@
     runOnEachSocket(&command);
 }
 
+// Note returning false will release the SocketClient instance.
 bool LogReader::onDataAvailable(SocketClient* cli) {
     static bool name_set;
     if (!name_set) {
@@ -57,6 +58,18 @@
     }
     buffer[len] = '\0';
 
+    // Clients are only allowed to send one command, disconnect them if they
+    // send another.
+    LogTimeEntry::wrlock();
+    for (const auto& entry : mLogbuf.mTimes) {
+        if (entry->mClient == cli) {
+            entry->release_Locked();
+            LogTimeEntry::unlock();
+            return false;
+        }
+    }
+    LogTimeEntry::unlock();
+
     unsigned long tail = 0;
     static const char _tail[] = " tail=";
     char* cp = strstr(buffer, _tail);
@@ -199,14 +212,25 @@
         cli->getUid(), cli->getGid(), cli->getPid(), nonBlock ? 'n' : 'b', tail,
         logMask, (int)pid, sequence.nsec(), timeout);
 
-    FlushCommand command(*this, nonBlock, tail, logMask, pid, sequence, timeout);
+    LogTimeEntry::wrlock();
+    auto entry = std::make_unique<LogTimeEntry>(
+        *this, cli, nonBlock, tail, logMask, pid, sequence, timeout);
+    if (!entry->startReader_Locked()) {
+        LogTimeEntry::unlock();
+        return false;
+    }
+
+    // release client and entry reference counts once done
+    cli->incRef();
+    mLogbuf.mTimes.emplace_front(std::move(entry));
 
     // Set acceptable upper limit to wait for slow reader processing b/27242723
     struct timeval t = { LOGD_SNDTIMEO, 0 };
     setsockopt(cli->getSocket(), SOL_SOCKET, SO_SNDTIMEO, (const char*)&t,
                sizeof(t));
 
-    command.runSocketCommand(cli);
+    LogTimeEntry::unlock();
+
     return true;
 }
 
@@ -215,9 +239,8 @@
     LogTimeEntry::wrlock();
     LastLogTimes::iterator it = times.begin();
     while (it != times.end()) {
-        LogTimeEntry* entry = (*it);
+        LogTimeEntry* entry = it->get();
         if (entry->mClient == cli) {
-            times.erase(it);
             entry->release_Locked();
             break;
         }
diff --git a/logd/LogTimes.cpp b/logd/LogTimes.cpp
index 7a6f84b..1715501 100644
--- a/logd/LogTimes.cpp
+++ b/logd/LogTimes.cpp
@@ -30,11 +30,7 @@
 LogTimeEntry::LogTimeEntry(LogReader& reader, SocketClient* client,
                            bool nonBlock, unsigned long tail, log_mask_t logMask,
                            pid_t pid, log_time start, uint64_t timeout)
-    : mRefCount(1),
-      mRelease(false),
-      mError(false),
-      threadRunning(false),
-      leadingDropped(false),
+    : leadingDropped(false),
       mReader(reader),
       mLogMask(logMask),
       mPid(pid),
@@ -52,65 +48,21 @@
     cleanSkip_Locked();
 }
 
-void LogTimeEntry::startReader_Locked(void) {
+bool LogTimeEntry::startReader_Locked() {
     pthread_attr_t attr;
 
-    threadRunning = true;
-
     if (!pthread_attr_init(&attr)) {
         if (!pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED)) {
             if (!pthread_create(&mThread, &attr, LogTimeEntry::threadStart,
                                 this)) {
                 pthread_attr_destroy(&attr);
-                return;
+                return true;
             }
         }
         pthread_attr_destroy(&attr);
     }
-    threadRunning = false;
-    if (mClient) {
-        mClient->decRef();
-    }
-    decRef_Locked();
-}
 
-void LogTimeEntry::threadStop(void* obj) {
-    LogTimeEntry* me = reinterpret_cast<LogTimeEntry*>(obj);
-
-    wrlock();
-
-    if (me->mNonBlock) {
-        me->error_Locked();
-    }
-
-    SocketClient* client = me->mClient;
-
-    if (me->isError_Locked()) {
-        LogReader& reader = me->mReader;
-        LastLogTimes& times = reader.logbuf().mTimes;
-
-        LastLogTimes::iterator it = times.begin();
-        while (it != times.end()) {
-            if (*it == me) {
-                times.erase(it);
-                me->release_nodelete_Locked();
-                break;
-            }
-            it++;
-        }
-
-        me->mClient = nullptr;
-        reader.release(client);
-    }
-
-    if (client) {
-        client->decRef();
-    }
-
-    me->threadRunning = false;
-    me->decRef_Locked();
-
-    unlock();
+    return false;
 }
 
 void* LogTimeEntry::threadStart(void* obj) {
@@ -118,13 +70,7 @@
 
     LogTimeEntry* me = reinterpret_cast<LogTimeEntry*>(obj);
 
-    pthread_cleanup_push(threadStop, obj);
-
     SocketClient* client = me->mClient;
-    if (!client) {
-        me->error();
-        return nullptr;
-    }
 
     LogBuffer& logbuf = me->mReader.logbuf();
 
@@ -137,14 +83,14 @@
 
     log_time start = me->mStart;
 
-    while (me->threadRunning && !me->isError_Locked()) {
+    while (!me->mRelease) {
         if (me->mTimeout.tv_sec || me->mTimeout.tv_nsec) {
             if (pthread_cond_timedwait(&me->threadTriggeredCondition,
                                        &timesLock, &me->mTimeout) == ETIMEDOUT) {
                 me->mTimeout.tv_sec = 0;
                 me->mTimeout.tv_nsec = 0;
             }
-            if (!me->threadRunning || me->isError_Locked()) {
+            if (me->mRelease) {
                 break;
             }
         }
@@ -162,13 +108,12 @@
         wrlock();
 
         if (start == LogBufferElement::FLUSH_ERROR) {
-            me->error_Locked();
             break;
         }
 
         me->mStart = start + log_time(0, 1);
 
-        if (me->mNonBlock || !me->threadRunning || me->isError_Locked()) {
+        if (me->mNonBlock || me->mRelease) {
             break;
         }
 
@@ -179,9 +124,21 @@
         }
     }
 
-    unlock();
+    LogReader& reader = me->mReader;
+    reader.release(client);
 
-    pthread_cleanup_pop(true);
+    client->decRef();
+
+    LastLogTimes& times = reader.logbuf().mTimes;
+    auto it =
+        std::find_if(times.begin(), times.end(),
+                     [&me](const auto& other) { return other.get() == me; });
+
+    if (it != times.end()) {
+        times.erase(it);
+    }
+
+    unlock();
 
     return nullptr;
 }
@@ -247,10 +204,6 @@
         goto skip;
     }
 
-    if (me->isError_Locked()) {
-        goto stop;
-    }
-
     if (!me->mTail) {
         goto ok;
     }
diff --git a/logd/LogTimes.h b/logd/LogTimes.h
index 76d016c..f4e165f 100644
--- a/logd/LogTimes.h
+++ b/logd/LogTimes.h
@@ -22,6 +22,7 @@
 #include <time.h>
 
 #include <list>
+#include <memory>
 
 #include <log/log.h>
 #include <sysutils/SocketClient.h>
@@ -33,16 +34,12 @@
 
 class LogTimeEntry {
     static pthread_mutex_t timesLock;
-    unsigned int mRefCount;
-    bool mRelease;
-    bool mError;
-    bool threadRunning;
+    bool mRelease = false;
     bool leadingDropped;
     pthread_cond_t threadTriggeredCondition;
     pthread_t mThread;
     LogReader& mReader;
     static void* threadStart(void* me);
-    static void threadStop(void* me);
     const log_mask_t mLogMask;
     const pid_t mPid;
     unsigned int skipAhead[LOG_ID_MAX];
@@ -73,11 +70,8 @@
         pthread_mutex_unlock(&timesLock);
     }
 
-    void startReader_Locked(void);
+    bool startReader_Locked();
 
-    bool runningReader_Locked(void) const {
-        return threadRunning || mRelease || mError || mNonBlock;
-    }
     void triggerReader_Locked(void) {
         pthread_cond_signal(&threadTriggeredCondition);
     }
@@ -87,54 +81,11 @@
     }
     void cleanSkip_Locked(void);
 
-    // These called after LogTimeEntry removed from list, lock implicitly held
-    void release_nodelete_Locked(void) {
-        mRelease = true;
-        pthread_cond_signal(&threadTriggeredCondition);
-        // assumes caller code path will call decRef_Locked()
-    }
-
     void release_Locked(void) {
         mRelease = true;
         pthread_cond_signal(&threadTriggeredCondition);
-        if (mRefCount || threadRunning) {
-            return;
-        }
-        // No one else is holding a reference to this
-        delete this;
     }
 
-    // Called to mark socket in jeopardy
-    void error_Locked(void) {
-        mError = true;
-    }
-    void error(void) {
-        wrlock();
-        error_Locked();
-        unlock();
-    }
-
-    bool isError_Locked(void) const {
-        return mRelease || mError;
-    }
-
-    // Mark Used
-    //  Locking implied, grabbed when protection around loop iteration
-    void incRef_Locked(void) {
-        ++mRefCount;
-    }
-
-    bool owned_Locked(void) const {
-        return mRefCount != 0;
-    }
-
-    void decRef_Locked(void) {
-        if ((mRefCount && --mRefCount) || !mRelease || threadRunning) {
-            return;
-        }
-        // No one else is holding a reference to this
-        delete this;
-    }
     bool isWatching(log_id_t id) const {
         return mLogMask & (1 << id);
     }
@@ -146,6 +97,6 @@
     static int FilterSecondPass(const LogBufferElement* element, void* me);
 };
 
-typedef std::list<LogTimeEntry*> LastLogTimes;
+typedef std::list<std::unique_ptr<LogTimeEntry>> LastLogTimes;
 
 #endif  // _LOGD_LOG_TIMES_H__