Snap for 5255085 from 6f2198b33cd4de28f98f8a834e4c0bd98a954c74 to pi-qpr3-release
Change-Id: Ibdb184f79923aeeb54811889905269a700414868
diff --git a/lmkd/lmkd.c b/lmkd/lmkd.c
index ef1bf10..92cdaa0 100644
--- a/lmkd/lmkd.c
+++ b/lmkd/lmkd.c
@@ -16,6 +16,7 @@
#define LOG_TAG "lowmemorykiller"
+#include <dirent.h>
#include <errno.h>
#include <inttypes.h>
#include <sched.h>
@@ -26,15 +27,19 @@
#include <sys/epoll.h>
#include <sys/eventfd.h>
#include <sys/mman.h>
+#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/sysinfo.h>
+#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <cutils/properties.h>
+#include <cutils/sched_policy.h>
#include <cutils/sockets.h>
#include <lmkd.h>
#include <log/log.h>
+#include <system/thread_defs.h>
#ifdef LMKD_LOG_STATS
#include "statslog.h"
@@ -1029,6 +1034,40 @@
return maxprocp;
}
+static void set_process_group_and_prio(int pid, SchedPolicy sp, int prio) {
+ DIR* d;
+ char proc_path[PATH_MAX];
+ struct dirent* de;
+
+ snprintf(proc_path, sizeof(proc_path), "/proc/%d/task", pid);
+ if (!(d = opendir(proc_path))) {
+ ALOGW("Failed to open %s; errno=%d: process pid(%d) might have died", proc_path, errno, pid);
+ return;
+ }
+
+ while ((de = readdir(d))) {
+ int t_pid;
+
+ if (de->d_name[0] == '.') continue;
+ t_pid = atoi(de->d_name);
+
+ if (!t_pid) {
+ ALOGW("Failed to get t_pid for '%s' of pid(%d)", de->d_name, pid);
+ continue;
+ }
+
+ if (setpriority(PRIO_PROCESS, t_pid, prio) && errno != ESRCH) {
+ ALOGW("Unable to raise priority of killing t_pid (%d): errno=%d", t_pid, errno);
+ }
+
+ if (set_cpuset_policy(t_pid, sp)) {
+ ALOGW("Failed to set_cpuset_policy on pid(%d) t_pid(%d) to %d", pid, t_pid, (int)sp);
+ continue;
+ }
+ }
+ closedir(d);
+}
+
static int last_killed_pid = -1;
/* Kill one process specified by procp. Returns the size of the process killed */
@@ -1069,6 +1108,9 @@
/* CAP_KILL required */
r = kill(pid, SIGKILL);
+
+ set_process_group_and_prio(pid, SP_FOREGROUND, ANDROID_PRIORITY_HIGHEST);
+
ALOGI("Kill '%s' (%d), uid %d, oom_adj %d to free %ldkB",
taskname, pid, uid, procp->oomadj, tasksize * page_k);
