diff -uNr procps-ng-3.3.15/proc/sysinfo.c procps-ng-3.3.15.mod/proc/sysinfo.c
--- procps-ng-3.3.15/proc/sysinfo.c	2018-05-19 00:32:22.010979780 +0300
+++ procps-ng-3.3.15.mod/proc/sysinfo.c	2019-08-07 15:35:19.297799005 +0300
@@ -105,19 +105,31 @@
 /***********************************************************************/
 int uptime(double *restrict uptime_secs, double *restrict idle_secs) {
     double up=0, idle=0;
+#ifndef __ANDROID__
     char *savelocale;
+#endif
+
+    if (uptime_fd == -1 && (uptime_fd = open(UPTIME_FILE, O_RDONLY)) == -1) {
+	return 0;
+    }
 
     FILE_TO_BUF(UPTIME_FILE,uptime_fd);
+#ifndef __ANDROID__
     savelocale = strdup(setlocale(LC_NUMERIC, NULL));
     setlocale(LC_NUMERIC,"C");
+#endif
     if (sscanf(buf, "%lf %lf", &up, &idle) < 2) {
+#ifndef __ANDROID__
         setlocale(LC_NUMERIC,savelocale);
         free(savelocale);
+#endif
         fputs("bad data in " UPTIME_FILE "\n", stderr);
 	    return 0;
     }
+#ifndef __ANDROID__
     setlocale(LC_NUMERIC,savelocale);
     free(savelocale);
+#endif
     SET_IF_DESIRED(uptime_secs, up);
     SET_IF_DESIRED(idle_secs, idle);
     return up;	/* assume never be zero seconds in practice */
@@ -134,6 +146,7 @@
     /* /proc/stat can get very large on multi-CPU systems so we
        can't use FILE_TO_BUF */
     if (!(f = fopen(STAT_FILE, "r"))) {
+	return 0;
 	fputs(BAD_OPEN_MESSAGE, stderr);
 	fflush(NULL);
 	_exit(102);
@@ -193,7 +206,9 @@
   double up_1, up_2, seconds;
   unsigned long long jiffies;
   unsigned h;
+#ifndef __ANDROID__
   char *savelocale;
+#endif
   long hz;
 
 #ifdef _SC_CLK_TCK
@@ -204,8 +219,10 @@
 #endif
 
   wait_j = hirq_j = sirq_j = stol_j = 0;
+#ifndef __ANDROID__
   savelocale = strdup(setlocale(LC_NUMERIC, NULL));
   setlocale(LC_NUMERIC, "C");
+#endif
   do{
     FILE_TO_BUF(UPTIME_FILE,uptime_fd);  sscanf(buf, "%lf", &up_1);
     /* uptime(&up_1, NULL); */
@@ -214,8 +231,10 @@
     FILE_TO_BUF(UPTIME_FILE,uptime_fd);  sscanf(buf, "%lf", &up_2);
     /* uptime(&up_2, NULL); */
   } while((long long)( (up_2-up_1)*1000.0/up_1 )); /* want under 0.1% error */
+#ifndef __ANDROID__
   setlocale(LC_NUMERIC, savelocale);
   free(savelocale);
+#endif
   jiffies = user_j + nice_j + sys_j + other_j + wait_j + hirq_j + sirq_j + stol_j ;
   seconds = (up_1 + up_2) / 2;
   h = (unsigned)( (double)jiffies/seconds/smp_num_cpus );
@@ -445,18 +464,30 @@
 /***********************************************************************/
 void loadavg(double *restrict av1, double *restrict av5, double *restrict av15) {
     double avg_1=0, avg_5=0, avg_15=0;
+#ifndef __ANDROID__
     char *savelocale;
+#endif
+
+    if (loadavg_fd == -1 && (loadavg_fd = open(LOADAVG_FILE, O_RDONLY)) == -1) {
+	return;
+    }
 
     FILE_TO_BUF(LOADAVG_FILE,loadavg_fd);
+#ifndef __ANDROID__
     savelocale = strdup(setlocale(LC_NUMERIC, NULL));
     setlocale(LC_NUMERIC, "C");
+#endif
     if (sscanf(buf, "%lf %lf %lf", &avg_1, &avg_5, &avg_15) < 3) {
 	fputs("bad data in " LOADAVG_FILE "\n", stderr);
+#ifndef __ANDROID__
 	free(savelocale);
+#endif
 	exit(1);
     }
+#ifndef __ANDROID__
     setlocale(LC_NUMERIC, savelocale);
     free(savelocale);
+#endif
     SET_IF_DESIRED(av1,  avg_1);
     SET_IF_DESIRED(av5,  avg_5);
     SET_IF_DESIRED(av15, avg_15);
@@ -791,27 +822,8 @@
     mem_used = kb_main_total - kb_main_free;
   kb_main_used = (unsigned long)mem_used;
 
-  /* zero? might need fallback for 2.6.27 <= kernel <? 3.14 */
   if (!kb_main_available) {
-#ifdef __linux__
-    if (linux_version_code < LINUX_VERSION(2, 6, 27))
-      kb_main_available = kb_main_free;
-    else {
-      FILE_TO_BUF(VM_MIN_FREE_FILE, vm_min_free_fd);
-      kb_min_free = (unsigned long) strtoull(buf,&tail,10);
-
-      watermark_low = kb_min_free * 5 / 4; /* should be equal to sum of all 'low' fields in /proc/zoneinfo */
-
-      mem_available = (signed long)kb_main_free - watermark_low
-      + kb_inactive_file + kb_active_file - MIN((kb_inactive_file + kb_active_file) / 2, watermark_low)
-      + kb_slab_reclaimable - MIN(kb_slab_reclaimable / 2, watermark_low);
-
-      if (mem_available < 0) mem_available = 0;
-      kb_main_available = (unsigned long)mem_available;
-    }
-#else
-      kb_main_available = kb_main_free;
-#endif /* linux */
+      kb_main_available = kb_main_free + kb_page_cache + kb_main_buffers;
   }
 }