diff --git a/defs.h b/defs.h
index 55ca09d..ce67f9c 100755
--- a/defs.h
+++ b/defs.h
@@ -1881,6 +1881,9 @@ struct offset_table {                    /* stash of commonly-used offsets */
 	long task_struct_thread_context_fp;
 	long task_struct_thread_context_sp;
 	long task_struct_thread_context_pc;
+	long task_struct_thread_group;
+	long task_struct_rss_stat;
+	long task_rss_stat_count;
 };
 
 struct size_table {         /* stash of commonly-used sizes */
diff --git a/memory.c b/memory.c
index 53ad4a2..f6957d1 100755
--- a/memory.c
+++ b/memory.c
@@ -3976,6 +3976,7 @@ void
 get_task_mem_usage(ulong task, struct task_mem_usage *tm)
 {
 	struct task_context *tc;
+	long rss = 0;
 
 	BZERO(tm, sizeof(struct task_mem_usage));
 
@@ -4009,22 +4010,65 @@ get_task_mem_usage(ulong task, struct task_mem_usage *tm)
 				filepages = 0;
 				anonpages = 1;
 			}
-			tm->rss += ULONG(tt->mm_struct + 
+			rss += LONG(tt->mm_struct +
 				OFFSET(mm_struct_rss_stat) +
 				OFFSET(mm_rss_stat_count) +
-				(filepages * sizeof(ulong)));
-			tm->rss += ULONG(tt->mm_struct + 
+				(filepages * sizeof(long)));
+			rss += LONG(tt->mm_struct +
 				OFFSET(mm_struct_rss_stat) +
 				OFFSET(mm_rss_stat_count) +
-				(anonpages * sizeof(ulong)));
+				(anonpages * sizeof(long)));
 		}
+
+		/* Check whether SPLIT_RSS_COUNTING is enabled */
+		if (VALID_MEMBER(task_struct_rss_stat)) {
+			int i, sync_rss;
+			ulong tgid;
+			struct task_context *tc1;
+
+			tgid = task_tgid(task);
+
+			tc1 = FIRST_CONTEXT();
+			for (i = 0; i < RUNNING_TASKS(); i++, tc1++) {
+				if (task_tgid(tc1->task) != tgid)
+					continue;
+
+				/* count 0 -> filepages */
+				if (!readmem(tc1->task +
+					OFFSET(task_struct_rss_stat) +
+					OFFSET(task_rss_stat_count), KVADDR,
+					&sync_rss,
+					sizeof(int),
+					"task_struct rss_stat MM_FILEPAGES",
+					RETURN_ON_ERROR))
+						continue;
+
+				rss += sync_rss;
+
+				/* count 1 -> anonpages */
+				if (!readmem(tc1->task +
+					OFFSET(task_struct_rss_stat) +
+					OFFSET(task_rss_stat_count) +
+					sizeof(int),
+					KVADDR, &sync_rss,
+					sizeof(int),
+					"task_struct rss_stat MM_ANONPAGES",
+					RETURN_ON_ERROR))
+						continue;
+
+				rss += sync_rss;
+			}
+		}
+
 		/*  
 		 *  mm_struct._anon_rss and mm_struct._file_rss should exist. 
 		 */
 		if (VALID_MEMBER(mm_struct_anon_rss))
-			tm->rss +=  ULONG(tt->mm_struct + OFFSET(mm_struct_anon_rss));
+			rss +=  LONG(tt->mm_struct + OFFSET(mm_struct_anon_rss));
 		if (VALID_MEMBER(mm_struct_file_rss))
-			tm->rss +=  ULONG(tt->mm_struct + OFFSET(mm_struct_file_rss));
+			rss +=  LONG(tt->mm_struct + OFFSET(mm_struct_file_rss));
+
+		tm->rss = (unsigned long)rss;
 	}
         tm->total_vm = ULONG(tt->mm_struct + OFFSET(mm_struct_total_vm));
         tm->pgd_addr = ULONG(tt->mm_struct + OFFSET(mm_struct_pgd));
diff --git a/task.c b/task.c
index 6fb2b4e..db477ec 100755
--- a/task.c
+++ b/task.c
@@ -349,6 +349,15 @@ task_init(void)
 		MEMBER_OFFSET_INIT(task_struct_run_list, "task_struct",
 			"run_list");
 
+	MEMBER_OFFSET_INIT(task_struct_thread_group, "task_struct",
+		"thread_group");
+
+	MEMBER_OFFSET_INIT(task_struct_rss_stat, "task_struct",
+		"rss_stat");
+
+	MEMBER_OFFSET_INIT(task_rss_stat_count, "task_rss_stat",
+		"count");
+
         if ((tt->task_struct = (char *)malloc(SIZE(task_struct))) == NULL)
         	error(FATAL, "cannot malloc task_struct space.");
 
-- 
1.7.6