Revert "sched: Improve the scheduler"

This reverts commit 92daaf50af.

Change-Id: I52d562da3c755f114d459ad09813188697ca81d8

kernel/sched/core.c

@@ -4936,10 +4936,8 @@ unsigned int sched_lib_mask_force;
 bool is_sched_lib_based_app(pid_t pid)
 {
 	const char *name = NULL;
-	char *libname, *lib_list;
 	struct vm_area_struct *vma;
 	char path_buf[LIB_PATH_LENGTH];
-	char *tmp_lib_name;
 	bool found = false;
 	struct task_struct *p;
 	struct mm_struct *mm;
@@ -4947,16 +4945,11 @@ bool is_sched_lib_based_app(pid_t pid)
 	if (strnlen(sched_lib_name, LIB_PATH_LENGTH) == 0)
 		return false;
 
-	tmp_lib_name = kmalloc(LIB_PATH_LENGTH, GFP_KERNEL);
-	if (!tmp_lib_name)
-		return false;
-
 	rcu_read_lock();
 
 	p = find_process_by_pid(pid);
 	if (!p) {
 		rcu_read_unlock();
-		kfree(tmp_lib_name);
 		return false;
 	}
 
@@ -4976,15 +4969,10 @@ bool is_sched_lib_based_app(pid_t pid)
 			if (IS_ERR(name))
 				goto release_sem;
 
-			strlcpy(tmp_lib_name, sched_lib_name, LIB_PATH_LENGTH);
-			lib_list = tmp_lib_name;
-			while ((libname = strsep(&lib_list, ","))) {
-				libname = skip_spaces(libname);
-				if (strnstr(name, libname,
+			if (strnstr(name, sched_lib_name,
 					strnlen(name, LIB_PATH_LENGTH))) {
-					found = true;
-					goto release_sem;
-				}
+				found = true;
+				break;
 			}
 		}
 	}
@@ -4994,7 +4982,6 @@ release_sem:
 	mmput(mm);
 put_task_struct:
 	put_task_struct(p);
-	kfree(tmp_lib_name);
 	return found;
 }