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Commit 92daaf50 authored by Pavankumar Kondeti's avatar Pavankumar Kondeti
Browse files

sched: Improve the scheduler 



This change is for general scheduler improvements.

Change-Id: I3842c589378ce5bcc54e4c35ebcbfbdfa1f88a8f
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
parent 18b20998

kernel/sched/core.c

+16 −3
Original line number Diff line number Diff line
@@ -4917,8 +4917,10 @@ 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;
@@ -4926,11 +4928,16 @@ 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;

	}
@@ -4950,10 +4957,15 @@ bool is_sched_lib_based_app(pid_t pid) 
			if (IS_ERR(name))

				goto release_sem;



			if (strnstr(name, sched_lib_name,

			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,

					strnlen(name, LIB_PATH_LENGTH))) {

					found = true;

				break;

					goto release_sem;

				}

			}

		}

	}
@@ -4963,6 +4975,7 @@ bool is_sched_lib_based_app(pid_t pid) 
	mmput(mm);

put_task_struct:

	put_task_struct(p);

	kfree(tmp_lib_name);

	return found;

}