Revert "proc: Don't let Google Camera run in the background"

I won't modify the code and include every gcam package naming.

This reverts commit 092fafb.

fs/proc/base.c

@@ -104,21 +104,6 @@
 
 #include "../../lib/kstrtox.h"
 
-struct task_kill_info {
-	struct task_struct *task;
-	struct work_struct work;
-};
-
-static void proc_kill_task(struct work_struct *work)
-{
-	struct task_kill_info *kinfo = container_of(work, typeof(*kinfo), work);
-	struct task_struct *task = kinfo->task;
-
-	send_sig(SIGKILL, task, 0);
-	put_task_struct(task);
-	kfree(kinfo);
-}
-
 /* NOTE:
  *	Implementing inode permission operations in /proc is almost
  *	certainly an error.  Permission checks need to happen during
@@ -1022,7 +1007,6 @@ static int __set_oom_adj(struct file *file, int oom_adj, bool legacy)
 	static DEFINE_MUTEX(oom_adj_mutex);
 	struct mm_struct *mm = NULL;
 	struct task_struct *task;
-	char task_comm[TASK_COMM_LEN];
 	int err = 0;
 
 	task = get_proc_task(file_inode(file));
@@ -1072,8 +1056,6 @@ static int __set_oom_adj(struct file *file, int oom_adj, bool legacy)
 	if (!legacy && has_capability_noaudit(current, CAP_SYS_RESOURCE))
 		task->signal->oom_score_adj_min = (short)oom_adj;
 	trace_oom_score_adj_update(task);
-	if (oom_adj >= 700)
-		strncpy(task_comm, task->comm, TASK_COMM_LEN);
 
 	if (mm) {
 		struct task_struct *p;
@@ -1101,20 +1083,6 @@ static int __set_oom_adj(struct file *file, int oom_adj, bool legacy)
 err_unlock:
 	mutex_unlock(&oom_adj_mutex);
 	put_task_struct(task);
-	/* These apps burn through CPU in the background. Don't let them. */
-	if (!err && oom_adj >= 700) {
-		if (!strcmp(task_comm, "id.GoogleCamera")) {
-			struct task_kill_info *kinfo;
-
-			kinfo = kmalloc(sizeof(*kinfo), GFP_KERNEL);
-			if (kinfo) {
-				get_task_struct(task);
-				kinfo->task = task;
-				INIT_WORK(&kinfo->work, proc_kill_task);
-				schedule_work(&kinfo->work);
-			}
-		}
-	}
 	return err;
 }