From 28cbf47bba2f3c799204db083ec418bbb2beb584 Mon Sep 17 00:00:00 2001
From: seanwang1 <seanwang1@lenovo.com>
Date: Thu, 25 Apr 2024 17:08:03 +0800
Subject: [PATCH] ANDROID: GKI: Export css_task_iter_start()

Export css_task_iter_start() and css_task_iter_next() and
css_task_iter_end() inorder to support task iteration in a cgroup in
vendor modules.

Bug: 348564818
Bug: 353112770

Change-Id: Id93963ddd30ab02c7a4d5086f19d15310e4eda14
Signed-off-by: seanwang1 <seanwang1@lenovo.com>
(cherry picked from commit 978f805a2d4b5a0bed9576750152af33f1b4fe45)
(cherry picked from commit 0383c45728a68989b76a7afeb99d6e9e611c99d4)
(cherry picked from commit f68e05cd5b29f241f096c676186002f25803c6a1)
---
 kernel/cgroup/cgroup.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 527b489a4dc2..5c0da25ba3fc 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -5025,6 +5025,7 @@ void css_task_iter_start(struct cgroup_subsys_state *css, unsigned int flags,
 
 	spin_unlock_irqrestore(&css_set_lock, irqflags);
 }
+EXPORT_SYMBOL_GPL(css_task_iter_start);
 
 /**
  * css_task_iter_next - return the next task for the iterator
@@ -5060,6 +5061,7 @@ struct task_struct *css_task_iter_next(struct css_task_iter *it)
 
 	return it->cur_task;
 }
+EXPORT_SYMBOL_GPL(css_task_iter_next);
 
 /**
  * css_task_iter_end - finish task iteration
@@ -5084,6 +5086,7 @@ void css_task_iter_end(struct css_task_iter *it)
 	if (it->cur_task)
 		put_task_struct(it->cur_task);
 }
+EXPORT_SYMBOL_GPL(css_task_iter_end);
 
 static void cgroup_procs_release(struct kernfs_open_file *of)
 {