From e356cae9693c1621345e9da93f93a76f1dc87c33 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com>
Date: Wed, 22 Mar 2023 12:32:51 -0700
Subject: [PATCH] ANDROID: Export kthread_set_per_cpu
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kthread_create_on_cpu no longer marks the created thread as a per cpu
thread, so the affinity might get lost on suspend or other hotplug
events.

Export kthread_set_per_cpu so a module that needs a kthread to stay on a
specific cpu can accomplish that.

Bug: 274202992
Change-Id: Iaafc12f93f341f9e0586cb051b7f1c941f140866
Signed-off-by: Arve Hjønnevåg <arve@android.com>
(cherry picked from commit 4fdc7e4658212c096bd19fe7196296955942f7e5)
---
 kernel/kthread.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/kthread.c b/kernel/kthread.c
index 261021050f6c..b795a8c1de96 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -601,6 +601,7 @@ void kthread_set_per_cpu(struct task_struct *k, int cpu)
 	kthread->cpu = cpu;
 	set_bit(KTHREAD_IS_PER_CPU, &kthread->flags);
 }
+EXPORT_SYMBOL_GPL(kthread_set_per_cpu);
 
 bool kthread_is_per_cpu(struct task_struct *p)
 {