Re: [PATCH 2/2] memcg: do not drain charge pcp caches on remote isolated cpus

[Andrew Morton]

On Sat, 18 Mar 2023 06:22:40 +0800 kernel test robot <lkp@xxxxxxxxx> wrote:

>    mm/memcontrol.c: In function 'drain_all_stock':
> >> mm/memcontrol.c:2369:35: error: implicit declaration of function 'cpu_is_isolated' [-Werror=implicit-function-declaration]
>     2369 |                         else if (!cpu_is_isolated(cpu))
>          |                                   ^~~~~~~~~~~~~~~

Thanks.

--- a/mm/memcontrol.c~memcg-do-not-drain-charge-pcp-caches-on-remote-isolated-cpus-fix
+++ a/mm/memcontrol.c
@@ -63,6 +63,7 @@
 #include <linux/resume_user_mode.h>
 #include <linux/psi.h>
 #include <linux/seq_buf.h>
+#include <linux/sched/isolation.h>
 #include "internal.h"
 #include <net/sock.h>
 #include <net/ip.h>
_