Date:   Fri, 17 Mar 2023 16:32:29 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     kernel test robot <lkp@intel.com>
Cc:     Michal Hocko <mhocko@kernel.org>,
        Leonardo Bras <leobras@redhat.com>,
        oe-kbuild-all@lists.linux.dev,
        Linux Memory Management List <linux-mm@kvack.org>,
        Frederic Weisbecker <fweisbecker@suse.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Marcelo Tosatti <mtosatti@redhat.com>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        Shakeel Butt <shakeelb@google.com>,
        Muchun Song <muchun.song@linux.dev>,
        LKML <linux-kernel@vger.kernel.org>,
        Michal Hocko <mhocko@suse.com>
Subject: Re: [PATCH 2/2] memcg: do not drain charge pcp caches on remote
 isolated cpus
Message-Id: <20230317163229.51431ba28ba82c70eaa55d81@linux-foundation.org>
In-Reply-To: <202303180617.7E3aIlHf-lkp@intel.com>
References: <20230317134448.11082-3-mhocko@kernel.org>
        <202303180617.7E3aIlHf-lkp@intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Precedence: bulk

On Sat, 18 Mar 2023 06:22:40 +0800 kernel test robot <lkp@intel.com> 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>
_