linux-kernel - Re: [PATCH v2 -next 01/11] cgroup/cpuset: introduce cpuset-v1.c

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Message-ID: <53f17d71-c710-4720-ada7-8b81afc0c5e1@redhat.com>
Date: Mon, 26 Aug 2024 15:07:15 -0400
From: Waiman Long <longman@...hat.com>
To: Chen Ridong <chenridong@...wei.com>, tj@...nel.org,
 lizefan.x@...edance.com, hannes@...xchg.org, adityakali@...gle.com,
 sergeh@...nel.org, mkoutny@...e.com
Cc: cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
 chenridong@...weicloud.com
Subject: Re: [PATCH v2 -next 01/11] cgroup/cpuset: introduce cpuset-v1.c

On 8/26/24 09:26, Chen Ridong wrote:
> This patch introduces the cgroup/cpuset-v1.c source file which will be
> used for all legacy (cgroup v1) cpuset cgroup code. It also introduces
> cgroup/cpuset-internal.h to keep declarations shared between
> cgroup/cpuset.c and cpuset/cpuset-v1.c.
>
> As of now, let's compile it if CONFIG_CPUSET is set. Later on it can be
> switched to use a separate config option, so that the legacy code won't be
> compiled if not required.
>
> Signed-off-by: Chen Ridong <chenridong@...wei.com>
> ---
>   MAINTAINERS                     | 2 ++
>   kernel/cgroup/Makefile          | 2 +-
>   kernel/cgroup/cpuset-internal.h | 7 +++++++
>   kernel/cgroup/cpuset-v1.c       | 4 ++++
>   4 files changed, 14 insertions(+), 1 deletion(-)
>   create mode 100644 kernel/cgroup/cpuset-internal.h
>   create mode 100644 kernel/cgroup/cpuset-v1.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 82e3924816d2..3b5ec1cafd95 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -5698,6 +5698,8 @@ S:	Maintained
>   T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git
>   F:	Documentation/admin-guide/cgroup-v1/cpusets.rst
>   F:	include/linux/cpuset.h
> +F:	kernel/cgroup/cpuset-internal.h
> +F:	kernel/cgroup/cpuset-v1.c
>   F:	kernel/cgroup/cpuset.c
>   F:	tools/testing/selftests/cgroup/test_cpuset.c
>   F:	tools/testing/selftests/cgroup/test_cpuset_prs.sh
> diff --git a/kernel/cgroup/Makefile b/kernel/cgroup/Makefile
> index 12f8457ad1f9..005ac4c675cb 100644
> --- a/kernel/cgroup/Makefile
> +++ b/kernel/cgroup/Makefile
> @@ -4,6 +4,6 @@ obj-y := cgroup.o rstat.o namespace.o cgroup-v1.o freezer.o
>   obj-$(CONFIG_CGROUP_FREEZER) += legacy_freezer.o
>   obj-$(CONFIG_CGROUP_PIDS) += pids.o
>   obj-$(CONFIG_CGROUP_RDMA) += rdma.o
> -obj-$(CONFIG_CPUSETS) += cpuset.o
> +obj-$(CONFIG_CPUSETS) += cpuset.o cpuset-v1.o
>   obj-$(CONFIG_CGROUP_MISC) += misc.o
>   obj-$(CONFIG_CGROUP_DEBUG) += debug.o
> diff --git a/kernel/cgroup/cpuset-internal.h b/kernel/cgroup/cpuset-internal.h
> new file mode 100644
> index 000000000000..6605be417e32
> --- /dev/null
> +++ b/kernel/cgroup/cpuset-internal.h
> @@ -0,0 +1,7 @@
> +/* SPDX-License-Identifier: GPL-2.0-or-later */
> +
> +#ifndef __CPUSET_INTERNAL_H
> +#define __CPUSET_INTERNAL_H
> +
> +#endif /* __CPUSET_INTERNAL_H */
> +
> diff --git a/kernel/cgroup/cpuset-v1.c b/kernel/cgroup/cpuset-v1.c
> new file mode 100644
> index 000000000000..ae166eb4f75d
> --- /dev/null
> +++ b/kernel/cgroup/cpuset-v1.c
> @@ -0,0 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +
> +#include "cpuset-internal.h"
> +

Don't leave a blank line at the end of a file. You will get the 
following error when applying the patch.

0001-cgroup_cpuset-introduce-cpuset-v1.c.patch:70: new blank line at EOF.

All your patches except the last one have this problem.

Cheers,
Longman