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Date:   Mon, 13 May 2019 11:26:27 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Cc:     Song Liu <songliubraving@...com>,
        Alexei Starovoitov <ast@...nel.org>,
        Networking <netdev@...r.kernel.org>, Yonghong Song <yhs@...com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Martin KaFai Lau <kafai@...com>, bpf@...r.kernel.org,
        Daniel Borkmann <daniel@...earbox.net>
Subject: Re: [PATCH v2] samples: guard sub-directories with CONFIG options

On Thu, May 9, 2019 at 10:01 AM Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:
>
> Do not descend to sub-directories when unneeded.
>
> I used subdir-$(CONFIG_...) for hidraw, seccomp, and vfs because
> they only contain host programs.
>
> While we are here, let's add SPDX License tag, and sort the directories
> alphabetically.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---
>
> Changes in v2:
>   - Rebased on mainline

Applied to linux-kbuild.



>  samples/Makefile         | 24 ++++++++++++++++++++----
>  samples/seccomp/Makefile |  2 +-
>  samples/vfs/Makefile     |  2 +-
>  3 files changed, 22 insertions(+), 6 deletions(-)
>
> diff --git a/samples/Makefile b/samples/Makefile
> index 8e096e0..debf892 100644
> --- a/samples/Makefile
> +++ b/samples/Makefile
> @@ -1,6 +1,22 @@
> +# SPDX-License-Identifier: GPL-2.0
>  # Makefile for Linux samples code
>
> -obj-y                  += kobject/ kprobes/ trace_events/ livepatch/ \
> -                          hw_breakpoint/ kfifo/ kdb/ hidraw/ rpmsg/ seccomp/ \
> -                          configfs/ connector/ v4l/ trace_printk/ \
> -                          vfio-mdev/ vfs/ qmi/ binderfs/ pidfd/
> +obj-$(CONFIG_SAMPLE_ANDROID_BINDERFS)  += binderfs/
> +obj-$(CONFIG_SAMPLE_CONFIGFS)          += configfs/
> +obj-$(CONFIG_SAMPLE_CONNECTOR)         += connector/
> +subdir-y                               += hidraw
> +obj-$(CONFIG_SAMPLE_HW_BREAKPOINT)     += hw_breakpoint/
> +obj-$(CONFIG_SAMPLE_KDB)               += kdb/
> +obj-$(CONFIG_SAMPLE_KFIFO)             += kfifo/
> +obj-$(CONFIG_SAMPLE_KOBJECT)           += kobject/
> +obj-$(CONFIG_SAMPLE_KPROBES)           += kprobes/
> +obj-$(CONFIG_SAMPLE_LIVEPATCH)         += livepatch/
> +subdir-y                               += pidfd
> +obj-$(CONFIG_SAMPLE_QMI_CLIENT)                += qmi/
> +obj-$(CONFIG_SAMPLE_RPMSG_CLIENT)      += rpmsg/
> +subdir-$(CONFIG_SAMPLE_SECCOMP)                += seccomp
> +obj-$(CONFIG_SAMPLE_TRACE_EVENTS)      += trace_events/
> +obj-$(CONFIG_SAMPLE_TRACE_PRINTK)      += trace_printk/
> +obj-$(CONFIG_VIDEO_PCI_SKELETON)       += v4l/
> +obj-y                                  += vfio-mdev/
> +subdir-$(CONFIG_SAMPLE_VFS)            += vfs
> diff --git a/samples/seccomp/Makefile b/samples/seccomp/Makefile
> index 00e0b5e..009775b 100644
> --- a/samples/seccomp/Makefile
> +++ b/samples/seccomp/Makefile
> @@ -1,6 +1,6 @@
>  # SPDX-License-Identifier: GPL-2.0
>  ifndef CROSS_COMPILE
> -hostprogs-$(CONFIG_SAMPLE_SECCOMP) := bpf-fancy dropper bpf-direct user-trap
> +hostprogs-y := bpf-fancy dropper bpf-direct user-trap
>
>  HOSTCFLAGS_bpf-fancy.o += -I$(objtree)/usr/include
>  HOSTCFLAGS_bpf-fancy.o += -idirafter $(objtree)/include
> diff --git a/samples/vfs/Makefile b/samples/vfs/Makefile
> index 4ac9690..a3e4ffd 100644
> --- a/samples/vfs/Makefile
> +++ b/samples/vfs/Makefile
> @@ -1,5 +1,5 @@
>  # List of programs to build
> -hostprogs-$(CONFIG_SAMPLE_VFS) := \
> +hostprogs-y := \
>         test-fsmount \
>         test-statx
>
> --
> 2.7.4
>


-- 
Best Regards
Masahiro Yamada

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