linux-kernel - Re: [PATCH 2/2] drm/i915: remove gvt/Makefile

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Message-ID: <87h7xsgw3r.fsf@intel.com>
Date:   Fri, 10 Apr 2020 00:58:16 +0300
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Masahiro Yamada <masahiroy@...nel.org>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        intel-gfx@...ts.freedesktop.org
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Zhi Wang <zhi.a.wang@...el.com>,
        dri-devel@...ts.freedesktop.org,
        intel-gvt-dev@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] drm/i915: remove gvt/Makefile

On Fri, 10 Apr 2020, Masahiro Yamada <masahiroy@...nel.org> wrote:
> Including subdirectory Makefile from the driver main Makefile does not
> buy us much because this is not real isolation.

The isolation it does buy us is that gvt/ subdirectory is developed and
maintained on a separate mailing list and separate git repo. I think at
some point there were plans to make it an actual module too.

So while you could quip about Conway's law here, I think it might be
better to keep this as it is.

Zhenyu, Zhi, what do you think?


BR,
Jani.


>
> Having a single Makefile at the top of the module is clearer, and
> it is what this driver almost does.
>
> Move all gvt objects to the i915 main Makefile.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
>
>  drivers/gpu/drm/i915/Makefile     | 28 ++++++++++++++++++++++++----
>  drivers/gpu/drm/i915/gvt/Makefile |  8 --------
>  2 files changed, 24 insertions(+), 12 deletions(-)
>  delete mode 100644 drivers/gpu/drm/i915/gvt/Makefile
>
> diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
> index 6cd1f6253814..74e965882a98 100644
> --- a/drivers/gpu/drm/i915/Makefile
> +++ b/drivers/gpu/drm/i915/Makefile
> @@ -275,10 +275,30 @@ i915-$(CONFIG_DRM_I915_SELFTEST) += \
>  # virtual gpu code
>  i915-y += i915_vgpu.o
>  
> -ifeq ($(CONFIG_DRM_I915_GVT),y)
> -i915-y += intel_gvt.o
> -include $(src)/gvt/Makefile
> -endif
> +i915-$(CONFIG_DRM_I915_GVT) += \
> +	intel_gvt.o \
> +	gvt/gvt.o \
> +	gvt/aperture_gm.o \
> +	gvt/handlers.o \
> +	gvt/vgpu.o \
> +	gvt/trace_points.o \
> +	gvt/firmware.o \
> +	gvt/interrupt.o \
> +	gvt/gtt.o \
> +	gvt/cfg_space.o \
> +	gvt/opregion.o \
> +	gvt/mmio.o \
> +	gvt/display.o \
> +	gvt/edid.o \
> +	gvt/execlist.o \
> +	gvt/scheduler.o \
> +	gvt/sched_policy.o \
> +	gvt/mmio_context.o \
> +	gvt/cmd_parser.o \
> +	gvt/debugfs.o \
> +	gvt/fb_decoder.o \
> +	gvt/dmabuf.o \
> +	gvt/page_track.o
>  
>  obj-$(CONFIG_DRM_I915) += i915.o
>  obj-$(CONFIG_DRM_I915_GVT_KVMGT) += gvt/kvmgt.o
> diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
> deleted file mode 100644
> index 4d70f4689479..000000000000
> --- a/drivers/gpu/drm/i915/gvt/Makefile
> +++ /dev/null
> @@ -1,8 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0
> -GVT_DIR := gvt
> -GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \
> -	interrupt.o gtt.o cfg_space.o opregion.o mmio.o display.o edid.o \
> -	execlist.o scheduler.o sched_policy.o mmio_context.o cmd_parser.o debugfs.o \
> -	fb_decoder.o dmabuf.o page_track.o
> -
> -i915-y					+= $(addprefix $(GVT_DIR)/, $(GVT_SOURCE))

-- 
Jani Nikula, Intel Open Source Graphics Center