linux-kernel - Re: [PATCH 04/34] drm/i915/gvt: don't override the include path

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Message-ID: <8735ijiouv.fsf@intel.com>
Date:   Mon, 11 Apr 2022 19:09:12 +0300
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Christoph Hellwig <hch@....de>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Zhi Wang <zhi.a.wang@...el.com>
Cc:     Jason Gunthorpe <jgg@...dia.com>, intel-gfx@...ts.freedesktop.org,
        intel-gvt-dev@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 04/34] drm/i915/gvt: don't override the include path

On Mon, 11 Apr 2022, Christoph Hellwig <hch@....de> wrote:
> drivers/gpu/drm/i915/gvt/Makefile is included
> from drivers/gpu/drm/i915/Makefile and thus inherits the normal include
> path relative to drivers/gpu/drm/i915/.  Fix up the gvt-specific trace
> header and just do away with the include path manipulation.
>
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  drivers/gpu/drm/i915/gvt/Makefile | 1 -
>  drivers/gpu/drm/i915/gvt/trace.h  | 2 +-
>  2 files changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
> index ea8324abc784a..4d70f4689479c 100644
> --- a/drivers/gpu/drm/i915/gvt/Makefile
> +++ b/drivers/gpu/drm/i915/gvt/Makefile
> @@ -5,5 +5,4 @@ GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \
>  	execlist.o scheduler.o sched_policy.o mmio_context.o cmd_parser.o debugfs.o \
>  	fb_decoder.o dmabuf.o page_track.o
>  
> -ccflags-y				+= -I $(srctree)/$(src) -I $(srctree)/$(src)/$(GVT_DIR)/
>  i915-y					+= $(addprefix $(GVT_DIR)/, $(GVT_SOURCE))
> diff --git a/drivers/gpu/drm/i915/gvt/trace.h b/drivers/gpu/drm/i915/gvt/trace.h
> index 6d787750d279f..348f57f8301db 100644
> --- a/drivers/gpu/drm/i915/gvt/trace.h
> +++ b/drivers/gpu/drm/i915/gvt/trace.h
> @@ -379,5 +379,5 @@ TRACE_EVENT(render_mmio,
>  #undef TRACE_INCLUDE_PATH
>  #define TRACE_INCLUDE_PATH .
>  #undef TRACE_INCLUDE_FILE
> -#define TRACE_INCLUDE_FILE trace
> +#define TRACE_INCLUDE_FILE gvt/trace

This is not actually correct. Please see my gvt Makefile cleanup [1][2].

BR,
Jani.

[1] https://lore.kernel.org/all/20220331082127.432171-1-jani.nikula@intel.com/
[2] https://lore.kernel.org/all/20220331082127.432171-2-jani.nikula@intel.com/

>  #include <trace/define_trace.h>

-- 
Jani Nikula, Intel Open Source Graphics Center