in-kernel DRM tree move around....

in-kernel DRM tree move around....

[Dave Airlie]

Hi,

So I've been growing more annoyed with the current layout of the drm
tree in the kernel,

a) it lives under char.
b) everything in one directory.
c) header files in one directory.
d) no header files exposed to userspace.

http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68

is a proposal to create drivers/gpu/drm, (I may move AGP in there as
well later). It also creates per-driver subdirs.

This to me solves the a-d problems.

There is also an out-of-tree kernel drm which I'll probably give some
more thought later.

Dave.

Re: in-kernel DRM tree move around....

[Sam Ravnborg]

On Thu, May 29, 2008 at 10:46:22AM +1000, Dave Airlie wrote:
> Hi,
> 
> So I've been growing more annoyed with the current layout of the drm
> tree in the kernel,
> 
> a) it lives under char.
> b) everything in one directory.
> c) header files in one directory.
> d) no header files exposed to userspace.
> 
> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
> 
> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
> well later). It also creates per-driver subdirs.

Like it.
> 
> This to me solves the a-d problems.
> 
> There is also an out-of-tree kernel drm which I'll probably give some
> more thought later.

Makefie bits:
5 EXTRA_CFLAGS = -Iinclude/drm
Use ccflags-y :=  -Iinclude/drm
I assume this is a temporary workaround and you plan to fix
up all includes to use "#include <drm/fo.h>"

6 drm-objs    :=  drm_auth.o drm_bufs.o drm_context.o drm_dma.o drm_drawable.o \
7                 drm_drv.o drm_fops.o drm_ioctl.o drm_irq.o \
8                 drm_lock.o drm_memory.o drm_proc.o drm_stub.o drm_vm.o \
9                 drm_agpsupport.o drm_scatter.o ati_pcigart.o drm_pci.o \
10                 drm_sysfs.o drm_hashtab.o drm_sman.o drm_mm.o

Use drm-y := ....

11
12 ifeq ($(CONFIG_COMPAT),y)
13 drm-objs    += drm_ioc32.o
14 endif
So you can do:
drm-$(CONFIG_COMPAT) += drm_ioc32.o

Take the above as general input for all your Makefiles.

Re: in-kernel DRM tree move around....

[Dave Airlie]

On Thu, May 29, 2008 at 2:23 PM, Sam Ravnborg <sam@ravnborg.org> wrote:
> On Thu, May 29, 2008 at 10:46:22AM +1000, Dave Airlie wrote:
>> Hi,
>>
>> So I've been growing more annoyed with the current layout of the drm
>> tree in the kernel,
>>
>> a) it lives under char.
>> b) everything in one directory.
>> c) header files in one directory.
>> d) no header files exposed to userspace.
>>
>> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
>>
>> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
>> well later). It also creates per-driver subdirs.
>
> Like it.
>>
>> This to me solves the a-d problems.
>>
>> There is also an out-of-tree kernel drm which I'll probably give some
>> more thought later.
>
> Makefie bits:
> 5 EXTRA_CFLAGS = -Iinclude/drm
> Use ccflags-y :=  -Iinclude/drm
> I assume this is a temporary workaround and you plan to fix
> up all includes to use "#include <drm/fo.h>"

I'd rather not do that due the fact that a lot of these files are
shared with other OSes upstream and I'd rather not diverge too far but
maybe later.

>
> 6 drm-objs    :=  drm_auth.o drm_bufs.o drm_context.o drm_dma.o drm_drawable.o \
> 7                 drm_drv.o drm_fops.o drm_ioctl.o drm_irq.o \
> 8                 drm_lock.o drm_memory.o drm_proc.o drm_stub.o drm_vm.o \
> 9                 drm_agpsupport.o drm_scatter.o ati_pcigart.o drm_pci.o \
> 10                 drm_sysfs.o drm_hashtab.o drm_sman.o drm_mm.o
>
> Use drm-y := ....

cool.. I just re-used the old Makefiles so I'll fix that up in the new ones.

>
> 11
> 12 ifeq ($(CONFIG_COMPAT),y)
> 13 drm-objs    += drm_ioc32.o
> 14 endif
> So you can do:
> drm-$(CONFIG_COMPAT) += drm_ioc32.o
>
> Take the above as general input for all your Makefiles.

Also came from just reusing the old ones, will fix that bit up.

Dave.

Re: in-kernel DRM tree move around....

[Sam Ravnborg]

> >
> > Makefie bits:
> > 5 EXTRA_CFLAGS = -Iinclude/drm
> > Use ccflags-y :=  -Iinclude/drm
> > I assume this is a temporary workaround and you plan to fix
> > up all includes to use "#include <drm/fo.h>"
> 
> I'd rather not do that due the fact that a lot of these files are
> shared with other OSes upstream and I'd rather not diverge too far but
> maybe later.
Understood.

To be sure you did not miss it...
At least change EXTRA_CFLAGS to ccflags-y.

	Sam

Re: in-kernel DRM tree move around....

[Jan Engelhardt]

On Thursday 2008-05-29 06:23, Sam Ravnborg wrote:
>On Thu, May 29, 2008 at 10:46:22AM +1000, Dave Airlie wrote:
>> Hi,
>> 
>> So I've been growing more annoyed with the current layout of the drm
>> tree in the kernel,
>> 
>> a) it lives under char.
>> b) everything in one directory.
>> c) header files in one directory.
>> d) no header files exposed to userspace.
>> 
>> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
>> 
>> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
>> well later). It also creates per-driver subdirs.
>
>Like it.

You have Makefile content in a file called "Kconfig":


diff --git a/drivers/char/drm/Kconfig b/drivers/gpu/drm/Kconfig
similarity index 100%
rename from drivers/char/drm/Kconfig
drivers/gpu/drm/Kconfig
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
new file mode 100644 (file)
index
0000000000000000000000000000000000000000..3f50d8fb25b915d66aef74b175e49fbb1964d6b1
--- a/drivers/char/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -0,0 +1,27 @@
+#
+# Makefile for the drm device driver.  This driver provides support for the
+# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
+
+EXTRA_CFLAGS = -Iinclude/drm
+drm-objs    := drm_auth.o drm_bufs.o drm_context.o drm_dma.o drm_drawable.o \
+               drm_drv.o drm_fops.o drm_ioctl.o drm_irq.o \
+               drm_lock.o drm_memory.o drm_proc.o drm_stub.o drm_vm.o \
+               drm_agpsupport.o drm_scatter.o ati_pcigart.o drm_pci.o \
+               drm_sysfs.o drm_hashtab.o drm_sman.o drm_mm.o
+
+ifeq ($(CONFIG_COMPAT),y)
+drm-objs    += drm_ioc32.o
+endif
+
+obj-$(CONFIG_DRM)      += drm.o
+obj-$(CONFIG_DRM_TDFX) += tdfx/
+obj-$(CONFIG_DRM_R128) += r128/
+obj-$(CONFIG_DRM_RADEON)+= radeon/
+obj-$(CONFIG_DRM_MGA)  += mga/
+obj-$(CONFIG_DRM_I810) += i810/
+obj-$(CONFIG_DRM_I830) += i830/
+obj-$(CONFIG_DRM_I915)  += i915/
+obj-$(CONFIG_DRM_SIS)   += sis/
+obj-$(CONFIG_DRM_SAVAGE)+= savage/
+obj-$(CONFIG_DRM_VIA)  +=via/
+

In fact, since this happened for lots of files, I pulled the repo
with git, and like I suspected, it seems to be a gitweb issue.

Re: in-kernel DRM tree move around....

[Alexander van Heukelum]

On Thu, 29 May 2008 10:46:22 +1000, "Dave Airlie" <airlied@gmail.com>
said:
> Hi,
> 
> So I've been growing more annoyed with the current layout of the drm
> tree in the kernel,
> 
> a) it lives under char.
> b) everything in one directory.
> c) header files in one directory.
> d) no header files exposed to userspace.
> 
> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
> 
> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
> well later). It also creates per-driver subdirs.

Looks like a lot more suitable place! I just wonder if drivers/video/drm
would be even more logical?

Greetings,
    Alexander

> This to me solves the a-d problems.
> 
> There is also an out-of-tree kernel drm which I'll probably give some
> more thought later.
> 
> Dave.
-- 
  Alexander van Heukelum
  heukelum@fastmail.fm

-- 
http://www.fastmail.fm - Does exactly what it says on the tin

Re: in-kernel DRM tree move around....

[Alan Cox]

On Thu, 29 May 2008 11:05:08 +0200
"Alexander van Heukelum" <heukelum@fastmail.fm> wrote:

> On Thu, 29 May 2008 10:46:22 +1000, "Dave Airlie" <airlied@gmail.com>
> said:
> > Hi,
> > 
> > So I've been growing more annoyed with the current layout of the drm
> > tree in the kernel,
> > 
> > a) it lives under char.
> > b) everything in one directory.
> > c) header files in one directory.
> > d) no header files exposed to userspace.
> > 
> > http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
> > 
> > is a proposal to create drivers/gpu/drm, (I may move AGP in there as
> > well later). It also creates per-driver subdirs.
> 
> Looks like a lot more suitable place! I just wonder if drivers/video/drm
> would be even more logical?

I think gpu is better - we are seeing various GPU as CPU accelerator
toolkits appearing and assuming the AMD one ends up open source we will
end up with gpu/something that isn't video.

Remember GPU = Grahi^WGeneric Processing Unit ;)

Alan

Re: in-kernel DRM tree move around....

[David Woodhouse]

On Thu, 2008-05-29 at 10:46 +1000, Dave Airlie wrote:
> Hi,
> 
> So I've been growing more annoyed with the current layout of the drm
> tree in the kernel,
> 
> a) it lives under char.
> b) everything in one directory.
> c) header files in one directory.
> d) no header files exposed to userspace.
> 
> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
> 
> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
> well later). It also creates per-driver subdirs.

Looks sane from the header export POV. Passes headers_check and doesn't
add any more instances of CONFIG_xxx visible to userspace (I'm coming
after those, soon).

-- 
dwmw2

Re: in-kernel DRM tree move around....

[Eric Anholt]

[-- Attachment #1: Type: text/plain, Size: 1787 bytes --]

On Thu, 2008-05-29 at 10:46 +1000, Dave Airlie wrote:
> Hi,
> 
> So I've been growing more annoyed with the current layout of the drm
> tree in the kernel,
> 
> a) it lives under char.
> b) everything in one directory.
> c) header files in one directory.
> d) no header files exposed to userspace.
> 
> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
> 
> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
> well later). It also creates per-driver subdirs.
> 
> This to me solves the a-d problems.
> 
> There is also an out-of-tree kernel drm which I'll probably give some
> more thought later.

I like it.

For upstream DRM, my first thought was something like:

drm/src/i915/i915_*.[ch]
drm/src/r128/r128_*.[ch]
drm/src/drm.h
drm/src/bsd/drm_*.[ch]
drm/src/bsd/Makefile
drm/src/bsd/i915/Makefile
drm/src/bsd/r128/Makefile
drm/src/linux/drm_*.[ch]
drm/src/linux/Makefile

Get rid of the -core absurdity, and move the shared code to top-level of
the kernel instead of alongside other kernel code.

But maybe nicer for merging on both of our parts would be:

drm/linux/Makefile
drm/linux/drm*.[ch]
drm/linux/i915/Makefile
drm/linux/i915/i915_*.[ch]
drm/linux/i915/Makefile
drm/linux/r128/r128_*.[ch]
drm/bsd/drm.h -> ../linux/drm.h
drm/bsd/drm*.[ch]
drm/bsd/Makefile
drm/bsd/i915/Makefile
drm/bsd/i915/i915_drv.c
drm/bsd/i915/i915_*.[ch] -> ../../linux/i915/i915_*.[ch]
drm/bsd/r128/Makefile
drm/bsd/r128/r128_drv.c
drm/bsd/r128/r128_*.[ch] -> ../../linux/r128/r128_*.[ch]

-- 
Eric Anholt                             anholt@FreeBSD.org
eric@anholt.net                         eric.anholt@intel.com


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Re: in-kernel DRM tree move around....

[Dave Airlie]

On Thu, May 29, 2008 at 9:02 PM, David Woodhouse <dwmw2@infradead.org> wrote:
> On Thu, 2008-05-29 at 10:46 +1000, Dave Airlie wrote:
>> Hi,
>>
>> So I've been growing more annoyed with the current layout of the drm
>> tree in the kernel,
>>
>> a) it lives under char.
>> b) everything in one directory.
>> c) header files in one directory.
>> d) no header files exposed to userspace.
>>
>> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
>>
>> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
>> well later). It also creates per-driver subdirs.
>
> Looks sane from the header export POV. Passes headers_check and doesn't
> add any more instances of CONFIG_xxx visible to userspace (I'm coming
> after those, soon).
>

So assuming I fixed up the kbuild issues, any ideas on when it would
be a good plan to upstream this sorta major movement.

Not many DRM patches don't come via me, and I can fix up the ones that
do before I merge them.

Linus? any ideas on when you would prefer to take a tree like this?
start of rc1?

Dave.

Re: in-kernel DRM tree move around....

[Jesse Barnes]

On Thursday, May 29, 2008 11:26 pm Dave Airlie wrote:
> On Thu, May 29, 2008 at 9:02 PM, David Woodhouse <dwmw2@infradead.org> 
wrote:
> > On Thu, 2008-05-29 at 10:46 +1000, Dave Airlie wrote:
> >> Hi,
> >>
> >> So I've been growing more annoyed with the current layout of the drm
> >> tree in the kernel,
> >>
> >> a) it lives under char.
> >> b) everything in one directory.
> >> c) header files in one directory.
> >> d) no header files exposed to userspace.
> >>
> >> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdi
> >>ff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
> >>
> >> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
> >> well later). It also creates per-driver subdirs.
> >
> > Looks sane from the header export POV. Passes headers_check and doesn't
> > add any more instances of CONFIG_xxx visible to userspace (I'm coming
> > after those, soon).
>
> So assuming I fixed up the kbuild issues, any ideas on when it would
> be a good plan to upstream this sorta major movement.
>
> Not many DRM patches don't come via me, and I can fix up the ones that
> do before I merge them.
>
> Linus? any ideas on when you would prefer to take a tree like this?
> start of rc1?

Yes please, as soon as the merge window opens.  Now if we could just convince 
you to host a full kernel tree for DRM development, with a separate, 
symlinked BSD dir at the top level, we'd be all set. :)

Jesse

Re: in-kernel DRM tree move around....

[Pavel Machek]

On Thu 2008-05-29 10:46:22, Dave Airlie wrote:
> Hi,
> 
> So I've been growing more annoyed with the current layout of the drm
> tree in the kernel,
> 
> a) it lives under char.
> b) everything in one directory.
> c) header files in one directory.
> d) no header files exposed to userspace.
> 
> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=7df9a948d0f849466e3de259cccb49bc54cbad68
> 
> is a proposal to create drivers/gpu/drm, (I may move AGP in there as
> well later). It also creates per-driver subdirs.

I'm unsure about agp... drivers/char/agp/*amd64* seems to contain gart/iommu
stuff that is shared by whole kernel...

							Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html