From: Rob Clark <[email protected]>
The DEFINE_DRM_GEM_FOPS() helper is a bit limiting if a driver wants to
provide additional file ops, like show_fdinfo().
v2: Split out DRM_GEM_FOPS instead of making DEFINE_DRM_GEM_FOPS
varardic
v3: nits
Signed-off-by: Rob Clark <[email protected]>
Acked-by: Thomas Zimmermann <[email protected]>
---
include/drm/drm_gem.h | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index 9d7c61a122dc..87cffc9efa85 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -314,6 +314,23 @@ struct drm_gem_object {
const struct drm_gem_object_funcs *funcs;
};
+/**
+ * DRM_GEM_FOPS - Default drm GEM file operations
+ *
+ * This macro provides a shorthand for setting the GEM file ops in the
+ * &file_operations structure. If all you need are the default ops, use
+ * DEFINE_DRM_GEM_FOPS instead.
+ */
+#define DRM_GEM_FOPS \
+ .open = drm_open,\
+ .release = drm_release,\
+ .unlocked_ioctl = drm_ioctl,\
+ .compat_ioctl = drm_compat_ioctl,\
+ .poll = drm_poll,\
+ .read = drm_read,\
+ .llseek = noop_llseek,\
+ .mmap = drm_gem_mmap
+
/**
* DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM drivers
* @name: name for the generated structure
@@ -330,14 +347,7 @@ struct drm_gem_object {
#define DEFINE_DRM_GEM_FOPS(name) \
static const struct file_operations name = {\
.owner = THIS_MODULE,\
- .open = drm_open,\
- .release = drm_release,\
- .unlocked_ioctl = drm_ioctl,\
- .compat_ioctl = drm_compat_ioctl,\
- .poll = drm_poll,\
- .read = drm_read,\
- .llseek = noop_llseek,\
- .mmap = drm_gem_mmap,\
+ DRM_GEM_FOPS,\
}
void drm_gem_object_release(struct drm_gem_object *obj);
--
2.36.1
On 09/06/2022 20:42, Rob Clark wrote:
> From: Rob Clark <[email protected]>
>
> The DEFINE_DRM_GEM_FOPS() helper is a bit limiting if a driver wants to
> provide additional file ops, like show_fdinfo().
>
> v2: Split out DRM_GEM_FOPS instead of making DEFINE_DRM_GEM_FOPS
> varardic
> v3: nits
>
> Signed-off-by: Rob Clark <[email protected]>
> Acked-by: Thomas Zimmermann <[email protected]>
I suspect that with Tomas's ack we can pick this through the drm/msm. Is
this correct? (I'll then pick it for the msm-lumag).
> ---
> include/drm/drm_gem.h | 26 ++++++++++++++++++--------
> 1 file changed, 18 insertions(+), 8 deletions(-)
>
> diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
> index 9d7c61a122dc..87cffc9efa85 100644
> --- a/include/drm/drm_gem.h
> +++ b/include/drm/drm_gem.h
> @@ -314,6 +314,23 @@ struct drm_gem_object {
> const struct drm_gem_object_funcs *funcs;
> };
>
> +/**
> + * DRM_GEM_FOPS - Default drm GEM file operations
> + *
> + * This macro provides a shorthand for setting the GEM file ops in the
> + * &file_operations structure. If all you need are the default ops, use
> + * DEFINE_DRM_GEM_FOPS instead.
> + */
> +#define DRM_GEM_FOPS \
> + .open = drm_open,\
> + .release = drm_release,\
> + .unlocked_ioctl = drm_ioctl,\
> + .compat_ioctl = drm_compat_ioctl,\
> + .poll = drm_poll,\
> + .read = drm_read,\
> + .llseek = noop_llseek,\
> + .mmap = drm_gem_mmap
> +
> /**
> * DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM drivers
> * @name: name for the generated structure
> @@ -330,14 +347,7 @@ struct drm_gem_object {
> #define DEFINE_DRM_GEM_FOPS(name) \
> static const struct file_operations name = {\
> .owner = THIS_MODULE,\
> - .open = drm_open,\
> - .release = drm_release,\
> - .unlocked_ioctl = drm_ioctl,\
> - .compat_ioctl = drm_compat_ioctl,\
> - .poll = drm_poll,\
> - .read = drm_read,\
> - .llseek = noop_llseek,\
> - .mmap = drm_gem_mmap,\
> + DRM_GEM_FOPS,\
> }
>
> void drm_gem_object_release(struct drm_gem_object *obj);
--
With best wishes
Dmitry
Am 15.06.22 um 14:45 schrieb Dmitry Baryshkov:
> On 09/06/2022 20:42, Rob Clark wrote:
>> From: Rob Clark <[email protected]>
>>
>> The DEFINE_DRM_GEM_FOPS() helper is a bit limiting if a driver wants to
>> provide additional file ops, like show_fdinfo().
>>
>> v2: Split out DRM_GEM_FOPS instead of making DEFINE_DRM_GEM_FOPS
>> varardic
>> v3: nits
>>
>> Signed-off-by: Rob Clark <[email protected]>
>> Acked-by: Thomas Zimmermann <[email protected]>
>
> I suspect that with Tomas's ack we can pick this through the drm/msm. Is
> this correct? (I'll then pick it for the msm-lumag).
Sure, go ahead.
>
>> ---
>> include/drm/drm_gem.h | 26 ++++++++++++++++++--------
>> 1 file changed, 18 insertions(+), 8 deletions(-)
>>
>> diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
>> index 9d7c61a122dc..87cffc9efa85 100644
>> --- a/include/drm/drm_gem.h
>> +++ b/include/drm/drm_gem.h
>> @@ -314,6 +314,23 @@ struct drm_gem_object {
>> const struct drm_gem_object_funcs *funcs;
>> };
>> +/**
>> + * DRM_GEM_FOPS - Default drm GEM file operations
>> + *
>> + * This macro provides a shorthand for setting the GEM file ops in the
>> + * &file_operations structure. If all you need are the default ops, use
>> + * DEFINE_DRM_GEM_FOPS instead.
>> + */
>> +#define DRM_GEM_FOPS \
>> + .open = drm_open,\
>> + .release = drm_release,\
>> + .unlocked_ioctl = drm_ioctl,\
>> + .compat_ioctl = drm_compat_ioctl,\
>> + .poll = drm_poll,\
>> + .read = drm_read,\
>> + .llseek = noop_llseek,\
>> + .mmap = drm_gem_mmap
>> +
>> /**
>> * DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM
>> drivers
>> * @name: name for the generated structure
>> @@ -330,14 +347,7 @@ struct drm_gem_object {
>> #define DEFINE_DRM_GEM_FOPS(name) \
>> static const struct file_operations name = {\
>> .owner = THIS_MODULE,\
>> - .open = drm_open,\
>> - .release = drm_release,\
>> - .unlocked_ioctl = drm_ioctl,\
>> - .compat_ioctl = drm_compat_ioctl,\
>> - .poll = drm_poll,\
>> - .read = drm_read,\
>> - .llseek = noop_llseek,\
>> - .mmap = drm_gem_mmap,\
>> + DRM_GEM_FOPS,\
>> }
>> void drm_gem_object_release(struct drm_gem_object *obj);
>
>
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
On Thu, Jun 09, 2022 at 10:42:11AM -0700, Rob Clark wrote:
> From: Rob Clark <[email protected]>
>
> The DEFINE_DRM_GEM_FOPS() helper is a bit limiting if a driver wants to
> provide additional file ops, like show_fdinfo().
>
> v2: Split out DRM_GEM_FOPS instead of making DEFINE_DRM_GEM_FOPS
> varardic
> v3: nits
>
> Signed-off-by: Rob Clark <[email protected]>
> Acked-by: Thomas Zimmermann <[email protected]>
We're at three drivers, maybe it'd be better if this is more standardized?
I feel like we're opening a bit a can of worms here where everyone just
has some good odl fashioned fun. It's at least much better documented than
the old property proliferation :-)
-Daniel
> ---
> include/drm/drm_gem.h | 26 ++++++++++++++++++--------
> 1 file changed, 18 insertions(+), 8 deletions(-)
>
> diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
> index 9d7c61a122dc..87cffc9efa85 100644
> --- a/include/drm/drm_gem.h
> +++ b/include/drm/drm_gem.h
> @@ -314,6 +314,23 @@ struct drm_gem_object {
> const struct drm_gem_object_funcs *funcs;
> };
>
> +/**
> + * DRM_GEM_FOPS - Default drm GEM file operations
> + *
> + * This macro provides a shorthand for setting the GEM file ops in the
> + * &file_operations structure. If all you need are the default ops, use
> + * DEFINE_DRM_GEM_FOPS instead.
> + */
> +#define DRM_GEM_FOPS \
> + .open = drm_open,\
> + .release = drm_release,\
> + .unlocked_ioctl = drm_ioctl,\
> + .compat_ioctl = drm_compat_ioctl,\
> + .poll = drm_poll,\
> + .read = drm_read,\
> + .llseek = noop_llseek,\
> + .mmap = drm_gem_mmap
> +
> /**
> * DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM drivers
> * @name: name for the generated structure
> @@ -330,14 +347,7 @@ struct drm_gem_object {
> #define DEFINE_DRM_GEM_FOPS(name) \
> static const struct file_operations name = {\
> .owner = THIS_MODULE,\
> - .open = drm_open,\
> - .release = drm_release,\
> - .unlocked_ioctl = drm_ioctl,\
> - .compat_ioctl = drm_compat_ioctl,\
> - .poll = drm_poll,\
> - .read = drm_read,\
> - .llseek = noop_llseek,\
> - .mmap = drm_gem_mmap,\
> + DRM_GEM_FOPS,\
> }
>
> void drm_gem_object_release(struct drm_gem_object *obj);
> --
> 2.36.1
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
On Fri, Jun 24, 2022 at 1:49 PM Daniel Vetter <[email protected]> wrote:
>
> On Thu, Jun 09, 2022 at 10:42:11AM -0700, Rob Clark wrote:
> > From: Rob Clark <[email protected]>
> >
> > The DEFINE_DRM_GEM_FOPS() helper is a bit limiting if a driver wants to
> > provide additional file ops, like show_fdinfo().
> >
> > v2: Split out DRM_GEM_FOPS instead of making DEFINE_DRM_GEM_FOPS
> > varardic
> > v3: nits
> >
> > Signed-off-by: Rob Clark <[email protected]>
> > Acked-by: Thomas Zimmermann <[email protected]>
>
> We're at three drivers, maybe it'd be better if this is more standardized?
> I feel like we're opening a bit a can of worms here where everyone just
> has some good odl fashioned fun. It's at least much better documented than
> the old property proliferation :-)
yeah, we could have a standardized drm_show_fdinfo() fop plus
drm_driver callback.. at this point the drm core fxn would be rather
boring, ie. only printing dev->driver->name, so I didn't pursue that
approach (yet?).. but perhaps that changes over time. I think we
chose the right approach here, focusing on the documentation first so
that userspace has a standardized experience. The kernel side of
things, we are free to refactor at any time ;-)
BR,
-R
> -Daniel
>
> > ---
> > include/drm/drm_gem.h | 26 ++++++++++++++++++--------
> > 1 file changed, 18 insertions(+), 8 deletions(-)
> >
> > diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
> > index 9d7c61a122dc..87cffc9efa85 100644
> > --- a/include/drm/drm_gem.h
> > +++ b/include/drm/drm_gem.h
> > @@ -314,6 +314,23 @@ struct drm_gem_object {
> > const struct drm_gem_object_funcs *funcs;
> > };
> >
> > +/**
> > + * DRM_GEM_FOPS - Default drm GEM file operations
> > + *
> > + * This macro provides a shorthand for setting the GEM file ops in the
> > + * &file_operations structure. If all you need are the default ops, use
> > + * DEFINE_DRM_GEM_FOPS instead.
> > + */
> > +#define DRM_GEM_FOPS \
> > + .open = drm_open,\
> > + .release = drm_release,\
> > + .unlocked_ioctl = drm_ioctl,\
> > + .compat_ioctl = drm_compat_ioctl,\
> > + .poll = drm_poll,\
> > + .read = drm_read,\
> > + .llseek = noop_llseek,\
> > + .mmap = drm_gem_mmap
> > +
> > /**
> > * DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM drivers
> > * @name: name for the generated structure
> > @@ -330,14 +347,7 @@ struct drm_gem_object {
> > #define DEFINE_DRM_GEM_FOPS(name) \
> > static const struct file_operations name = {\
> > .owner = THIS_MODULE,\
> > - .open = drm_open,\
> > - .release = drm_release,\
> > - .unlocked_ioctl = drm_ioctl,\
> > - .compat_ioctl = drm_compat_ioctl,\
> > - .poll = drm_poll,\
> > - .read = drm_read,\
> > - .llseek = noop_llseek,\
> > - .mmap = drm_gem_mmap,\
> > + DRM_GEM_FOPS,\
> > }
> >
> > void drm_gem_object_release(struct drm_gem_object *obj);
> > --
> > 2.36.1
> >
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch