diff mbox series

[08/20] drm/i915: Promote ptrdiff() to i915_utils.h

Message ID 20210603051630.2635-9-matthew.brost@intel.com (mailing list archive)
State New, archived
Headers show
Series GuC CTBs changes + a few misc patches | expand

Commit Message

Matthew Brost June 3, 2021, 5:16 a.m. UTC
From: Michal Wajdeczko <michal.wajdeczko@intel.com>

Generic helpers should be placed in i915_utils.h.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
---
 drivers/gpu/drm/i915/i915_utils.h | 5 +++++
 drivers/gpu/drm/i915/i915_vma.h   | 5 -----
 2 files changed, 5 insertions(+), 5 deletions(-)

Comments

Daniel Vetter June 3, 2021, 9:35 p.m. UTC | #1
On Wed, Jun 02, 2021 at 10:16:18PM -0700, Matthew Brost wrote:
> From: Michal Wajdeczko <michal.wajdeczko@intel.com>
> 
> Generic helpers should be placed in i915_utils.h.

Random rant, but we're _way_ too happy to just stuff random things into
i915_utils.h without trying to properly upstream it.

For thinks like this the general dumping ground would be kernel.h, there's
a few pointer helpers there already. Follow up patch maybe nice.
-Daniel

> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> Signed-off-by: Matthew Brost <matthew.brost@intel.com>
> Reviewed-by: Matthew Brost <matthew.brost@intel.com>
> ---
>  drivers/gpu/drm/i915/i915_utils.h | 5 +++++
>  drivers/gpu/drm/i915/i915_vma.h   | 5 -----
>  2 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
> index f02f52ab5070..5259edacde38 100644
> --- a/drivers/gpu/drm/i915/i915_utils.h
> +++ b/drivers/gpu/drm/i915/i915_utils.h
> @@ -201,6 +201,11 @@ __check_struct_size(size_t base, size_t arr, size_t count, size_t *size)
>  	__T;								\
>  })
>  
> +static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
> +{
> +	return a - b;
> +}
> +
>  /*
>   * container_of_user: Extract the superclass from a pointer to a member.
>   *
> diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
> index dc6926d89626..eca452a9851f 100644
> --- a/drivers/gpu/drm/i915/i915_vma.h
> +++ b/drivers/gpu/drm/i915/i915_vma.h
> @@ -151,11 +151,6 @@ static inline void i915_vma_put(struct i915_vma *vma)
>  	i915_gem_object_put(vma->obj);
>  }
>  
> -static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
> -{
> -	return a - b;
> -}
> -
>  static inline long
>  i915_vma_compare(struct i915_vma *vma,
>  		 struct i915_address_space *vm,
> -- 
> 2.28.0
>
Matthew Brost June 4, 2021, 2:02 a.m. UTC | #2
On Thu, Jun 03, 2021 at 11:35:28PM +0200, Daniel Vetter wrote:
> On Wed, Jun 02, 2021 at 10:16:18PM -0700, Matthew Brost wrote:
> > From: Michal Wajdeczko <michal.wajdeczko@intel.com>
> > 
> > Generic helpers should be placed in i915_utils.h.
> 
> Random rant, but we're _way_ too happy to just stuff random things into
> i915_utils.h without trying to properly upstream it.
> 
> For thinks like this the general dumping ground would be kernel.h, there's
> a few pointer helpers there already. Follow up patch maybe nice.
> -Daniel
> 

Sure. I've added this to a list of follow ups so this comment doesn't
get lost.

Matt

> > 
> > Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> > Signed-off-by: Matthew Brost <matthew.brost@intel.com>
> > Reviewed-by: Matthew Brost <matthew.brost@intel.com>
> > ---
> >  drivers/gpu/drm/i915/i915_utils.h | 5 +++++
> >  drivers/gpu/drm/i915/i915_vma.h   | 5 -----
> >  2 files changed, 5 insertions(+), 5 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
> > index f02f52ab5070..5259edacde38 100644
> > --- a/drivers/gpu/drm/i915/i915_utils.h
> > +++ b/drivers/gpu/drm/i915/i915_utils.h
> > @@ -201,6 +201,11 @@ __check_struct_size(size_t base, size_t arr, size_t count, size_t *size)
> >  	__T;								\
> >  })
> >  
> > +static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
> > +{
> > +	return a - b;
> > +}
> > +
> >  /*
> >   * container_of_user: Extract the superclass from a pointer to a member.
> >   *
> > diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
> > index dc6926d89626..eca452a9851f 100644
> > --- a/drivers/gpu/drm/i915/i915_vma.h
> > +++ b/drivers/gpu/drm/i915/i915_vma.h
> > @@ -151,11 +151,6 @@ static inline void i915_vma_put(struct i915_vma *vma)
> >  	i915_gem_object_put(vma->obj);
> >  }
> >  
> > -static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
> > -{
> > -	return a - b;
> > -}
> > -
> >  static inline long
> >  i915_vma_compare(struct i915_vma *vma,
> >  		 struct i915_address_space *vm,
> > -- 
> > 2.28.0
> > 
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
Daniel Vetter June 4, 2021, 8:11 a.m. UTC | #3
On Thu, Jun 03, 2021 at 07:02:57PM -0700, Matthew Brost wrote:
> On Thu, Jun 03, 2021 at 11:35:28PM +0200, Daniel Vetter wrote:
> > On Wed, Jun 02, 2021 at 10:16:18PM -0700, Matthew Brost wrote:
> > > From: Michal Wajdeczko <michal.wajdeczko@intel.com>
> > > 
> > > Generic helpers should be placed in i915_utils.h.
> > 
> > Random rant, but we're _way_ too happy to just stuff random things into
> > i915_utils.h without trying to properly upstream it.
> > 
> > For thinks like this the general dumping ground would be kernel.h, there's
> > a few pointer helpers there already. Follow up patch maybe nice.
> > -Daniel
> > 
> 
> Sure. I've added this to a list of follow ups so this comment doesn't
> get lost.

btw I think we probably want to rename it, because it's not just the
well-defined C pointer difference. We convert to void * so we get the
difference in bytes. So maybe ptr_offset or ptrdiff_in_bytes or something
like that which makes it clear.
-Daniel

> 
> Matt
> 
> > > 
> > > Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
> > > Signed-off-by: Matthew Brost <matthew.brost@intel.com>
> > > Reviewed-by: Matthew Brost <matthew.brost@intel.com>
> > > ---
> > >  drivers/gpu/drm/i915/i915_utils.h | 5 +++++
> > >  drivers/gpu/drm/i915/i915_vma.h   | 5 -----
> > >  2 files changed, 5 insertions(+), 5 deletions(-)
> > > 
> > > diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
> > > index f02f52ab5070..5259edacde38 100644
> > > --- a/drivers/gpu/drm/i915/i915_utils.h
> > > +++ b/drivers/gpu/drm/i915/i915_utils.h
> > > @@ -201,6 +201,11 @@ __check_struct_size(size_t base, size_t arr, size_t count, size_t *size)
> > >  	__T;								\
> > >  })
> > >  
> > > +static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
> > > +{
> > > +	return a - b;
> > > +}
> > > +
> > >  /*
> > >   * container_of_user: Extract the superclass from a pointer to a member.
> > >   *
> > > diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
> > > index dc6926d89626..eca452a9851f 100644
> > > --- a/drivers/gpu/drm/i915/i915_vma.h
> > > +++ b/drivers/gpu/drm/i915/i915_vma.h
> > > @@ -151,11 +151,6 @@ static inline void i915_vma_put(struct i915_vma *vma)
> > >  	i915_gem_object_put(vma->obj);
> > >  }
> > >  
> > > -static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
> > > -{
> > > -	return a - b;
> > > -}
> > > -
> > >  static inline long
> > >  i915_vma_compare(struct i915_vma *vma,
> > >  		 struct i915_address_space *vm,
> > > -- 
> > > 2.28.0
> > > 
> > 
> > -- 
> > Daniel Vetter
> > Software Engineer, Intel Corporation
> > http://blog.ffwll.ch
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
index f02f52ab5070..5259edacde38 100644
--- a/drivers/gpu/drm/i915/i915_utils.h
+++ b/drivers/gpu/drm/i915/i915_utils.h
@@ -201,6 +201,11 @@  __check_struct_size(size_t base, size_t arr, size_t count, size_t *size)
 	__T;								\
 })
 
+static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
+{
+	return a - b;
+}
+
 /*
  * container_of_user: Extract the superclass from a pointer to a member.
  *
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index dc6926d89626..eca452a9851f 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -151,11 +151,6 @@  static inline void i915_vma_put(struct i915_vma *vma)
 	i915_gem_object_put(vma->obj);
 }
 
-static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
-{
-	return a - b;
-}
-
 static inline long
 i915_vma_compare(struct i915_vma *vma,
 		 struct i915_address_space *vm,