Re: [PATCH v3 02/11] iommufd: Rename _iommufd_object_alloc to iommufd_object_alloc_elm

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On Mon, Oct 21, 2024 at 12:26:54PM +1100, Alexey Kardashevskiy wrote:
> On 18/10/24 02:37, Jason Gunthorpe wrote:
> > On Thu, Oct 17, 2024 at 11:14:16AM -0300, Jason Gunthorpe wrote:
> > > On Wed, Oct 09, 2024 at 09:38:02AM -0700, Nicolin Chen wrote:
> > > 
> > > > @@ -217,12 +217,12 @@ iommufd_object_put_and_try_destroy(struct iommufd_ctx *ictx,
> > > >     iommufd_object_remove(ictx, obj, obj->id, 0);
> > > >   }
> > > > 
> > > > -struct iommufd_object *_iommufd_object_alloc(struct iommufd_ctx *ictx,
> > > > -                                        size_t size,
> > > > -                                        enum iommufd_object_type type);
> > > > +struct iommufd_object *iommufd_object_alloc_elm(struct iommufd_ctx *ictx,
> > > > +                                           size_t size,
> > > > +                                           enum iommufd_object_type type);
> > > 
> > > Maybe call it raw instead of elm? elm suggests it is an item in an
> > > array or likewise
> > 
> > Or keep this as the __ and rename
> > 
> > #define __iommufd_object_alloc(ictx, ptr, type, obj)                           \
> > 
> > That one to _elm like this:
> > 
> > #define iommufd_object_alloc_elm(ictx, ptr, type, elm)                           \
> >       container_of(_iommufd_object_alloc(                                    \
> >                            ictx,                                             \
> >                            sizeof(*(ptr)) + BUILD_BUG_ON_ZERO(               \
> >                                                     offsetof(typeof(*(ptr)), \
> >                                                              obj) != 0),     \
> >                            type),                                            \
> >                    typeof(*(ptr)), elm)
> > 
> > #define iommufd_object_alloc(ictx, ptr, type) \
> >       iommufd_object_alloc_elm(ictx, ptr, type, obj)
> 
> 
> Bikeshedding, yay :)
> 
> After starring at it for 10min - honestly - ditch
> iommufd_object_alloc_elm() and just pass "obj" (or "common.obj" in that
> single other occasion) to iommufd_object_alloc().
> 
> __iommufd_object_alloc() - a function - will the actual alloc,
> iommufd_object_alloc() - a macro - will do the types + call the __
> variant, simple and no naming issues.

All three-level helpers have callers. So that would be a bigger
patch than I expected to include in this series. Maybe I should
just drop this patch, since it's not functionally necessary. If
we want to clean the whole thing, can do with a separate series.

> And it would be real nice if it was "iobj" not this "obj" which is way
> too generic. Thanks,

Again, the renaming would be across the whole folder, not only
here. So, I think it could be a separate cleanup series later.

Thanks
Nicolin




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