Re: [PATCH 02/15] dma-buf: Switch to inline kerneldoc

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On Tue, Jun 22, 2021 at 9:01 PM Sam Ravnborg <sam@xxxxxxxxxxxx> wrote:
>
> Hi Daniel.
>
> On Tue, Jun 22, 2021 at 06:54:58PM +0200, Daniel Vetter wrote:
> > Also review & update everything while we're at it.
> >
> > This is prep work to smash a ton of stuff into the kerneldoc for
> > @resv.
> >
> > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> > Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
> > Cc: "Christian König" <christian.koenig@xxxxxxx>
> > Cc: Alex Deucher <alexander.deucher@xxxxxxx>
> > Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> > Cc: Dave Airlie <airlied@xxxxxxxxxx>
> > Cc: Nirmoy Das <nirmoy.das@xxxxxxx>
> > Cc: Deepak R Varma <mh12gx2825@xxxxxxxxx>
> > Cc: Chen Li <chenli@xxxxxxxxxxxxx>
> > Cc: Kevin Wang <kevin1.wang@xxxxxxx>
> > Cc: linux-media@xxxxxxxxxxxxxxx
> > Cc: linaro-mm-sig@xxxxxxxxxxxxxxxx
> > ---
> >  include/linux/dma-buf.h | 107 +++++++++++++++++++++++++++++++---------
> >  1 file changed, 83 insertions(+), 24 deletions(-)
> >
> > diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
> > index 92eec38a03aa..6d18b9e448b9 100644
> > --- a/include/linux/dma-buf.h
> > +++ b/include/linux/dma-buf.h
> > @@ -289,28 +289,6 @@ struct dma_buf_ops {
> >
> >  /**
> >   * struct dma_buf - shared buffer object
> > - * @size: size of the buffer; invariant over the lifetime of the buffer.
> > - * @file: file pointer used for sharing buffers across, and for refcounting.
> > - * @attachments: list of dma_buf_attachment that denotes all devices attached,
> > - *               protected by dma_resv lock.
> > - * @ops: dma_buf_ops associated with this buffer object.
> > - * @lock: used internally to serialize list manipulation, attach/detach and
> > - *        vmap/unmap
> > - * @vmapping_counter: used internally to refcnt the vmaps
> > - * @vmap_ptr: the current vmap ptr if vmapping_counter > 0
> > - * @exp_name: name of the exporter; useful for debugging.
> > - * @name: userspace-provided name; useful for accounting and debugging,
> > - *        protected by @resv.
> > - * @name_lock: spinlock to protect name access
> > - * @owner: pointer to exporter module; used for refcounting when exporter is a
> > - *         kernel module.
> > - * @list_node: node for dma_buf accounting and debugging.
> > - * @priv: exporter specific private data for this buffer object.
> > - * @resv: reservation object linked to this dma-buf
> > - * @poll: for userspace poll support
> > - * @cb_excl: for userspace poll support
> > - * @cb_shared: for userspace poll support
> > - * @sysfs_entry: for exposing information about this buffer in sysfs.
>
> This sentence
> >   * The attachment_uid member of @sysfs_entry is protected by dma_resv lock
> >   * and is incremented on each attach.
> belongs to the paragraph describing sysfs_entry and should be moved too.
> Or maybe reworded and then document all fields in dma_buf_sysfs_entry?

Unfortunately kerneldoc lost the ability to document embedded
structs/unions. At least last time I checked, it's a bit a bikeshed.
So I'd need to pull the entire struct out. I'll just move it since
it's indeed misplaced.

> With this fixed:
> Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>

Thanks for taking a look.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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