linux-kernel - Re: [PATCH v2 04/15] dmaengine: idxd: Export descriptor management functions

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Date:   Tue, 28 Mar 2023 11:12:16 -0500
From:   Tom Zanussi <tom.zanussi@...ux.intel.com>
To:     Dave Jiang <dave.jiang@...el.com>, herbert@...dor.apana.org.au,
        davem@...emloft.net, fenghua.yu@...el.com, vkoul@...nel.org
Cc:     tony.luck@...el.com, wajdi.k.feghali@...el.com,
        james.guilford@...el.com, kanchana.p.sridhar@...el.com,
        giovanni.cabiddu@...el.com, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, dmaengine@...r.kernel.org
Subject: Re: [PATCH v2 04/15] dmaengine: idxd: Export descriptor management
 functions

Hi Dave,

On Tue, 2023-03-28 at 09:04 -0700, Dave Jiang wrote:
> 
> 
> On 3/28/23 8:35 AM, Tom Zanussi wrote:
> > To allow idxd sub-drivers to access the descriptor management
> > functions, export them.
> > 
> > Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
> > ---
> >   drivers/dma/idxd/submit.c | 3 +++
> >   1 file changed, 3 insertions(+)
> > 
> > diff --git a/drivers/dma/idxd/submit.c b/drivers/dma/idxd/submit.c
> > index c01db23e3333..9d9ec0b76ccd 100644
> > --- a/drivers/dma/idxd/submit.c
> > +++ b/drivers/dma/idxd/submit.c
> > @@ -61,6 +61,7 @@ struct idxd_desc *idxd_alloc_desc(struct idxd_wq
> > *wq, enum idxd_op_type optype)
> >   
> >         return __get_desc(wq, idx, cpu);
> >   }
> > +EXPORT_SYMBOL_NS_GPL(idxd_alloc_desc, IDXD);
> >   
> >   void idxd_free_desc(struct idxd_wq *wq, struct idxd_desc *desc)
> >   {
> > @@ -69,6 +70,7 @@ void idxd_free_desc(struct idxd_wq *wq, struct
> > idxd_desc *desc)
> >         desc->cpu = -1;
> >         sbitmap_queue_clear(&wq->sbq, desc->id, cpu);
> >   }
> > +EXPORT_SYMBOL_NS_GPL(idxd_free_desc, IDXD);
> >   
> >   static struct idxd_desc *list_abort_desc(struct idxd_wq *wq,
> > struct idxd_irq_entry *ie,
> >                                          struct idxd_desc *desc)
> > @@ -215,3 +217,4 @@ int idxd_submit_desc(struct idxd_wq *wq, struct
> > idxd_desc *desc)
> >         percpu_ref_put(&wq->wq_active);
> >         return 0;
> >   }
> > +EXPORT_SYMBOL_GPL(idxd_submit_desc);
> 
> This one should use the EXPORT_SYMBOL_NS_GPL() as above?

Yeah, not sure how I missed that one ;-/

Thanks for pointing it out.

Tom