Re: [Intel-gfx] [PATCH v4 2/5] drm: Add private data field to trace control block

["Dmitry V. Levin" <ldv-u2l5PoMzF/Vg9hUCZPvPmw@public.gmane.org>]

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On Mon, Sep 07, 2015 at 08:23:57PM +0200, Patrik Jakobsson wrote:
> On Mon, Sep 7, 2015 at 6:51 PM, Dmitry V. Levin wrote:
> > On Mon, Aug 31, 2015 at 02:37:07PM +0200, Patrik Jakobsson wrote:
> > [...]
> >> Here's my take on it (I assume it needs some discussion):
> >>
> >> int
> >> set_tcb_priv_data(struct tcb *tcp, void *priv_data)
> >> {
> >>       /* A free callback is required before setting private data and private
> >>        * data must be set back to NULL before being set again.
> >>        */
> >
> > I think a single function initializing both _priv_data and _free_priv_data
> > would suffice:
> >
> > int
> > set_tcb_priv_data(struct tcb *tcp, void *priv_data,
> >                   void (*free_priv_data)(void *))
> > {
> >         if (tcp->_priv_data)
> >                 return -1;
> >
> >         tcp->_free_priv_data = free_priv_data;
> >         tcp->_priv_data = priv_data;
> >
> >         return 0;
> > }
> 
> Sure, and since they always come in a pairs it might be even better. If it turns
> out we need it split up it is easily done later.

JFYI, I've finalized and merged this set_tcb_priv_data interface.


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