linux-kernel - Re: [PATCH v1 1/8] lib/uuid: Introduce uuid_{be|le}_cmp

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Date:   Mon, 24 Apr 2017 11:53:30 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     "Winkler, Tomas" <tomas.winkler@...el.com>,
        "andy.shevchenko@...il.com" <andy.shevchenko@...il.com>
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        "Koul, Vinod" <vinod.koul@...el.com>,
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Subject: Re: [PATCH v1 1/8] lib/uuid: Introduce uuid_{be|le}_cmp_p{p}()
 helpers

On Sun, 2017-04-23 at 20:20 +0000, Winkler, Tomas wrote:
> On Sun, 2017-04-23 at 15:42 +0300, Andy Shevchenko wrote:
> > On Sun, Apr 23, 2017 at 1:29 PM, Winkler, Tomas <tomas.winkler@...el
> > .
> > com> wrote:
> > > > New helpers take pointers to uuid_{be|le} as parameters.
> > > > 
> > > > When using them on a raw data we don't need to do an ugly
> > > > dereference and,
> > > > in some cases, a type casting.
> > > 
> > > I think this going overboard, the _pp types  are just enough.
> > 
> > I looked at existing users and there are cases like
> > #define XXX_UUID UUID_...(a, b, c, ...)
> > 
> > uuid_.*_cmp(value, XXX_UUID)
> > 
> > For _pp variant if would be _cmp_pp(value, &XXX_UUID) which is
> > slightly worse than for _p variant.
> 
> 
> Maybe it's worth to actually replace the defines with variables than
> to
> create an interface with all the permutations.

Maybe. I didn't estimate the number of users that would be in a scope.

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy