linux-kernel - RE: [PATCHv8 RFC] pwm: Add Freescale FTM PWM driver support

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Date:	Mon, 6 Jan 2014 05:25:32 +0000
From:	"Li.Xiubo@...escale.com" <Li.Xiubo@...escale.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	"thierry.reding@...il.com" <thierry.reding@...il.com>,
	"bpringlemeir@...ps.com" <bpringlemeir@...ps.com>,
	"linux-pwm@...r.kernel.org" <linux-pwm@...r.kernel.org>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Huan Wang <Huan.Wang@...escale.com>,
	Jingchang Lu <jingchang.lu@...escale.com>
Subject: RE: [PATCHv8 RFC] pwm: Add Freescale FTM PWM driver support

> > > > +static inline int fsl_pwm_calculate_default_ps(struct fsl_pwm_chip *fpc,
> > > > +					       enum fsl_pwm_clk index)
> > > > +{
> > >
> > > Why do you declare this (and other module-local) function as inline?
> > > It is usually better let compiler decide if given function should be
> > > inlined or not.
> > >
> >
> > Could the compiler know when the given function should be inlined by
> > not declare it?
> 
> Yes.
> 
> > And when will be inlined ?
> 
> When it makes sense to do so from compiler's point of view: i.e. it is
> smallish or with single call site and there are enough registers, etc,
> etc.
>

Well, the inline is not very useful here, I will revise this.


Thanks,

--
Best Regards,
Xiubo
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