linux-kernel - Re: [patch 02/34] arch: Consolidate tsk_is

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Date:	Fri, 22 Mar 2013 10:26:19 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Tony Breeds <tony@...eyournoodle.com>
cc:	LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Magnus Damm <magnus.damm@...il.com>
Subject: Re: [patch 02/34] arch: Consolidate tsk_is_polling()

On Fri, 22 Mar 2013, Tony Breeds wrote:

> On Thu, Mar 21, 2013 at 09:52:57PM -0000, Thomas Gleixner wrote:
>  
> > +/*
> > + * Idle thread specific functions to determine the need_resched
> > + * polling state. We have two versions, one based on TS_POLLING in
> > + * thread_info.status and one based on TIF_POLLING_NRFLAG in
> > + * thread_info.flags
> > + */
> > +#ifdef TS_POLLING
> > +static inline int tsk_is_polling(struct task_struct *p)
> > +{
> > +	return task_thread_info(p)->status & TS_POLLING;
> > +}
> > +#elif defined(TIF_POLLING_NRFLAG)
> > +static inline int tsk_is_polling(struct task_struct *p)
> > +{
> > +	test_tsk_thread_flag(p, TIF_POLLING_NRFLAG);
> > +}
> 
> On powerpc (at least) this is used before it's declared.  Also I think
> you're missing a 'return' in that function.

Mooo
 
> *cough* https://www.kernel.org/pub/tools/crosstool/ *cough*

Yes, I know. /me feels bad
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