linux-kernel - Re: [PATCH 2/3] sched: trivial sparse warning in sched.c

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Message-ID: <20080216212747.GC6753@cvg>
Date:	Sun, 17 Feb 2008 00:27:47 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Harvey Harrison <harvey.harrison@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] sched: trivial sparse warning in sched.c

[Peter Zijlstra - Sat, Feb 16, 2008 at 10:11:29PM +0100]
| 
| On Fri, 2008-02-15 at 09:56 -0800, Harvey Harrison wrote:
| > kernel/sched.c:3680:3: warning: returning void-valued expression
| 
| I'm wondering,... why is this wrong?
| 
| > Signed-off-by: Harvey Harrison <harvey.harrison@...il.com>
| > ---
| >  kernel/sched.c |    6 ++++--
| >  1 files changed, 4 insertions(+), 2 deletions(-)
| > 
| > diff --git a/kernel/sched.c b/kernel/sched.c
| > index f28f19e..824d5a9 100644
| > --- a/kernel/sched.c
| > +++ b/kernel/sched.c
| > @@ -3676,8 +3676,10 @@ void account_system_time(struct task_struct *p, int hardirq_offset,
| >  	struct rq *rq = this_rq();
| >  	cputime64_t tmp;
| >  
| > -	if ((p->flags & PF_VCPU) && (irq_count() - hardirq_offset == 0))
| > -		return account_guest_time(p, cputime);
| > +	if ((p->flags & PF_VCPU) && (irq_count() - hardirq_offset == 0)) {
| > +		account_guest_time(p, cputime);
| > +		return;
| > +	}
| >  
| >  	p->stime = cputime_add(p->stime, cputime);
| >  

Hi Peter,

dont you find 'return (void)foo();' statement a bit strange (as it was in
original code)? ;) Am I wrong? /it's night here, so half a brain already
tuned off ;)/

		- Cyrill -
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