linux-kernel - Re: [RFC 1/5] Make soft

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Message-ID: <1277361958.3947.14.camel@yhuang-dev.sh.intel.com>
Date:	Thu, 24 Jun 2010 14:45:58 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, "H.PeterA" <"nvin hpa"@zytor.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [RFC 1/5] Make soft_irq NMI safe

On Thu, 2010-06-24 at 14:09 +0800, Peter Zijlstra wrote:
> On Thu, 2010-06-24 at 11:04 +0800, Huang Ying wrote:
> > +#define __raise_softirq_preempt_off(nr)                                        \
> > +       do { set_bit(nr, (unsigned long *)local_softirq_pending()); } while (0) 
> 
> So that is the reason for that insane local_softirq_pending()
> definition?

I need to change local_softirq_pending() for this and the xchg() in
__do_softirq().

Best Regards,
Huang Ying


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