linux-kernel - Re: [PATCH] i386/kernel/smp.c: don't use set_irq

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Message-ID: <20061204094835.GD7872@elte.hu>
Date:	Mon, 4 Dec 2006 10:48:35 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Oleg Nesterov <oleg@...sign.ru>
Cc:	Andrew Morton <akpm@...l.org>, David Howells <dhowells@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i386/kernel/smp.c: don't use set_irq_regs()


* Oleg Nesterov <oleg@...sign.ru> wrote:

> We don't need to setup _irq_regs in smp_xxx_interrupt (except apic 
> timer). These handlers run with irqs disabled and do not call 
> functions which need "struct pt_regs".
> 
> Signed-off-by: Oleg Nesterov <oleg@...sign.ru>

yeah. These are leftover inefficiencies from the ptregs conversion, 
which just added a regs variable to every arch-level irq handler 
blindly.

Acked-by: Ingo Molnar <mingo@...e.hu>

	Ingo
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