linux-kernel - Re: [RFC PATCH] sparse_irq aka dyn

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Message-Id: <20081110015511.453a801e.akpm@linux-foundation.org>
Date:	Mon, 10 Nov 2008 01:55:11 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Yinghai Lu <yinghai@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] sparse_irq aka dyn_irq

On Mon, 10 Nov 2008 10:40:33 +0100 Ingo Molnar <mingo@...e.hu> wrote:

> > >> @@ -987,6 +988,8 @@ void __init mem_init(void)
> > >>
> > >>       set_highmem_pages_init();
> > >>
> > >> +     after_bootmem = 1;
> > >
> > > this hack can go away once we have a proper percpu_alloc() that can be
> > > used early enough.
> > 
> > where is that fancy patch? current percpu_alloc(), will keep big 
> > pointer in array..., instead of put that pointer in percpu_area
> > 
> > 64bit has that after_bootmem already.
> 
> or at least introduce a "bootmem agnostic" allocator instead of 
> open-coding the after_bootmem flag.
> 
> Something like:
> 
>   early_kzalloc()
> 
> ?
> 
> Andrew, any preferences?

My mind reading ain't what it was, and this after_bootmem flag is
write-only in this patch.

So what's all this about?
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