linux-kernel - Re: [patch 2/3] Introduce BOOTMEM

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Message-ID: <20071016184440.GA19844@suse.de>
Date:	Tue, 16 Oct 2007 20:44:40 +0200
From:	Bernhard Walle <bwalle@...e.de>
To:	Dave Hansen <haveblue@...ibm.com>
Cc:	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
	akpm@...ux-foundation.org, ak@...e.de
Subject: Re: [patch 2/3] Introduce BOOTMEM_EXCLUSIVE

Hi,

* Dave Hansen <haveblue@...ibm.com> [2007-10-16 20:08]:
> On Tue, 2007-10-16 at 18:28 +0200, Bernhard Walle wrote:
> > 
> > @@ -736,7 +736,7 @@ static int __init smp_scan_config (unsig
> >                         smp_found_config = 1;
> >                         printk(KERN_INFO "found SMP MP-table at %08lx\n",
> >                                                 virt_to_phys(mpf));
> > -                       reserve_bootmem(virt_to_phys(mpf), PAGE_SIZE);
> > +                       reserve_bootmem(virt_to_phys(mpf), PAGE_SIZE, 0);
> >                         if (mpf->mpf_physptr) {
> >                                 /* 
> 
> Could you give all of these 0's a name?  I really hate seeing random
> magic numbers in these things.  0 completely kills the ability of
> someone to read the code and figure out what it is trying to do without
> going and looking at reserve_bootmem().

Of course I can replace that zeroes with something like BOOTMEM_DEFAULT.

> Or, alternatively, do something like this:
> 
> -extern void reserve_bootmem(unsigned long addr, unsigned long size);

Andi was against more bootmem functions. ;)


Thanks,
   Bernhard
-
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