Re: [PATCH 03/35] lmb: Add ARCH_DISCARD_LMB to put lmb code to .init

[Yinghai]

On 05/13/2010 07:14 PM, Benjamin Herrenschmidt wrote:
> On Thu, 2010-05-13 at 17:19 -0700, Yinghai Lu wrote:
>> So those lmb bits could be released after kernel is booted up.
>>
>> Arch code could define ARCH_DISCARD_LMB in asm/lmb.h,
>> __init_lmb will become __init, __initdata_lmb will becom __initdata
>>
>> x86 code will use that.
> 
> So you do not intend to use lmb after boot ? This will break the debugfs
> files unless you also remove those.

no, x86 don't lmb after boot.

yes


...

>> @@ -695,7 +695,7 @@ static int __init early_lmb(char *p)
>>  }
>>  early_param("lmb", early_lmb);
>>  
>> -#ifdef CONFIG_DEBUG_FS
>> +#if defined(CONFIG_DEBUG_FS) && !defined(ARCH_DISCARD_LMB)
>>  
>>  static int lmb_debug_show(struct seq_file *m, void *private)
>>  {
> 

it will check ARCH_DISCARD_LMB
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