linux-kernel - Re: [RFC][PATCH 4/7] RSS accounting hooks over the code

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Date:	Wed, 14 Mar 2007 18:45:34 +0300
From:	Pavel Emelianov <xemul@...ru>
To:	Cedric Le Goater <clg@...ibm.com>
CC:	Andrew Morton <akpm@...l.org>, Paul Menage <menage@...gle.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Balbir Singh <balbir@...ibm.com>, devel@...nvz.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	containers@...ts.osdl.org, Kirill Korotaev <dev@...ru>
Subject: Re: [RFC][PATCH 4/7] RSS accounting hooks over the code

Cedric Le Goater wrote:
>> --- linux-2.6.20.orig/mm/migrate.c	2007-02-04 21:44:54.000000000 +0300
>> +++ linux-2.6.20-0/mm/migrate.c	2007-03-06 13:33:28.000000000 +0300
>> @@ -134,6 +134,7 @@ static void remove_migration_pte(struct 
>>  	pte_t *ptep, pte;
>>   	spinlock_t *ptl;
>>  	unsigned long addr = page_address_in_vma(new, vma);
>> +	struct page_container *pcont;
>>
>>  	if (addr == -EFAULT)
>>  		return;
>> @@ -157,6 +158,11 @@ static void remove_migration_pte(struct 
>>   		return;
>>   	}
>>
>> +	if (container_rss_prepare(new, vma, &pcont)) {
>> +		pte_unmap(ptep);
>> +		return;
>> +	}
>> +
>>   	ptl = pte_lockptr(mm, pmd);
>>   	spin_lock(ptl);
>>  	pte = *ptep;
>> @@ -175,16 +181,19 @@ static void remove_migration_pte(struct 
>>  	set_pte_at(mm, addr, ptep, pte);
>>
>>  	if (PageAnon(new))
>> -		page_add_anon_rmap(new, vma, addr);
>> +		page_add_anon_rmap(new, vma, addr, pcont);
>>  	else
>> -		page_add_file_rmap(new);
>> +		page_add_file_rmap(new, pcont);
>>
>>  	/* No need to invalidate - it was non-present before */
>>  	update_mmu_cache(vma, addr, pte);
>>  	lazy_mmu_prot_update(pte);
>> +	pte_unmap_unlock(ptep, ptl);
>> +	return;
>>
>>  out:
>>  	pte_unmap_unlock(ptep, ptl);
>> +	container_rss_release(pcont);
>>  }
>>
>>  /*
> 
> you missed out an include in mm/migrate.c
> 
> cheers,

Thanks! :)

> C.
> Signed-off-by: Cedric Le Goater <clg@...ibm.com>
> ---
>  mm/migrate.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> Index: 2.6.20/mm/migrate.c
> ===================================================================
> --- 2.6.20.orig/mm/migrate.c
> +++ 2.6.20/mm/migrate.c
> @@ -28,6 +28,7 @@
>  #include <linux/mempolicy.h>
>  #include <linux/vmalloc.h>
>  #include <linux/security.h>
> +#include <linux/rss_container.h>
>  
>  #include "internal.h"
> 
> -
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