[PATCH] kernel /proc information modified for xen mem-set

[PATCH] kernel /proc information modified for xen mem-set

[Satoshi Uchida]

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Hi.

I interested that memory capacity can be changed.
But, although xen balloon information(/proc/xen/balloon) is modified for
xen mem-set command, 
memory information in domain is not modified.

In actually, MemFree is computed each time, but TotalMem is setup at
boot time.
So, in top command and etc.,  memory used decrease, but memory free
increased.
However, this is not correct, and If anyone see this information, he/she
maybe perplexed.

This patch is reflect TotalMem information.
But, I think that like this solution is not excellent.

Thank you.

from xen_changeset : Wed Oct 19 18:18:30 2005 +0100 7438:fb265175f47c

+++ a/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c	Fri Oct
21 19:51:41 2005
--- b/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c	Fri Oct
21 19:12:33 2005
***************
*** 70,75 ****
--- 70,78 ----
  static unsigned long current_pages;
  static unsigned long target_pages;
  
+ /* VM /proc information for memory */
+ extern unsigned long totalram_pages;
+ 
  /* We may hit the hard limit in Xen. If we do then we remember it. */
  static unsigned long hard_limit;
  
***************
*** 223,228 ****
--- 226,232 ----
  	}
  
  	current_pages += nr_pages;
+ 	totalram_pages = current_pages;
  
   out:
  	balloon_unlock(flags);
***************
*** 295,300 ****
--- 299,305 ----
  		XENMEM_decrease_reservation, &reservation) != nr_pages);
  
  	current_pages -= nr_pages;
+ 	totalram_pages = current_pages;
  
  	balloon_unlock(flags);
  


Satoshi UCHIDA

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Re: [PATCH] kernel /proc information modified for xen mem-set

[Vincent Hanquez]

On Fri, Oct 21, 2005 at 08:08:59PM +0900, Satoshi Uchida wrote:
> I interested that memory capacity can be changed.
> But, although xen balloon information(/proc/xen/balloon) is modified for
> xen mem-set command, 
> memory information in domain is not modified.
> 
> In actually, MemFree is computed each time, but TotalMem is setup at
> boot time.
> So, in top command and etc.,  memory used decrease, but memory free
> increased.
> However, this is not correct, and If anyone see this information, he/she
> maybe perplexed.
> 
> This patch is reflect TotalMem information.
> But, I think that like this solution is not excellent.

its seems fine.

thanks applied.
-- 
Vincent Hanquez