linux-kernel - Re: [RFC][PATCH 1/6] Storing ipcs into IDRs

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Message-ID: <46DBDEFF.4030206@bull.net>
Date:	Mon, 03 Sep 2007 12:16:31 +0200
From:	Nadia Derbey <Nadia.Derbey@...l.net>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, matthltc@...ibm.com
Subject: Re: [RFC][PATCH 1/6] Storing ipcs into IDRs

Andi Kleen wrote:
> Nadia.Derbey@...l.net writes:
> 
> 
>>This patch introduces ipcs storage into IDRs. The main changes are:
>>  . This ipc_ids structure is changed: the entries array is changed into a
>>    root idr structure.
>>  . The grow_ary() routine is removed: it is not needed anymore when adding
>>    an ipc structure, since we are now using the IDR facility.
>>  . The ipc_rmid() routine interface is changed:
>>       . there is no need for this routine to return the pointer passed in as
>>         argument: it is now declared as a void
>>       . since the id is now part of the kern_ipc_perm structure, no need to
>>         have it as an argument to the routine
>>
> 
> 
> Thanks for doing this work. It was long overdue.
> 
> Do you have any data how this changes memory consumption with 
> many objects? 
> 

No. Will try to send you this as soon as I've done some measurements.

Regards,
Nadia


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