linux-kernel - Re: [PATCH -mm 0/6] rcu: introduce kfree

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Date:	Wed, 4 Mar 2009 12:45:04 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Lai Jiangshan <laijs@...fujitsu.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Manfred Spraul <manfred@...orfullife.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm 0/6] rcu: introduce kfree_rcu V2


* Lai Jiangshan <laijs@...fujitsu.com> wrote:

> Ingo Molnar wrote:
> > 
> > Nice idea. The patches dont actually remove the RCU helpers 
> > anywhere. Might be useful to include a few example conversions 
> > of this facility as well, so that the total impact can be seen.
> > 
> > 
> 
> This is one of patches I test kfree_rcu().
> And it could be an example conversions of this facility.
> 
> ---
>  arch/ia64/sn/kernel/irq.c           |   14 +-----------
>  block/genhd.c                       |   10 --------
>  ipc/sem.c                           |   10 +-------
>  kernel/audit_tree.c                 |    8 ------
>  kernel/cgroup.c                     |    9 -------
>  kernel/smp.c                        |   11 ---------
>  mm/vmalloc.c                        |   18 +--------------
>  net/can/af_can.c                    |   14 +-----------
>  net/core/gen_estimator.c            |    9 -------
>  net/core/net_namespace.c            |   10 --------
>  net/ipv4/fib_trie.c                 |    7 ------
>  net/ipv6/addrconf.c                 |   10 --------
>  net/netfilter/nf_conntrack_extend.c |    8 ------
>  net/netlabel/netlabel_unlabeled.c   |   42 +-----------------------------------
>  security/device_cgroup.c            |   10 --------
>  security/keys/keyring.c             |   15 ------------
>  security/keys/user_defined.c        |   18 +--------------
>  security/selinux/netif.c            |   18 ---------------
>  security/selinux/netnode.c          |   20 +----------------
>  security/selinux/netport.c          |   20 +----------------
>  20 files changed, 28 insertions(+), 253 deletions(-)

Looks convincing to me but Nick does not like the extra SLAB 
field it uses :-/

	Ingo
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