linux-kernel - Re: [PATCH tip/core/rcu 2/4] rcu: Eliminate array-index-based RCU primitives

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Message-ID: <20150513130845.GI1517@pd.tnic>
Date:	Wed, 13 May 2015 15:08:45 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...nel.org,
	laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
	bobby.prani@...il.com, linux-edac@...r.kernel.org,
	Tony Luck <tony.luck@...el.com>
Subject: Re: [PATCH tip/core/rcu 2/4] rcu: Eliminate array-index-based RCU
 primitives

On Tue, May 12, 2015 at 02:18:42PM -0700, Paul E. McKenney wrote:
> From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
> 
> Now that rcu_access_index() and rcu_dereference_index_check() are no
> longer used, the commit removes them from the RCU API.  This means that
> RCU's data dependencies now involve only pointers, give or take the
> occasional cast to and then back from an integer type to do pointer
> arithmetic.  This in turn eliminates the need for a number of operations
> on values carrying RCU data dependencies.
> 
> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> Cc: linux-edac@...r.kernel.org
> Cc: Tony Luck <tony.luck@...el.com>
> Cc: Borislav Petkov <bp@...en8.de>
> ---
>  include/linux/rcupdate.h | 50 ------------------------------------------------
>  1 file changed, 50 deletions(-)

Diffstats like this one are my favourite ones!

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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