linux-kernel - Re: [patch 3/7] timer: Use hlist for the timer wheel hash buckets

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Date:	Wed, 27 May 2015 14:43:23 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	John Stultz <john.stultz@...aro.org>,
	Joonwoo Park <joonwoop@...eaurora.org>,
	Wenbo Wang <wenbo.wang@...blaze.com>
Subject: Re: [patch 3/7] timer: Use hlist for the timer wheel hash buckets

On 26-05-15, 22:50, Thomas Gleixner wrote:
> This reduces the size of struct tvec_base by 50% and results in
> slightly smaller code as well.
> 
> Before:
>    struct tvec_base: size: 8256, cachelines: 129
> 
>    text	   data	    bss	    dec	    hex	filename
>   17698	  13297	   8256	  39251	   9953	../build/kernel/time/timer.o
> 
> After:
>   struct tvec_base: 4160, cachelines: 65, members: 12 */
> 
>    text	   data	    bss	    dec	    hex	filename
>   17491	   9201	   4160	  30852	   7884	../build/kernel/time/timer.o
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> ---
>  include/linux/timer.h |    6 ++--
>  kernel/time/timer.c   |   64 +++++++++++++++++++++-----------------------------
>  2 files changed, 30 insertions(+), 40 deletions(-)

Reviewed-by: Viresh Kumar <viresh.kumar@...aro.org>

-- 
viresh
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