linux-kernel - Re: [PATCH] tpm_tis: make array cmd_getticks static const to shink object code size

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Message-ID: <20170825165242.GA5254@obsidianresearch.com>
Date:   Fri, 25 Aug 2017 10:52:42 -0600
From:   Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Peter Huewe <peterhuewe@....de>,
        Marcel Selhorst <tpmdd@...horst.net>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tpm_tis: make array cmd_getticks static const to shink
 object code size

On Fri, Aug 25, 2017 at 05:45:05PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Don't populate array cmd_getticks on the stack, instead make it static
> const.  Makes the object code smaller by over 160 bytes:
> 
> Before:
>    text	   data	    bss	    dec	    hex	filename
>   18813	   3152	    128	  22093	   564d	drivers/char/tpm/tpm_tis_core.o
> 
> After:
>    text	   data	    bss	    dec	    hex	filename
>   18554	   3248	    128	  21930	   55aa	drivers/char/tpm/tpm_tis_core.o
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Reviewed-by: Jason Gunthorpe <jgunthorpe@...idianresearch.com>

Jason