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Re: [PATCH] thinkpad_acpi: Remove side effects from vdbg_printk -> no_printk macro

From Darren Hart <dvhart@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH] thinkpad_acpi: Remove side effects from vdbg_printk -> no_printk macro
Date 2015-08-28 20:00 +0200
Message-ID <q2w6u-21Z-23@gated-at.bofh.it> (permalink)
References <q1NsJ-55Y-11@gated-at.bofh.it> <q29jB-2Rz-31@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Aug 27, 2015 at 02:33:06PM -0300, Henrique de Moraes Holschuh wrote:
> On Wed, 26 Aug 2015, Joe Perches wrote:
> > vdbg_printk when not using CONFIG_THINKPAD_ACPI_DEBUG uses
> > no_printk which produces no logging output but always
> > evaluates arguments.
> > 
> > Change the macro to surround the no_printk call with
> > 	do { if (0) no_printk(...); } while (0)
> > to avoid the unnecessary argument evaluations.
> > 
> > $ size drivers/platform/x86/thinkpad_acpi.o*
> >    text	   data	    bss	    dec	    hex	filename
> >   60918	   6184	    824	  67926	  10956	drivers/platform/x86/thinkpad_acpi.o.new
> >   60927	   6184	    824	  67935	  1095f	drivers/platform/x86/thinkpad_acpi.o.old
> > 
> > Signed-off-by: Joe Perches <joe@perches.com>
> 
> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>

Queued, thanks.

-- 
Darren Hart
Intel Open Source Technology Center
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Thread

[PATCH] thinkpad_acpi: Remove side effects from vdbg_printk ->  no_printk macro Joe Perches <joe@perches.com> - 2015-08-26 20:20 +0200
  Re: [PATCH] thinkpad_acpi: Remove side effects from vdbg_printk ->  no_printk macro Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2015-08-26 20:30 +0200
    Re: [PATCH] thinkpad_acpi: Remove side effects from vdbg_printk ->  no_printk macro Joe Perches <joe@perches.com> - 2015-08-26 20:40 +0200
      Re: [PATCH] thinkpad_acpi: Remove side effects from vdbg_printk ->  no_printk macro Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2015-08-27 19:40 +0200
  Re: [PATCH] thinkpad_acpi: Remove side effects from vdbg_printk ->  no_printk macro Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2015-08-27 19:40 +0200
    Re: [PATCH] thinkpad_acpi: Remove side effects from vdbg_printk ->  no_printk macro Darren Hart <dvhart@infradead.org> - 2015-08-28 20:00 +0200

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