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

From: Darren Hart
Date: Fri Aug 28 2015 - 13:51:12 EST


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@xxxxxxxxxxx>
>
> Acked-by: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>

Queued, thanks.

--
Darren Hart
Intel Open Source Technology Center
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