Re: [PATCH] ext4: Reduce object size when !CONFIG_PRINTK

From: Theodore Ts'o
Date: Tue Jun 18 2013 - 11:14:49 EST


On Tue, Jun 04, 2013 at 07:55:05PM -0700, Joe Perches wrote:
> Reduce the object size ~10% could be useful for embedded
> systems.
>
> Add #ifdef CONFIG_PRINTK #else #endif blocks
> to hold formats and arguments, passing " " to
> functions when !CONFIG_PRINTK and still verifying
> format and arguments with no_printk.
>
> $ size fs/ext4/built-in.o*
> text data bss dec hex filename
> 239375 610 888 240873 3ace9 fs/ext4/built-in.o.new
> 264167 738 888 265793 40e41 fs/ext4/built-in.o.old
>
> $ grep -E "CONFIG_EXT4|CONFIG_PRINTK" .config
> # CONFIG_PRINTK is not set
> CONFIG_EXT4_FS=y
> CONFIG_EXT4_USE_FOR_EXT23=y
> CONFIG_EXT4_FS_POSIX_ACL=y
> # CONFIG_EXT4_FS_SECURITY is not set
> # CONFIG_EXT4_DEBUG is not set
>
> Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>

Applied, thanks.

- Ted
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