Re: [PATCH 2/8] ASoC pxa2xx I2S support

[Daniel Jacobowitz <drow@false.org>]

On Thu, Oct 12, 2006 at 11:47:16AM -0400, Nicolas Pitre wrote:
> > IIRC, the code size is reduced by omitting '= 0'.  That is why kernel
> > code prefers the style without '= 0'. 
> > Maybe it doesn't matter any more with the recetn gcc, though.
> 
> The reason is that global variables with explicit initial values are 
> allocated to the .data section which is always present in the kernel 
> binary.  When no explicit initial value is provided then the variable is 
> allocated to the .bss section which is _not_ included in the kernel 
> binary but initialized to zero at runtime.

GCC has included explicitly zero initialized variables in the .bss
section for a while now; this is controlled by
-fno-zero-initialized-in-bss.

-- 
Daniel Jacobowitz
CodeSourcery

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