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kernel.h: remove initialization of bool in printk_once

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Don't initialize __print_once.  Invert the test to reduce initialized
data.

defconfig before:	$size vmlinux
   text	   data	    bss	    dec	    hex	filename
6976022	 679572	1359668	9015262	 898fde	vmlinux

defconfig after:	$size vmlinux
   text	   data	    bss	    dec	    hex	filename
6976006	 679508	1359700	9015214	 898fae	vmlinux

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2009-12-14 18:00:19 -08:00 committed by Linus Torvalds
parent 196a15b4ee
commit 0b2749aa6c
1 changed files with 3 additions and 3 deletions
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6
include/linux/kernel.h
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@ -251,10 +251,10 @@ extern int printk_delay_msec;
* Print a one-time message (analogous to WARN_ONCE() et al):
*/
#define printk_once(x...) ({ \
static bool __print_once = true; \
static bool __print_once; \
\
if (__print_once) { \
__print_once = false; \
if (!__print_once) { \
__print_once = true; \
printk(x); \
} \
})