Commit aea1181b authored Dec 27, 2011 by Sam Ravnborg Committed by David S. Miller Dec 27, 2011

sparc32: support atomic64_t



There is no-one that really require atomic64_t support on sparc32.
But several drivers fails to build without proper atomic64 support.
And for an allyesconfig build for sparc32 this is annoying.

Include the generic atomic64_t support for sparc32.
This has a text footprint cost:

$size vmlinux (before atomic64_t support)
   text    data     bss     dec     hex filename
3578860  134260  108781 3821901  3a514d vmlinux

$size vmlinux (after atomic64_t support)
   text    data     bss     dec     hex filename
3579892  130684  108781 3819357  3a475d vmlinux

text increase (3579892 - 3578860) = 1032 bytes

data decreases - but I fail to explain why!
I have rebuild twice to check my numbers.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent ab17da5c

arch/sparc/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,7 @@ config SPARC

		config SPARC32
		def_bool !64BIT
		select GENERIC_ATOMIC64

		config SPARC64
		def_bool 64BIT

arch/sparc/include/asm/atomic_32.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -13,6 +13,8 @@

		#include <linux/types.h>

		#include <asm-generic/atomic64.h>

		#include <asm/system.h>

		#define ATOMIC_INIT(i) { (i) }