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arm64: optimize __asm_{flush, invalidate}_dcache_all 

__asm_dcache_all can directly return to the caller of
__asm_{flush,invalidate}_dcache_all.

We do not have to waste x16 register here.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Masahiro Yamada 2016-05-17 16:38:06 +09:00 committed by Tom Rini
parent 3d16389c90
commit 2582858841
1 changed files with 2 additions and 8 deletions
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10
arch/arm/cpu/armv8/cache.S
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@ -104,19 +104,13 @@ finished:
ENDPROC(__asm_dcache_all)
ENTRY(__asm_flush_dcache_all)
mov x16, lr
mov x0, #0
bl __asm_dcache_all
mov lr, x16
ret
b __asm_dcache_all
ENDPROC(__asm_flush_dcache_all)
ENTRY(__asm_invalidate_dcache_all)
mov x16, lr
mov x0, #0x1
bl __asm_dcache_all
mov lr, x16
ret
b __asm_dcache_all
ENDPROC(__asm_invalidate_dcache_all)
/*