From 25828588412c1f951d72e1eda9e4320d422b7be5 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 17 May 2016 16:38:06 +0900 Subject: [PATCH] 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 Reviewed-by: York Sun --- arch/arm/cpu/armv8/cache.S | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/arch/arm/cpu/armv8/cache.S b/arch/arm/cpu/armv8/cache.S index a9f4fec387..1c71a2f616 100644 --- a/arch/arm/cpu/armv8/cache.S +++ b/arch/arm/cpu/armv8/cache.S @@ -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) /* -- 2.25.1