From a013ba392843b2f65088f198a7125a78d48c6533 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Wed, 7 Nov 2018 23:19:41 +0000 Subject: [PATCH] MIPS: Hardcode cpu_has_mmips=1 for microMIPS kernels If we built the kernel targeting the microMIPS ISA then the very fact that the kernel is running implies that the CPU supports microMIPS. Thus we can hardcode cpu_has_mmips to 1 allowing the compiler greater scope for optimisation due to the compile-time constant. Signed-off-by: Paul Burton Patchwork: https://patchwork.linux-mips.org/patch/21022/ Cc: linux-mips@linux-mips.org --- arch/mips/include/asm/cpu-features.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index 0edba3e75747..8669fdb503a5 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -195,7 +195,9 @@ #endif #ifndef cpu_has_mmips -# ifdef CONFIG_SYS_SUPPORTS_MICROMIPS +# if defined(__mips_micromips) +# define cpu_has_mmips 1 +# elif defined(CONFIG_SYS_SUPPORTS_MICROMIPS) # define cpu_has_mmips __opt(MIPS_CPU_MICROMIPS) # else # define cpu_has_mmips 0 -- 2.45.2