From a2cdc24e20573cf719f3171071368f4f7781d970 Mon Sep 17 00:00:00 2001
From: zhouchuangao <zhouchuangao@vivo.com>
Date: Fri, 23 Apr 2021 01:35:09 -0700
Subject: [PATCH] mips/kvm: Use BUG_ON instead of if condition followed by BUG
BUG_ON uses unlikely in if(), it can be optimized at compile time.
Usually, the condition in if() is not satisfied. In my opinion,
this can improve the efficiency of the multi-stage pipeline.
Signed-off-by: zhouchuangao <zhouchuangao@vivo.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---
arch/mips/kvm/tlb.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c
index 1088114e5482..a3b50d5e3b25 100644
--- a/arch/mips/kvm/tlb.c
+++ b/arch/mips/kvm/tlb.c
@@ -58,8 +58,7 @@ static int _kvm_mips_host_tlb_inv(unsigned long entryhi)
tlb_probe_hazard();
idx = read_c0_index();
- if (idx >= current_cpu_data.tlbsize)
- BUG();
+ BUG_ON(idx >= current_cpu_data.tlbsize);
if (idx >= 0) {
write_c0_entryhi(UNIQUE_ENTRYHI(idx));
--
2.30.9