mips/kvm: Use BUG_ON instead of if condition followed by BUG

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

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>

authored by

zhouchuangao and committed by

Thomas Bogendoerfer 4 years ago a2cdc24e f9cd46a4

+1 -2

1 changed file

expand all

arch

mips

kvm

tlb.c

+1 -2

arch/mips/kvm/tlb.c

··· 58 58 tlb_probe_hazard(); 59 59 idx = read_c0_index(); 60 60 61 - if (idx >= current_cpu_data.tlbsize) 62 - BUG(); 61 + BUG_ON(idx >= current_cpu_data.tlbsize); 63 62 64 63 if (idx >= 0) { 65 64 write_c0_entryhi(UNIQUE_ENTRYHI(idx));