linux-kernel - [PATCH] x86: Simplify the return expression

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Message-Id: <20210326112724.1563-1-zuoqilin1@163.com>
Date:   Fri, 26 Mar 2021 19:27:24 +0800
From:   zuoqilin1@....com
To:     mingo@...hat.com, bp@...en8.de, x86@...nel.org, hpa@...or.com
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        zuoqilin <zuoqilin@...ong.com>
Subject: [PATCH] x86: Simplify the return expression

From: zuoqilin <zuoqilin@...ong.com>

Simplify the return expression of kvm_compute_tsc_offset().

Signed-off-by: zuoqilin <zuoqilin@...ong.com>
---
 arch/x86/kvm/x86.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index fe806e8..3906c1b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2209,11 +2209,7 @@ u64 kvm_scale_tsc(struct kvm_vcpu *vcpu, u64 tsc)
 
 static u64 kvm_compute_tsc_offset(struct kvm_vcpu *vcpu, u64 target_tsc)
 {
-	u64 tsc;
-
-	tsc = kvm_scale_tsc(vcpu, rdtsc());
-
-	return target_tsc - tsc;
+	return target_tsc - kvm_scale_tsc(vcpu, rdtsc());
 }
 
 u64 kvm_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc)
-- 
1.9.1