Messages in this thread |  | | From | Guo Ren <> | Date | Wed, 28 Sep 2022 13:18:01 +0800 | Subject | Re: [PATCH v3 1/3] RISC-V: KVM: Record number of signal exits as a vCPU stat |
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Reviewed-by: Guo Ren <guoren@kernel.org>
➜ linux git:(master) grep signal_exits arch/arm64 -r arch/arm64/kvm/guest.c: STATS_DESC_COUNTER(VCPU, signal_exits), arch/arm64/include/asm/kvm_host.h: u64 signal_exits;
By the way, do you know why arm64 is defined, but not used?
On Mon, Sep 26, 2022 at 12:33 AM Jisheng Zhang <jszhang@kernel.org> wrote: > > Record a statistic indicating the number of times a vCPU has exited > due to a pending signal. > > Signed-off-by: Jisheng Zhang <jszhang@kernel.org> > --- > arch/riscv/include/asm/kvm_host.h | 1 + > arch/riscv/kvm/vcpu.c | 2 ++ > 2 files changed, 3 insertions(+) > > diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h > index 60c517e4d576..dbbf43d52623 100644 > --- a/arch/riscv/include/asm/kvm_host.h > +++ b/arch/riscv/include/asm/kvm_host.h > @@ -67,6 +67,7 @@ struct kvm_vcpu_stat { > u64 mmio_exit_kernel; > u64 csr_exit_user; > u64 csr_exit_kernel; > + u64 signal_exits; > u64 exits; > }; > > diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c > index d0f08d5b4282..3da459fedc28 100644 > --- a/arch/riscv/kvm/vcpu.c > +++ b/arch/riscv/kvm/vcpu.c > @@ -28,6 +28,7 @@ const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { > STATS_DESC_COUNTER(VCPU, mmio_exit_kernel), > STATS_DESC_COUNTER(VCPU, csr_exit_user), > STATS_DESC_COUNTER(VCPU, csr_exit_kernel), > + STATS_DESC_COUNTER(VCPU, signal_exits), > STATS_DESC_COUNTER(VCPU, exits) > }; > > @@ -973,6 +974,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) > if (signal_pending(current)) { > ret = -EINTR; > run->exit_reason = KVM_EXIT_INTR; > + ++vcpu->stat.signal_exits; > } > > /* > -- > 2.34.1 >
-- Best Regards Guo Ren
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