Reviewed-by: Guo Ren <guoren@xxxxxxxxxx>
➜ 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@xxxxxxxxxx> wrote:
>
> Record a statistic indicating the number of times a vCPU has exited
> due to a pending signal.
>
> Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxx>
> ---
> 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
