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RISC-V: KVM: Record number of signal exits as a vCPU stat

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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>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org
This commit is contained in:
Jisheng Zhang 2022-10-02 10:19:16 +05:30 committed by Anup Patel
parent f493cdc92d
commit 54ce3f7ff3
2 changed files with 3 additions and 0 deletions
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1
arch/riscv/include/asm/kvm_host.h
View file

@ -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;
};

2
arch/riscv/kvm/vcpu.c
View file

@ -29,6 +29,7 @@ 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)
};
@ -993,6 +994,7 @@ 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;
}
/*