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| author | Oliver Upton <oupton@google.com> | 2021-08-02 21:28:07 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-08-19 12:19:41 +0200 |
| commit | fe5161d2c39b8c2801f0e786631460c6e8a1cae4 (patch) | |
| tree | c119bf6993ab80db21ca5eb0172d1210ddd2f3d0 /arch/arm64/kvm | |
| parent | Linux 5.14-rc4 (diff) | |
| download | linux-fe5161d2c39b8c2801f0e786631460c6e8a1cae4.tar.xz linux-fe5161d2c39b8c2801f0e786631460c6e8a1cae4.zip | |
KVM: arm64: Record number of signal exits as a vCPU stat
Most other architectures that implement KVM record a statistic
indicating the number of times a vCPU has exited due to a pending
signal. Add support for that stat to arm64.
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210802192809.1851010-2-oupton@google.com
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/arm.c | 1 | ||||
| -rw-r--r-- | arch/arm64/kvm/guest.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index e9a2b8f27792..60d0a546d7fd 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -783,6 +783,7 @@ 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; } /* diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 1dfb83578277..853d1e8d2e73 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -50,6 +50,7 @@ const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { STATS_DESC_COUNTER(VCPU, wfi_exit_stat), STATS_DESC_COUNTER(VCPU, mmio_exit_user), STATS_DESC_COUNTER(VCPU, mmio_exit_kernel), + STATS_DESC_COUNTER(VCPU, signal_exits), STATS_DESC_COUNTER(VCPU, exits) }; static_assert(ARRAY_SIZE(kvm_vcpu_stats_desc) == |