From: Gleb Natapov <gleb@redhat.com>
To: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: Avi Kivity <avi@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
LKML <linux-kernel@vger.kernel.org>, KVM <kvm@vger.kernel.org>
Subject: Re: [PATCH 8/8] KVM: add debugfs file to show the number of async pf
Date: Wed, 27 Oct 2010 12:58:49 +0200 [thread overview]
Message-ID: <20101027105849.GQ26191@redhat.com> (raw)
In-Reply-To: <4CC7EC9B.6020507@cn.fujitsu.com>
On Wed, Oct 27, 2010 at 05:10:51PM +0800, Xiao Guangrong wrote:
> It can help us to see the state of async pf
>
I have patch to add three async pf statistics:
apf_not_present
apf_present
apf_doublefault
But Avi now wants to deprecate debugfs interface completely and move
towards ftrace, so I had to drop it.
> Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
> ---
> arch/x86/kvm/x86.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index c0e7ad0..2dd8059 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -88,6 +88,8 @@ static u64 __read_mostly efer_reserved_bits = 0xfffffffffffffffeULL;
>
> #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
> #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
> +#define VCPU_ASYNC_PF_STAT offsetof(struct kvm_vcpu, async_pf.queued), \
> + KVM_STAT_VCPU
>
> static void update_cr8_intercept(struct kvm_vcpu *vcpu);
> static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
> @@ -141,6 +143,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
> { "insn_emulation_fail", VCPU_STAT(insn_emulation_fail) },
> { "irq_injections", VCPU_STAT(irq_injections) },
> { "nmi_injections", VCPU_STAT(nmi_injections) },
> + { "async_pf_queued", VCPU_ASYNC_PF_STAT},
> { "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped) },
> { "mmu_pte_write", VM_STAT(mmu_pte_write) },
> { "mmu_pte_updated", VM_STAT(mmu_pte_updated) },
> --
> 1.7.0.4
>
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
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> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
Gleb.
next prev parent reply other threads:[~2010-10-27 10:58 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-27 9:01 [PATCH 1/8] KVM: fix tracing kvm_try_async_get_page Xiao Guangrong
2010-10-27 9:02 ` [PATCH 2/8] KVM: cleanup aysnc_pf tracepoints Xiao Guangrong
2010-10-27 10:10 ` Gleb Natapov
2010-10-27 9:03 ` [PATCH 3/8] KVM: fix searching async gfn in kvm_async_pf_gfn_slot Xiao Guangrong
2010-10-27 10:29 ` Gleb Natapov
2010-10-27 9:04 ` [PATCH 4/8] KVM: avoid unnecessary wait for a async pf Xiao Guangrong
2010-10-27 10:42 ` Gleb Natapov
2010-10-28 7:06 ` Xiao Guangrong
2010-10-27 9:05 ` [PATCH 5/8] KVM: don't touch vcpu stat after async pf is complete Xiao Guangrong
2010-10-27 10:44 ` Gleb Natapov
2010-10-28 7:35 ` Xiao Guangrong
2010-10-28 7:41 ` Gleb Natapov
2010-10-27 9:07 ` [PATCH 6/8] KVM: simply wakup async pf Xiao Guangrong
2010-10-27 10:50 ` Gleb Natapov
2010-10-28 7:59 ` Xiao Guangrong
2010-10-27 9:09 ` [PATCH 7/8] KVM: make async_pf work queue lockless Xiao Guangrong
2010-10-27 11:41 ` Gleb Natapov
2010-10-28 9:08 ` Xiao Guangrong
2010-10-28 9:14 ` Gleb Natapov
2010-10-27 9:10 ` [PATCH 8/8] KVM: add debugfs file to show the number of async pf Xiao Guangrong
2010-10-27 10:58 ` Gleb Natapov [this message]
2010-10-28 9:09 ` Xiao Guangrong
2010-10-27 9:59 ` [PATCH 1/8] KVM: fix tracing kvm_try_async_get_page Gleb Natapov
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