On Thursday, September 20, 2018 8:32 PM, Peter Zijlstra wrote:
> On Thu, Sep 20, 2018 at 06:05:58PM +0800, Wei Wang wrote:
> How do you deal with that situation, where the LBR is in use by a host event?
I guess you were referring to this use case: "perf record -b
qemu-system-x86_64..", where the
On Thursday, September 20, 2018 8:32 PM, Peter Zijlstra wrote:
> On Thu, Sep 20, 2018 at 06:05:58PM +0800, Wei Wang wrote:
> How do you deal with that situation, where the LBR is in use by a host event?
I guess you were referring to this use case: "perf record -b
qemu-system-x86_64..", where the
On Friday, September 21, 2018 12:24 AM, Peter Zijlstra wrote:
> On Thu, Sep 20, 2018 at 08:30:35AM -0700, Andi Kleen wrote:
> > > +int intel_pmu_enable_save_guest_lbr(struct kvm_vcpu *vcpu) {
> > > + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
> > > + struct perf_event *event;
> > > + struct
On Friday, September 21, 2018 12:24 AM, Peter Zijlstra wrote:
> On Thu, Sep 20, 2018 at 08:30:35AM -0700, Andi Kleen wrote:
> > > +int intel_pmu_enable_save_guest_lbr(struct kvm_vcpu *vcpu) {
> > > + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
> > > + struct perf_event *event;
> > > + struct
On Thursday, September 20, 2018 11:31 PM, Andi Kleen wrote:
> > +int intel_pmu_enable_save_guest_lbr(struct kvm_vcpu *vcpu) {
> > + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
> > + struct perf_event *event;
> > + struct perf_event_attr attr = {
> > + .type = PERF_TYPE_RAW,
> > +
On Thursday, September 20, 2018 11:31 PM, Andi Kleen wrote:
> > +int intel_pmu_enable_save_guest_lbr(struct kvm_vcpu *vcpu) {
> > + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
> > + struct perf_event *event;
> > + struct perf_event_attr attr = {
> > + .type = PERF_TYPE_RAW,
> > +
On Thu, Sep 20, 2018 at 08:30:35AM -0700, Andi Kleen wrote:
> > +int intel_pmu_enable_save_guest_lbr(struct kvm_vcpu *vcpu)
> > +{
> > + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
> > + struct perf_event *event;
> > + struct perf_event_attr attr = {
> > + .type = PERF_TYPE_RAW,
> > +
On Thu, Sep 20, 2018 at 08:30:35AM -0700, Andi Kleen wrote:
> > +int intel_pmu_enable_save_guest_lbr(struct kvm_vcpu *vcpu)
> > +{
> > + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
> > + struct perf_event *event;
> > + struct perf_event_attr attr = {
> > + .type = PERF_TYPE_RAW,
> > +
> +int intel_pmu_enable_save_guest_lbr(struct kvm_vcpu *vcpu)
> +{
> + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
> + struct perf_event *event;
> + struct perf_event_attr attr = {
> + .type = PERF_TYPE_RAW,
> + .size = sizeof(attr),
> + .pinned = true,
> +int intel_pmu_enable_save_guest_lbr(struct kvm_vcpu *vcpu)
> +{
> + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
> + struct perf_event *event;
> + struct perf_event_attr attr = {
> + .type = PERF_TYPE_RAW,
> + .size = sizeof(attr),
> + .pinned = true,
On Thu, Sep 20, 2018 at 06:05:58PM +0800, Wei Wang wrote:
> diff --git a/arch/x86/kvm/pmu_intel.c b/arch/x86/kvm/pmu_intel.c
> index 5ab4a36..97a29d7 100644
> --- a/arch/x86/kvm/pmu_intel.c
> +++ b/arch/x86/kvm/pmu_intel.c
> @@ -342,6 +342,47 @@ static void intel_pmu_reset(struct kvm_vcpu *vcpu)
On Thu, Sep 20, 2018 at 06:05:58PM +0800, Wei Wang wrote:
> diff --git a/arch/x86/kvm/pmu_intel.c b/arch/x86/kvm/pmu_intel.c
> index 5ab4a36..97a29d7 100644
> --- a/arch/x86/kvm/pmu_intel.c
> +++ b/arch/x86/kvm/pmu_intel.c
> @@ -342,6 +342,47 @@ static void intel_pmu_reset(struct kvm_vcpu *vcpu)
On Thu, Sep 20, 2018 at 06:05:58PM +0800, Wei Wang wrote:
> diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
> index 1562863..a91fdef 100644
> --- a/arch/x86/events/perf_event.h
> +++ b/arch/x86/events/perf_event.h
> @@ -223,6 +223,7 @@ struct cpu_hw_events {
>*/
>
On Thu, Sep 20, 2018 at 06:05:58PM +0800, Wei Wang wrote:
> diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
> index 1562863..a91fdef 100644
> --- a/arch/x86/events/perf_event.h
> +++ b/arch/x86/events/perf_event.h
> @@ -223,6 +223,7 @@ struct cpu_hw_events {
>*/
>
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