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Date: Tue, 04 Jun 2013 12:58:46 +0530 From: Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com> To: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com> CC: gleb@...hat.com, mingo@...hat.com, jeremy@...p.org, x86@...nel.org, hpa@...or.com, pbonzini@...hat.com, linux-doc@...r.kernel.org, habanero@...ux.vnet.ibm.com, xen-devel@...ts.xensource.com, peterz@...radead.org, mtosatti@...hat.com, stefano.stabellini@...citrix.com, andi@...stfloor.org, attilio.rao@...rix.com, ouyang@...pitt.edu, gregkh@...e.de, agraf@...e.de, chegu_vinod@...com, torvalds@...ux-foundation.org, avi.kivity@...il.com, tglx@...utronix.de, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, riel@...hat.com, drjones@...hat.com, virtualization@...ts.linux-foundation.org, srivatsa.vaddagiri@...il.com Subject: Re: [PATCH RFC V9 19/19] kvm hypervisor: Add directed yield in vcpu block path On 06/03/2013 09:35 PM, Konrad Rzeszutek Wilk wrote: > On Sun, Jun 02, 2013 at 12:56:45AM +0530, Raghavendra K T wrote: >> kvm hypervisor: Add directed yield in vcpu block path >> >> From: Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com> >> >> We use the improved PLE handler logic in vcpu block patch for >> scheduling rather than plain schedule, so that we can make >> intelligent decisions > > You are missing '.' there, and > Yep. >> >> Signed-off-by: Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com> >> --- >> arch/ia64/include/asm/kvm_host.h | 5 +++++ >> arch/powerpc/include/asm/kvm_host.h | 5 +++++ >> arch/s390/include/asm/kvm_host.h | 5 +++++ >> arch/x86/include/asm/kvm_host.h | 2 +- >> arch/x86/kvm/x86.c | 8 ++++++++ >> include/linux/kvm_host.h | 2 +- >> virt/kvm/kvm_main.c | 6 ++++-- >> 7 files changed, 29 insertions(+), 4 deletions(-) >> >> diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h >> index 989dd3f..999ab15 100644 >> --- a/arch/ia64/include/asm/kvm_host.h >> +++ b/arch/ia64/include/asm/kvm_host.h >> @@ -595,6 +595,11 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu); >> int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); >> void kvm_sal_emul(struct kvm_vcpu *vcpu); >> >> +static inline void kvm_do_schedule(struct kvm_vcpu *vcpu) >> +{ >> + schedule(); >> +} >> + >> #define __KVM_HAVE_ARCH_VM_ALLOC 1 >> struct kvm *kvm_arch_alloc_vm(void); >> void kvm_arch_free_vm(struct kvm *kvm); >> diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h >> index af326cd..1aeecc0 100644 >> --- a/arch/powerpc/include/asm/kvm_host.h >> +++ b/arch/powerpc/include/asm/kvm_host.h >> @@ -628,4 +628,9 @@ struct kvm_vcpu_arch { >> #define __KVM_HAVE_ARCH_WQP >> #define __KVM_HAVE_CREATE_DEVICE >> >> +static inline void kvm_do_schedule(struct kvm_vcpu *vcpu) >> +{ >> + schedule(); >> +} >> + >> #endif /* __POWERPC_KVM_HOST_H__ */ >> diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h >> index 16bd5d1..db09a56 100644 >> --- a/arch/s390/include/asm/kvm_host.h >> +++ b/arch/s390/include/asm/kvm_host.h >> @@ -266,4 +266,9 @@ struct kvm_arch{ >> }; >> >> extern int sie64a(struct kvm_s390_sie_block *, u64 *); >> +static inline void kvm_do_schedule(struct kvm_vcpu *vcpu) >> +{ >> + schedule(); >> +} >> + >> #endif >> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h >> index 95702de..72ff791 100644 >> --- a/arch/x86/include/asm/kvm_host.h >> +++ b/arch/x86/include/asm/kvm_host.h >> @@ -1042,5 +1042,5 @@ int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info); >> int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data); >> void kvm_handle_pmu_event(struct kvm_vcpu *vcpu); >> void kvm_deliver_pmi(struct kvm_vcpu *vcpu); >> - >> +void kvm_do_schedule(struct kvm_vcpu *vcpu); >> #endif /* _ASM_X86_KVM_HOST_H */ >> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c >> index b963c86..d26c4be 100644 >> --- a/arch/x86/kvm/x86.c >> +++ b/arch/x86/kvm/x86.c >> @@ -7281,6 +7281,14 @@ bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu) >> kvm_x86_ops->interrupt_allowed(vcpu); >> } >> >> +void kvm_do_schedule(struct kvm_vcpu *vcpu) >> +{ >> + /* We try to yield to a kikced vcpu else do a schedule */ > > s/kikced/kicked/ :(. Thanks .. will change that. > [...] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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