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....kt at linux.vnet.ibm.com> > --- > arch/x86/kernel/kvm.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++++ > kernel/Kconfig.locks | 2 +- > 2 files changed, 136 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c > index 7ab8ab3..eef427b 100644 > --- a/arch/x86/kernel/kvm.c > +++ b/arch/x86/kernel/kvm.c > @@ -567,6 +567,7 @@ static void kvm_kick_cpu(int cpu) > kvm_hypercall2(KVM_HC_KICK_CPU, flags, apicid); > } > > +#ifndef CONFIG_QUEUE_SPINLOCK > enum kvm_contention_stat { > TAKEN_SLOW,...

....kt at linux.vnet.ibm.com> > --- > arch/x86/kernel/kvm.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++++ > kernel/Kconfig.locks | 2 +- > 2 files changed, 136 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c > index 7ab8ab3..eef427b 100644 > --- a/arch/x86/kernel/kvm.c > +++ b/arch/x86/kernel/kvm.c > @@ -567,6 +567,7 @@ static void kvm_kick_cpu(int cpu) > kvm_hypercall2(KVM_HC_KICK_CPU, flags, apicid); > } > > +#ifndef CONFIG_QUEUE_SPINLOCK > enum kvm_contention_stat { > TAKEN_SLOW,...

...by: Raghavendra K T <raghavendra.kt at linux.vnet.ibm.com> --- arch/x86/kernel/kvm.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++++ kernel/Kconfig.locks | 2 +- 2 files changed, 136 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 7ab8ab3..eef427b 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -567,6 +567,7 @@ static void kvm_kick_cpu(int cpu) kvm_hypercall2(KVM_HC_KICK_CPU, flags, apicid); } +#ifndef CONFIG_QUEUE_SPINLOCK enum kvm_contention_stat { TAKEN_SLOW, TAKEN_SLOW_PICKUP, @@ -794,6 +795,134 @@ st...

v9->v10: - Make some minor changes to qspinlock.c to accommodate review feedback. - Change author to PeterZ for 2 of the patches. - Include Raghavendra KT's test results in patch 18. v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex

v9->v10: - Make some minor changes to qspinlock.c to accommodate review feedback. - Change author to PeterZ for 2 of the patches. - Include Raghavendra KT's test results in patch 18. v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex

v10->v11: - Use a simple test-and-set unfair lock to simplify the code, but performance may suffer a bit for large guest with many CPUs. - Take out Raghavendra KT's test results as the unfair lock changes may render some of his results invalid. - Add PV support without increasing the size of the core queue node structure. - Other minor changes to address some of the

v10->v11: - Use a simple test-and-set unfair lock to simplify the code, but performance may suffer a bit for large guest with many CPUs. - Take out Raghavendra KT's test results as the unfair lock changes may render some of his results invalid. - Add PV support without increasing the size of the core queue node structure. - Other minor changes to address some of the

v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex patches into smaller ones to ease review effort. - Fix a racing condition in the PV qspinlock code. v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving

v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex patches into smaller ones to ease review effort. - Fix a racing condition in the PV qspinlock code. v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving