search for: d_spin_debug

...u); +#ifdef CONFIG_XEN_DEBUG_FS + pv_lock_ops.lockstat = PV_CALLEE_SAVE(xen_lock_stats); +#endif +#else pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(xen_lock_spinning); pv_lock_ops.unlock_kick = xen_unlock_kick; +#endif } /* @@ -321,6 +444,7 @@ static int __init xen_spinlock_debugfs(void) d_spin_debug = debugfs_create_dir("spinlocks", d_xen); +#ifndef CONFIG_QUEUE_SPINLOCK debugfs_create_u8("zero_stats", 0644, d_spin_debug, &zero_stats); debugfs_create_u32("taken_slow", 0444, d_spin_debug, @@ -340,7 +464,22 @@ static int __init xen_spinlock_debugfs(void)...

...u); +#ifdef CONFIG_XEN_DEBUG_FS + pv_lock_ops.lockstat = PV_CALLEE_SAVE(xen_lock_stats); +#endif +#else pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(xen_lock_spinning); pv_lock_ops.unlock_kick = xen_unlock_kick; +#endif } /* @@ -321,6 +444,7 @@ static int __init xen_spinlock_debugfs(void) d_spin_debug = debugfs_create_dir("spinlocks", d_xen); +#ifndef CONFIG_QUEUE_SPINLOCK debugfs_create_u8("zero_stats", 0644, d_spin_debug, &zero_stats); debugfs_create_u32("taken_slow", 0444, d_spin_debug, @@ -340,7 +464,22 @@ static int __init xen_spinlock_debugfs(void)...

...xen_kick_cpu; + pv_lock_ops.hibernate = xen_hibernate; + pv_lock_ops.lockstat = xen_lock_stats; +#else pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(xen_lock_spinning); pv_lock_ops.unlock_kick = xen_unlock_kick; +#endif } /* @@ -318,6 +414,7 @@ static int __init xen_spinlock_debugfs(void) d_spin_debug = debugfs_create_dir("spinlocks", d_xen); +#ifndef CONFIG_QUEUE_SPINLOCK debugfs_create_u8("zero_stats", 0644, d_spin_debug, &zero_stats); debugfs_create_u32("taken_slow", 0444, d_spin_debug, @@ -337,7 +434,19 @@ static int __init xen_spinlock_debugfs(void)...

...ontention_stat { > TAKEN_SLOW, > TAKEN_SLOW_PICKUP, > @@ -794,6 +795,134 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) > } > } > } > +#else /* !CONFIG_QUEUE_SPINLOCK */ > + > +#ifdef CONFIG_KVM_DEBUG_FS > +static struct dentry *d_spin_debug; > +static struct dentry *d_kvm_debug; > +static u32 kick_nohlt_stats; /* Kick but not halt count */ > +static u32 halt_qhead_stats; /* Queue head halting count */ > +static u32 halt_qnode_stats; /* Queue node halting count */ > +static u32 halt_abort_stats; /* Halting abort count *...

...ontention_stat { > TAKEN_SLOW, > TAKEN_SLOW_PICKUP, > @@ -794,6 +795,134 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) > } > } > } > +#else /* !CONFIG_QUEUE_SPINLOCK */ > + > +#ifdef CONFIG_KVM_DEBUG_FS > +static struct dentry *d_spin_debug; > +static struct dentry *d_kvm_debug; > +static u32 kick_nohlt_stats; /* Kick but not halt count */ > +static u32 halt_qhead_stats; /* Queue head halting count */ > +static u32 halt_qnode_stats; /* Queue node halting count */ > +static u32 halt_abort_stats; /* Halting abort count *...

...cpu); +#ifndef CONFIG_QUEUE_SPINLOCK enum kvm_contention_stat { TAKEN_SLOW, TAKEN_SLOW_PICKUP, @@ -804,6 +806,132 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) } } } +#else /* !CONFIG_QUEUE_SPINLOCK */ + +#ifdef CONFIG_KVM_DEBUG_FS +static struct dentry *d_spin_debug; +static struct dentry *d_kvm_debug; +static u32 kick_nohlt_stats; /* Kick but not halt count */ +static u32 halt_qhead_stats; /* Queue head halting count */ +static u32 halt_qnode_stats; /* Queue node halting count */ +static u32 halt_abort_stats; /* Halting abort count */ +static u32 wake_kick_s...

...cpu); +#ifndef CONFIG_QUEUE_SPINLOCK enum kvm_contention_stat { TAKEN_SLOW, TAKEN_SLOW_PICKUP, @@ -804,6 +806,132 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) } } } +#else /* !CONFIG_QUEUE_SPINLOCK */ + +#ifdef CONFIG_KVM_DEBUG_FS +static struct dentry *d_spin_debug; +static struct dentry *d_kvm_debug; +static u32 kick_nohlt_stats; /* Kick but not halt count */ +static u32 halt_qhead_stats; /* Queue head halting count */ +static u32 halt_qnode_stats; /* Queue node halting count */ +static u32 halt_abort_stats; /* Halting abort count */ +static u32 wake_kick_s...

...); } +#ifndef CONFIG_QUEUE_SPINLOCK enum kvm_contention_stat { TAKEN_SLOW, TAKEN_SLOW_PICKUP, @@ -794,6 +795,134 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) } } } +#else /* !CONFIG_QUEUE_SPINLOCK */ + +#ifdef CONFIG_KVM_DEBUG_FS +static struct dentry *d_spin_debug; +static struct dentry *d_kvm_debug; +static u32 kick_nohlt_stats; /* Kick but not halt count */ +static u32 halt_qhead_stats; /* Queue head halting count */ +static u32 halt_qnode_stats; /* Queue node halting count */ +static u32 halt_abort_stats; /* Halting abort count */ +static u32 wake_kick_s...

...d); } +#ifndef CONFIG_QUEUE_SPINLOCK enum kvm_contention_stat { TAKEN_SLOW, TAKEN_SLOW_PICKUP, @@ -795,6 +796,55 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) } } } +#else /* !CONFIG_QUEUE_SPINLOCK */ + +#ifdef CONFIG_KVM_DEBUG_FS +static struct dentry *d_spin_debug; +static struct dentry *d_kvm_debug; +static u32 lh_kick_stats; /* Lock holder kick count */ +static u32 qh_kick_stats; /* Queue head kick count */ +static u32 nn_kick_stats; /* Next node kick count */ + +static int __init kvm_spinlock_debugfs(void) +{ + d_kvm_debug = debugfs_create_dir("kv...

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Changes in V4: - reabsed to 3.2.0 pre. - use APIC

The 5-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. Changes in V4: - reabsed to 3.2.0 pre. - use APIC

...d); } +#ifndef CONFIG_QUEUE_SPINLOCK enum kvm_contention_stat { TAKEN_SLOW, TAKEN_SLOW_PICKUP, @@ -795,6 +796,87 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) } } } +#else /* !CONFIG_QUEUE_SPINLOCK */ + +#ifdef CONFIG_KVM_DEBUG_FS +static struct dentry *d_spin_debug; +static struct dentry *d_kvm_debug; +static u32 lh_kick_stats; /* Lock holder kick count */ +static u32 qh_kick_stats; /* Queue head kick count */ +static u32 hibernate_stats; /* Hibernation count */ + +static int __init kvm_spinlock_debugfs(void) +{ + d_kvm_debug = debugfs_create_dir("kvm...

...contention_stat { > TAKEN_SLOW, > TAKEN_SLOW_PICKUP, > @@ -795,6 +796,55 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) > } > } > } > +#else /* !CONFIG_QUEUE_SPINLOCK */ > + > +#ifdef CONFIG_KVM_DEBUG_FS > +static struct dentry *d_spin_debug; > +static struct dentry *d_kvm_debug; > +static u32 lh_kick_stats; /* Lock holder kick count */ > +static u32 qh_kick_stats; /* Queue head kick count */ > +static u32 nn_kick_stats; /* Next node kick count */ > + > +static int __init kvm_spinlock_debugfs(void) > +{ > + d...

...contention_stat { > TAKEN_SLOW, > TAKEN_SLOW_PICKUP, > @@ -795,6 +796,55 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) > } > } > } > +#else /* !CONFIG_QUEUE_SPINLOCK */ > + > +#ifdef CONFIG_KVM_DEBUG_FS > +static struct dentry *d_spin_debug; > +static struct dentry *d_kvm_debug; > +static u32 lh_kick_stats; /* Lock holder kick count */ > +static u32 qh_kick_stats; /* Queue head kick count */ > +static u32 nn_kick_stats; /* Next node kick count */ > + > +static int __init kvm_spinlock_debugfs(void) > +{ > + d...

...d); } +#ifndef CONFIG_QUEUE_SPINLOCK enum kvm_contention_stat { TAKEN_SLOW, TAKEN_SLOW_PICKUP, @@ -795,6 +796,82 @@ static void kvm_unlock_kick(struct arch_spinlock *lock, __ticket_t ticket) } } } +#else /* !CONFIG_QUEUE_SPINLOCK */ + +#ifdef CONFIG_KVM_DEBUG_FS +static struct dentry *d_spin_debug; +static struct dentry *d_kvm_debug; +static u32 kick_stats; /* CPU kick count */ +static u32 hibernate_stats; /* Hibernation count */ + +static int __init kvm_spinlock_debugfs(void) +{ + d_kvm_debug = debugfs_create_dir("kvm-guest", NULL); + if (!d_kvm_debug) { + printk(KERN_WARNING...

The 4-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. The V2 change discussion was in:

The 4-patch series to follow this email extends KVM-hypervisor and Linux guest running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's implementation. One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick another vcpu out of halt state. The blocking of vcpu is done using halt() in (lock_spinning) slowpath. The V2 change discussion was in:

This series replaces the existing paravirtualized spinlock mechanism with a paravirtualized ticketlock mechanism. The series provides implementation for both Xen and KVM. The current set of patches are for Xen/x86 spinlock/KVM guest side, to be included against -tip. I 'll be sending a separate patchset for KVM host based on kvm tree. Please note I have added the below performance result

This series replaces the existing paravirtualized spinlock mechanism with a paravirtualized ticketlock mechanism. The series provides implementation for both Xen and KVM. The current set of patches are for Xen/x86 spinlock/KVM guest side, to be included against -tip. I 'll be sending a separate patchset for KVM host based on kvm tree. Please note I have added the below performance result

This series replaces the existing paravirtualized spinlock mechanism with a paravirtualized ticketlock mechanism. The series provides implementation for both Xen and KVM. The current set of patches are for Xen/x86 spinlock/KVM guest side, to be included against -tip. I 'll be sending a separate patchset for KVM host based on kvm tree. Please note I have added the below performance result