diff options
| -rw-r--r-- | virt/kvm/arm/arch_timer.c | 4 | ||||
| -rw-r--r-- | virt/kvm/arm/trace.h | 63 | ||||
| -rw-r--r-- | virt/kvm/arm/vgic.c | 5 |
3 files changed, 72 insertions, 0 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 523816d8c402..21a0ab2d8919 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -28,6 +28,8 @@ #include <kvm/arm_vgic.h> #include <kvm/arm_arch_timer.h> +#include "trace.h" + static struct timecounter *timecounter; static struct workqueue_struct *wqueue; static unsigned int host_vtimer_irq; @@ -129,6 +131,8 @@ static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level) BUG_ON(!vgic_initialized(vcpu->kvm)); timer->irq.level = new_level; + trace_kvm_timer_update_irq(vcpu->vcpu_id, timer->map->virt_irq, + timer->irq.level); ret = kvm_vgic_inject_mapped_irq(vcpu->kvm, vcpu->vcpu_id, timer->map, timer->irq.level); diff --git a/virt/kvm/arm/trace.h b/virt/kvm/arm/trace.h new file mode 100644 index 000000000000..37d8b98867d5 --- /dev/null +++ b/virt/kvm/arm/trace.h @@ -0,0 +1,63 @@ +#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_KVM_H + +#include <linux/tracepoint.h> + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM kvm + +/* + * Tracepoints for vgic + */ +TRACE_EVENT(vgic_update_irq_pending, + TP_PROTO(unsigned long vcpu_id, __u32 irq, bool level), + TP_ARGS(vcpu_id, irq, level), + + TP_STRUCT__entry( + __field( unsigned long, vcpu_id ) + __field( __u32, irq ) + __field( bool, level ) + ), + + TP_fast_assign( + __entry->vcpu_id = vcpu_id; + __entry->irq = irq; + __entry->level = level; + ), + + TP_printk("VCPU: %ld, IRQ %d, level: %d", + __entry->vcpu_id, __entry->irq, __entry->level) +); + +/* + * Tracepoints for arch_timer + */ +TRACE_EVENT(kvm_timer_update_irq, + TP_PROTO(unsigned long vcpu_id, __u32 irq, int level), + TP_ARGS(vcpu_id, irq, level), + + TP_STRUCT__entry( + __field( unsigned long, vcpu_id ) + __field( __u32, irq ) + __field( int, level ) + ), + + TP_fast_assign( + __entry->vcpu_id = vcpu_id; + __entry->irq = irq; + __entry->level = level; + ), + + TP_printk("VCPU: %ld, IRQ %d, level %d", + __entry->vcpu_id, __entry->irq, __entry->level) +); + +#endif /* _TRACE_KVM_H */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH ../../../virt/kvm/arm +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE trace + +/* This part must be outside protection */ +#include <trace/define_trace.h> diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 84abc6f38c1d..d4669eb29b77 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -34,6 +34,9 @@ #include <asm/kvm.h> #include <kvm/iodev.h> +#define CREATE_TRACE_POINTS +#include "trace.h" + /* * How the whole thing works (courtesy of Christoffer Dall): * @@ -1574,6 +1577,8 @@ static int vgic_update_irq_pending(struct kvm *kvm, int cpuid, int enabled; bool ret = true, can_inject = true; + trace_vgic_update_irq_pending(cpuid, irq_num, level); + if (irq_num >= min(kvm->arch.vgic.nr_irqs, 1020)) return -EINVAL; |