diff options
| author | Andrey Smetanin | 2015-12-23 16:54:00 +0300 |
|---|---|---|
| committer | Paolo Bonzini | 2016-01-08 19:04:43 +0100 |
| commit | ac3e5fcae8ca658e7dcc3fdcd50af7e4779f58c1 (patch) | |
| tree | 37a76f87d2f8deacc228a4928dfb8d185e7edfc8 /arch/x86/kvm/hyperv.c | |
| parent | 18659a9cb1885d00dd428f8857f7f628e54a45ee (diff) | |
kvm/x86: Hyper-V SynIC timers tracepoints
Trace the following Hyper SynIC timers events:
* periodic timer start
* one-shot timer start
* timer callback
* timer expiration and message delivery result
* timer config setup
* timer count setup
* timer cleanup
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/hyperv.c')
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 2d83d4598507..c58ba67175ac 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -405,6 +405,9 @@ static void stimer_cleanup(struct kvm_vcpu_hv_stimer *stimer) { struct kvm_vcpu *vcpu = stimer_to_vcpu(stimer); + trace_kvm_hv_stimer_cleanup(stimer_to_vcpu(stimer)->vcpu_id, + stimer->index); + hrtimer_cancel(&stimer->timer); clear_bit(stimer->index, vcpu_to_hv_vcpu(vcpu)->stimer_pending_bitmap); @@ -417,6 +420,8 @@ static enum hrtimer_restart stimer_timer_callback(struct hrtimer *timer) struct kvm_vcpu_hv_stimer *stimer; stimer = container_of(timer, struct kvm_vcpu_hv_stimer, timer); + trace_kvm_hv_stimer_callback(stimer_to_vcpu(stimer)->vcpu_id, + stimer->index); stimer_mark_pending(stimer, true); return HRTIMER_NORESTART; @@ -448,6 +453,11 @@ static int stimer_start(struct kvm_vcpu_hv_stimer *stimer) } else stimer->exp_time = time_now + stimer->count; + trace_kvm_hv_stimer_start_periodic( + stimer_to_vcpu(stimer)->vcpu_id, + stimer->index, + time_now, stimer->exp_time); + hrtimer_start(&stimer->timer, ktime_add_ns(ktime_now, 100 * (stimer->exp_time - time_now)), @@ -466,6 +476,10 @@ static int stimer_start(struct kvm_vcpu_hv_stimer *stimer) return 0; } + trace_kvm_hv_stimer_start_one_shot(stimer_to_vcpu(stimer)->vcpu_id, + stimer->index, + time_now, stimer->count); + hrtimer_start(&stimer->timer, ktime_add_ns(ktime_now, 100 * (stimer->count - time_now)), HRTIMER_MODE_ABS); @@ -475,6 +489,9 @@ static int stimer_start(struct kvm_vcpu_hv_stimer *stimer) static int stimer_set_config(struct kvm_vcpu_hv_stimer *stimer, u64 config, bool host) { + trace_kvm_hv_stimer_set_config(stimer_to_vcpu(stimer)->vcpu_id, + stimer->index, config, host); + stimer_cleanup(stimer); if ((stimer->config & HV_STIMER_ENABLE) && HV_STIMER_SINT(config) == 0) config &= ~HV_STIMER_ENABLE; @@ -486,6 +503,9 @@ static int stimer_set_config(struct kvm_vcpu_hv_stimer *stimer, u64 config, static int stimer_set_count(struct kvm_vcpu_hv_stimer *stimer, u64 count, bool host) { + trace_kvm_hv_stimer_set_count(stimer_to_vcpu(stimer)->vcpu_id, + stimer->index, count, host); + stimer_cleanup(stimer); stimer->count = count; if (stimer->count == 0) @@ -564,8 +584,13 @@ static int stimer_send_msg(struct kvm_vcpu_hv_stimer *stimer) static void stimer_expiration(struct kvm_vcpu_hv_stimer *stimer) { + int r; + stimer->msg_pending = true; - if (!stimer_send_msg(stimer)) { + r = stimer_send_msg(stimer); + trace_kvm_hv_stimer_expiration(stimer_to_vcpu(stimer)->vcpu_id, + stimer->index, r); + if (!r) { stimer->msg_pending = false; if (!(stimer->config & HV_STIMER_PERIODIC)) stimer->config &= ~HV_STIMER_ENABLE; |