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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2009-06-17 09:22:14 -0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 08:32:59 +0300 |
| commit | 229456fc34b1c9031b04f7581e7b755d1cebfe9c (patch) | |
| tree | 85fc0b54e9403d6ea059b8f7f78cea49594aaace /virt | |
| parent | 219b65dcf6c0bad83d51bfa12e25891c02de2414 (diff) | |
| download | lwn-229456fc34b1c9031b04f7581e7b755d1cebfe9c.tar.gz lwn-229456fc34b1c9031b04f7581e7b755d1cebfe9c.zip | |
KVM: convert custom marker based tracing to event traces
This allows use of the powerful ftrace infrastructure.
See Documentation/trace/ for usage information.
[avi, stephen: various build fixes]
[sheng: fix control register breakage]
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/irq_comm.c | 5 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index bb8a1b5e41c1..94759ed96b64 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -20,6 +20,7 @@ */ #include <linux/kvm_host.h> +#include <trace/events/kvm.h> #include <asm/msidef.h> #ifdef CONFIG_IA64 @@ -125,6 +126,8 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level) unsigned long *irq_state, sig_level; int ret = -1; + trace_kvm_set_irq(irq); + WARN_ON(!mutex_is_locked(&kvm->irq_lock)); if (irq < KVM_IOAPIC_NUM_PINS) { @@ -161,6 +164,8 @@ void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin) struct hlist_node *n; unsigned gsi = pin; + trace_kvm_ack_irq(irqchip, pin); + list_for_each_entry(e, &kvm->irq_routing, link) if (e->type == KVM_IRQ_ROUTING_IRQCHIP && e->irqchip.irqchip == irqchip && diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 48d5e697bf44..04bdeddebdac 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -59,6 +59,9 @@ #include "irq.h" #endif +#define CREATE_TRACE_POINTS +#include <trace/events/kvm.h> + MODULE_AUTHOR("Qumranet"); MODULE_LICENSE("GPL"); @@ -2718,6 +2721,7 @@ EXPORT_SYMBOL_GPL(kvm_init); void kvm_exit(void) { kvm_trace_cleanup(); + tracepoint_synchronize_unregister(); misc_deregister(&kvm_dev); kmem_cache_destroy(kvm_vcpu_cache); sysdev_unregister(&kvm_sysdev); |