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authorMarcelo Tosatti <mtosatti@redhat.com>2009-06-17 09:22:14 -0300
committerAvi Kivity <avi@redhat.com>2009-09-10 08:32:59 +0300
commit229456fc34b1c9031b04f7581e7b755d1cebfe9c (patch)
tree85fc0b54e9403d6ea059b8f7f78cea49594aaace /virt
parent219b65dcf6c0bad83d51bfa12e25891c02de2414 (diff)
downloadlinux-linaro-stable-229456fc34b1c9031b04f7581e7b755d1cebfe9c.tar.gz
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.c5
-rw-r--r--virt/kvm/kvm_main.c4
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);