diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index ccc06b1b91b56e5d198b78e3c70e0f4a211b19d8..714f6a7841cdfbec2bf408153682d00b4b814a12 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include "kvm_svm.h" @@ -1558,6 +1559,13 @@ static int svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) reload_tss(vcpu); + /* + * Profile KVM exit RIPs: + */ + if (unlikely(prof_on == KVM_PROFILING)) + profile_hit(KVM_PROFILING, + (void *)(unsigned long)vcpu->svm->vmcb->save.rip); + stgi(); kvm_reput_irq(vcpu); diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index d4701cb4c65424e6b5d9267f2347c42445632ccf..ce219e3f557fecfbe64aadf71bc6cad1ca17cb1f 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -1859,6 +1860,12 @@ static int vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) asm ("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS)); #endif + /* + * Profile KVM exit RIPs: + */ + if (unlikely(prof_on == KVM_PROFILING)) + profile_hit(KVM_PROFILING, (void *)vmcs_readl(GUEST_RIP)); + kvm_run->exit_type = 0; if (fail) { kvm_run->exit_type = KVM_EXIT_TYPE_FAIL_ENTRY; diff --git a/include/linux/profile.h b/include/linux/profile.h index 5670b340c4ef4d7b5561f7d5635e4386a135b11b..eec48f5f9348efd17ba2fd47d6a4d38cc31be100 100644 --- a/include/linux/profile.h +++ b/include/linux/profile.h @@ -15,6 +15,7 @@ extern int prof_on __read_mostly; #define CPU_PROFILING 1 #define SCHED_PROFILING 2 #define SLEEP_PROFILING 3 +#define KVM_PROFILING 4 struct proc_dir_entry; struct pt_regs; diff --git a/kernel/profile.c b/kernel/profile.c index 11550b2290b69a20ed624e5966438a70fbd617d0..a6574a18514e9686baf9d6b77f7a6cd3f6c57ca1 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -40,7 +40,10 @@ int (*timer_hook)(struct pt_regs *) __read_mostly; static atomic_t *prof_buffer; static unsigned long prof_len, prof_shift; + int prof_on __read_mostly; +EXPORT_SYMBOL_GPL(prof_on); + static cpumask_t prof_cpu_mask = CPU_MASK_ALL; #ifdef CONFIG_SMP static DEFINE_PER_CPU(struct profile_hit *[2], cpu_profile_hits); @@ -52,6 +55,7 @@ static int __init profile_setup(char * str) { static char __initdata schedstr[] = "schedule"; static char __initdata sleepstr[] = "sleep"; + static char __initdata kvmstr[] = "kvm"; int par; if (!strncmp(str, sleepstr, strlen(sleepstr))) { @@ -72,6 +76,15 @@ static int __init profile_setup(char * str) printk(KERN_INFO "kernel schedule profiling enabled (shift: %ld)\n", prof_shift); + } else if (!strncmp(str, kvmstr, strlen(kvmstr))) { + prof_on = KVM_PROFILING; + if (str[strlen(kvmstr)] == ',') + str += strlen(kvmstr) + 1; + if (get_option(&str, &par)) + prof_shift = par; + printk(KERN_INFO + "kernel KVM profiling enabled (shift: %ld)\n", + prof_shift); } else if (get_option(&str, &par)) { prof_shift = par; prof_on = CPU_PROFILING; @@ -318,6 +331,7 @@ void profile_hits(int type, void *__pc, unsigned int nr_hits) local_irq_restore(flags); put_cpu(); } +EXPORT_SYMBOL_GPL(profile_hits); static int __devinit profile_cpu_callback(struct notifier_block *info, unsigned long action, void *__cpu)