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KVM: convert custom marker based tracing to event traces

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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>
This commit is contained in:
Marcelo Tosatti
2009-06-17 09:22:14 -03:00
committed by Avi Kivity
parent 219b65dcf6
commit 229456fc34
10 changed files with 463 additions and 86 deletions
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84
arch/x86/kvm/svm.c
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@@ -25,10 +25,12 @@
#include <linux/vmalloc.h>
#include <linux/highmem.h>
#include <linux/sched.h>
#include <linux/ftrace_event.h>
#include <asm/desc.h>
#include <asm/virtext.h>
#include "trace.h"
#define __ex(x) __kvm_handle_fault_on_reboot(x)
@@ -1096,7 +1098,6 @@ static unsigned long svm_get_dr(struct kvm_vcpu *vcpu, int dr)
val = 0;
}
KVMTRACE_2D(DR_READ, vcpu, (u32)dr, (u32)val, handler);
return val;
}
@@ -1105,8 +1106,6 @@ static void svm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long value,
{
struct vcpu_svm *svm = to_svm(vcpu);
KVMTRACE_2D(DR_WRITE, vcpu, (u32)dr, (u32)value, handler);
*exception = 0;
switch (dr) {
@@ -1154,14 +1153,7 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
fault_address = svm->vmcb->control.exit_info_2;
error_code = svm->vmcb->control.exit_info_1;
if (!npt_enabled)
KVMTRACE_3D(PAGE_FAULT, &svm->vcpu, error_code,
(u32)fault_address, (u32)(fault_address >> 32),
handler);
else
KVMTRACE_3D(TDP_FAULT, &svm->vcpu, error_code,
(u32)fault_address, (u32)(fault_address >> 32),
handler);
trace_kvm_page_fault(fault_address, error_code);
/*
* FIXME: Tis shouldn't be necessary here, but there is a flush
* missing in the MMU code. Until we find this bug, flush the
@@ -1288,14 +1280,12 @@ static int io_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
static int nmi_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
{
KVMTRACE_0D(NMI, &svm->vcpu, handler);
return 1;
}
static int intr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
{
++svm->vcpu.stat.irq_exits;
KVMTRACE_0D(INTR, &svm->vcpu, handler);
return 1;
}
@@ -2077,8 +2067,7 @@ static int rdmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
if (svm_get_msr(&svm->vcpu, ecx, &data))
kvm_inject_gp(&svm->vcpu, 0);
else {
KVMTRACE_3D(MSR_READ, &svm->vcpu, ecx, (u32)data,
(u32)(data >> 32), handler);
trace_kvm_msr_read(ecx, data);
svm->vcpu.arch.regs[VCPU_REGS_RAX] = data & 0xffffffff;
svm->vcpu.arch.regs[VCPU_REGS_RDX] = data >> 32;
@@ -2163,8 +2152,7 @@ static int wrmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
u64 data = (svm->vcpu.arch.regs[VCPU_REGS_RAX] & -1u)
| ((u64)(svm->vcpu.arch.regs[VCPU_REGS_RDX] & -1u) << 32);
KVMTRACE_3D(MSR_WRITE, &svm->vcpu, ecx, (u32)data, (u32)(data >> 32),
handler);
trace_kvm_msr_write(ecx, data);
svm->next_rip = kvm_rip_read(&svm->vcpu) + 2;
if (svm_set_msr(&svm->vcpu, ecx, data))
@@ -2185,8 +2173,6 @@ static int msr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
static int interrupt_window_interception(struct vcpu_svm *svm,
struct kvm_run *kvm_run)
{
KVMTRACE_0D(PEND_INTR, &svm->vcpu, handler);
svm_clear_vintr(svm);
svm->vmcb->control.int_ctl &= ~V_IRQ_MASK;
/*
@@ -2265,8 +2251,7 @@ static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);
u32 exit_code = svm->vmcb->control.exit_code;
KVMTRACE_3D(VMEXIT, vcpu, exit_code, (u32)svm->vmcb->save.rip,
(u32)((u64)svm->vmcb->save.rip >> 32), entryexit);
trace_kvm_exit(exit_code, svm->vmcb->save.rip);
if (is_nested(svm)) {
nsvm_printk("nested handle_exit: 0x%x | 0x%lx | 0x%lx | 0x%lx\n",
@@ -2354,7 +2339,7 @@ static inline void svm_inject_irq(struct vcpu_svm *svm, int irq)
{
struct vmcb_control_area *control;
KVMTRACE_1D(INJ_VIRQ, &svm->vcpu, (u32)irq, handler);
trace_kvm_inj_virq(irq);
++svm->vcpu.stat.irq_injections;
control = &svm->vmcb->control;
@@ -2717,6 +2702,59 @@ static u64 svm_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
return 0;
}
static const struct trace_print_flags svm_exit_reasons_str[] = {
{ SVM_EXIT_READ_CR0, "read_cr0" },
{ SVM_EXIT_READ_CR3, "read_cr3" },
{ SVM_EXIT_READ_CR4, "read_cr4" },
{ SVM_EXIT_READ_CR8, "read_cr8" },
{ SVM_EXIT_WRITE_CR0, "write_cr0" },
{ SVM_EXIT_WRITE_CR3, "write_cr3" },
{ SVM_EXIT_WRITE_CR4, "write_cr4" },
{ SVM_EXIT_WRITE_CR8, "write_cr8" },
{ SVM_EXIT_READ_DR0, "read_dr0" },
{ SVM_EXIT_READ_DR1, "read_dr1" },
{ SVM_EXIT_READ_DR2, "read_dr2" },
{ SVM_EXIT_READ_DR3, "read_dr3" },
{ SVM_EXIT_WRITE_DR0, "write_dr0" },
{ SVM_EXIT_WRITE_DR1, "write_dr1" },
{ SVM_EXIT_WRITE_DR2, "write_dr2" },
{ SVM_EXIT_WRITE_DR3, "write_dr3" },
{ SVM_EXIT_WRITE_DR5, "write_dr5" },
{ SVM_EXIT_WRITE_DR7, "write_dr7" },
{ SVM_EXIT_EXCP_BASE + DB_VECTOR, "DB excp" },
{ SVM_EXIT_EXCP_BASE + BP_VECTOR, "BP excp" },
{ SVM_EXIT_EXCP_BASE + UD_VECTOR, "UD excp" },
{ SVM_EXIT_EXCP_BASE + PF_VECTOR, "PF excp" },
{ SVM_EXIT_EXCP_BASE + NM_VECTOR, "NM excp" },
{ SVM_EXIT_EXCP_BASE + MC_VECTOR, "MC excp" },
{ SVM_EXIT_INTR, "interrupt" },
{ SVM_EXIT_NMI, "nmi" },
{ SVM_EXIT_SMI, "smi" },
{ SVM_EXIT_INIT, "init" },
{ SVM_EXIT_VINTR, "vintr" },
{ SVM_EXIT_CPUID, "cpuid" },
{ SVM_EXIT_INVD, "invd" },
{ SVM_EXIT_HLT, "hlt" },
{ SVM_EXIT_INVLPG, "invlpg" },
{ SVM_EXIT_INVLPGA, "invlpga" },
{ SVM_EXIT_IOIO, "io" },
{ SVM_EXIT_MSR, "msr" },
{ SVM_EXIT_TASK_SWITCH, "task_switch" },
{ SVM_EXIT_SHUTDOWN, "shutdown" },
{ SVM_EXIT_VMRUN, "vmrun" },
{ SVM_EXIT_VMMCALL, "hypercall" },
{ SVM_EXIT_VMLOAD, "vmload" },
{ SVM_EXIT_VMSAVE, "vmsave" },
{ SVM_EXIT_STGI, "stgi" },
{ SVM_EXIT_CLGI, "clgi" },
{ SVM_EXIT_SKINIT, "skinit" },
{ SVM_EXIT_WBINVD, "wbinvd" },
{ SVM_EXIT_MONITOR, "monitor" },
{ SVM_EXIT_MWAIT, "mwait" },
{ SVM_EXIT_NPF, "npf" },
{ -1, NULL }
};
static struct kvm_x86_ops svm_x86_ops = {
.cpu_has_kvm_support = has_svm,
.disabled_by_bios = is_disabled,
@@ -2778,6 +2816,8 @@ static struct kvm_x86_ops svm_x86_ops = {
.set_tss_addr = svm_set_tss_addr,
.get_tdp_level = get_npt_level,
.get_mt_mask = svm_get_mt_mask,
.exit_reasons_str = svm_exit_reasons_str,
};
static int __init svm_init(void)