Add support for kvm x86 specific tracepoints
authorMohamad Gebai <mohamad.gebai@gmail.com>
Mon, 8 Jul 2013 16:52:22 +0000 (12:52 -0400)
committerMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Mon, 8 Jul 2013 16:52:22 +0000 (12:52 -0400)
Two new probes for kvm-x86 and kvm-x86-mmu.

Signed-off-by: Mohamad Gebai <mohamad.gebai@polymtl.ca>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h [new file with mode: 0644]
instrumentation/events/lttng-module/arch/x86/kvm/trace.h [new file with mode: 0644]
probes/Makefile
probes/lttng-probe-kvm-x86-mmu.c [new file with mode: 0644]
probes/lttng-probe-kvm-x86.c [new file with mode: 0644]

diff --git a/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h b/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h
new file mode 100644 (file)
index 0000000..56ddbab
--- /dev/null
@@ -0,0 +1,285 @@
+#if !defined(_TRACE_KVMMMU_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_KVMMMU_H
+
+#include <linux/tracepoint.h>
+#include <linux/ftrace_event.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM kvmmmu
+
+#define KVM_MMU_PAGE_FIELDS \
+       __field(__u64, gfn) \
+       __field(__u32, role) \
+       __field(__u32, root_count) \
+       __field(bool, unsync)
+
+#define KVM_MMU_PAGE_ASSIGN(sp)                             \
+       tp_assign(gfn, sp->gfn)                      \
+       tp_assign(role, sp->role.word)               \
+       tp_assign(root_count, sp->root_count)        \
+       tp_assign(unsync, sp->unsync)
+
+#define KVM_MMU_PAGE_PRINTK() ({                                       \
+       const char *ret = p->buffer + p->len;                           \
+       static const char *access_str[] = {                             \
+               "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux"  \
+       };                                                              \
+       union kvm_mmu_page_role role;                                   \
+                                                                       \
+       role.word = __entry->role;                                      \
+                                                                       \
+       trace_seq_printf(p, "sp gfn %llx %u%s q%u%s %s%s"               \
+                        " %snxe root %u %s%c",                         \
+                        __entry->gfn, role.level,                      \
+                        role.cr4_pae ? " pae" : "",                    \
+                        role.quadrant,                                 \
+                        role.direct ? " direct" : "",                  \
+                        access_str[role.access],                       \
+                        role.invalid ? " invalid" : "",                \
+                        role.nxe ? "" : "!",                           \
+                        __entry->root_count,                           \
+                        __entry->unsync ? "unsync" : "sync", 0);       \
+       ret;                                                            \
+               })
+
+#define kvm_mmu_trace_pferr_flags       \
+       { PFERR_PRESENT_MASK, "P" },    \
+       { PFERR_WRITE_MASK, "W" },      \
+       { PFERR_USER_MASK, "U" },       \
+       { PFERR_RSVD_MASK, "RSVD" },    \
+       { PFERR_FETCH_MASK, "F" }
+
+/*
+ * A pagetable walk has started
+ */
+TRACE_EVENT(
+       kvm_mmu_pagetable_walk,
+       TP_PROTO(u64 addr, u32 pferr),
+       TP_ARGS(addr, pferr),
+
+       TP_STRUCT__entry(
+               __field(__u64, addr)
+               __field(__u32, pferr)
+       ),
+
+       TP_fast_assign(
+               tp_assign(addr, addr)
+               tp_assign(pferr, pferr)
+       ),
+
+       TP_printk("addr %llx pferr %x %s", __entry->addr, __entry->pferr,
+                 __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
+)
+
+
+/* We just walked a paging element */
+TRACE_EVENT(
+       kvm_mmu_paging_element,
+       TP_PROTO(u64 pte, int level),
+       TP_ARGS(pte, level),
+
+       TP_STRUCT__entry(
+               __field(__u64, pte)
+               __field(__u32, level)
+               ),
+
+       TP_fast_assign(
+               tp_assign(pte, pte)
+               tp_assign(level, level)
+               ),
+
+       TP_printk("pte %llx level %u", __entry->pte, __entry->level)
+)
+
+DECLARE_EVENT_CLASS(kvm_mmu_set_bit_class,
+
+       TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
+
+       TP_ARGS(table_gfn, index, size),
+
+       TP_STRUCT__entry(
+               __field(__u64, gpa)
+       ),
+
+       TP_fast_assign(
+               tp_assign(gpa, ((u64)table_gfn << PAGE_SHIFT)
+                               + index * size)
+               ),
+
+       TP_printk("gpa %llx", __entry->gpa)
+)
+
+/* We set a pte accessed bit */
+DEFINE_EVENT(kvm_mmu_set_bit_class, kvm_mmu_set_accessed_bit,
+
+       TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
+
+       TP_ARGS(table_gfn, index, size)
+)
+
+/* We set a pte dirty bit */
+DEFINE_EVENT(kvm_mmu_set_bit_class, kvm_mmu_set_dirty_bit,
+
+       TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
+
+       TP_ARGS(table_gfn, index, size)
+)
+
+TRACE_EVENT(
+       kvm_mmu_walker_error,
+       TP_PROTO(u32 pferr),
+       TP_ARGS(pferr),
+
+       TP_STRUCT__entry(
+               __field(__u32, pferr)
+               ),
+
+       TP_fast_assign(
+               tp_assign(pferr, pferr)
+               ),
+
+       TP_printk("pferr %x %s", __entry->pferr,
+                 __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
+)
+
+TRACE_EVENT(
+       kvm_mmu_get_page,
+       TP_PROTO(struct kvm_mmu_page *sp, bool created),
+       TP_ARGS(sp, created),
+
+       TP_STRUCT__entry(
+               KVM_MMU_PAGE_FIELDS
+               __field(bool, created)
+               ),
+
+       TP_fast_assign(
+               KVM_MMU_PAGE_ASSIGN(sp)
+               tp_assign(created, created)
+               ),
+
+       TP_printk("%s %s", KVM_MMU_PAGE_PRINTK(),
+                 __entry->created ? "new" : "existing")
+)
+
+DECLARE_EVENT_CLASS(kvm_mmu_page_class,
+
+       TP_PROTO(struct kvm_mmu_page *sp),
+       TP_ARGS(sp),
+
+       TP_STRUCT__entry(
+               KVM_MMU_PAGE_FIELDS
+       ),
+
+       TP_fast_assign(
+               KVM_MMU_PAGE_ASSIGN(sp)
+       ),
+
+       TP_printk("%s", KVM_MMU_PAGE_PRINTK())
+)
+
+DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_sync_page,
+       TP_PROTO(struct kvm_mmu_page *sp),
+
+       TP_ARGS(sp)
+)
+
+DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_unsync_page,
+       TP_PROTO(struct kvm_mmu_page *sp),
+
+       TP_ARGS(sp)
+)
+
+DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_prepare_zap_page,
+       TP_PROTO(struct kvm_mmu_page *sp),
+
+       TP_ARGS(sp)
+)
+
+TRACE_EVENT(
+       mark_mmio_spte,
+       TP_PROTO(u64 *sptep, gfn_t gfn, unsigned access),
+       TP_ARGS(sptep, gfn, access),
+
+       TP_STRUCT__entry(
+               __field(void *, sptep)
+               __field(gfn_t, gfn)
+               __field(unsigned, access)
+       ),
+
+       TP_fast_assign(
+               tp_assign(sptep, sptep)
+               tp_assign(gfn, gfn)
+               tp_assign(access, access)
+       ),
+
+       TP_printk("sptep:%p gfn %llx access %x", __entry->sptep, __entry->gfn,
+                 __entry->access)
+)
+
+TRACE_EVENT(
+       handle_mmio_page_fault,
+       TP_PROTO(u64 addr, gfn_t gfn, unsigned access),
+       TP_ARGS(addr, gfn, access),
+
+       TP_STRUCT__entry(
+               __field(u64, addr)
+               __field(gfn_t, gfn)
+               __field(unsigned, access)
+       ),
+
+       TP_fast_assign(
+               tp_assign(addr, addr)
+               tp_assign(gfn, gfn)
+               tp_assign(access, access)
+       ),
+
+       TP_printk("addr:%llx gfn %llx access %x", __entry->addr, __entry->gfn,
+                 __entry->access)
+)
+
+#define __spte_satisfied(__spte)                               \
+       (__entry->retry && is_writable_pte(__entry->__spte))
+
+TRACE_EVENT(
+       fast_page_fault,
+       TP_PROTO(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
+                u64 *sptep, u64 old_spte, bool retry),
+       TP_ARGS(vcpu, gva, error_code, sptep, old_spte, retry),
+
+       TP_STRUCT__entry(
+               __field(int, vcpu_id)
+               __field(gva_t, gva)
+               __field(u32, error_code)
+               __field(u64 *, sptep)
+               __field(u64, old_spte)
+               __field(u64, new_spte)
+               __field(bool, retry)
+       ),
+
+       TP_fast_assign(
+               tp_assign(vcpu_id, vcpu->vcpu_id)
+               tp_assign(gva, gva)
+               tp_assign(error_code, error_code)
+               tp_assign(sptep, sptep)
+               tp_assign(old_spte, old_spte)
+               tp_assign(new_spte, *sptep)
+               tp_assign(retry, retry)
+       ),
+
+       TP_printk("vcpu %d gva %lx error_code %s sptep %p old %#llx"
+                 " new %llx spurious %d fixed %d", __entry->vcpu_id,
+                 __entry->gva, __print_flags(__entry->error_code, "|",
+                 kvm_mmu_trace_pferr_flags), __entry->sptep,
+                 __entry->old_spte, __entry->new_spte,
+                 __spte_satisfied(old_spte), __spte_satisfied(new_spte)
+       )
+)
+#endif /* _TRACE_KVMMMU_H */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH ../instrumentation/events/lttng-module/arch/x86/kvm
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE mmutrace
+
+/* This part must be outside protection */
+#include "../../../../../../probes/define_trace.h"
diff --git a/instrumentation/events/lttng-module/arch/x86/kvm/trace.h b/instrumentation/events/lttng-module/arch/x86/kvm/trace.h
new file mode 100644 (file)
index 0000000..8e71a7f
--- /dev/null
@@ -0,0 +1,833 @@
+#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_KVM_H
+
+#include <linux/tracepoint.h>
+#include <asm/vmx.h>
+#include <asm/svm.h>
+#include <asm/clocksource.h>
+#include <linux/version.h>
+#include <../arch/x86/kvm/lapic.h>
+#include <../arch/x86/kvm/kvm_cache_regs.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM kvm
+
+/*
+ * Tracepoint for guest mode entry.
+ */
+TRACE_EVENT(kvm_entry,
+       TP_PROTO(unsigned int vcpu_id),
+       TP_ARGS(vcpu_id),
+
+       TP_STRUCT__entry(
+               __field(        unsigned int,   vcpu_id         )
+       ),
+
+       TP_fast_assign(
+               tp_assign(vcpu_id, vcpu_id)
+       ),
+
+       TP_printk("vcpu %u", __entry->vcpu_id)
+)
+
+/*
+ * Tracepoint for hypercall.
+ */
+TRACE_EVENT(kvm_hypercall,
+       TP_PROTO(unsigned long nr, unsigned long a0, unsigned long a1,
+                unsigned long a2, unsigned long a3),
+       TP_ARGS(nr, a0, a1, a2, a3),
+
+       TP_STRUCT__entry(
+               __field(        unsigned long,  nr              )
+               __field(        unsigned long,  a0              )
+               __field(        unsigned long,  a1              )
+               __field(        unsigned long,  a2              )
+               __field(        unsigned long,  a3              )
+       ),
+
+       TP_fast_assign(
+               tp_assign(nr, nr)
+               tp_assign(a0, a0)
+               tp_assign(a1, a1)
+               tp_assign(a2, a2)
+               tp_assign(a3, a3)
+       ),
+
+       TP_printk("nr 0x%lx a0 0x%lx a1 0x%lx a2 0x%lx a3 0x%lx",
+                __entry->nr, __entry->a0, __entry->a1,  __entry->a2,
+                __entry->a3)
+)
+
+/*
+ * Tracepoint for hypercall.
+ */
+TRACE_EVENT(kvm_hv_hypercall,
+       TP_PROTO(__u16 code, bool fast, __u16 rep_cnt, __u16 rep_idx,
+                __u64 ingpa, __u64 outgpa),
+       TP_ARGS(code, fast, rep_cnt, rep_idx, ingpa, outgpa),
+
+       TP_STRUCT__entry(
+               __field(        __u16,          rep_cnt         )
+               __field(        __u16,          rep_idx         )
+               __field(        __u64,          ingpa           )
+               __field(        __u64,          outgpa          )
+               __field(        __u16,          code            )
+               __field(        bool,           fast            )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rep_cnt, rep_cnt)
+               tp_assign(rep_idx, rep_idx)
+               tp_assign(ingpa, ingpa)
+               tp_assign(outgpa, outgpa)
+               tp_assign(code, code)
+               tp_assign(fast, fast)
+       ),
+
+       TP_printk("code 0x%x %s cnt 0x%x idx 0x%x in 0x%llx out 0x%llx",
+                 __entry->code, __entry->fast ? "fast" : "slow",
+                 __entry->rep_cnt, __entry->rep_idx,  __entry->ingpa,
+                 __entry->outgpa)
+)
+
+/*
+ * Tracepoint for PIO.
+ */
+TRACE_EVENT(kvm_pio,
+       TP_PROTO(unsigned int rw, unsigned int port, unsigned int size,
+                unsigned int count),
+       TP_ARGS(rw, port, size, count),
+
+       TP_STRUCT__entry(
+               __field(        unsigned int,   rw              )
+               __field(        unsigned int,   port            )
+               __field(        unsigned int,   size            )
+               __field(        unsigned int,   count           )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rw, rw)
+               tp_assign(port, port)
+               tp_assign(size, size)
+               tp_assign(count, count)
+       ),
+
+       TP_printk("pio_%s at 0x%x size %d count %d",
+                 __entry->rw ? "write" : "read",
+                 __entry->port, __entry->size, __entry->count)
+)
+
+/*
+ * Tracepoint for cpuid.
+ */
+TRACE_EVENT(kvm_cpuid,
+       TP_PROTO(unsigned int function, unsigned long rax, unsigned long rbx,
+                unsigned long rcx, unsigned long rdx),
+       TP_ARGS(function, rax, rbx, rcx, rdx),
+
+       TP_STRUCT__entry(
+               __field(        unsigned int,   function        )
+               __field(        unsigned long,  rax             )
+               __field(        unsigned long,  rbx             )
+               __field(        unsigned long,  rcx             )
+               __field(        unsigned long,  rdx             )
+       ),
+
+       TP_fast_assign(
+               tp_assign(function, function)
+               tp_assign(rax, rax)
+               tp_assign(rbx, rbx)
+               tp_assign(rcx, rcx)
+               tp_assign(rdx, rdx)
+       ),
+
+       TP_printk("func %x rax %lx rbx %lx rcx %lx rdx %lx",
+                 __entry->function, __entry->rax,
+                 __entry->rbx, __entry->rcx, __entry->rdx)
+)
+
+#define AREG(x) { APIC_##x, "APIC_" #x }
+
+#define kvm_trace_symbol_apic                                              \
+       AREG(ID), AREG(LVR), AREG(TASKPRI), AREG(ARBPRI), AREG(PROCPRI),    \
+       AREG(EOI), AREG(RRR), AREG(LDR), AREG(DFR), AREG(SPIV), AREG(ISR),  \
+       AREG(TMR), AREG(IRR), AREG(ESR), AREG(ICR), AREG(ICR2), AREG(LVTT), \
+       AREG(LVTTHMR), AREG(LVTPC), AREG(LVT0), AREG(LVT1), AREG(LVTERR),   \
+       AREG(TMICT), AREG(TMCCT), AREG(TDCR), AREG(SELF_IPI), AREG(EFEAT),  \
+       AREG(ECTRL)
+/*
+ * Tracepoint for apic access.
+ */
+TRACE_EVENT(kvm_apic,
+       TP_PROTO(unsigned int rw, unsigned int reg, unsigned int val),
+       TP_ARGS(rw, reg, val),
+
+       TP_STRUCT__entry(
+               __field(        unsigned int,   rw              )
+               __field(        unsigned int,   reg             )
+               __field(        unsigned int,   val             )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rw, rw)
+               tp_assign(reg, reg)
+               tp_assign(val, val)
+       ),
+
+       TP_printk("apic_%s %s = 0x%x",
+                 __entry->rw ? "write" : "read",
+                 __print_symbolic(__entry->reg, kvm_trace_symbol_apic),
+                 __entry->val)
+)
+
+#define trace_kvm_apic_read(reg, val)          trace_kvm_apic(0, reg, val)
+#define trace_kvm_apic_write(reg, val)         trace_kvm_apic(1, reg, val)
+
+#define KVM_ISA_VMX   1
+#define KVM_ISA_SVM   2
+
+/*
+ * Tracepoint for kvm guest exit:
+ */
+TRACE_EVENT(kvm_exit,
+       TP_PROTO(unsigned int exit_reason, struct kvm_vcpu *vcpu, u32 isa, u64 info1, u64 info2),
+       TP_ARGS(exit_reason, vcpu, isa, info1, info2),
+
+       TP_STRUCT__entry(
+               __field(        unsigned int,   exit_reason     )
+               __field(        unsigned long,  guest_rip       )
+               __field(        u32,            isa             )
+               __field(        u64,            info1           )
+               __field(        u64,            info2           )
+       ),
+
+       TP_fast_assign(
+               tp_assign(exit_reason, exit_reason)
+               tp_assign(guest_rip, kvm_rip_read(vcpu))
+               tp_assign(isa, isa)
+    kvm_x86_ops->get_exit_info(vcpu, &info1,
+              &info2);
+    tp_assign(info1, info1)
+    tp_assign(info2, info2)
+       ),
+
+       TP_printk("reason %s rip  info %llx %llx",
+                (__entry->isa == KVM_ISA_VMX) ?
+                __print_symbolic(__entry->exit_reason, VMX_EXIT_REASONS) :
+                __print_symbolic(__entry->exit_reason, SVM_EXIT_REASONS),
+               /* __entry->guest_rip,*/ __entry->info1, __entry->info2)
+)
+
+/*
+ * Tracepoint for kvm interrupt injection:
+ */
+TRACE_EVENT(kvm_inj_virq,
+       TP_PROTO(unsigned int irq),
+       TP_ARGS(irq),
+
+       TP_STRUCT__entry(
+               __field(        unsigned int,   irq             )
+       ),
+
+       TP_fast_assign(
+               tp_assign(irq, irq)
+       ),
+
+       TP_printk("irq %u", __entry->irq)
+)
+
+#define EXS(x) { x##_VECTOR, "#" #x }
+
+#define kvm_trace_sym_exc                                              \
+       EXS(DE), EXS(DB), EXS(BP), EXS(OF), EXS(BR), EXS(UD), EXS(NM),  \
+       EXS(DF), EXS(TS), EXS(NP), EXS(SS), EXS(GP), EXS(PF),           \
+       EXS(MF), EXS(MC)
+
+/*
+ * Tracepoint for kvm interrupt injection:
+ */
+TRACE_EVENT(kvm_inj_exception,
+       TP_PROTO(unsigned exception, bool has_error, unsigned error_code),
+       TP_ARGS(exception, has_error, error_code),
+
+       TP_STRUCT__entry(
+               __field(        u8,     exception       )
+               __field(        u8,     has_error       )
+               __field(        u32,    error_code      )
+       ),
+
+       TP_fast_assign(
+               tp_assign(exception, exception)
+               tp_assign(has_error, has_error)
+               tp_assign(error_code, error_code)
+       ),
+
+       TP_printk("%s (0x%x)",
+                 __print_symbolic(__entry->exception, kvm_trace_sym_exc),
+                 /* FIXME: don't print error_code if not present */
+                 __entry->has_error ? __entry->error_code : 0)
+)
+
+/*
+ * Tracepoint for page fault.
+ */
+TRACE_EVENT(kvm_page_fault,
+       TP_PROTO(unsigned long fault_address, unsigned int error_code),
+       TP_ARGS(fault_address, error_code),
+
+       TP_STRUCT__entry(
+               __field(        unsigned long,  fault_address   )
+               __field(        unsigned int,   error_code      )
+       ),
+
+       TP_fast_assign(
+               tp_assign(fault_address, fault_address)
+               tp_assign(error_code, error_code)
+       ),
+
+       TP_printk("address %lx error_code %x",
+                 __entry->fault_address, __entry->error_code)
+)
+
+/*
+ * Tracepoint for guest MSR access.
+ */
+TRACE_EVENT(kvm_msr,
+       TP_PROTO(unsigned write, u32 ecx, u64 data, bool exception),
+       TP_ARGS(write, ecx, data, exception),
+
+       TP_STRUCT__entry(
+               __field(        unsigned,       write           )
+               __field(        u32,            ecx             )
+               __field(        u64,            data            )
+               __field(        u8,             exception       )
+       ),
+
+       TP_fast_assign(
+               tp_assign(write, write)
+               tp_assign(ecx, ecx)
+               tp_assign(data, data)
+               tp_assign(exception, exception)
+       ),
+
+       TP_printk("msr_%s %x = 0x%llx%s",
+                 __entry->write ? "write" : "read",
+                 __entry->ecx, __entry->data,
+                 __entry->exception ? " (#GP)" : "")
+)
+
+#define trace_kvm_msr_read(ecx, data)      trace_kvm_msr(0, ecx, data, false)
+#define trace_kvm_msr_write(ecx, data)     trace_kvm_msr(1, ecx, data, false)
+#define trace_kvm_msr_read_ex(ecx)         trace_kvm_msr(0, ecx, 0, true)
+#define trace_kvm_msr_write_ex(ecx, data)  trace_kvm_msr(1, ecx, data, true)
+
+/*
+ * Tracepoint for guest CR access.
+ */
+TRACE_EVENT(kvm_cr,
+       TP_PROTO(unsigned int rw, unsigned int cr, unsigned long val),
+       TP_ARGS(rw, cr, val),
+
+       TP_STRUCT__entry(
+               __field(        unsigned int,   rw              )
+               __field(        unsigned int,   cr              )
+               __field(        unsigned long,  val             )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rw, rw)
+               tp_assign(cr, cr)
+               tp_assign(val, val)
+       ),
+
+       TP_printk("cr_%s %x = 0x%lx",
+                 __entry->rw ? "write" : "read",
+                 __entry->cr, __entry->val)
+)
+
+#define trace_kvm_cr_read(cr, val)             trace_kvm_cr(0, cr, val)
+#define trace_kvm_cr_write(cr, val)            trace_kvm_cr(1, cr, val)
+
+TRACE_EVENT(kvm_pic_set_irq,
+           TP_PROTO(__u8 chip, __u8 pin, __u8 elcr, __u8 imr, bool coalesced),
+           TP_ARGS(chip, pin, elcr, imr, coalesced),
+
+       TP_STRUCT__entry(
+               __field(        __u8,           chip            )
+               __field(        __u8,           pin             )
+               __field(        __u8,           elcr            )
+               __field(        __u8,           imr             )
+               __field(        bool,           coalesced       )
+       ),
+
+       TP_fast_assign(
+               tp_assign(chip, chip)
+               tp_assign(pin, pin)
+               tp_assign(elcr, elcr)
+               tp_assign(imr, imr)
+               tp_assign(coalesced, coalesced)
+       ),
+
+       TP_printk("chip %u pin %u (%s%s)%s",
+                 __entry->chip, __entry->pin,
+                 (__entry->elcr & (1 << __entry->pin)) ? "level":"edge",
+                 (__entry->imr & (1 << __entry->pin)) ? "|masked":"",
+                 __entry->coalesced ? " (coalesced)" : "")
+)
+
+#define kvm_apic_dst_shorthand         \
+       {0x0, "dst"},                   \
+       {0x1, "self"},                  \
+       {0x2, "all"},                   \
+       {0x3, "all-but-self"}
+
+TRACE_EVENT(kvm_apic_ipi,
+           TP_PROTO(__u32 icr_low, __u32 dest_id),
+           TP_ARGS(icr_low, dest_id),
+
+       TP_STRUCT__entry(
+               __field(        __u32,          icr_low         )
+               __field(        __u32,          dest_id         )
+       ),
+
+       TP_fast_assign(
+               tp_assign(icr_low, icr_low)
+               tp_assign(dest_id, dest_id)
+       ),
+
+       TP_printk("dst %x vec %u (%s|%s|%s|%s|%s)",
+                 __entry->dest_id, (u8)__entry->icr_low,
+                 __print_symbolic((__entry->icr_low >> 8 & 0x7),
+                                  kvm_deliver_mode),
+                 (__entry->icr_low & (1<<11)) ? "logical" : "physical",
+                 (__entry->icr_low & (1<<14)) ? "assert" : "de-assert",
+                 (__entry->icr_low & (1<<15)) ? "level" : "edge",
+                 __print_symbolic((__entry->icr_low >> 18 & 0x3),
+                                  kvm_apic_dst_shorthand))
+)
+
+TRACE_EVENT(kvm_apic_accept_irq,
+           TP_PROTO(__u32 apicid, __u16 dm, __u8 tm, __u8 vec, bool coalesced),
+           TP_ARGS(apicid, dm, tm, vec, coalesced),
+
+       TP_STRUCT__entry(
+               __field(        __u32,          apicid          )
+               __field(        __u16,          dm              )
+               __field(        __u8,           tm              )
+               __field(        __u8,           vec             )
+               __field(        bool,           coalesced       )
+       ),
+
+       TP_fast_assign(
+               tp_assign(apicid, apicid)
+               tp_assign(dm, dm)
+               tp_assign(tm, tm)
+               tp_assign(vec, vec)
+               tp_assign(coalesced, coalesced)
+       ),
+
+       TP_printk("apicid %x vec %u (%s|%s)%s",
+                 __entry->apicid, __entry->vec,
+                 __print_symbolic((__entry->dm >> 8 & 0x7), kvm_deliver_mode),
+                 __entry->tm ? "level" : "edge",
+                 __entry->coalesced ? " (coalesced)" : "")
+)
+
+TRACE_EVENT(kvm_eoi,
+           TP_PROTO(struct kvm_lapic *apic, int vector),
+           TP_ARGS(apic, vector),
+
+       TP_STRUCT__entry(
+               __field(        __u32,          apicid          )
+               __field(        int,            vector          )
+       ),
+
+       TP_fast_assign(
+               tp_assign(apicid, apic->vcpu->vcpu_id)
+               tp_assign(vector, vector)
+       ),
+
+       TP_printk("apicid %x vector %d", __entry->apicid, __entry->vector)
+)
+
+TRACE_EVENT(kvm_pv_eoi,
+           TP_PROTO(struct kvm_lapic *apic, int vector),
+           TP_ARGS(apic, vector),
+
+       TP_STRUCT__entry(
+               __field(        __u32,          apicid          )
+               __field(        int,            vector          )
+       ),
+
+       TP_fast_assign(
+               tp_assign(apicid, apic->vcpu->vcpu_id)
+               tp_assign(vector, vector)
+       ),
+
+       TP_printk("apicid %x vector %d", __entry->apicid, __entry->vector)
+)
+
+/*
+ * Tracepoint for nested VMRUN
+ */
+TRACE_EVENT(kvm_nested_vmrun,
+           TP_PROTO(__u64 rip, __u64 vmcb, __u64 nested_rip, __u32 int_ctl,
+                    __u32 event_inj, bool npt),
+           TP_ARGS(rip, vmcb, nested_rip, int_ctl, event_inj, npt),
+
+       TP_STRUCT__entry(
+               __field(        __u64,          rip             )
+               __field(        __u64,          vmcb            )
+               __field(        __u64,          nested_rip      )
+               __field(        __u32,          int_ctl         )
+               __field(        __u32,          event_inj       )
+               __field(        bool,           npt             )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rip, rip)
+               tp_assign(vmcb, vmcb)
+               tp_assign(nested_rip, nested_rip)
+               tp_assign(int_ctl, int_ctl)
+               tp_assign(event_inj, event_inj)
+               tp_assign(npt, npt)
+       ),
+
+       TP_printk("rip: 0x%016llx vmcb: 0x%016llx nrip: 0x%016llx int_ctl: 0x%08x "
+                 "event_inj: 0x%08x npt: %s",
+               __entry->rip, __entry->vmcb, __entry->nested_rip,
+               __entry->int_ctl, __entry->event_inj,
+               __entry->npt ? "on" : "off")
+)
+
+TRACE_EVENT(kvm_nested_intercepts,
+           TP_PROTO(__u16 cr_read, __u16 cr_write, __u32 exceptions, __u64 intercept),
+           TP_ARGS(cr_read, cr_write, exceptions, intercept),
+
+       TP_STRUCT__entry(
+               __field(        __u16,          cr_read         )
+               __field(        __u16,          cr_write        )
+               __field(        __u32,          exceptions      )
+               __field(        __u64,          intercept       )
+       ),
+
+       TP_fast_assign(
+               tp_assign(cr_read, cr_read)
+               tp_assign(cr_write, cr_write)
+               tp_assign(exceptions, exceptions)
+               tp_assign(intercept, intercept)
+       ),
+
+       TP_printk("cr_read: %04x cr_write: %04x excp: %08x intercept: %016llx",
+               __entry->cr_read, __entry->cr_write, __entry->exceptions,
+               __entry->intercept)
+)
+/*
+ * Tracepoint for #VMEXIT while nested
+ */
+TRACE_EVENT(kvm_nested_vmexit,
+           TP_PROTO(__u64 rip, __u32 exit_code,
+                    __u64 exit_info1, __u64 exit_info2,
+                    __u32 exit_int_info, __u32 exit_int_info_err, __u32 isa),
+           TP_ARGS(rip, exit_code, exit_info1, exit_info2,
+                   exit_int_info, exit_int_info_err, isa),
+
+       TP_STRUCT__entry(
+               __field(        __u64,          rip                     )
+               __field(        __u32,          exit_code               )
+               __field(        __u64,          exit_info1              )
+               __field(        __u64,          exit_info2              )
+               __field(        __u32,          exit_int_info           )
+               __field(        __u32,          exit_int_info_err       )
+               __field(        __u32,          isa                     )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rip, rip)
+               tp_assign(exit_code, exit_code)
+               tp_assign(exit_info1, exit_info1)
+               tp_assign(exit_info2, exit_info2)
+               tp_assign(exit_int_info, exit_int_info)
+               tp_assign(exit_int_info_err, exit_int_info_err)
+               tp_assign(isa, isa)
+       ),
+       TP_printk("rip: 0x%016llx reason: %s ext_inf1: 0x%016llx "
+                 "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x",
+                 __entry->rip,
+                (__entry->isa == KVM_ISA_VMX) ?
+                __print_symbolic(__entry->exit_code, VMX_EXIT_REASONS) :
+                __print_symbolic(__entry->exit_code, SVM_EXIT_REASONS),
+                 __entry->exit_info1, __entry->exit_info2,
+                 __entry->exit_int_info, __entry->exit_int_info_err)
+)
+
+/*
+ * Tracepoint for #VMEXIT reinjected to the guest
+ */
+TRACE_EVENT(kvm_nested_vmexit_inject,
+           TP_PROTO(__u32 exit_code,
+                    __u64 exit_info1, __u64 exit_info2,
+                    __u32 exit_int_info, __u32 exit_int_info_err, __u32 isa),
+           TP_ARGS(exit_code, exit_info1, exit_info2,
+                   exit_int_info, exit_int_info_err, isa),
+
+       TP_STRUCT__entry(
+               __field(        __u32,          exit_code               )
+               __field(        __u64,          exit_info1              )
+               __field(        __u64,          exit_info2              )
+               __field(        __u32,          exit_int_info           )
+               __field(        __u32,          exit_int_info_err       )
+               __field(        __u32,          isa                     )
+       ),
+
+       TP_fast_assign(
+               tp_assign(exit_code, exit_code)
+               tp_assign(exit_info1, exit_info1)
+               tp_assign(exit_info2, exit_info2)
+               tp_assign(exit_int_info, exit_int_info)
+               tp_assign(exit_int_info_err, exit_int_info_err)
+               tp_assign(isa, isa)
+       ),
+
+       TP_printk("reason: %s ext_inf1: 0x%016llx "
+                 "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x",
+                (__entry->isa == KVM_ISA_VMX) ?
+                __print_symbolic(__entry->exit_code, VMX_EXIT_REASONS) :
+                __print_symbolic(__entry->exit_code, SVM_EXIT_REASONS),
+               __entry->exit_info1, __entry->exit_info2,
+               __entry->exit_int_info, __entry->exit_int_info_err)
+)
+
+/*
+ * Tracepoint for nested #vmexit because of interrupt pending
+ */
+TRACE_EVENT(kvm_nested_intr_vmexit,
+           TP_PROTO(__u64 rip),
+           TP_ARGS(rip),
+
+       TP_STRUCT__entry(
+               __field(        __u64,  rip     )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rip,  rip)
+       ),
+
+       TP_printk("rip: 0x%016llx", __entry->rip)
+)
+
+/*
+ * Tracepoint for nested #vmexit because of interrupt pending
+ */
+TRACE_EVENT(kvm_invlpga,
+           TP_PROTO(__u64 rip, int asid, u64 address),
+           TP_ARGS(rip, asid, address),
+
+       TP_STRUCT__entry(
+               __field(        __u64,  rip     )
+               __field(        int,    asid    )
+               __field(        __u64,  address )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rip,  rip)
+               tp_assign(asid, asid)
+               tp_assign(address,      address)
+       ),
+
+       TP_printk("rip: 0x%016llx asid: %d address: 0x%016llx",
+                 __entry->rip, __entry->asid, __entry->address)
+)
+
+/*
+ * Tracepoint for nested #vmexit because of interrupt pending
+ */
+TRACE_EVENT(kvm_skinit,
+           TP_PROTO(__u64 rip, __u32 slb),
+           TP_ARGS(rip, slb),
+
+       TP_STRUCT__entry(
+               __field(        __u64,  rip     )
+               __field(        __u32,  slb     )
+       ),
+
+       TP_fast_assign(
+               tp_assign(rip,  rip)
+               tp_assign(slb,  slb)
+       ),
+
+       TP_printk("rip: 0x%016llx slb: 0x%08x",
+                 __entry->rip, __entry->slb)
+)
+
+#define KVM_EMUL_INSN_F_CR0_PE (1 << 0)
+#define KVM_EMUL_INSN_F_EFL_VM (1 << 1)
+#define KVM_EMUL_INSN_F_CS_D   (1 << 2)
+#define KVM_EMUL_INSN_F_CS_L   (1 << 3)
+
+#define kvm_trace_symbol_emul_flags                      \
+       { 0,                        "real" },             \
+       { KVM_EMUL_INSN_F_CR0_PE                          \
+         | KVM_EMUL_INSN_F_EFL_VM, "vm16" },             \
+       { KVM_EMUL_INSN_F_CR0_PE,   "prot16" },           \
+       { KVM_EMUL_INSN_F_CR0_PE                          \
+         | KVM_EMUL_INSN_F_CS_D,   "prot32" },           \
+       { KVM_EMUL_INSN_F_CR0_PE                          \
+         | KVM_EMUL_INSN_F_CS_L,   "prot64" }
+
+#define kei_decode_mode(mode) ({                       \
+       u8 flags = 0xff;                                \
+       switch (mode) {                                 \
+       case X86EMUL_MODE_REAL:                         \
+               flags = 0;                              \
+               break;                                  \
+       case X86EMUL_MODE_VM86:                         \
+               flags = KVM_EMUL_INSN_F_EFL_VM;         \
+               break;                                  \
+       case X86EMUL_MODE_PROT16:                       \
+               flags = KVM_EMUL_INSN_F_CR0_PE;         \
+               break;                                  \
+       case X86EMUL_MODE_PROT32:                       \
+               flags = KVM_EMUL_INSN_F_CR0_PE          \
+                       | KVM_EMUL_INSN_F_CS_D;         \
+               break;                                  \
+       case X86EMUL_MODE_PROT64:                       \
+               flags = KVM_EMUL_INSN_F_CR0_PE          \
+                       | KVM_EMUL_INSN_F_CS_L;         \
+               break;                                  \
+       }                                               \
+       flags;                                          \
+       })
+
+TRACE_EVENT(kvm_emulate_insn,
+       TP_PROTO(struct kvm_vcpu *vcpu, __u8 failed),
+       TP_ARGS(vcpu, failed),
+
+       TP_STRUCT__entry(
+               __field(    __u64, rip                       )
+               __field(    __u32, csbase                    )
+               __field(    __u8,  len                       )
+               __array(    __u8,  insn,    15               )
+               __field(    __u8,  flags                     )
+               __field(    __u8,  failed                    )
+               ),
+
+       TP_fast_assign(
+               tp_assign(rip, vcpu->arch.emulate_ctxt.fetch.start)
+         tp_assign(csbase, kvm_x86_ops->get_segment_base(vcpu, VCPU_SREG_CS))
+               tp_assign(len, vcpu->arch.emulate_ctxt._eip
+                              - vcpu->arch.emulate_ctxt.fetch.start)
+               tp_memcpy(insn,
+                      vcpu->arch.emulate_ctxt.fetch.data,
+                      15)
+               tp_assign(flags, kei_decode_mode(vcpu->arch.emulate_ctxt.mode))
+               tp_assign(failed, failed)
+               ),
+
+       TP_printk("%x:%llx:%s (%s)%s",
+                 __entry->csbase, __entry->rip,
+                 __print_hex(__entry->insn, __entry->len),
+                 __print_symbolic(__entry->flags,
+                                  kvm_trace_symbol_emul_flags),
+                 __entry->failed ? " failed" : ""
+               )
+       )
+
+#define trace_kvm_emulate_insn_start(vcpu) trace_kvm_emulate_insn(vcpu, 0)
+#define trace_kvm_emulate_insn_failed(vcpu) trace_kvm_emulate_insn(vcpu, 1)
+
+TRACE_EVENT(
+       vcpu_match_mmio,
+       TP_PROTO(gva_t gva, gpa_t gpa, bool write, bool gpa_match),
+       TP_ARGS(gva, gpa, write, gpa_match),
+
+       TP_STRUCT__entry(
+               __field(gva_t, gva)
+               __field(gpa_t, gpa)
+               __field(bool, write)
+               __field(bool, gpa_match)
+               ),
+
+       TP_fast_assign(
+               tp_assign(gva, gva)
+               tp_assign(gpa, gpa)
+               tp_assign(write, write)
+               tp_assign(gpa_match, gpa_match)
+               ),
+
+       TP_printk("gva %#lx gpa %#llx %s %s", __entry->gva, __entry->gpa,
+                 __entry->write ? "Write" : "Read",
+                 __entry->gpa_match ? "GPA" : "GVA")
+)
+
+#ifdef CONFIG_X86_64
+
+#define host_clocks                                    \
+       {VCLOCK_NONE, "none"},                          \
+       {VCLOCK_TSC,  "tsc"},                           \
+       {VCLOCK_HPET, "hpet"}                           \
+
+TRACE_EVENT(kvm_update_master_clock,
+       TP_PROTO(bool use_master_clock, unsigned int host_clock, bool offset_matched),
+       TP_ARGS(use_master_clock, host_clock, offset_matched),
+
+       TP_STRUCT__entry(
+               __field(                bool,   use_master_clock        )
+               __field(        unsigned int,   host_clock              )
+               __field(                bool,   offset_matched          )
+       ),
+
+       TP_fast_assign(
+               tp_assign(use_master_clock, use_master_clock)
+               tp_assign(host_clock, host_clock)
+               tp_assign(offset_matched, offset_matched)
+       ),
+
+       TP_printk("masterclock %d hostclock %s offsetmatched %u",
+                 __entry->use_master_clock,
+                 __print_symbolic(__entry->host_clock, host_clocks),
+                 __entry->offset_matched)
+)
+
+TRACE_EVENT(kvm_track_tsc,
+       TP_PROTO(unsigned int vcpu_id, unsigned int nr_matched,
+                unsigned int online_vcpus, bool use_master_clock,
+                unsigned int host_clock),
+       TP_ARGS(vcpu_id, nr_matched, online_vcpus, use_master_clock,
+               host_clock),
+
+       TP_STRUCT__entry(
+               __field(        unsigned int,   vcpu_id                 )
+               __field(        unsigned int,   nr_vcpus_matched_tsc    )
+               __field(        unsigned int,   online_vcpus            )
+               __field(        bool,           use_master_clock        )
+               __field(        unsigned int,   host_clock              )
+       ),
+
+       TP_fast_assign(
+               tp_assign(vcpu_id, vcpu_id)
+               tp_assign(nr_vcpus_matched_tsc, nr_matched)
+               tp_assign(online_vcpus, online_vcpus)
+               tp_assign(use_master_clock, use_master_clock)
+               tp_assign(host_clock, host_clock)
+       ),
+
+       TP_printk("vcpu_id %u masterclock %u offsetmatched %u nr_online %u"
+                 " hostclock %s",
+                 __entry->vcpu_id, __entry->use_master_clock,
+                 __entry->nr_vcpus_matched_tsc, __entry->online_vcpus,
+                 __print_symbolic(__entry->host_clock, host_clocks))
+)
+
+#endif /* CONFIG_X86_64 */
+
+#endif /* _TRACE_KVM_H */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH ../instrumentation/events/lttng-module/arch/x86/kvm
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
+/* This part must be outside protection */
+#include "../../../../../../probes/define_trace.h"
index 225803c..13bf208 100644 (file)
@@ -18,7 +18,22 @@ obj-m += lttng-probe-power.o
 obj-m += lttng-probe-statedump.o
 
 ifneq ($(CONFIG_KVM),)
-obj-m += lttng-probe-kvm.o
+kvm = lttng-probe-kvm.o
+ifneq ($(CONFIG_X86),)
+kvm_dep = $(srctree)/virt/kvm/iodev.h
+kvm_x86 = lttng-probe-kvm-x86.o
+kvm_x86_mmu = lttng-probe-kvm-x86-mmu.o
+kvm_path = $(srctree)/virt/kvm
+ifeq ($(wildcard $(kvm_dep)),)
+$(warning Files $(kvm_dep) not found. Probe "kvm" x86-specific is disabled. Use full kernel source tree to enable it.)
+kvm_x86 =
+kvm_path =
+endif
+obj-m += $(kvm_x86)
+obj-m += $(kvm_x86_mmu)
+ccflags-y += -I$(kvm_path)
+endif
+obj-m += $(kvm)
 endif
 
 obj-m +=  $(shell \
diff --git a/probes/lttng-probe-kvm-x86-mmu.c b/probes/lttng-probe-kvm-x86-mmu.c
new file mode 100644 (file)
index 0000000..f0cbf88
--- /dev/null
@@ -0,0 +1,43 @@
+/*
+ * probes/lttng-probe-kvm.c
+ *
+ * LTTng kvm probes.
+ *
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/kvm_host.h>
+
+/*
+ * Create the tracepoint static inlines from the kernel to validate that our
+ * trace event macros match the kernel we run on.
+ */
+#include "../wrapper/tracepoint.h"
+
+/*
+ * Create LTTng tracepoint probes.
+ */
+#define LTTNG_PACKAGE_BUILD
+#define CREATE_TRACE_POINTS
+
+#define TRACE_INCLUDE_PATH ../instrumentation/events/lttng-module/arch/x86/kvm
+#include "../instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h"
+
+MODULE_LICENSE("GPL and additional rights");
+MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>");
+MODULE_DESCRIPTION("LTTng kvm mmu probes");
diff --git a/probes/lttng-probe-kvm-x86.c b/probes/lttng-probe-kvm-x86.c
new file mode 100644 (file)
index 0000000..abc93a8
--- /dev/null
@@ -0,0 +1,45 @@
+/*
+ * probes/lttng-probe-kvm.c
+ *
+ * LTTng kvm probes.
+ *
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/kvm_host.h>
+
+/*
+ * Create the tracepoint static inlines from the kernel to validate that our
+ * trace event macros match the kernel we run on.
+ */
+#include <trace/events/kvm.h>
+
+#include "../wrapper/tracepoint.h"
+
+/*
+ * Create LTTng tracepoint probes.
+ */
+#define LTTNG_PACKAGE_BUILD
+#define CREATE_TRACE_POINTS
+
+#define TRACE_INCLUDE_PATH ../instrumentation/events/lttng-module/arch/x86/kvm
+#include "../instrumentation/events/lttng-module/arch/x86/kvm/trace.h"
+
+MODULE_LICENSE("GPL and additional rights");
+MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>");
+MODULE_DESCRIPTION("LTTng kvm probes");
This page took 0.055879 seconds and 4 git commands to generate.