KVM: s390: Add architectural trace events
Add trace events for several s390 architecture specifics:
- SIE entry/exit
- common intercepts
- common instructions (sigp/diagnose)
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/s390/kvm/trace.h b/arch/s390/kvm/trace.h
new file mode 100644
index 0000000..2b29e62
--- /dev/null
+++ b/arch/s390/kvm/trace.h
@@ -0,0 +1,341 @@
+#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_KVM_H
+
+#include <linux/tracepoint.h>
+#include <asm/sigp.h>
+#include <asm/debug.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM kvm
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
+/*
+ * Helpers for vcpu-specific tracepoints containing the same information
+ * as s390dbf VCPU_EVENTs.
+ */
+#define VCPU_PROTO_COMMON struct kvm_vcpu *vcpu
+#define VCPU_ARGS_COMMON vcpu
+#define VCPU_FIELD_COMMON __field(int, id) \
+ __field(unsigned long, pswmask) \
+ __field(unsigned long, pswaddr)
+#define VCPU_ASSIGN_COMMON do { \
+ __entry->id = vcpu->vcpu_id; \
+ __entry->pswmask = vcpu->arch.sie_block->gpsw.mask; \
+ __entry->pswaddr = vcpu->arch.sie_block->gpsw.addr; \
+ } while (0);
+#define VCPU_TP_PRINTK(p_str, p_args...) \
+ TP_printk("%02d[%016lx-%016lx]: " p_str, __entry->id, \
+ __entry->pswmask, __entry->pswaddr, p_args)
+
+/*
+ * Tracepoints for SIE entry and exit.
+ */
+TRACE_EVENT(kvm_s390_sie_enter,
+ TP_PROTO(VCPU_PROTO_COMMON, int cpuflags),
+ TP_ARGS(VCPU_ARGS_COMMON, cpuflags),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(int, cpuflags)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->cpuflags = cpuflags;
+ ),
+
+ VCPU_TP_PRINTK("entering sie flags %x", __entry->cpuflags)
+ );
+
+TRACE_EVENT(kvm_s390_sie_fault,
+ TP_PROTO(VCPU_PROTO_COMMON),
+ TP_ARGS(VCPU_ARGS_COMMON),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ ),
+
+ VCPU_TP_PRINTK("%s", "fault in sie instruction")
+ );
+
+#define sie_intercept_code \
+ {0x04, "Instruction"}, \
+ {0x08, "Program interruption"}, \
+ {0x0C, "Instruction and program interuption"}, \
+ {0x10, "External request"}, \
+ {0x14, "External interruption"}, \
+ {0x18, "I/O request"}, \
+ {0x1C, "Wait state"}, \
+ {0x20, "Validity"}, \
+ {0x28, "Stop request"}
+
+TRACE_EVENT(kvm_s390_sie_exit,
+ TP_PROTO(VCPU_PROTO_COMMON, u8 icptcode),
+ TP_ARGS(VCPU_ARGS_COMMON, icptcode),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(u8, icptcode)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->icptcode = icptcode;
+ ),
+
+ VCPU_TP_PRINTK("exit sie icptcode %d (%s)", __entry->icptcode,
+ __print_symbolic(__entry->icptcode,
+ sie_intercept_code))
+ );
+
+/*
+ * Trace point for intercepted instructions.
+ */
+TRACE_EVENT(kvm_s390_intercept_instruction,
+ TP_PROTO(VCPU_PROTO_COMMON, __u16 ipa, __u32 ipb),
+ TP_ARGS(VCPU_ARGS_COMMON, ipa, ipb),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(__u64, instruction)
+ __field(char, insn[8])
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->instruction = ((__u64)ipa << 48) |
+ ((__u64)ipb << 16);
+ ),
+
+ VCPU_TP_PRINTK("intercepted instruction %016llx (%s)",
+ __entry->instruction,
+ insn_to_mnemonic((unsigned char *)
+ &__entry->instruction,
+ __entry->insn) ?
+ "unknown" : __entry->insn)
+ );
+
+/*
+ * Trace point for intercepted program interruptions.
+ */
+TRACE_EVENT(kvm_s390_intercept_prog,
+ TP_PROTO(VCPU_PROTO_COMMON, __u16 code),
+ TP_ARGS(VCPU_ARGS_COMMON, code),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(__u16, code)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->code = code;
+ ),
+
+ VCPU_TP_PRINTK("intercepted program interruption %04x",
+ __entry->code)
+ );
+
+/*
+ * Trace point for validity intercepts.
+ */
+TRACE_EVENT(kvm_s390_intercept_validity,
+ TP_PROTO(VCPU_PROTO_COMMON, __u16 viwhy),
+ TP_ARGS(VCPU_ARGS_COMMON, viwhy),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(__u16, viwhy)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->viwhy = viwhy;
+ ),
+
+ VCPU_TP_PRINTK("got validity intercept %04x", __entry->viwhy)
+ );
+
+/*
+ * Trace points for instructions that are of special interest.
+ */
+
+#define sigp_order_codes \
+ {SIGP_SENSE, "sense"}, \
+ {SIGP_EXTERNAL_CALL, "external call"}, \
+ {SIGP_EMERGENCY_SIGNAL, "emergency signal"}, \
+ {SIGP_STOP, "stop"}, \
+ {SIGP_STOP_AND_STORE_STATUS, "stop and store status"}, \
+ {SIGP_SET_ARCHITECTURE, "set architecture"}, \
+ {SIGP_SET_PREFIX, "set prefix"}, \
+ {SIGP_SENSE_RUNNING, "sense running"}, \
+ {SIGP_RESTART, "restart"}
+
+TRACE_EVENT(kvm_s390_handle_sigp,
+ TP_PROTO(VCPU_PROTO_COMMON, __u8 order_code, __u16 cpu_addr, \
+ __u32 parameter),
+ TP_ARGS(VCPU_ARGS_COMMON, order_code, cpu_addr, parameter),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(__u8, order_code)
+ __field(__u16, cpu_addr)
+ __field(__u32, parameter)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->order_code = order_code;
+ __entry->cpu_addr = cpu_addr;
+ __entry->parameter = parameter;
+ ),
+
+ VCPU_TP_PRINTK("handle sigp order %02x (%s), cpu address %04x, " \
+ "parameter %08x", __entry->order_code,
+ __print_symbolic(__entry->order_code,
+ sigp_order_codes),
+ __entry->cpu_addr, __entry->parameter)
+ );
+
+#define diagnose_codes \
+ {0x10, "release pages"}, \
+ {0x44, "time slice end"}, \
+ {0x308, "ipl functions"}, \
+ {0x500, "kvm hypercall"}, \
+ {0x501, "kvm breakpoint"}
+
+TRACE_EVENT(kvm_s390_handle_diag,
+ TP_PROTO(VCPU_PROTO_COMMON, __u16 code),
+ TP_ARGS(VCPU_ARGS_COMMON, code),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(__u16, code)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->code = code;
+ ),
+
+ VCPU_TP_PRINTK("handle diagnose call %04x (%s)", __entry->code,
+ __print_symbolic(__entry->code, diagnose_codes))
+ );
+
+TRACE_EVENT(kvm_s390_handle_lctl,
+ TP_PROTO(VCPU_PROTO_COMMON, int g, int reg1, int reg3, u64 addr),
+ TP_ARGS(VCPU_ARGS_COMMON, g, reg1, reg3, addr),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(int, g)
+ __field(int, reg1)
+ __field(int, reg3)
+ __field(u64, addr)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->g = g;
+ __entry->reg1 = reg1;
+ __entry->reg3 = reg3;
+ __entry->addr = addr;
+ ),
+
+ VCPU_TP_PRINTK("%s: loading cr %x-%x from %016llx",
+ __entry->g ? "lctlg" : "lctl",
+ __entry->reg1, __entry->reg3, __entry->addr)
+ );
+
+TRACE_EVENT(kvm_s390_handle_prefix,
+ TP_PROTO(VCPU_PROTO_COMMON, int set, u32 address),
+ TP_ARGS(VCPU_ARGS_COMMON, set, address),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(int, set)
+ __field(u32, address)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->set = set;
+ __entry->address = address;
+ ),
+
+ VCPU_TP_PRINTK("%s prefix to %08x",
+ __entry->set ? "setting" : "storing",
+ __entry->address)
+ );
+
+TRACE_EVENT(kvm_s390_handle_stap,
+ TP_PROTO(VCPU_PROTO_COMMON, u64 address),
+ TP_ARGS(VCPU_ARGS_COMMON, address),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(u64, address)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->address = address;
+ ),
+
+ VCPU_TP_PRINTK("storing cpu address to %016llx",
+ __entry->address)
+ );
+
+TRACE_EVENT(kvm_s390_handle_stfl,
+ TP_PROTO(VCPU_PROTO_COMMON, unsigned int facility_list),
+ TP_ARGS(VCPU_ARGS_COMMON, facility_list),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(unsigned int, facility_list)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->facility_list = facility_list;
+ ),
+
+ VCPU_TP_PRINTK("store facility list value %08x",
+ __entry->facility_list)
+ );
+
+TRACE_EVENT(kvm_s390_handle_stsi,
+ TP_PROTO(VCPU_PROTO_COMMON, int fc, int sel1, int sel2, u64 addr),
+ TP_ARGS(VCPU_ARGS_COMMON, fc, sel1, sel2, addr),
+
+ TP_STRUCT__entry(
+ VCPU_FIELD_COMMON
+ __field(int, fc)
+ __field(int, sel1)
+ __field(int, sel2)
+ __field(u64, addr)
+ ),
+
+ TP_fast_assign(
+ VCPU_ASSIGN_COMMON
+ __entry->fc = fc;
+ __entry->sel1 = sel1;
+ __entry->sel2 = sel2;
+ __entry->addr = addr;
+ ),
+
+ VCPU_TP_PRINTK("STSI %d.%d.%d information stored to %016llx",
+ __entry->fc, __entry->sel1, __entry->sel2,
+ __entry->addr)
+ );
+
+#endif /* _TRACE_KVM_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>