KVM: PPC: Use symbols for exit trace

Exit traces are a lot easier to read when you don't have to remember
cryptic numbers for guest exit reasons. Symbolify them in our trace
output.

Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 56 insertions, 2 deletions

diff --git a/arch/powerpc/kvm/trace.h b/arch/powerpc/kvm/trace.h
index cb2780a42fd8..519aba8bb3d3 100644
--- a/arch/powerpc/kvm/trace.h
+++ b/arch/powerpc/kvm/trace.h
@@ -31,6 +31,60 @@ TRACE_EVENT(kvm_ppc_instr,
                   __entry->inst, __entry->pc, __entry->emulate)
 );
 
+#ifdef CONFIG_PPC_BOOK3S
+#define kvm_trace_symbol_exit \
+        {0x100, "SYSTEM_RESET"}, \
+        {0x200, "MACHINE_CHECK"}, \
+        {0x300, "DATA_STORAGE"}, \
+        {0x380, "DATA_SEGMENT"}, \
+        {0x400, "INST_STORAGE"}, \
+        {0x480, "INST_SEGMENT"}, \
+        {0x500, "EXTERNAL"}, \
+        {0x501, "EXTERNAL_LEVEL"}, \
+        {0x502, "EXTERNAL_HV"}, \
+        {0x600, "ALIGNMENT"}, \
+        {0x700, "PROGRAM"}, \
+        {0x800, "FP_UNAVAIL"}, \
+        {0x900, "DECREMENTER"}, \
+        {0x980, "HV_DECREMENTER"}, \
+        {0xc00, "SYSCALL"}, \
+        {0xd00, "TRACE"}, \
+        {0xe00, "H_DATA_STORAGE"}, \
+        {0xe20, "H_INST_STORAGE"}, \
+        {0xe40, "H_EMUL_ASSIST"}, \
+        {0xf00, "PERFMON"}, \
+        {0xf20, "ALTIVEC"}, \
+        {0xf40, "VSX"}
+#else
+#define kvm_trace_symbol_exit \
+        {0, "CRITICAL"}, \
+        {1, "MACHINE_CHECK"}, \
+        {2, "DATA_STORAGE"}, \
+        {3, "INST_STORAGE"}, \
+        {4, "EXTERNAL"}, \
+        {5, "ALIGNMENT"}, \
+        {6, "PROGRAM"}, \
+        {7, "FP_UNAVAIL"}, \
+        {8, "SYSCALL"}, \
+        {9, "AP_UNAVAIL"}, \
+        {10, "DECREMENTER"}, \
+        {11, "FIT"}, \
+        {12, "WATCHDOG"}, \
+        {13, "DTLB_MISS"}, \
+        {14, "ITLB_MISS"}, \
+        {15, "DEBUG"}, \
+        {32, "SPE_UNAVAIL"}, \
+        {33, "SPE_FP_DATA"}, \
+        {34, "SPE_FP_ROUND"}, \
+        {35, "PERFORMANCE_MONITOR"}, \
+        {36, "DOORBELL"}, \
+        {37, "DOORBELL_CRITICAL"}, \
+        {38, "GUEST_DBELL"}, \
+        {39, "GUEST_DBELL_CRIT"}, \
+        {40, "HV_SYSCALL"}, \
+        {41, "HV_PRIV"}
+#endif
+
 TRACE_EVENT(kvm_exit,
         TP_PROTO(unsigned int exit_nr, struct kvm_vcpu *vcpu),
         TP_ARGS(exit_nr, vcpu),
@@ -62,7 +116,7 @@ TRACE_EVENT(kvm_exit,
                 __entry->last_inst      = vcpu->arch.last_inst;
         ),
 
-        TP_printk("exit=0x%x"
+        TP_printk("exit=%s"
                 " | pc=0x%lx"
                 " | msr=0x%lx"
                 " | dar=0x%lx"
@@ -71,7 +125,7 @@ TRACE_EVENT(kvm_exit,
 #endif
                 " | last_inst=0x%lx"
                 ,
-                __entry->exit_nr,
+                __print_symbolic(__entry->exit_nr, kvm_trace_symbol_exit),
                 __entry->pc,
                 __entry->msr,
                 __entry->dar,