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-rw-r--r--arch/x86/include/asm/msr-trace.h58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/x86/include/asm/msr-trace.h b/arch/x86/include/asm/msr-trace.h
new file mode 100644
index 000000000..f6adbe968
--- /dev/null
+++ b/arch/x86/include/asm/msr-trace.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM msr
+
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE msr-trace
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH asm/
+
+#if !defined(_TRACE_MSR_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_MSR_H
+
+#include <linux/tracepoint.h>
+
+/*
+ * Tracing for x86 model specific registers. Directly maps to the
+ * RDMSR/WRMSR instructions.
+ */
+
+DECLARE_EVENT_CLASS(msr_trace_class,
+ TP_PROTO(unsigned msr, u64 val, int failed),
+ TP_ARGS(msr, val, failed),
+ TP_STRUCT__entry(
+ __field( unsigned, msr )
+ __field( u64, val )
+ __field( int, failed )
+ ),
+ TP_fast_assign(
+ __entry->msr = msr;
+ __entry->val = val;
+ __entry->failed = failed;
+ ),
+ TP_printk("%x, value %llx%s",
+ __entry->msr,
+ __entry->val,
+ __entry->failed ? " #GP" : "")
+);
+
+DEFINE_EVENT(msr_trace_class, read_msr,
+ TP_PROTO(unsigned msr, u64 val, int failed),
+ TP_ARGS(msr, val, failed)
+);
+
+DEFINE_EVENT(msr_trace_class, write_msr,
+ TP_PROTO(unsigned msr, u64 val, int failed),
+ TP_ARGS(msr, val, failed)
+);
+
+DEFINE_EVENT(msr_trace_class, rdpmc,
+ TP_PROTO(unsigned msr, u64 val, int failed),
+ TP_ARGS(msr, val, failed)
+);
+
+#endif /* _TRACE_MSR_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>