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-rw-r--r--include/trace/events/tlb.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/include/trace/events/tlb.h b/include/trace/events/tlb.h
new file mode 100644
index 000000000..4250f364a
--- /dev/null
+++ b/include/trace/events/tlb.h
@@ -0,0 +1,62 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM tlb
+
+#if !defined(_TRACE_TLB_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_TLB_H
+
+#include <linux/mm_types.h>
+#include <linux/tracepoint.h>
+
+#define TLB_FLUSH_REASON \
+ EM( TLB_FLUSH_ON_TASK_SWITCH, "flush on task switch" ) \
+ EM( TLB_REMOTE_SHOOTDOWN, "remote shootdown" ) \
+ EM( TLB_LOCAL_SHOOTDOWN, "local shootdown" ) \
+ EMe( TLB_LOCAL_MM_SHOOTDOWN, "local mm shootdown" )
+
+/*
+ * First define the enums in TLB_FLUSH_REASON to be exported to userspace
+ * via TRACE_DEFINE_ENUM().
+ */
+#undef EM
+#undef EMe
+#define EM(a,b) TRACE_DEFINE_ENUM(a);
+#define EMe(a,b) TRACE_DEFINE_ENUM(a);
+
+TLB_FLUSH_REASON
+
+/*
+ * Now redefine the EM() and EMe() macros to map the enums to the strings
+ * that will be printed in the output.
+ */
+#undef EM
+#undef EMe
+#define EM(a,b) { a, b },
+#define EMe(a,b) { a, b }
+
+TRACE_EVENT_CONDITION(tlb_flush,
+
+ TP_PROTO(int reason, unsigned long pages),
+ TP_ARGS(reason, pages),
+
+ TP_CONDITION(cpu_online(smp_processor_id())),
+
+ TP_STRUCT__entry(
+ __field( int, reason)
+ __field(unsigned long, pages)
+ ),
+
+ TP_fast_assign(
+ __entry->reason = reason;
+ __entry->pages = pages;
+ ),
+
+ TP_printk("pages:%ld reason:%s (%d)",
+ __entry->pages,
+ __print_symbolic(__entry->reason, TLB_FLUSH_REASON),
+ __entry->reason)
+);
+
+#endif /* _TRACE_TLB_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>