x86/tlb/trace: Export enums in used by tlb_flush tracepoint
Have the enums used in __print_symbolic() by the trace_tlb_flush()
tracepoint exported to userpace such that they can be parsed by
userspace tools.
Link: http://lkml.kernel.org/r/20150403013802.220157513@goodmis.org
Cc: Dave Hansen <dave@sr71.net>
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Tested-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/include/trace/events/tlb.h b/include/trace/events/tlb.h
index 0e76357..4250f36 100644
--- a/include/trace/events/tlb.h
+++ b/include/trace/events/tlb.h
@@ -7,11 +7,31 @@
#include <linux/mm_types.h>
#include <linux/tracepoint.h>
-#define TLB_FLUSH_REASON \
- { TLB_FLUSH_ON_TASK_SWITCH, "flush on task switch" }, \
- { TLB_REMOTE_SHOOTDOWN, "remote shootdown" }, \
- { TLB_LOCAL_SHOOTDOWN, "local shootdown" }, \
- { TLB_LOCAL_MM_SHOOTDOWN, "local mm shootdown" }
+#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,