tracing: Add TRACE_SYSTEM_VAR to kvm-s390

New code will require TRACE_SYSTEM to be a valid C variable name, but some tracepoints have TRACE_SYSTEM with '-' and not '_', so it can not be used. Instead, add a TRACE_SYSTEM_VAR that can give the tracing infrastructure a unique name for the trace system. Link: http://lkml.kernel.org/r/[email protected] Cc: Martin Schwidefsky <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: Christian Borntraeger <[email protected]> Acked-by: Cornelia Huck <[email protected]> Reviewed-by: Masami Hiramatsu <[email protected]> Tested-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
wentasah · Apr 7, 2015 · bd41202 · bd41202
1 parent 882156e
commit bd41202
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/arch/s390/kvm/trace-s390.h b/arch/s390/kvm/trace-s390.h
@@ -9,6 +9,13 @@
 #undef TRACE_INCLUDE_FILE
 #define TRACE_INCLUDE_FILE trace-s390
 
+/*
+ * The TRACE_SYSTEM_VAR defaults to TRACE_SYSTEM, but must be a
+ * legitimate C variable. It is not exported to user space.
+ */
+#undef TRACE_SYSTEM_VAR
+#define TRACE_SYSTEM_VAR kvm_s390
+
 /*
  * Trace point for the creation of the kvm instance.
  */