tracing: Add TRACE_SYSTEM_VAR to xhci-hcd

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. Cc: Xenia Ragiadakou <[email protected]> Cc: Sarah Sharp <[email protected]> Reviewed-by: Masami Hiramatsu <[email protected]> Tested-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
yoshikig · Apr 7, 2015 · 7267b23 · 7267b23
1 parent bd41202
commit 7267b23
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h
@@ -14,6 +14,13 @@
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM xhci-hcd
 
+/*
+ * 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 xhci_hcd
+
 #if !defined(__XHCI_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
 #define __XHCI_TRACE_H