tracing/drm: Remove unused TRACE_SYSTEM_STRING define

The tracing infrastructure is adding a macro TRACE_SYSTEM_STRING, and
hit the following build failure:

   In file included from include/trace/define_trace.h:90:0,
                    from drivers/gpu/drm/.//radeon/radeon_trace.h:209,
                    from drivers/gpu/drm/.//radeon/radeon_trace_points.c:9:
>> include/trace/ftrace.h:28:0: warning: "TRACE_SYSTEM_STRING" redefined
    #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)

Seems that the DRM folks have added their own use to the
TRACE_SYSTEM_STRING, with:

 #define TRACE_SYSTEM_STRING __stringify(TRACE_SYSTEM)

Although, I can not find its use anywhere. I could simply use another
name, but if this macro is not being used, it should be removed.

Link: http://lkml.kernel.org/r/[email protected]

Cc: Alex Deucher <[email protected]>
Cc: Christian König <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Jani Nikula <[email protected]>
Reviewed-by: Masami Hiramatsu <[email protected]>
Tested-by: Masami Hiramatsu <[email protected]>
Reported-by: kbuild test robot <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>

0 files changed, 0 insertions, 0 deletions