linux-kernel - Re: [PATCH 01/18 v3] tracing/drm: Remove unused TRACE_SYSTEM

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Message-ID: <5523292C.7080305@hitachi.com>
Date:	Tue, 07 Apr 2015 09:47:40 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	David Airlie <airlied@...ux.ie>,
	Daniel Vetter <daniel.vetter@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	kbuild test robot <fengguang.wu@...el.com>
Subject: Re: [PATCH 01/18 v3] tracing/drm: Remove unused TRACE_SYSTEM_STRING
 define

(2015/04/03 10:38), Steven Rostedt wrote:
> From: Steven Rostedt <rostedt@...dmis.org>
> 
> 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/20150402123736.01eda052@gandalf.local.home
> 
> Cc: Alex Deucher <alexander.deucher@....com>
> Cc: Christian KÃ¶nig <christian.koenig@....com>
> Cc: David Airlie <airlied@...ux.ie>
> Cc: Daniel Vetter <daniel.vetter@...el.com>
> Cc: Jani Nikula <jani.nikula@...ux.intel.com>
> Reported-by: kbuild test robot <fengguang.wu@...el.com>
> Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>

Thanks,

> ---
>  drivers/gpu/drm/drm_trace.h           | 1 -
>  drivers/gpu/drm/i915/i915_trace.h     | 1 -
>  drivers/gpu/drm/radeon/radeon_trace.h | 1 -
>  3 files changed, 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_trace.h b/drivers/gpu/drm/drm_trace.h
> index 27cc95f36381..ce3c42813fbb 100644
> --- a/drivers/gpu/drm/drm_trace.h
> +++ b/drivers/gpu/drm/drm_trace.h
> @@ -7,7 +7,6 @@
>  
>  #undef TRACE_SYSTEM
>  #define TRACE_SYSTEM drm
> -#define TRACE_SYSTEM_STRING __stringify(TRACE_SYSTEM)
>  #define TRACE_INCLUDE_FILE drm_trace
>  
>  TRACE_EVENT(drm_vblank_event,
> diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
> index 6058a01b4443..d776621c8521 100644
> --- a/drivers/gpu/drm/i915/i915_trace.h
> +++ b/drivers/gpu/drm/i915/i915_trace.h
> @@ -12,7 +12,6 @@
>  
>  #undef TRACE_SYSTEM
>  #define TRACE_SYSTEM i915
> -#define TRACE_SYSTEM_STRING __stringify(TRACE_SYSTEM)
>  #define TRACE_INCLUDE_FILE i915_trace
>  
>  /* pipe updates */
> diff --git a/drivers/gpu/drm/radeon/radeon_trace.h b/drivers/gpu/drm/radeon/radeon_trace.h
> index ce075cb08cb2..fdce4062901f 100644
> --- a/drivers/gpu/drm/radeon/radeon_trace.h
> +++ b/drivers/gpu/drm/radeon/radeon_trace.h
> @@ -9,7 +9,6 @@
>  
>  #undef TRACE_SYSTEM
>  #define TRACE_SYSTEM radeon
> -#define TRACE_SYSTEM_STRING __stringify(TRACE_SYSTEM)
>  #define TRACE_INCLUDE_FILE radeon_trace
>  
>  TRACE_EVENT(radeon_bo_create,
> -- 2.1.4
> 


-- 
Masami HIRAMATSU
Linux Technology Research Center, System Productivity Research Dept.
Center for Technology Innovation - Systems Engineering
Hitachi, Ltd., Research & Development Group
E-mail: masami.hiramatsu.pt@...achi.com


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