linux-kernel - Re: [PATCH] ring-buffer: Remove unused function __rb_data_page

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Date:   Mon, 4 Dec 2017 07:05:51 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>
Subject: Re: [PATCH] ring-buffer: Remove unused function
 __rb_data_page_index()

On Wed, 17 May 2017 17:14:15 -0700
Matthias Kaehlcke <mka@...omium.org> wrote:

> This fixes the following warning when building with clang:
> 
> kernel/trace/ring_buffer.c:1842:1: error: unused function
>     '__rb_data_page_index' [-Werror,-Wunused-function]

Ug, I this patch somehow fell through. I'm applying it now.

-- Steve

> 
> Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
> ---
>  kernel/trace/ring_buffer.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
> index 4ae268e687fe..a6b87582c4ff 100644
> --- a/kernel/trace/ring_buffer.c
> +++ b/kernel/trace/ring_buffer.c
> @@ -1800,12 +1800,6 @@ void ring_buffer_change_overwrite(struct ring_buffer *buffer, int val)
>  }
>  EXPORT_SYMBOL_GPL(ring_buffer_change_overwrite);
>  
> -static __always_inline void *
> -__rb_data_page_index(struct buffer_data_page *bpage, unsigned index)
> -{
> -	return bpage->data + index;
> -}
> -
>  static __always_inline void *__rb_page_index(struct buffer_page *bpage, unsigned index)
>  {
>  	return bpage->page->data + index;