linux-kernel - Re: [PATCH 1/3] trace: fix sparse warnings: make symbols static

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Date:	Tue, 10 Feb 2009 22:42:08 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Hannes Eder <hannes@...neseder.net>
Cc:	Ingo Molnar <mingo@...e.hu>, kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] trace: fix sparse warnings: make symbols static

On Tue, Feb 10, 2009 at 07:44:12PM +0100, Hannes Eder wrote:
> Impact: make global variables and a global function static
> 
> The function '__trace_userstack' does not seem to have a caller, so it
> is commented out.


I guess it can even be dropped :-)

 
> Fix this sparse warnings:
>   kernel/trace/trace.c:82:5: warning: symbol 'tracing_disabled' was not declared. Should it be static?
>   kernel/trace/trace.c:600:10: warning: symbol 'trace_record_cmdline_disabled' was not declared. Should it be static?
>   kernel/trace/trace.c:957:6: warning: symbol '__trace_userstack' was not declared. Should it be static?
>   kernel/trace/trace.c:1694:5: warning: symbol 'tracing_release' was not declared. Should it be static?
> 
> Signed-off-by: Hannes Eder <hannes@...neseder.net>
> ---
>  kernel/trace/trace.c |   10 ++++++----
>  1 files changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
> index ef4dbac..0e7c84f 100644
> --- a/kernel/trace/trace.c
> +++ b/kernel/trace/trace.c
> @@ -79,7 +79,7 @@ static int dummy_set_flag(u32 old_flags, u32 bit, int set)
>   * of the tracer is successful. But that is the only place that sets
>   * this back to zero.
>   */
> -int tracing_disabled = 1;
> +static int tracing_disabled = 1;
>  
>  static DEFINE_PER_CPU(local_t, ftrace_cpu_disabled);
>  
> @@ -597,7 +597,7 @@ static int cmdline_idx;
>  static DEFINE_SPINLOCK(trace_cmdline_lock);
>  
>  /* temporary disable recording */
> -atomic_t trace_record_cmdline_disabled __read_mostly;
> +static atomic_t trace_record_cmdline_disabled __read_mostly;
>  
>  static void trace_init_cmdlines(void)
>  {
> @@ -954,10 +954,12 @@ static void ftrace_trace_userstack(struct trace_array *tr,
>  #endif
>  }
>  
> -void __trace_userstack(struct trace_array *tr, unsigned long flags)
> +#ifdef UNUSED
> +static void __trace_userstack(struct trace_array *tr, unsigned long flags)
>  {
>  	ftrace_trace_userstack(tr, flags, preempt_count());
>  }
> +#endif /* UNUSED */
>  
>  static void
>  ftrace_trace_special(void *__tr,
> @@ -1691,7 +1693,7 @@ int tracing_open_generic(struct inode *inode, struct file *filp)
>  	return 0;
>  }
>  
> -int tracing_release(struct inode *inode, struct file *file)
> +static int tracing_release(struct inode *inode, struct file *file)
>  {
>  	struct seq_file *m = (struct seq_file *)file->private_data;
>  	struct trace_iterator *iter = m->private;
> 
> --
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