Date:   Mon, 20 Mar 2023 17:44:13 +0000
From:   Mark Rutland <mark.rutland@arm.com>
To:     Tom Rix <trix@redhat.com>
Cc:     rostedt@goodmis.org, mhiramat@kernel.org,
        linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Subject: Re: [PATCH] ftrace: set direct_ops storage-class-specifier to static
Message-ID: <ZBibbUQlkytYsoN9@FVFF77S0Q05N.cambridge.arm.com>
References: <20230311135113.711824-1-trix@redhat.com>
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On Sat, Mar 11, 2023 at 08:51:13AM -0500, Tom Rix wrote:
> smatch reports this warning
> kernel/trace/ftrace.c:2594:19: warning:
>   symbol 'direct_ops' was not declared. Should it be static?
> 
> The variable direct_ops is only used in ftrace.c, so it should be static
> 
> Signed-off-by: Tom Rix <trix@redhat.com>

This makes sense, and as this stands:

Acked-by: Mark Rutland <mark.rutland@arm.com>

... but Florent's rework of the API is going to remove this anyway:

  https://lore.kernel.org/all/20230316173811.1223508-1-revest@chromium.org/
  https://lore.kernel.org/all/20230316173811.1223508-4-revest@chromium.org/

... so if we take Florent's series, this patch isn't necessary.

Mark.

> ---
>  kernel/trace/ftrace.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
> index 29baa97d0d53..05f76dc1f0c5 100644
> --- a/kernel/trace/ftrace.c
> +++ b/kernel/trace/ftrace.c
> @@ -2591,7 +2591,7 @@ static void call_direct_funcs(unsigned long ip, unsigned long pip,
>  	arch_ftrace_set_direct_caller(fregs, addr);
>  }
>  
> -struct ftrace_ops direct_ops = {
> +static struct ftrace_ops direct_ops = {
>  	.func		= call_direct_funcs,
>  	.flags		= FTRACE_OPS_FL_DIRECT | FTRACE_OPS_FL_SAVE_REGS
>  			  | FTRACE_OPS_FL_PERMANENT,
> -- 
> 2.27.0
>