linux-kernel - Re: [PATCH --next] tracing: Make tracepoint_print

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Date:   Tue, 22 Nov 2022 17:16:40 +0800
From:   xiujianfeng <xiujianfeng@...wei.com>
To:     <rostedt@...dmis.org>, <mhiramat@...nel.or>
CC:     <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH --next] tracing: Make tracepoint_print_iter static

sorry, ignore this.

在 2022/11/22 17:10, Xiu Jianfeng 写道:
> After change in commit 4239174570da ("tracing: Make tracepoint_printk a
> static_key"), this symbol is not used outside of the file, so mark it
> static.
> 
> Signed-off-by: Xiu Jianfeng <xiujianfeng@...wei.com>
> ---
>   kernel/trace/trace.c | 2 +-
>   kernel/trace/trace.h | 2 --
>   2 files changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
> index 47a44b055a1d..11a7214a2f49 100644
> --- a/kernel/trace/trace.c
> +++ b/kernel/trace/trace.c
> @@ -85,7 +85,7 @@ void __init disable_tracing_selftest(const char *reason)
>   #endif
>   
>   /* Pipe tracepoints to printk */
> -struct trace_iterator *tracepoint_print_iter;
> +static struct trace_iterator *tracepoint_print_iter;
>   int tracepoint_printk;
>   static bool tracepoint_printk_stop_on_boot __initdata;
>   static DEFINE_STATIC_KEY_FALSE(tracepoint_printk_key);
> diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
> index 54ee5711c729..d9b470a0adf2 100644
> --- a/kernel/trace/trace.h
> +++ b/kernel/trace/trace.h
> @@ -1941,8 +1941,6 @@ static inline void tracer_hardirqs_on(unsigned long a0, unsigned long a1) { }
>   static inline void tracer_hardirqs_off(unsigned long a0, unsigned long a1) { }
>   #endif
>   
> -extern struct trace_iterator *tracepoint_print_iter;
> -
>   /*
>    * Reset the state of the trace_iterator so that it can read consumed data.
>    * Normally, the trace_iterator is used for reading the data when it is not
>