linux-kernel - Re:Re: [PATCH] linux/trace_events.h: Remove duplicate struct declaration

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Date:   Tue, 30 Mar 2021 11:43:59 +0800 (GMT+08:00)
From:   万家兵 <wanjiabing@...o.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        kael_w@...h.net
Subject: Re:Re: [PATCH] linux/trace_events.h: Remove duplicate struct declaration

 
>On Tue, 30 Mar 2021 09:55:17 +0800>Wan Jiabing <wanjiabing@...o.com> wrote:
>
>> struct trace_array is declared twice. One has been declared
>> at forward struct declaration. Remove the duplicate.
>> And sort these forward declarations alphabetically.
>
>Um, no that's not how we sort things.
>
>> 
>> Signed-off-by: Wan Jiabing <wanjiabing@...o.com>
>> ---
>>  include/linux/trace_events.h | 7 +++----
>>  1 file changed, 3 insertions(+), 4 deletions(-)
>> 
>> diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
>> index 28e7af1406f2..29ae3ec5cab9 100644
>> --- a/include/linux/trace_events.h
>> +++ b/include/linux/trace_events.h
>> @@ -10,11 +10,11 @@
>>  #include <linux/perf_event.h>
>>  #include <linux/tracepoint.h>
>>  
>> -struct trace_array;
>>  struct array_buffer;
>> -struct tracer;
>> -struct dentry;
>>  struct bpf_prog;
>> +struct dentry;
>> +struct tracer;
>> +struct trace_array;
>
>NAK to the above. If anything, we sort it by length. But the above doesn't
>need to be touched.
>

OK, I know. I resend the v2.
Please review.

Yours,
Wan Jiabing

>>  
>>  const char *trace_print_flags_seq(struct trace_seq *p, const char *delim,
>>  				  unsigned long flags,
>> @@ -404,7 +404,6 @@ trace_get_fields(struct trace_event_call *event_call)
>>  	return event_call->class->get_fields(event_call);
>>  }
>>  
>> -struct trace_array;
>
>This part is fine.
>
>Thanks,
>
>-- Steve
>
>>  struct trace_subsystem_dir;
>>  
>>  enum {
>