linux-kernel - Re: [PATCH 3/4] gcov: add gcov profiling infrastructure

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Date:	Tue, 12 May 2009 15:35:50 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Huang Ying <ying.huang@...el.com>, Li Wei <W.Li@....COM>,
	Michael Ellerman <michaele@....ibm.com>
Subject: Re: [PATCH 3/4] gcov: add gcov profiling infrastructure


* Peter Oberparleiter <oberpar@...ux.vnet.ibm.com> wrote:

> Ingo Molnar wrote:
>> * Peter Oberparleiter <oberpar@...ux.vnet.ibm.com> wrote:
>>
>>>>> +/* __gcov_init is called by gcc-generated constructor code for each object
>>>>> + * file compiled with -fprofile-arcs. */
> [...]
>> It isnt about the amount of comments, it is about the plain (and  
>> simple to rectify) fact that the above two-lines comment is  
>> inconsistent with other kernel code.
>
> Ok, I misunderstood when I replied. The updated patch set should contain  
> the correct changes though.
>
>>>>>                   $(asflags-y) $(AFLAGS_$(basetarget).o)
>>>>>  _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
>>>>>  +# Enable gcov profiling flags for a file, directory or for all  
>>>>> files depending
>>>>> +# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
>>>>> +# (in this order)
>>>>> +ifeq ($(CONFIG_GCOV_KERNEL),y)
>>>> Please try to use winged comments in makefiles too.
>>> What do you mean by winged comments?
>>
>> This:
>>
>>   /*
>>    * Comment .....
>>    * ...... goes here:
>>    */
>>
>> Is called a winged comment. Its makefile equivalent is:
>
> Ok. Though google disagrees on that definition (see  
> http://www.catb.org/~esr/jargon/html/W/winged-comments.html).

yeah, i guess you are right, the correct term would be something 
like 'multi-line winged comments'.

	Ingo
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