Re: [RFC] Refactor kenter/kleave/kdebug macros

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On Mon, May 18, 2015 at 4:29 PM, David Howells <dhowells@xxxxxxxxxx> wrote:
> Leon Romanovsky <leon@xxxxxxx> wrote:
>
>> Blind conversion to pr_debug will blow the code because it will be always
>> compiled in.
>
> No, it won't.
Sorry, you are right.

>
>> Additionally, It looks like the output of these macros can be viewed by ftrace
>> mechanism.
>
> *blink* It can?
I was under strong impression that "function" and "function_graph"
tracers will give similar kenter/kleave information. Do I miss
anything important, except the difference in output format?

>
>> Maybe we should delete them from mm/nommu.c as was pointed by Joe?
>
> Why?
If ftrace is sufficient to get the debug information, there will no
need to duplicate it.

>
> David

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