[ltt-dev] move marker-control file into debugfs

[guijianfeng@cn.fujitsu.com (Gui Jianfeng)]

Mathieu Desnoyers wrote:
> * Gui Jianfeng (guijianfeng at cn.fujitsu.com) wrote:
>> Hi Mathieu,
>>
>> I'd like to move "/proc/ltt" into debugfs. How do
>> you think of that? If you don't object, i'll post
>> a patch later, and update ltt-arm and other relative
>> tools.
>>
> 
> Yes, this should be done. Please have a look at the discussion I had
> with Zhaolei on this. It was on the ltt-dev ML.
> 
> Basically, the idea is to change the semantics a bit. The following
> directory tree would be great :
> 
> /mnt/debugfs/ltt/markers/
>                          <channel_names>/
>                                          <marker_names>/
> 
> And within each individual <marker_names>/ directory, we would have
> those files :
> 
> enabled (write, takes Y, y, 1 or N, n, 0. See ltt-trace-control.c.)
>         (read, prints 1 or 0)
> 
> We may want to remove the ability to connect markers to specific probes.
> Markers would always be only connected to the default serializer.
> Markers using ltt-type-serializer does not use the probe pointer anyway.
> 
> We will probably want to let the
> kernel/marker.c:add_marker()/remove_marker() code call into the debugfs
> interface code to update the directory tree accordingly.

  Thanks for your comments, i'll see what i can do.

> 
> Regards,
> 
> Mathieu
> 
> 
>> -- 
>> Regards
>> Gui Jianfeng
>>
>>
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>>
> 

-- 
Regards
Gui Jianfeng