Re: [PATCH 5/5] blktrace: print human-readable act_mask

[Li Zefan]

Ingo Molnar wrote:
> * Li Zefan <lizf@xxxxxxxxxxxxxx> wrote:
> 
>> Print stringified act_mask instead of hex value:
>>  # cat act_mask
>>  read,write,barrier,sync,queue,requeue,issue,complete,fs,pc,ahead,meta,
>>  discard,drv_data
>>  # echo "meta,write" > act_mask
>>  # cat act_mask
>>  write,meta
> 
> btw., does user-space blktrace make use of this facility?
> 

This facility can be used when we are using ftrace blktrace.

The userspace blktrace gets the filter-list via [-A hex-mask] and [-a str-mask].

like: blktrace -d /dev/sda -a write -a meta
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