Using regular expression filter system call

Zev Weiss zev at
Mon Apr 10 03:04:54 UTC 2017

On Mon, Apr 10, 2017 at 02:12:02AM +0900, Masatake YAMATO wrote:
>> Recently, class %sched and %clock are added. Is it necessary to add
>> regular expression to filter system call?
>Interesting feature.
>> I use '@' as the prefix of regular expression. I think following regular
>> expressions may be used. @time, @[pg]id, @^wait @xattr, @^dup, @^send,
>> @^recv, @^read, @^write, @^sem, @^shm, @^msg, @^inotify, @^pkey_
>How about '/' (slash)?
>vi and sed users may be familiar with the notation.
>Masatake YAMATO

Agreed, this sounds like it would be a very handy feature -- though I'd 
suggest /regex/ for the syntax (a slash at each end, rather than just at 
the start) to match sed, awk, perl (I think dtrace also has similar 
predicate syntax as well?) etc.

Zev Weiss

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