From owner-freebsd-dtrace@freebsd.org  Fri Aug 18 07:27:45 2017
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From: Nan Xiao <xiaonan830818@gmail.com>
Date: Fri, 18 Aug 2017 15:27:42 +0800
Message-ID: <CA+MhoaObzQQX+7xZuK5q_0EDVqvBJow6xJa9igyXfE3Aqi5hTQ@mail.gmail.com>
Subject: Does DTrace on FreeBSD support macro argument?
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Hi all,

Greetings from me!

I am trying the following simple script on FreeBSD 11:

#!/usr/sbin/dtrace -s

syscall::write:entry
/pid == $1/
{
}

and get following error:

# ./tracewrite.d
dtrace: failed to compile script ./tracewrite.d: line 4: macro
argument $1 is not defined

>From this link(http://docs.oracle.com/cd/E19253-01/817-6223/chp-script-3/index.html),
it seems FreeBSD doesn't support macro argument, right? If I want to
use it, what is the correct method?

Thanks very much in advance!

Best Regards
Nan Xiao