linux-kernel - Re: [PATCH v2 0/3] Perf support to SDT markers

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Message-ID: <5254041D.70205@linux.vnet.ibm.com>
Date:	Tue, 08 Oct 2013 18:39:49 +0530
From:	Hemant <hkshaw@...ux.vnet.ibm.com>
To:	Namhyung Kim <namhyung@...nel.org>
CC:	"Frank Ch. Eigler" <fche@...hat.com>, linux-kernel@...r.kernel.org,
	srikar@...ux.vnet.ibm.com, peterz@...radead.org, oleg@...hat.com,
	hegdevasant@...ux.vnet.ibm.com, mingo@...hat.com, anton@...hat.com,
	systemtap@...rceware.org, masami.hiramatsu.pt@...achi.com,
	aravinda@...ux.vnet.ibm.com
Subject: Re: [PATCH v2 0/3] Perf support to SDT markers

On 10/08/2013 02:40 PM, Namhyung Kim wrote:
> Hi Frank,
>
> On Mon, 07 Oct 2013 11:47:09 -0400, Frank Ch. Eigler wrote:
>> Hemant Kumar <hkshaw@...ux.vnet.ibm.com> writes:
>>
>>> [...]
>>> A simple example to show this follows.
>>> - Create a file with .d extension and mention the probe names in it with
>>> provider name and marker name.
>>> [...]
>>> - Now create the probes.h and probes.o file :
>>> $ dtrace -C -h -s probes.d -o probes.h
>>> $ dtrace -C -G -s probes.d -o probes.o
>>> [...]
>> It may be worthwhile to document an even-simpler case:
>>
>> - no .d file
>> - no invocation of the dtrace python script
>> - no generated .h or .o file
>> - in the C file, just add:
>>
>>    #include <sys/sdt.h>
>>
>>    void main () {
>>         /* ... */
>>         STAP_PROBE(provider_name,probe_name);
>>         /* ... */
>>    }
>>
>> - gcc file.c
>> - stap -l 'process("./a.out").mark("*")' to list
> Yes, looks much simpler and better.
>
> Hemant, would you add it to the doc too?
>
> Thanks,
> Namhyung
>

Yes, it will be good to add this simpler example in the doc.

-- 
Thanks
Hemant

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