dtrace discuss - Mar 2006 - DTRACE_PROBE2() how to use it in the device driver code

Gurus,

I noticed in OpenSolaris kernel code  some drivers use DTRACE_PROBE2() in the
driver code, I wonder if there is any document to tell how to use it. Can I use
DTRACE_PROBE2() to replace cmn_err()?

Thanks
john
This message posted from opensolaris.org

On Thu, Mar 23, 2006 at 11:52:15AM -0800, Qiang Liu
wrote:
> Gurus,
> 
> I noticed in OpenSolaris kernel code some drivers use DTRACE_PROBE2()
> in the driver code, I wonder if there is any document to tell how to
> use it. Can I use DTRACE_PROBE2() to replace cmn_err()?
Look at the "sdt Provider" chapter in the Solaris Dynamic Tracing
Guide.
Currently, the URL is:

http://docs.sun.com/app/docs/doc/817-6223/6mlkidlkd?a=view

Near the end of the page is an explanation of how to insert the probes
into your device driver.

(unfortunately, these seem to change on a semi-random basis, so the URL
may only be good for a few days)

Cheers,
- jonathan
> Thanks
> john
> This message posted from opensolaris.org
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org
-- 
Jonathan Adams, Solaris Kernel Development

Thanks alot, it seems like I can get rid of the cmn_err/printf in my driver
code.
BTW, is there any plan to support DTRACE back in s8/s9?
This message posted from opensolaris.org

On Thu, Mar 23, 2006 at 02:29:02PM -0800, Qiang Liu
wrote:
> Thanks alot, it seems like I can get rid of the cmn_err/printf in my
> driver code.
<nod>
> BTW, is there any plan to support DTRACE back in s8/s9?
No;  it requires infrastructure which is only in Solaris 10.

Cheers,
- jonathan

-- 
Jonathan Adams, Solaris Kernel Development