2012-08-22 11:41:56

by majianpeng

Subject: About multiple queries to control using $DBGMT/dynamic_debug/control

Hi,
I used the $DBGMT/dynamic_debug/control to control printing debuginfo.But When i wote multiple queries which has at least one didn't match,
the result is ok which no error can return.
So i think i wrote correct queries.But until using dmesg, i only found error.
And if parm verbose of dynamic_debug is zero, i can't find the result by dmesg.
So i think it's not convenient.
If it did not found any query,it should return error.

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2012-08-24 18:19:45

by Jason Baron

Subject: Re: About multiple queries to control using $DBGMT/dynamic_debug/control

On Wed, Aug 22, 2012 at 07:42:14PM +0800, Jianpeng Ma wrote:
> Hi,
> I used the $DBGMT/dynamic_debug/control to control printing debuginfo.But When i wote multiple queries which has at least one didn't match,
> the result is ok which no error can return.
> So i think i wrote correct queries.But until using dmesg, i only found error.
> And if parm verbose of dynamic_debug is zero, i can't find the result by dmesg.
> So i think it's not convenient.
> If it did not found any query,it should return error.
>
> Thanks!

Hi,

You can verify what changes have occured by looking in the
$DBGMT/dynamic_debug/control file, and verifying what statements have
been matched. For example, we add a 'p' when printing is enabled.
Does that address your concern?

As these debug statements come and go, I think I'd prefer not to error
out in this case.

Thanks,

-Jason