[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH 0/4] debugcon: fix some bugs when DEBUG_DEBUGCON

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH 0/4] debugcon: fix some bugs when DEBUG_DEBUGCON
Date: Tue, 28 May 2013 07:46:28 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130513 Thunderbird/17.0.6

On 05/28/13 02:31, li guang wrote:
> 在 2013-05-27一的 11:13 +0200,Gerd Hoffmann写道:
>> On 05/24/13 04:47, liguang wrote:
>>> when enable DEBUG_DEBUGCON, there are some message
>>> printing bugs, so fix them.
>> I'd suggest to either simply remove the debug printfs or turn them into
>> tracepoints.
> sorry, why we simply remove debug message printing?
> it's un-useful at all?

It's a case-by-case thing.

Debug messages logging guest activity like port access tend to be useful
for trouble-shooting.  They should be turned into tracepoints, so they
can be toggled at runtime and integrate nicely with tracing tools.

Sometimes debug messages are just leftovers and don't serve a real
purpose (any more).  Then it is best to simply remove them.

In the debugcon case I'd tend to simply remove them given how trivial
the device is.  But if you prefer making them tracepoints I'm ok with that.


reply via email to

[Prev in Thread] Current Thread [Next in Thread]