Re: [MirageOS-devel] Logs

[Anil Madhavapeddy <anil@xxxxxxxxxx>]

> On 16 Oct 2015, at 11:18, Thomas Gazagnaire <thomas@xxxxxxxxxxxxxx> wrote:
> 
>> that could be passed around libraries as an argument, with the level stuff 
>> added by a higher level logger/monitor?
> 
> How do you decide what to filter or not? Maybe a notion of section (that 
> users can turn off and on) could be more useful?
> 
> I think xapi used to allow users to specify which section to enable either by 
> using an environment variable (ie. something like XAPILOGS=* or 
> XAPILOGS="foo:bar" to enable the "foo" and "bar" section) or a configuration 
> file. That was quite useful when debugging.

Yes, the source of the log is more valuable, so the module it came from rather 
than a global log level is more useful for aggregation.

> But maybe this is already too complex for a simple log library...

There's nothing simple about logging :-)

-anil
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