[dpdk-dev] [PATCH v4 07/11] eal: add log level help

[Thomas Monjalon]

23/03/2021 19:18, David Marchand:
> On Tue, Mar 23, 2021 at 4:10 PM Thomas Monjalon <thomas at monjalon.net> wrote:
> > 23/03/2021 14:37, David Marchand:
> > > On Sun, Mar 21, 2021 at 11:32 PM Thomas Monjalon <thomas at monjalon.net> wrote:
> > > >
> > > > The option --log-level was not completely described in the usage text,
> > > > and it was difficult to guess the names of the log types and levels.
> > > >
> > > > A new value "help" is accepted after --log-level to give more details
> > > > about the syntax and listing the log types and levels.
> > > >
> > > > The array "levels" used for level name parsing is replaced with
> > > > a (modified) existing function which was used in rte_log_dump().
> > >
> > > If we forget about the slightly different formatting, why not simply
> > > reuse rte_log_dump?
> > > It has the advantage of listing the default level for each logtype
> > > that a user cannot guess otherwise.
> >
> > I considered rte_log_dump() too much verbose for the help text.
> > It is printing the global level and the logtype ids.
> 
> Yes, it gives all the info about the log subsystem.
> 
> > The need for the end-user in the help is different of a debug dump.
> 
> The result of rte_log_list_types is a list in link-time order.
> At least it is worth sorting alphabetically for users.

Yes sorting could be nice.

> What about default log levels?

No strong opinion. The default is more or less always the same.
If you believe it helps the user, then OK to add default levels.