Re: [PATCH v4] misc: Allow selective disabling of debug facility names

[Daniel Kiper]

On Sat, Jan 01, 2022 at 11:02:59PM -0600, Glenn Washburn wrote:
> Sometimes you only know which debug logging facility names you want to
> turn off, not necessarily all the ones you want enabled. This patch allows
> the debug string to contain facility names in the $debug variable which are
> prefixed with a "-" to disable debug log messages for that conditional. Say
> you want all debug logging on except for btrfs and scripting, then do:
>  "set debug=all,-btrfs,-scripting"
>
> Note, that only the last occurence of the facility name with or without a
> leading "-" is considered. So simply appending ",-facilityname" to the
> $debug variable will disable that conditional. To illustrate, the command
> "set debug=all,-btrfs,-scripting,btrfs" will enable btrfs.
>
> Also, add documentation explaining this new behavior.
>
> Signed-off-by: Glenn Washburn <development@efficientek.com>

Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

Daniel