Re: [Qemu-devel] [PATCH v2 1/5] qxl: switch qxl.c to trace-events

[Gerd Hoffmann <kraxel@redhat.com>]

  Hi,

> What about having the frequent (read: too frequent to use stderr to dump
> them since they clutter the screen, unless you 'stop' before each
> monitor command) have a postfix "_freq"? This is a stopgap, but helpful
> one, you can then do:
> trace-event qxl* on
> trace-event qxl*freq off
> 
> Instead of remembering / having conveniently ready a longer list:
> trace-event qxl* on
> trace-event qxl_interface_get_command_enter off
> trace-event qxl_interface_release_resource off
> trace-event qxl_interface_get_command_ret off
> trace-event qxl_push_free_res off

Hmm, I'd suggest to just try find better names.  These all are about
ring management (well, free_res is a bit special, but still ...), so maybe:

qxl_ring_{command,cursor}_check  (check whenever stuff is in there)
qxl_ring_{command,cursor}_get    (take item out of the ring)
qxl_ring_res_put                 (stuff item into the ring)

Then you can match them likewise easy with "qxl_ring_*", but you have
descriptive names without the IMHO ugly _freq suffix.

cheers,
  Gerd