Messages in this thread | | | Date | Tue, 20 Jan 2009 10:04:00 -0200 | From | Henrique de Moraes Holschuh <> | Subject | Re: introduce delayed-leds.h to reduce code duplication |
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On Mon, 19 Jan 2009, Pavel Machek wrote: > On Mon 2009-01-12 08:05:01, Henrique de Moraes Holschuh wrote: > > On Sun, 11 Jan 2009, Pavel Machek wrote: > > > What about something like this? > > > > > > [Alternatively, I can add a flag to the leds class, and make delayed > > > leds a built-in functionality...] > > > > > > [Attached is driver that uses new infrastructure for hp_accel, but it > > > does a bit more.] > > > > FWIW, I am looking over the thinkpad-acpi side of this. I like the idea, > > but I am not completely sure I agree fully with the changes to > > thinkpad-acpi. > > > > Which isn't a problem, as long as the thinkpad-acpi hunks are NOT merged to > > any tree before my ACK, please. I will test and comment on the patch before > > the weekend. > > Any news?
Sure. Sorry for not replying earlier.
I don't like the loss of functionality of the private workqueue. I kicked the thinkpad led handling to a private workqueue in order to never tie up the system-wide one with crap spinning around in the ACPI layer, etc. In fact, all thinkpad-acpi deferred work is in the private workqueue for this reason.
This is easy enough to fix, you just need to provide both versions of the interface (standard workqueue, and private workqueue). OTOH, if nowadays the system-wide workqueue runs tasks in parallel and there is no risk of a task blocking others from completely unrelated subsystems, I can ditch the private workqueue.
Also, if it is going to be generic, I'd suggest the usual "void *data" opaque type to carry information for the driver, instead of a "led number".
I didn't see any comments from Richard, but your comment about a flag seems to imply there was a private one? IMHO enhancing the led class would be the best way to go about it, although deferred leds are simple enough that it doesn't matter much.
-- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh
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