On Wed, 26 Aug 2009, Rafael J. Wysocki wrote: > Hi, > > The following patches introduce a mechanism allowing us to execute device > drivers' suspend and resume callbacks asynchronously during system sleep > transitions, such as suspend to RAM. > > The idea is explained in the changelogs of the first two patches. > > Comments welcome. I've been terribly busy and haven't had a chance to look at this. The earlier version seemed to have a bunch of mutual-exclusion issues; are they resolved now? There were also some problems involving unsafe iteration over the dpm_list -- remember that devices can be unregistered at any time, not just while they are suspending or resuming. When a device finishes, instead of having the async thread look for another device to work on, I think it would be better to have the thread check the dependents of the current device. Those which are now ready can be added to a "device-ready" list, which is used to direct the actions of new async threads. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
