Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: apm emulation driver broken ? | Date | Sat, 17 Nov 2007 10:59:56 +0100 |
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On Saturday, 17 of November 2007, Franck Bui-Huu wrote: > Rafael J. Wysocki wrote: > > However, using PF_NOFREEZE to prevent this from happening doesn't seem to be > > a good idea. > > > > Indeed but... > > > I'd probably use wait_event_freezable() (defined in > > include/linux/freezer.h) for that. > > ...I would just revert this bits from now to make sure this driver > work again for v2.6.24.
I'd prefer not to.
The PF_NOFREEZE was not present in 2.6.23 already and I wouldn't like to reintroduce it now.
Why do you think that using wait_event_freezable() would not work, BTW?
> > It tries to send them fake signals and waits for them to freeze. If > > they don't freeze within the timeout, it fails and clears their > > TIF_FREEZE bits. > > But send_fake_signal() seems to wake up task in INTERRUPTIBLE state > only. Looking at signal_wake_up(), it basically do: > > wake_up_state(t, TASK_INTERRUPTIBLE); > > What am I missing ?
Nothing. :-)
I didn't remember the change that made the freezer use TASK_INTERRUPTIBLE explicitly in there (should have looked at the current code before replying).
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