On Wed, 2006-06-21 at 01:51 +0200, Johannes Berg wrote: > Hey, > > after cpu hotplug I decided to write some fake suspend routines for > ppc64 that always fail to see what all the drivers would say... The > first thing I saw was during the phase where all threads are stopped, > that windfarm got a signal! > > Shortly after that, the fans were revved up fully but I guess that's > expected if the wf control loop exits. > > So now I'm trying to see *why* it got a signal there. Any ideas? Is that > expected with pm and windfarm just does the wrong thing there by taking > the signal as a reason to exit the control thread? > > [code in question is windfarm_core.c:wf_thread_func] I think it's the way the freezer works ... it sends a pseudo signal to all kernel threads who are then supposed to do something like test for PF_FREEZE or something like that. Ben.
