Messages in this thread | | | Date | Tue, 4 Oct 2005 09:44:10 -0700 | From | Nish Aravamudan <> | Subject | Re: [PATCH] ppc64: Thermal control for SMU based machines |
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On 10/3/05, Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote: > This is the actual thermal control support for PowerMac8,1, PowerMac8,2 > and PowerMac9,1 machines (SMU based), that is iMac G5 and single CPU desktop. > It requires CPUFREQ to be enabled to properly deal with overtemp conditions. > The new thermal control code implements a new framework (nicknamed "windfarm") > to which I expect to port the old G5 thermal control, and possibly some of the > powerbook thermal control drivers as well in the future.
<snip>
> --- /dev/null 1970-01-01 00:00:00.000000000 +0000 > +++ linux-work/drivers/macintosh/windfarm_core.c 2005-10-04 15:17:33.000000000 +1000
<snip>
> +static int wf_thread_func(void *data) > +{ > + unsigned long next, delay; > + > + next = jiffies; > + > + DBG("wf: thread started\n"); > + > + while(!kthread_should_stop()) { > + try_to_freeze(); > + > + if (time_after_eq(jiffies, next)) { > + wf_notify(WF_EVENT_TICK, NULL); > + if (wf_overtemp) { > + wf_overtemp_counter++; > + /* 10 seconds overtemp, notify userland */ > + if (wf_overtemp_counter > 10) > + wf_critical_overtemp(); > + /* 30 seconds, shutdown */ > + if (wf_overtemp_counter > 30) { > + printk(KERN_ERR "windfarm: Overtemp " > + "for more than 30" > + " seconds, shutting down\n"); > + machine_power_off(); > + } > + } > + next += HZ; > + } > + > + set_current_state(TASK_INTERRUPTIBLE); > + delay = next - jiffies; > + if (delay <= HZ) > + schedule_timeout(delay); > + set_current_state(TASK_RUNNING);
This can be schedule_timeout_interruptible(delay); and then you can get rid of the set_current_state(TASK_RUNNING);
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