> From: Pavel Machek [mailto:pavel@ucw.cz]
> Acpi seems to create short-lived kernel threads, and I don't quite
> understand why.
>
> In thermal.c
>
>
> tz->timer.data = (unsigned long) tz;
> tz->timer.function = acpi_thermal_run;
> tz->timer.expires = jiffies + (HZ *
> sleep_time) / 1000;
> add_timer(&(tz->timer));
>
> and acpi_thermal_run creates kernel therad that runs
> acpi_thermal_check. Why is not acpi_thermal_check called directly? I
> don't like idea of thread being created every time thermal zone needs
> to be polled...
Are we allowed to block in a timer callback? One of the things
thermal_check does is call a control method, which in turn can be very
slow, sleep, etc., so I'd guess that's why the code tries to execute
things in its own thread.
Regards -- Andy
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This archive was generated by hypermail 2b29 : Tue Jan 07 2003 - 22:00:22 EST