can we have a shorter title?
On Tue, Dec 29, 2015 at 02:46:49PM +0530, Keerthy wrote:
> Hi Nishanth,
>
<cut>
> >
> >I am not sure if this #ifdeffery is even needed.
> >
> >
> >Eduardo, Rui: If this is not the suggested technique, maybe you guys
> >could suggest how we could handle a case where userspace might be
> >hungup due to some reason and a case where a critical temperature
> >event in the middle of device probe was triggered?
Orderly power off is supposed to take care of this. Looking at the code,
it will force a shutdown in case execution of userland command fails:
static int __orderly_poweroff(bool force)
{
int ret;
ret = run_cmd(poweroff_cmd);
if (ret && force) {
pr_warn("Failed to start orderly shutdown: forcing the
issue\n");
/*
* I guess this should try to kick off some daemon to sync and
* poweroff asap. Or not even bother syncing if we're doing an
* emergency shutdown?
*/
emergency_sync();
kernel_power_off();
}
> >
> >Obviously, we'd like to take into consideration userspace latencies as
> >well- but that is very specific to fs being run.. not really a simple
> >problem, IMHO..
> >
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