Re: Journaling: Surviving or allowing unclean shutdown?

Mike Touloumtzis
2001-01-05T16:56:05Z

On Thu, Jan 04, 2001 at 06:11:11PM +0000, Alan Cox wrote:
> > in an enbedded device you can
> > 1. setup the power switch so it doesn't actually turn things off (it
> > issues the shutdown command instead)
>
> Costs too much money

Many newer cell phones, even low spec ones, will have a software
power switch (usually with a hardware override after about 5 seconds
of continuous press). There are many other concessions that need to
be made to power efficiency, like the ability to toggle power to even
very minor peripherals and chips (not only each CPU and DSP, but the bus
controllers and UARTs connecting things together). These things sell
in the millions, so their designers can easily budget the custom logic.

miket