* Re: [PATCH] PM: Hide CONFIG_PM from users
2011-02-07 12:40 ` [PATCH] PM: Hide CONFIG_PM from users Geert Uytterhoeven
@ 2011-02-07 12:40 ` Geert Uytterhoeven
2011-02-07 13:26 ` Mark Brown
1 sibling, 0 replies; 3+ messages in thread
From: Geert Uytterhoeven @ 2011-02-07 12:40 UTC (permalink / raw)
To: Mark Brown
Cc: Rafael J. Wysocki, Len Brown, Alan Stern, linux-pm, linux-kernel,
Andrew Morton, Dmitry Torokhov, linux-embedded, linux-arch
On Mon, Feb 7, 2011 at 13:22, Mark Brown
<broonie@opensource.wolfsonmicro.com> wrote:
> It is very rare to find a current system which is both sufficiently
> resource constrained to want to compile out power management support
> and sufficiently power insensitive to be able to tolerate doing so.
Hmmm...
> --- a/kernel/power/Kconfig
> +++ b/kernel/power/Kconfig
> @@ -1,23 +1,6 @@
> config PM
> - bool "Power Management support"
> - depends on !IA64_HP_SIM
> - ---help---
> - "Power Management" means that parts of your computer are shut
> - off or put into a power conserving "sleep" mode if they are not
> - being used. There are two competing standards for doing this: APM
> - and ACPI. If you want to use either one, say Y here and then also
> - to the requisite support below.
Good to see the PC-centric comments are going away :-)
> -
> - Power Management is most important for battery powered laptop
> - computers; if you have a laptop, check out the Linux Laptop home
> - page on the WWW at <http://www.linux-on-laptops.com/> or
> - Tuxmobil - Linux on Mobile Computers at <http://www.tuxmobil.org/>
> - and the Battery Powered Linux mini-HOWTO, available from
> - <http://www.tldp.org/docs.html#howto>.
> -
> - Note that, even if you say N here, Linux on the x86 architecture
> - will issue the hlt instruction if nothing is to be done, thereby
> - sending the processor to sleep and saving power.
> + bool
> + default y if !IA64_HP_SIM
The following architectures do not source "kernel/power/Kconfig":
alpha
cris
h8300
Kconfig
m32r
m68k
m68knommu
microblaze
parisc
score
sparc
tile
um
xtensa
Which means that (for now) I don't have to care that CONFIG_PM becomes
unclearable. Other people may care, though...
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] PM: Hide CONFIG_PM from users
2011-02-07 12:40 ` [PATCH] PM: Hide CONFIG_PM from users Geert Uytterhoeven
2011-02-07 12:40 ` Geert Uytterhoeven
@ 2011-02-07 13:26 ` Mark Brown
1 sibling, 0 replies; 3+ messages in thread
From: Mark Brown @ 2011-02-07 13:26 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Rafael J. Wysocki, Len Brown, Alan Stern, linux-pm, linux-kernel,
Andrew Morton, Dmitry Torokhov, linux-embedded, linux-arch
On Mon, Feb 07, 2011 at 01:40:28PM +0100, Geert Uytterhoeven wrote:
> Which means that (for now) I don't have to care that CONFIG_PM becomes
> unclearable. Other people may care, though...
The whole point of the patch is that (other than the IA64 emulator which
explicitly requires that CONFIG_PM be disabled) I strongly suspect that
nobody is actually using this configuration except as a result of
randconfig type testing.
^ permalink raw reply [flat|nested] 3+ messages in thread