On Tue 2014-11-18 01:39:06, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
>
> The number of and dependencies between high-level power management
> Kconfig options make life much harder than necessary. Several
> conbinations of them have to be tested and supported, even though
> some of those combinations are very rarely used in practice (it
> they are used in practice at all). Moreover, the fact that we
> have separate independent Kconfig options for runtime PM and
> system suspend is a serious obscacle for integration between
> the two frameworks.
>
> To overcome these difficulties, always select PM_RUNTIME if PM_SLEEP
> is set. Among other things, this will allow system suspend callbacks
> provided by bus types and device drivers to rely on the runtime PM
> framework regardless of the kernel configuration.
3.18-rc5 still has:
config PM_RUNTIME
bool "Run-time PM core functionality"
depends on !IA64_HP_SIM
---help---
So I assume this patch is against tree where PM_RUNTIME does not
depend on anything?
> Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
> ---
>
> As a follow up.
>
> Note that we won't need the patch making genpd select PM_RUNTIME with this,
> because genpd already depends on PM.
Looking through the config file, there are more config options that
should be stripped.
config SUSPEND_FREEZER
bool "Enable freezer for suspend to RAM/standby" \
"Turning OFF this setting is NOT recommended! If in doubt, say Y."
config HIBERNATE_CALLBACKS
bool
...can we just use CONFIG_HIBERNATE, instead?
> ===================================================================
> --- linux-pm.orig/kernel/power/Kconfig
> +++ linux-pm/kernel/power/Kconfig
> @@ -94,6 +94,7 @@ config PM_STD_PARTITION
> config PM_SLEEP
> def_bool y
> depends on SUSPEND || HIBERNATE_CALLBACKS
> + select PM_RUNTIME
>
> config PM_SLEEP_SMP
> def_bool y
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
