Re: [PATCH (2.6.25) 2/2] suspend: clean up Kconfig

From: Rafael J. Wysocki
Date: Wed Nov 07 2007 - 17:03:19 EST

On Wednesday, 7 of November 2007, Johannes Berg wrote:
> This cleans up the suspend Kconfig and removes the need to
> declare centrally which architectures support suspend. All
> architectures that currently support suspend are modified
> accordingly.
>
> Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>

Acked-by: Rafael J. Wysocki <rjw@xxxxxxx>

> Cc: linuxppc-dev@xxxxxxxxxx
> Cc: linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx
> Cc: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
> Cc: Scott Wood <scottwood@xxxxxxxxxxxxx>
> Cc: David Howells <dhowells@xxxxxxxxxx>
> Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
> Cc: linux-mips@xxxxxxxxxxxxxx
> Cc: Paul Mundt <lethal@xxxxxxxxxxxx>
> Cc: Bryan Wu <bryan.wu@xxxxxxxxxx>
> Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
> ---
> Architecture maintainers should evaluate whether their
> ARCH_SUSPEND_POSSIBLE symbol should be set only under
> stricter circumstances like I've done for powerpc.
>
> Always setting it is not usually a problem, however, since the
> infrastructure is only available for use after suspend_set_ops().
>
> arch/arm/Kconfig | 3 +++
> arch/blackfin/Kconfig | 4 ++++
> arch/frv/Kconfig | 5 +++++
> arch/i386/Kconfig | 4 ++++
> arch/mips/Kconfig | 4 ++++
> arch/powerpc/Kconfig | 4 ++++
> arch/sh/Kconfig | 4 ++++
> arch/x86_64/Kconfig | 3 +++
> kernel/power/Kconfig | 21 +++------------------
> 9 files changed, 34 insertions(+), 18 deletions(-)
>
> --- everything.orig/arch/i386/Kconfig 2007-11-07 14:45:28.591544215 +0100
> +++ everything/arch/i386/Kconfig 2007-11-07 14:45:28.631515461 +0100
> @@ -1323,3 +1323,7 @@ config KTIME_SCALAR
> config ARCH_HIBERNATION_POSSIBLE
> def_bool y
> depends on !SMP || !X86_VOYAGER
> +
> +config ARCH_SUSPEND_POSSIBLE
> + def_bool y
> + depends on !X86_VOYAGER
> --- everything.orig/arch/x86_64/Kconfig 2007-11-07 14:45:28.591544215 +0100
> +++ everything/arch/x86_64/Kconfig 2007-11-07 14:45:28.631515461 +0100
> @@ -716,6 +716,9 @@ menu "Power management options"
>
> source kernel/power/Kconfig
>
> +config ARCH_SUSPEND_POSSIBLE
> + def_bool y
> +
> config ARCH_HIBERNATION_POSSIBLE
> def_bool y
>
> --- everything.orig/kernel/power/Kconfig 2007-11-07 14:45:28.591544215 +0100
> +++ everything/kernel/power/Kconfig 2007-11-07 14:45:28.641531465 +0100
> @@ -64,7 +64,7 @@ config PM_TRACE
> config PM_SLEEP_SMP
> bool
> depends on SMP
> - depends on SUSPEND_SMP_POSSIBLE || ARCH_HIBERNATION_POSSIBLE
> + depends on ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE
> depends on PM_SLEEP
> select HOTPLUG_CPU
> default y
> @@ -74,29 +74,14 @@ config PM_SLEEP
> depends on SUSPEND || HIBERNATION
> default y
>
> -config SUSPEND_UP_POSSIBLE
> - bool
> - depends on (X86 && !X86_VOYAGER) || PPC || ARM || BLACKFIN || MIPS \
> - || SUPERH || FRV
> - depends on !SMP
> - default y
> -
> -config SUSPEND_SMP_POSSIBLE
> - bool
> - depends on (X86 && !X86_VOYAGER) \
> - || (PPC && (PPC_PSERIES || PPC_PMAC)) || ARM
> - depends on SMP
> - default y
> -
> config SUSPEND
> bool "Suspend to RAM and standby"
> - depends on PM
> - depends on SUSPEND_UP_POSSIBLE || SUSPEND_SMP_POSSIBLE
> + depends on PM && ARCH_SUSPEND_POSSIBLE
> default y
> ---help---
> Allow the system to enter sleep states in which main memory is
> powered and thus its contents are preserved, such as the
> - suspend-to-RAM state (i.e. the ACPI S3 state).
> + suspend-to-RAM state (e.g. the ACPI S3 state).
>
> config HIBERNATION
> bool "Hibernation (aka 'suspend to disk')"
> --- everything.orig/arch/blackfin/Kconfig 2007-11-07 14:44:55.551521971 +0100
> +++ everything/arch/blackfin/Kconfig 2007-11-07 14:45:28.641531465 +0100
> @@ -993,6 +993,10 @@ endmenu
> menu "Power management options"
> source "kernel/power/Kconfig"
>
> +config ARCH_SUSPEND_POSSIBLE
> + def_bool y
> + depends on !SMP
> +
> choice
> prompt "Select PM Wakeup Event Source"
> default PM_WAKEUP_GPIO_BY_SIC_IWR
> --- everything.orig/arch/arm/Kconfig 2007-11-07 14:44:55.651522948 +0100
> +++ everything/arch/arm/Kconfig 2007-11-07 14:45:28.641531465 +0100
> @@ -977,6 +977,9 @@ menu "Power management options"
>
> source "kernel/power/Kconfig"
>
> +config ARCH_SUSPEND_POSSIBLE
> + def_bool y
> +
> endmenu
>
> source "net/Kconfig"
> --- everything.orig/arch/mips/Kconfig 2007-11-07 14:44:55.701522460 +0100
> +++ everything/arch/mips/Kconfig 2007-11-07 14:45:28.641531465 +0100
> @@ -1999,6 +1999,10 @@ endmenu
>
> menu "Power management options"
>
> +config ARCH_SUSPEND_POSSIBLE
> + def_bool y
> + depends on !SMP
> +
> source "kernel/power/Kconfig"
>
> endmenu
> --- everything.orig/arch/sh/Kconfig 2007-11-07 14:44:55.801520344 +0100
> +++ everything/arch/sh/Kconfig 2007-11-07 14:45:28.651528536 +0100
> @@ -748,6 +748,10 @@ endmenu
> menu "Power management options (EXPERIMENTAL)"
> depends on EXPERIMENTAL && SYS_SUPPORTS_PM
>
> +config ARCH_SUSPEND_POSSIBLE
> + def_bool y
> + depends on !SMP
> +
> source kernel/power/Kconfig
>
> endmenu
> --- everything.orig/arch/frv/Kconfig 2007-11-07 14:44:55.861520941 +0100
> +++ everything/arch/frv/Kconfig 2007-11-07 14:45:28.651528536 +0100
> @@ -357,6 +357,11 @@ source "drivers/pcmcia/Kconfig"
> # should probably wait a while.
>
> menu "Power management options"
> +
> +config ARCH_SUSPEND_POSSIBLE
> + def_bool y
> + depends on !SMP
> +
> source kernel/power/Kconfig
> endmenu
>
> --- everything.orig/arch/powerpc/Kconfig 2007-11-07 14:45:28.591544215 +0100
> +++ everything/arch/powerpc/Kconfig 2007-11-07 14:45:28.651528536 +0100
> @@ -155,6 +155,10 @@ config ARCH_HIBERNATION_POSSIBLE
> depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
> default y
>
> +config ARCH_SUSPEND_POSSIBLE
> + def_bool y
> + depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200
> +
> config PPC_DCR_NATIVE
> bool
> default n
>



--
"Premature optimization is the root of all evil." - Donald Knuth
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