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[PATCH] x86-64/i386: Use common X86_PM_TIMER option and make it EMBEDDED

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This makes x86-64 use the common X86_PM_TIMER Kconfig entry in drivers/acpi

And since PM timer is needed for correct timing on a lot of systems
now (e.g. AMD dual cores) and we often get bug reports from people
who forgot to set it make it depend on CONFIG_EMBEDDED. x86-64 had
this change before and it's a good thing.

I also fixed the description slightly to make this more clear.

Cc: len.brown@intel.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2006-02-26 04:18:37 +01:00 committed by Linus Torvalds
parent 6070f9ec6b
commit e78256b8f3
2 changed files with 3 additions and 20 deletions
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15
arch/x86_64/Kconfig
View File

@ -354,21 +354,6 @@ config HPET_TIMER
as it is off-chip. You can find the HPET spec at as it is off-chip. You can find the HPET spec at
<http://www.intel.com/hardwaredesign/hpetspec.htm>. <http://www.intel.com/hardwaredesign/hpetspec.htm>.
config X86_PM_TIMER
bool "PM timer" if EMBEDDED
depends on ACPI
default y
help
Support the ACPI PM timer for time keeping. This is slow,
but is useful on some chipsets without HPET on systems with more
than one CPU. On a single processor or single socket multi core
system it is normally not required.
When the PM timer is active 64bit vsyscalls are disabled
and should not be enabled (/proc/sys/kernel/vsyscall64 should
not be changed).
The kernel selects the PM timer only as a last resort, so it is
useful to enable just in case.
config HPET_EMULATE_RTC config HPET_EMULATE_RTC
bool "Provide RTC interrupt" bool "Provide RTC interrupt"
depends on HPET_TIMER && RTC=y depends on HPET_TIMER && RTC=y

8
drivers/acpi/Kconfig
View File

@ -285,9 +285,8 @@ config ACPI_SYSTEM
dump your ACPI DSDT table using /proc/acpi/dsdt. dump your ACPI DSDT table using /proc/acpi/dsdt.
config X86_PM_TIMER config X86_PM_TIMER
bool "Power Management Timer Support" bool "Power Management Timer Support" if EMBEDDED
depends on X86 depends on X86
depends on !X86_64
default y default y
help help
The Power Management Timer is available on all ACPI-capable, The Power Management Timer is available on all ACPI-capable,
@ -298,9 +297,8 @@ config X86_PM_TIMER
voltage scaling, unlike the commonly used Time Stamp Counter voltage scaling, unlike the commonly used Time Stamp Counter
(TSC) timing source. (TSC) timing source.
So, if you see messages like 'Losing too many ticks!' in the You should nearly always say Y here because many modern
kernel logs, and/or you are using this on a notebook which systems require this timer.
does not yet have an HPET, you should say "Y" here.
config ACPI_CONTAINER config ACPI_CONTAINER
tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)" tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"