On 11/05/16 17:23, Rafael J. Wysocki wrote:
On Wed, May 11, 2016 at 5:37 PM, Sudeep Holla <sudeep.holla@xxxxxxx> wrote:ACPI 6.0 adds a new method to specify the CPU idle states(C-states) called Low Power Idle(LPI) states. Since new architectures like ARM64 use only LPIs, introduce ACPI_PROCESSOR_CSTATE to encapsulate all the code supporting the old style C-states(_CST). This patch will help to extend the processor_idle module to support LPI. Cc: x86@xxxxxxxxxx Cc: linux-ia64@xxxxxxxxxxxxxxx Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx> Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx> --- arch/ia64/Kconfig | 1 + arch/x86/Kconfig | 1 + drivers/acpi/Kconfig | 4 +++ drivers/acpi/processor_idle.c | 80 ++++++++++++++++++++++++++++--------------- include/acpi/processor.h | 2 +- 5 files changed, 60 insertions(+), 28 deletions(-) diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index b534ebab36ea..e820670d7243 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -15,6 +15,7 @@ config IA64 select ARCH_MIGHT_HAVE_PC_SERIO select PCI if (!IA64_HP_SIM) select ACPI if (!IA64_HP_SIM) + select ACPI_PROCESSOR_CSTATE if ACPIYou don't need this ->select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI select HAVE_UNSTABLE_SCHED_CLOCK diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 2dc18605831f..cb3e14757c9c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -18,6 +18,7 @@ config X86_64 config X86 def_bool y select ACPI_LEGACY_TABLES_LOOKUP if ACPI + select ACPI_PROCESSOR_CSTATE if ACPI select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI select ANON_INODES select ARCH_CLOCKSOURCE_DATA diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index b7e2e776397d..093bfcc4f9c3 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -213,6 +213,10 @@ config ACPI_CPU_FREQ_PSS bool select THERMAL +config ACPI_PROCESSOR_CSTATE + bool-> if you do "def_bool y" here.
I agree and I did exactly the same, but then was not sure on your preference. So dropped it :) -- Regards, Sudeep -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
