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Groups > linux.kernel > #1399363
| From | Sudeep Holla <sudeep.holla@arm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE |
| Date | 2016-05-11 19:00 +0200 |
| Message-ID | <rxFEm-3D1-19@gated-at.bofh.it> (permalink) |
| References | <rxEoV-2BM-5@gated-at.bofh.it> <rxEoW-2BM-33@gated-at.bofh.it> <rxFbk-3pC-7@gated-at.bofh.it> |
| Organization | ARM |
On 11/05/16 17:23, Rafael J. Wysocki wrote: > On Wed, May 11, 2016 at 5:37 PM, Sudeep Holla <sudeep.holla@arm.com> 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@kernel.org >> Cc: linux-ia64@vger.kernel.org >> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> >> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> >> --- >> 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 ACPI > > You 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
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[PATCH v5 0/5] ACPI / processor_idle: Add ACPI v6.0 LPI support Sudeep Holla <sudeep.holla@arm.com> - 2016-05-11 17:40 +0200
[PATCH v5 5/5] ACPI : enable ACPI_PROCESSOR_IDLE on ARM64 Sudeep Holla <sudeep.holla@arm.com> - 2016-05-11 17:40 +0200
[PATCH v5 3/5] arm64: cpuidle: drop __init section marker to arm_cpuidle_init Sudeep Holla <sudeep.holla@arm.com> - 2016-05-11 17:40 +0200
[PATCH v5 2/5] ACPI / processor_idle: Add support for Low Power Idle(LPI) states Sudeep Holla <sudeep.holla@arm.com> - 2016-05-11 17:40 +0200
[PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE Sudeep Holla <sudeep.holla@arm.com> - 2016-05-11 17:40 +0200
Re: [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE "Rafael J. Wysocki" <rafael@kernel.org> - 2016-05-11 18:30 +0200
Re: [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE Sudeep Holla <sudeep.holla@arm.com> - 2016-05-11 19:00 +0200
Re: [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE Len Brown <lenb@kernel.org> - 2016-05-11 20:30 +0200
Re: [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE Sudeep Holla <sudeep.holla@arm.com> - 2016-05-12 11:20 +0200
[PATCH v5 4/5] arm64: add support for ACPI Low Power Idle(LPI) Sudeep Holla <sudeep.holla@arm.com> - 2016-05-11 17:40 +0200
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