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authorSudeep Holla <Sudeep.Holla@arm.com>2016-07-19 18:52:53 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-07-21 23:24:35 +0200
commit35ae713355868aa493edbfbabf615473473215cc (patch)
tree3ee0ef3e3d20c76cfb774d9e39d11b55aca1e4cb /include/acpi
parent92d21ac74a9e3c09b0b01c764e530657e4c85c49 (diff)
downloadlinux-35ae713355868aa493edbfbabf615473473215cc.tar.bz2
ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE
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. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/processor.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 6f1805dd5d3c..48779d678122 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -242,7 +242,7 @@ extern int acpi_processor_get_performance_info(struct acpi_processor *pr);
DECLARE_PER_CPU(struct acpi_processor *, processors);
extern struct acpi_processor_errata errata;
-#ifdef ARCH_HAS_POWER_INIT
+#if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE)
void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
unsigned int cpu);
int acpi_processor_ffh_cstate_probe(unsigned int cpu,