[PATCH v2 12/13] arm64: kernel: add CPU idle call
From: Daniel Lezcano <hidden>
Date: 2013-10-17 09:20:46
Also in:
linux-pm
On 10/14/2013 01:03 PM, Lorenzo Pieralisi wrote:
When CPU idle is enabled, the architectural idle call should go through the idle subsystem to allow CPUs to enter idle states defined by the platform CPU idle back-end operations. This patch, mirroring other archs behaviour, adds the CPU idle call to the architectural arch_cpu_idle implementation for arm64. Signed-off-by: Lorenzo Pieralisi <redacted>
Acked-by: Daniel Lezcano <redacted>
quoted hunk ↗ jump to hunk
--- arch/arm64/kernel/process.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index de17c89..50491ec 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c@@ -33,6 +33,7 @@ #include <linux/kallsyms.h> #include <linux/init.h> #include <linux/cpu.h> +#include <linux/cpuidle.h> #include <linux/elfcore.h> #include <linux/pm.h> #include <linux/tick.h>@@ -98,8 +99,10 @@ void arch_cpu_idle(void) * This should do all the clock switching and wait for interrupt * tricks */ - cpu_do_idle(); - local_irq_enable(); + if (cpuidle_idle_call()) { + cpu_do_idle(); + local_irq_enable(); + } } #ifdef CONFIG_HOTPLUG_CPU
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