| Message ID | 1381748590-14279-13-git-send-email-lorenzo.pieralisi@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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 <lorenzo.pieralisi@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> > --- > 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 >
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
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 <lorenzo.pieralisi@arm.com> --- arch/arm64/kernel/process.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)