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Commit f0cfd2d0 authored by Maulik Shah's avatar Maulik Shah
Browse files

sched: idle: Add support to print wake irqs during s2idle 



syscore ops prints wake irq during "deep" suspend exit however
syscore ops do not execute for "s2idle" suspend.

Add changes to print wakeup irq during "s2idle" mode exit.

The change prints wakeup irq from the first cpu waking up from s2idle
during which local irqs on the cpu is disabled.

Change-Id: Idd05d42f30b97cc5f9d62627339e21731f131673
Signed-off-by: default avatarMaulik Shah <mkshah@codeaurora.org>
parent c30dc7b7

drivers/irqchip/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ config ARM_GIC_V3 
	select IRQ_DOMAIN_HIERARCHY

	select PARTITION_PERCPU

	select GENERIC_IRQ_EFFECTIVE_AFF_MASK

	select QGKI_SHOW_S2IDLE_WAKE_IRQ if QGKI



config ARM_GIC_V3_ITS

	bool
@@ -516,4 +517,11 @@ config SIFIVE_PLIC 


	   If you don't know what to do here, say Y.



config QGKI_SHOW_S2IDLE_WAKE_IRQ

	bool "Qualcomm Technologies, Inc. (QTI) SHOW S2IDLE WAKE IRQ"

	depends on ARM_GIC_V3

	help

	   When this option is selected, first cpu waking up from s2idle

	   prints the interrupts pending and enabled at GIC.



endmenu

drivers/irqchip/irq-gic-v3.c

+8 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/percpu.h>

#include <linux/refcount.h>

#include <linux/slab.h>

#include <linux/suspend.h>

#include <linux/msm_rtb.h>

#include <linux/wakeup_reason.h>
@@ -1244,6 +1245,13 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, 
#define gic_smp_init()		do { } while(0)

#endif



#ifdef CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ

void gic_s2idle_wake(void)

{

	gic_resume_one(&gic_data);

}

#endif /* CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ */



#ifdef CONFIG_CPU_PM

static int gic_cpu_pm_notifier(struct notifier_block *self,

			       unsigned long cmd, void *v)

include/linux/irqchip/arm-gic-v3.h

+4 −0
Original line number Diff line number Diff line
@@ -638,6 +638,10 @@ static inline bool gic_enable_sre(void) 
	return !!(val & ICC_SRE_EL1_SRE);

}



#ifdef CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ

void gic_s2idle_wake(void);

#endif /* CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ */



#endif



#endif

kernel/sched/idle.c

+25 −0
Original line number Diff line number Diff line
@@ -8,6 +8,9 @@ 
 */

#include "sched.h"



#ifdef CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ

#include <linux/irqchip/arm-gic-v3.h>

#endif /* CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ */

#include <trace/events/power.h>



/* Linker adds these: start and end of __cpuidle functions */
@@ -128,6 +131,11 @@ static int call_cpuidle(struct cpuidle_driver *drv, struct cpuidle_device *dev, 
 * set, and it returns with polling set.  If it ever stops polling, it

 * must clear the polling bit.

 */



#ifdef CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ

static cpumask_t cpu_state;

#endif /* CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ */



static void cpuidle_idle_call(void)

{

	struct cpuidle_device *dev = cpuidle_get_device();
@@ -169,9 +177,26 @@ static void cpuidle_idle_call(void) 


	if (idle_should_enter_s2idle() || dev->use_deepest_state) {

		if (idle_should_enter_s2idle()) {



#ifdef CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ

			bool print_wake_irq;



			cpumask_set_cpu(dev->cpu, &cpu_state);

#endif /* CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ */



			rcu_idle_enter();



			entered_state = cpuidle_enter_s2idle(drv, dev);



#ifdef CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ

			print_wake_irq = cpumask_weight(&cpu_state) ==

				    cpumask_weight(cpu_online_mask) ?

				    true : false;

			cpumask_clear_cpu(dev->cpu, &cpu_state);

			if (print_wake_irq)

				gic_s2idle_wake();

#endif /* CONFIG_QGKI_SHOW_S2IDLE_WAKE_IRQ */



			if (entered_state > 0) {

				local_irq_enable();

				goto exit_idle;