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Commit 88bea188 authored by Len Brown's avatar Len Brown
Browse files

ACPI: add /sys/firmware/acpi/interrupts/sci_not counter 



This counter may prove useful in debugging some
spurious interrupt issues seen in the field.

Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent a939b96c

Documentation/ABI/testing/sysfs-firmware-acpi

+6 −2
Original line number Diff line number Diff line
@@ -69,9 +69,13 @@ Description: 
		gpe1F:	     0	invalid

		gpe_all:    1192

		sci:	1194

		sci_not:     0	



		sci - The total number of times the ACPI SCI

		has claimed an interrupt.

		sci - The number of times the ACPI SCI

		has been called and claimed an interrupt.



		sci_not - The number of times the ACPI SCI

		has been called and NOT claimed an interrupt.



		gpe_all - count of SCI caused by GPEs.

drivers/acpi/osl.c

+3 −1
Original line number Diff line number Diff line
@@ -353,9 +353,11 @@ static irqreturn_t acpi_irq(int irq, void *dev_id) 
	if (handled) {

		acpi_irq_handled++;

		return IRQ_HANDLED;

	} else

	} else {

		acpi_irq_not_handled++;

		return IRQ_NONE;

	}

}



acpi_status

acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler,

drivers/acpi/system.c

+9 −2
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ ACPI_MODULE_NAME("system"); 
#define ACPI_SYSTEM_DEVICE_NAME		"System"



u32 acpi_irq_handled;

u32 acpi_irq_not_handled;



/*

 * Make ACPICA version work as module param
@@ -214,8 +215,9 @@ static int acpi_system_sysfs_init(void) 


#define COUNT_GPE 0

#define COUNT_SCI 1	/* acpi_irq_handled */

#define COUNT_ERROR 2	/* other */

#define NUM_COUNTERS_EXTRA 3

#define COUNT_SCI_NOT 2	/* acpi_irq_not_handled */

#define COUNT_ERROR 3	/* other */

#define NUM_COUNTERS_EXTRA 4



struct event_counter {

	u32 count;
@@ -317,6 +319,8 @@ static ssize_t counter_show(struct kobject *kobj, 


	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =

		acpi_irq_handled;

	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =

		acpi_irq_not_handled;

	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =

		acpi_gpe_count;
@@ -363,6 +367,7 @@ static ssize_t counter_set(struct kobject *kobj, 
			all_counters[i].count = 0;

		acpi_gpe_count = 0;

		acpi_irq_handled = 0;

		acpi_irq_not_handled = 0;

		goto end;

	}
@@ -456,6 +461,8 @@ void acpi_irq_stats_init(void) 
			sprintf(buffer, "gpe_all");

		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)

			sprintf(buffer, "sci");

		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)

			sprintf(buffer, "sci_not");

		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)

			sprintf(buffer, "error");

		else

include/linux/acpi.h

+1 −0
Original line number Diff line number Diff line
@@ -111,6 +111,7 @@ int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base); 
int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);

void acpi_irq_stats_init(void);

extern u32 acpi_irq_handled;

extern u32 acpi_irq_not_handled;



extern struct acpi_mcfg_allocation *pci_mmcfg_config;

extern int pci_mmcfg_config_num;