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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: Len Brown <len.brown@intel.com>
hifive-unleashed-5.1
Len Brown 2009-04-21 00:35:47 -04:00
parent a939b96ccc
commit 88bea188b8
4 changed files with 19 additions and 5 deletions
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8
Documentation/ABI/testing/sysfs-firmware-acpi
View File

@ -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.

4
drivers/acpi/osl.c
View File

@ -353,8 +353,10 @@ 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

11
drivers/acpi/system.c
View File

@ -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 @@ err:
#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

1
include/linux/acpi.h
View File

@ -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;