From: Len Brown <len.brown@xxxxxxxxx>
This counter may prove useful in debugging some
spurious interrupt issues seen in the field.
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
Documentation/ABI/testing/sysfs-firmware-acpi | 8 ++++++--
drivers/acpi/osl.c | 4 +++-
drivers/acpi/system.c | 11 +++++++++--
include/linux/acpi.h | 1 +
4 files changed, 19 insertions(+), 5 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi
index e8ffc70..4f9ba3c 100644
--- a/Documentation/ABI/testing/sysfs-firmware-acpi
+++ b/Documentation/ABI/testing/sysfs-firmware-acpi
@@ -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.
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index d59f08e..d916bea 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -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
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index da51f05..0944dae 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -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
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 6586cbd..88be890 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -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;
--
1.6.3.rc1.18.g66996
--
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