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Commit 07e3ec3a authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
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s390/pci: gather statistics for floating vs directed irqs 



Gather statistics to distinguish floating and directed interrupts.

Signed-off-by: default avatarSebastian Ott <sebott@linux.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 914b7dd0

arch/s390/include/asm/irq.h

+2 −1
Original line number Diff line number Diff line
@@ -59,7 +59,8 @@ enum interruption_class { 
	IRQIO_VIR,

	IRQIO_QAI,

	IRQIO_APB,

	IRQIO_PCI,

	IRQIO_PCF,

	IRQIO_PCD,

	IRQIO_MSI,

	IRQIO_VAI,

	IRQIO_GAL,

arch/s390/kernel/irq.c

+2 −1
Original line number Diff line number Diff line
@@ -85,7 +85,8 @@ static const struct irq_class irqclass_sub_desc[] = { 
	{.irq = IRQIO_VIR,  .name = "VIR", .desc = "[I/O] Virtual I/O Devices"},

	{.irq = IRQIO_QAI,  .name = "QAI", .desc = "[AIO] QDIO Adapter Interrupt"},

	{.irq = IRQIO_APB,  .name = "APB", .desc = "[AIO] AP Bus"},

	{.irq = IRQIO_PCI,  .name = "PCI", .desc = "[AIO] PCI Interrupt"},

	{.irq = IRQIO_PCF,  .name = "PCF", .desc = "[AIO] PCI Floating Interrupt"},

	{.irq = IRQIO_PCD,  .name = "PCD", .desc = "[AIO] PCI Directed Interrupt"},

	{.irq = IRQIO_MSI,  .name = "MSI", .desc = "[AIO] MSI Interrupt"},

	{.irq = IRQIO_VAI,  .name = "VAI", .desc = "[AIO] Virtual I/O Devices AI"},

	{.irq = IRQIO_GAL,  .name = "GAL", .desc = "[AIO] GIB Alert"},

arch/s390/pci/pci_irq.c

+6 −4
Original line number Diff line number Diff line
@@ -188,12 +188,14 @@ static void zpci_handle_fallback_irq(void) 


static void zpci_directed_irq_handler(struct airq_struct *airq, bool floating)

{

	inc_irq_stat(IRQIO_PCI);

	if (floating)

	if (floating) {

		inc_irq_stat(IRQIO_PCF);

		zpci_handle_fallback_irq();

	else

	} else {

		inc_irq_stat(IRQIO_PCD);

		zpci_handle_cpu_local_irq(true);

	}

}



static void zpci_floating_irq_handler(struct airq_struct *airq, bool floating)

{
@@ -201,7 +203,7 @@ static void zpci_floating_irq_handler(struct airq_struct *airq, bool floating) 
	struct airq_iv *aibv;

	int irqs_on = 0;



	inc_irq_stat(IRQIO_PCI);

	inc_irq_stat(IRQIO_PCF);

	for (si = 0;;) {

		/* Scan adapter summary indicator bit vector */

		si = airq_iv_scan(zpci_sbv, si, airq_iv_end(zpci_sbv));