From 2e73c2cf78f797f3ff299ca39b210bceb40ab804 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Tue, 28 Aug 2012 16:48:47 +0200 Subject: [PATCH] s390/eadm_sch: add support for irq statistics Add support for EADM interrupt statistics in /proc/interrupts. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/irq.h | 1 + arch/s390/kernel/irq.c | 1 + drivers/s390/cio/eadm_sch.c | 3 +++ 3 files changed, 5 insertions(+) diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h index 2b9d41899d21..33cc59071581 100644 --- a/arch/s390/include/asm/irq.h +++ b/arch/s390/include/asm/irq.h @@ -30,6 +30,7 @@ enum interruption_class { IOINT_CLW, IOINT_CTC, IOINT_APB, + IOINT_ADM, IOINT_CSC, NMI_NMI, NR_IRQS, diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index dd7630d8aab7..a22fdca6a663 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -55,6 +55,7 @@ static const struct irq_class intrclass_names[] = { {.name = "CLW", .desc = "[I/O] CLAW" }, {.name = "CTC", .desc = "[I/O] CTC" }, {.name = "APB", .desc = "[I/O] AP Bus" }, + {.name = "ADM", .desc = "[I/O] EADM Subchannel" }, {.name = "CSC", .desc = "[I/O] CHSC Subchannel" }, {.name = "NMI", .desc = "[NMI] Machine Check" }, }; diff --git a/drivers/s390/cio/eadm_sch.c b/drivers/s390/cio/eadm_sch.c index 3fc882f66689..6c9673400464 100644 --- a/drivers/s390/cio/eadm_sch.c +++ b/drivers/s390/cio/eadm_sch.c @@ -5,6 +5,7 @@ * Author(s): Sebastian Ott */ +#include #include #include #include @@ -138,6 +139,8 @@ static void eadm_subchannel_irq(struct subchannel *sch) EADM_LOG(6, "irq"); EADM_LOG_HEX(6, irb, sizeof(*irb)); + kstat_cpu(smp_processor_id()).irqs[IOINT_ADM]++; + if ((scsw->stctl & (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) && scsw->eswf == 1 && irb->esw.eadm.erw.r) error = -EIO;