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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2011-01-05 12:47:33 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:25 +0100 |
| commit | b86651721f18f40319efe94ed3eac2d26682e5b9 (patch) | |
| tree | 308e27b19654f900e8e3a62211d79d7a7711ac82 | |
| parent | 3fe22f6bfd6f81aafd140d69578d3a2c39674664 (diff) | |
| download | kernel_samsung_smdk4412-b86651721f18f40319efe94ed3eac2d26682e5b9.zip kernel_samsung_smdk4412-b86651721f18f40319efe94ed3eac2d26682e5b9.tar.gz kernel_samsung_smdk4412-b86651721f18f40319efe94ed3eac2d26682e5b9.tar.bz2 | |
[S390] tape: add support for irq statistics
Add support for ccw based tape I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/include/asm/irq.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/irq.c | 1 | ||||
| -rw-r--r-- | drivers/s390/char/tape_core.c | 2 |
3 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h index 65e63c0..6986343 100644 --- a/arch/s390/include/asm/irq.h +++ b/arch/s390/include/asm/irq.h @@ -20,6 +20,7 @@ enum interruption_class { IOINT_DAS, IOINT_C15, IOINT_C70, + IOINT_TAP, NMI_NMI, NR_IRQS, }; diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index 8c24141..5d7b6fb 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -37,6 +37,7 @@ static const struct irq_class intrclass_names[] = { {.name = "DAS", .desc = "[I/O] DASD" }, {.name = "C15", .desc = "[I/O] 3215" }, {.name = "C70", .desc = "[I/O] 3270" }, + {.name = "TAP", .desc = "[I/O] Tape" }, {.name = "NMI", .desc = "[NMI] Machine Check" }, }; diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c index b3a3e8e..7978a0a 100644 --- a/drivers/s390/char/tape_core.c +++ b/drivers/s390/char/tape_core.c @@ -14,6 +14,7 @@ #define KMSG_COMPONENT "tape" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt +#include <linux/kernel_stat.h> #include <linux/module.h> #include <linux/init.h> // for kernel parameters #include <linux/kmod.h> // for requesting modules @@ -1114,6 +1115,7 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) struct tape_request *request; int rc; + kstat_cpu(smp_processor_id()).irqs[IOINT_TAP]++; device = dev_get_drvdata(&cdev->dev); if (device == NULL) { return; |