diff options
| -rw-r--r-- | arch/s390/include/asm/qdio.h | 3 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio.h | 9 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_setup.c | 10 |
3 files changed, 14 insertions, 8 deletions
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h index 79d849f014f0..c666bfe5e984 100644 --- a/arch/s390/include/asm/qdio.h +++ b/arch/s390/include/asm/qdio.h @@ -13,7 +13,8 @@ #include <asm/cio.h> #include <asm/ccwdev.h> -#define QDIO_MAX_QUEUES_PER_IRQ 32 +/* only use 4 queues to save some cachelines */ +#define QDIO_MAX_QUEUES_PER_IRQ 4 #define QDIO_MAX_BUFFERS_PER_Q 128 #define QDIO_MAX_BUFFERS_MASK (QDIO_MAX_BUFFERS_PER_Q - 1) #define QDIO_MAX_ELEMENTS_PER_BUFFER 16 diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index 9a5283e16e38..48aa0647432b 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -208,7 +208,7 @@ struct qdio_dev_perf_stat { unsigned int eqbs_partial; unsigned int sqbs; unsigned int sqbs_partial; -}; +} ____cacheline_aligned; struct qdio_queue_perf_stat { /* @@ -329,12 +329,8 @@ struct qdio_irq { struct qdio_ssqd_desc ssqd_desc; void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *); - struct qdio_dev_perf_stat perf_stat; int perf_stat_enabled; - /* - * Warning: Leave these members together at the end so they won't be - * cleared in qdio_setup_irq. - */ + struct qdr *qdr; unsigned long chsc_page; @@ -343,6 +339,7 @@ struct qdio_irq { debug_info_t *debug_area; struct mutex setup_mutex; + struct qdio_dev_perf_stat perf_stat; }; /* helper functions */ diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index 4464907715a4..7f4a75465140 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -382,7 +382,15 @@ int qdio_setup_irq(struct qdio_initialize *init_data) struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data; int rc; - memset(irq_ptr, 0, ((char *)&irq_ptr->qdr) - ((char *)irq_ptr)); + memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib)); + memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag)); + memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw)); + memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc)); + memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); + + irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL; + irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0; + /* wipes qib.ac, required by ar7063 */ memset(irq_ptr->qdr, 0, sizeof(struct qdr)); |