diff options
| -rw-r--r-- | arch/s390/include/asm/qdio.h | 1 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio.h | 2 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_main.c | 8 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_setup.c | 1 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 2 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_qdio.c | 2 |
6 files changed, 15 insertions, 1 deletions
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h index 46e96bc1f5a1..350e7ee5952d 100644 --- a/arch/s390/include/asm/qdio.h +++ b/arch/s390/include/asm/qdio.h @@ -361,6 +361,7 @@ struct qdio_initialize { qdio_handler_t *input_handler; qdio_handler_t *output_handler; void (*queue_start_poll) (struct ccw_device *, int, unsigned long); + int scan_threshold; unsigned long int_parm; void **input_sbal_addr_array; void **output_sbal_addr_array; diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index 9b6ea3ca3ece..a77aa9109cfd 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -249,6 +249,8 @@ struct qdio_output_q { int use_enh_siga; /* timer to check for more outbound work */ struct timer_list timer; + /* used SBALs before tasklet schedule */ + int scan_threshold; }; /* diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 6621de94f3ad..4c0109900c74 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -1492,7 +1492,13 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags, qperf_inc(q, fast_requeue); out: - tasklet_schedule(&q->tasklet); + /* in case of SIGA errors we must process the error immediately */ + if (used >= q->u.out.scan_threshold || rc) + tasklet_schedule(&q->tasklet); + else + /* free the SBALs in case of no further traffic */ + if (!timer_pending(&q->u.out.timer)) + mod_timer(&q->u.out.timer, jiffies + HZ); return rc; } diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index a13cf7ec64b2..635f35dc8466 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -178,6 +178,7 @@ static void setup_queues(struct qdio_irq *irq_ptr, setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); q->is_input_q = 0; + q->u.out.scan_threshold = qdio_init->scan_threshold; setup_storage_lists(q, irq_ptr, output_sbal_array, i); output_sbal_array += QDIO_MAX_BUFFERS_PER_Q; diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index e6b2df0e73f5..f65320babf71 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -3831,6 +3831,8 @@ static int qeth_qdio_establish(struct qeth_card *card) init_data.int_parm = (unsigned long) card; init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; + init_data.scan_threshold = + (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32; if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index a0554beb4179..5ae40ef586a8 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -292,6 +292,8 @@ static void zfcp_qdio_setup_init_data(struct qdio_initialize *id, id->int_parm = (unsigned long) qdio; id->input_sbal_addr_array = (void **) (qdio->res_q); id->output_sbal_addr_array = (void **) (qdio->req_q); + id->scan_threshold = + QDIO_MAX_BUFFERS_PER_Q - ZFCP_QDIO_MAX_SBALS_PER_REQ * 2; } /** |