diff options
| -rw-r--r-- | drivers/s390/cio/qdio.c | 92 |
1 files changed, 47 insertions, 45 deletions
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c index ed026a1dc32..03347aed2b3 100644 --- a/drivers/s390/cio/qdio.c +++ b/drivers/s390/cio/qdio.c @@ -81,6 +81,7 @@ static __u32 volatile spare_indicator; static atomic_t spare_indicator_usecount; #define QDIO_MEMPOOL_SCSSC_ELEMENTS 2 static mempool_t *qdio_mempool_scssc; +static struct kmem_cache *qdio_q_cache; static debug_info_t *qdio_dbf_setup; static debug_info_t *qdio_dbf_sbal; @@ -1617,23 +1618,21 @@ static void qdio_release_irq_memory(struct qdio_irq *irq_ptr) { int i; + struct qdio_q *q; - for (i=0;i<QDIO_MAX_QUEUES_PER_IRQ;i++) { - if (!irq_ptr->input_qs[i]) - goto next; - - kfree(irq_ptr->input_qs[i]->slib); - kfree(irq_ptr->input_qs[i]); - -next: - if (!irq_ptr->output_qs[i]) - continue; - - kfree(irq_ptr->output_qs[i]->slib); - kfree(irq_ptr->output_qs[i]); - + for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { + q = irq_ptr->input_qs[i]; + if (q) { + free_page((unsigned long) q->slib); + kmem_cache_free(qdio_q_cache, q); + } + q = irq_ptr->output_qs[i]; + if (q) { + free_page((unsigned long) q->slib); + kmem_cache_free(qdio_q_cache, q); + } } - kfree(irq_ptr->qdr); + free_page((unsigned long) irq_ptr->qdr); free_page((unsigned long) irq_ptr); } @@ -1680,44 +1679,35 @@ qdio_alloc_qs(struct qdio_irq *irq_ptr, { int i; struct qdio_q *q; - int result=-ENOMEM; - - for (i=0;i<no_input_qs;i++) { - q = kzalloc(sizeof(struct qdio_q), GFP_KERNEL); - if (!q) { - QDIO_PRINT_ERR("kmalloc of q failed!\n"); - goto out; - } + for (i = 0; i < no_input_qs; i++) { + q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL); + if (!q) + return -ENOMEM; + memset(q, 0, sizeof(*q)); - q->slib = kmalloc(PAGE_SIZE, GFP_KERNEL); + q->slib = (struct slib *) __get_free_page(GFP_KERNEL); if (!q->slib) { - QDIO_PRINT_ERR("kmalloc of slib failed!\n"); - goto out; + kmem_cache_free(qdio_q_cache, q); + return -ENOMEM; } - irq_ptr->input_qs[i]=q; } - for (i=0;i<no_output_qs;i++) { - q = kzalloc(sizeof(struct qdio_q), GFP_KERNEL); - - if (!q) { - goto out; - } + for (i = 0; i < no_output_qs; i++) { + q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL); + if (!q) + return -ENOMEM; + memset(q, 0, sizeof(*q)); - q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL); + q->slib = (struct slib *) __get_free_page(GFP_KERNEL); if (!q->slib) { - QDIO_PRINT_ERR("kmalloc of slib failed!\n"); - goto out; + kmem_cache_free(qdio_q_cache, q); + return -ENOMEM; } - irq_ptr->output_qs[i]=q; } - - result=0; -out: - return result; + return 0; } static void @@ -2985,17 +2975,17 @@ qdio_allocate(struct qdio_initialize *init_data) QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*)); if (!irq_ptr) { - QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n"); + QDIO_PRINT_ERR("allocation of irq_ptr failed!\n"); return -ENOMEM; } init_MUTEX(&irq_ptr->setting_up_sema); /* QDR must be in DMA area since CCW data address is only 32 bit */ - irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA); + irq_ptr->qdr = (struct qdr *) __get_free_page(GFP_KERNEL | GFP_DMA); if (!(irq_ptr->qdr)) { free_page((unsigned long) irq_ptr); - QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n"); + QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n"); return -ENOMEM; } QDIO_DBF_TEXT0(0,setup,"qdr:"); @@ -3004,6 +2994,7 @@ qdio_allocate(struct qdio_initialize *init_data) if (qdio_alloc_qs(irq_ptr, init_data->no_input_qs, init_data->no_output_qs)) { + QDIO_PRINT_ERR("queue allocation failed!\n"); qdio_release_irq_memory(irq_ptr); return -ENOMEM; } @@ -3895,9 +3886,19 @@ init_QDIO(void) if (res) return res; + qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q), + 256, 0, NULL); + if (!qdio_q_cache) { + qdio_release_qdio_memory(); + return -ENOMEM; + } + res = qdio_register_dbf_views(); - if (res) + if (res) { + kmem_cache_destroy(qdio_q_cache); + qdio_release_qdio_memory(); return res; + } QDIO_DBF_TEXT0(0,setup,"initQDIO"); res = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats); @@ -3929,6 +3930,7 @@ cleanup_QDIO(void) qdio_release_qdio_memory(); qdio_unregister_dbf_views(); mempool_destroy(qdio_mempool_scssc); + kmem_cache_destroy(qdio_q_cache); bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats); printk("qdio: %s: module removed\n",version); } |