diff options
| -rw-r--r-- | drivers/infiniband/hw/hfi1/chip.c | 16 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/debugfs.c | 8 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/driver.c | 10 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/hfi.h | 5 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/init.c | 52 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.c | 8 |
6 files changed, 31 insertions, 68 deletions
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index 612f04190ed8..6150567c0b51 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -14654,8 +14654,8 @@ void hfi1_start_cleanup(struct hfi1_devdata *dd) */ static int init_asic_data(struct hfi1_devdata *dd) { - unsigned long flags; - struct hfi1_devdata *tmp, *peer = NULL; + unsigned long index; + struct hfi1_devdata *peer; struct hfi1_asic_data *asic_data; int ret = 0; @@ -14664,14 +14664,12 @@ static int init_asic_data(struct hfi1_devdata *dd) if (!asic_data) return -ENOMEM; - spin_lock_irqsave(&hfi1_devs_lock, flags); + xa_lock_irq(&hfi1_dev_table); /* Find our peer device */ - list_for_each_entry(tmp, &hfi1_dev_list, list) { - if ((HFI_BASE_GUID(dd) == HFI_BASE_GUID(tmp)) && - dd->unit != tmp->unit) { - peer = tmp; + xa_for_each(&hfi1_dev_table, index, peer) { + if ((HFI_BASE_GUID(dd) == HFI_BASE_GUID(peer)) && + dd->unit != peer->unit) break; - } } if (peer) { @@ -14683,7 +14681,7 @@ static int init_asic_data(struct hfi1_devdata *dd) mutex_init(&dd->asic_data->asic_resource_mutex); } dd->asic_data->dds[dd->hfi1_id] = dd; /* self back-pointer */ - spin_unlock_irqrestore(&hfi1_devs_lock, flags); + xa_unlock_irq(&hfi1_dev_table); /* first one through - set up i2c devices */ if (!peer) diff --git a/drivers/infiniband/hw/hfi1/debugfs.c b/drivers/infiniband/hw/hfi1/debugfs.c index 427ba0ce74a5..057bb82c664f 100644 --- a/drivers/infiniband/hw/hfi1/debugfs.c +++ b/drivers/infiniband/hw/hfi1/debugfs.c @@ -1302,15 +1302,15 @@ static void _driver_stats_seq_stop(struct seq_file *s, void *v) static u64 hfi1_sps_ints(void) { - unsigned long flags; + unsigned long index, flags; struct hfi1_devdata *dd; u64 sps_ints = 0; - spin_lock_irqsave(&hfi1_devs_lock, flags); - list_for_each_entry(dd, &hfi1_dev_list, list) { + xa_lock_irqsave(&hfi1_dev_table, flags); + xa_for_each(&hfi1_dev_table, index, dd) { sps_ints += get_all_cpu_total(dd->int_counter); } - spin_unlock_irqrestore(&hfi1_devs_lock, flags); + xa_unlock_irqrestore(&hfi1_dev_table, flags); return sps_ints; } diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c index 2a9d2912f5db..867b4e10018f 100644 --- a/drivers/infiniband/hw/hfi1/driver.c +++ b/drivers/infiniband/hw/hfi1/driver.c @@ -72,8 +72,6 @@ */ const char ib_hfi1_version[] = HFI1_DRIVER_VERSION "\n"; -DEFINE_SPINLOCK(hfi1_devs_lock); -LIST_HEAD(hfi1_dev_list); DEFINE_MUTEX(hfi1_mutex); /* general driver use */ unsigned int hfi1_max_mtu = HFI1_DEFAULT_MAX_MTU; @@ -175,11 +173,11 @@ int hfi1_count_active_units(void) { struct hfi1_devdata *dd; struct hfi1_pportdata *ppd; - unsigned long flags; + unsigned long index, flags; int pidx, nunits_active = 0; - spin_lock_irqsave(&hfi1_devs_lock, flags); - list_for_each_entry(dd, &hfi1_dev_list, list) { + xa_lock_irqsave(&hfi1_dev_table, flags); + xa_for_each(&hfi1_dev_table, index, dd) { if (!(dd->flags & HFI1_PRESENT) || !dd->kregbase1) continue; for (pidx = 0; pidx < dd->num_pports; ++pidx) { @@ -190,7 +188,7 @@ int hfi1_count_active_units(void) } } } - spin_unlock_irqrestore(&hfi1_devs_lock, flags); + xa_unlock_irqrestore(&hfi1_dev_table, flags); return nunits_active; } diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index aafd8c377dd3..b458c218842b 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -64,6 +64,7 @@ #include <linux/kthread.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> +#include <linux/xarray.h> #include <rdma/ib_hdrs.h> #include <rdma/opa_addr.h> #include <linux/rhashtable.h> @@ -1040,7 +1041,6 @@ struct sdma_vl_map; typedef int (*send_routine)(struct rvt_qp *, struct hfi1_pkt_state *, u64); struct hfi1_devdata { struct hfi1_ibdev verbs_dev; /* must be first */ - struct list_head list; /* pointers to related structs for this device */ /* pci access data structure */ struct pci_dev *pcidev; @@ -1425,8 +1425,7 @@ struct hfi1_filedata { struct mm_struct *mm; }; -extern struct list_head hfi1_dev_list; -extern spinlock_t hfi1_devs_lock; +extern struct xarray hfi1_dev_table; struct hfi1_devdata *hfi1_lookup(int unit); static inline unsigned long uctxt_offset(struct hfi1_ctxtdata *uctxt) diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c index 3c339617aa95..e4c2ae4f1cb3 100644 --- a/drivers/infiniband/hw/hfi1/init.c +++ b/drivers/infiniband/hw/hfi1/init.c @@ -49,7 +49,7 @@ #include <linux/netdevice.h> #include <linux/vmalloc.h> #include <linux/delay.h> -#include <linux/idr.h> +#include <linux/xarray.h> #include <linux/module.h> #include <linux/printk.h> #include <linux/hrtimer.h> @@ -124,7 +124,7 @@ MODULE_PARM_DESC(user_credit_return_threshold, "Credit return threshold for user static inline u64 encode_rcv_header_entry_size(u16 size); -static struct idr hfi1_unit_table; +DEFINE_XARRAY_FLAGS(hfi1_dev_table, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ); static int hfi1_create_kctxt(struct hfi1_devdata *dd, struct hfi1_pportdata *ppd) @@ -1018,21 +1018,9 @@ done: return ret; } -static inline struct hfi1_devdata *__hfi1_lookup(int unit) -{ - return idr_find(&hfi1_unit_table, unit); -} - struct hfi1_devdata *hfi1_lookup(int unit) { - struct hfi1_devdata *dd; - unsigned long flags; - - spin_lock_irqsave(&hfi1_devs_lock, flags); - dd = __hfi1_lookup(unit); - spin_unlock_irqrestore(&hfi1_devs_lock, flags); - - return dd; + return xa_load(&hfi1_dev_table, unit); } /* @@ -1200,7 +1188,7 @@ void hfi1_free_ctxtdata(struct hfi1_devdata *dd, struct hfi1_ctxtdata *rcd) /* * Release our hold on the shared asic data. If we are the last one, * return the structure to be finalized outside the lock. Must be - * holding hfi1_devs_lock. + * holding hfi1_dev_table lock. */ static struct hfi1_asic_data *release_asic_data(struct hfi1_devdata *dd) { @@ -1236,13 +1224,10 @@ static void hfi1_clean_devdata(struct hfi1_devdata *dd) struct hfi1_asic_data *ad; unsigned long flags; - spin_lock_irqsave(&hfi1_devs_lock, flags); - if (!list_empty(&dd->list)) { - idr_remove(&hfi1_unit_table, dd->unit); - list_del_init(&dd->list); - } + xa_lock_irqsave(&hfi1_dev_table, flags); + __xa_erase(&hfi1_dev_table, dd->unit); ad = release_asic_data(dd); - spin_unlock_irqrestore(&hfi1_devs_lock, flags); + xa_unlock_irqrestore(&hfi1_dev_table, flags); finalize_asic_data(dd, ad); free_platform_config(dd); @@ -1286,13 +1271,10 @@ void hfi1_free_devdata(struct hfi1_devdata *dd) * Must be done via verbs allocator, because the verbs cleanup process * both does cleanup and free of the data structure. * "extra" is for chip-specific data. - * - * Use the idr mechanism to get a unit number for this unit. */ static struct hfi1_devdata *hfi1_alloc_devdata(struct pci_dev *pdev, size_t extra) { - unsigned long flags; struct hfi1_devdata *dd; int ret, nports; @@ -1307,21 +1289,10 @@ static struct hfi1_devdata *hfi1_alloc_devdata(struct pci_dev *pdev, dd->pport = (struct hfi1_pportdata *)(dd + 1); dd->pcidev = pdev; pci_set_drvdata(pdev, dd); - - INIT_LIST_HEAD(&dd->list); - idr_preload(GFP_KERNEL); - spin_lock_irqsave(&hfi1_devs_lock, flags); - - ret = idr_alloc(&hfi1_unit_table, dd, 0, 0, GFP_NOWAIT); - if (ret >= 0) { - dd->unit = ret; - list_add(&dd->list, &hfi1_dev_list); - } dd->node = NUMA_NO_NODE; - spin_unlock_irqrestore(&hfi1_devs_lock, flags); - idr_preload_end(); - + ret = xa_alloc_irq(&hfi1_dev_table, &dd->unit, dd, xa_limit_32b, + GFP_KERNEL); if (ret < 0) { dev_err(&pdev->dev, "Could not allocate unit ID: error %d\n", -ret); @@ -1522,8 +1493,6 @@ static int __init hfi1_mod_init(void) * These must be called before the driver is registered with * the PCI subsystem. */ - idr_init(&hfi1_unit_table); - hfi1_dbg_init(); ret = pci_register_driver(&hfi1_pci_driver); if (ret < 0) { @@ -1534,7 +1503,6 @@ static int __init hfi1_mod_init(void) bail_dev: hfi1_dbg_exit(); - idr_destroy(&hfi1_unit_table); dev_cleanup(); bail: return ret; @@ -1552,7 +1520,7 @@ static void __exit hfi1_mod_cleanup(void) node_affinity_destroy_all(); hfi1_dbg_exit(); - idr_destroy(&hfi1_unit_table); + WARN_ON(!xa_empty(&hfi1_dev_table)); dispose_firmware(); /* asymmetric with obtain_firmware() */ dev_cleanup(); } diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c index b73ab7c64d91..1eb4105b2d22 100644 --- a/drivers/infiniband/hw/hfi1/verbs.c +++ b/drivers/infiniband/hw/hfi1/verbs.c @@ -1740,15 +1740,15 @@ static struct rdma_hw_stats *alloc_hw_stats(struct ib_device *ibdev, static u64 hfi1_sps_ints(void) { - unsigned long flags; + unsigned long index, flags; struct hfi1_devdata *dd; u64 sps_ints = 0; - spin_lock_irqsave(&hfi1_devs_lock, flags); - list_for_each_entry(dd, &hfi1_dev_list, list) { + xa_lock_irqsave(&hfi1_dev_table, flags); + xa_for_each(&hfi1_dev_table, index, dd) { sps_ints += get_all_cpu_total(dd->int_counter); } - spin_unlock_irqrestore(&hfi1_devs_lock, flags); + xa_unlock_irqrestore(&hfi1_dev_table, flags); return sps_ints; } |