diff options
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib.h | 4 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_driver.c | 20 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_fs.c | 12 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_iba7322.c | 4 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_init.c | 56 |
5 files changed, 27 insertions, 69 deletions
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h index 83d2349188db..432d6d0fd7f4 100644 --- a/drivers/infiniband/hw/qib/qib.h +++ b/drivers/infiniband/hw/qib/qib.h @@ -52,6 +52,7 @@ #include <linux/kref.h> #include <linux/sched.h> #include <linux/kthread.h> +#include <linux/xarray.h> #include <rdma/ib_hdrs.h> #include <rdma/rdma_vt.h> @@ -1105,8 +1106,7 @@ struct qib_filedata { int rec_cpu_num; /* for cpu affinity; -1 if none */ }; -extern struct list_head qib_dev_list; -extern spinlock_t qib_devs_lock; +extern struct xarray qib_dev_table; extern struct qib_devdata *qib_lookup(int unit); extern u32 qib_cpulist_count; extern unsigned long *qib_cpulist; diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c index 3117cc5f2a9a..92eeea5679e2 100644 --- a/drivers/infiniband/hw/qib/qib_driver.c +++ b/drivers/infiniband/hw/qib/qib_driver.c @@ -49,8 +49,6 @@ */ const char ib_qib_version[] = QIB_DRIVER_VERSION "\n"; -DEFINE_SPINLOCK(qib_devs_lock); -LIST_HEAD(qib_dev_list); DEFINE_MUTEX(qib_mutex); /* general driver use */ unsigned qib_ibmtu; @@ -96,11 +94,11 @@ int qib_count_active_units(void) { struct qib_devdata *dd; struct qib_pportdata *ppd; - unsigned long flags; + unsigned long index, flags; int pidx, nunits_active = 0; - spin_lock_irqsave(&qib_devs_lock, flags); - list_for_each_entry(dd, &qib_dev_list, list) { + xa_lock_irqsave(&qib_dev_table, flags); + xa_for_each(&qib_dev_table, index, dd) { if (!(dd->flags & QIB_PRESENT) || !dd->kregbase) continue; for (pidx = 0; pidx < dd->num_pports; ++pidx) { @@ -112,7 +110,7 @@ int qib_count_active_units(void) } } } - spin_unlock_irqrestore(&qib_devs_lock, flags); + xa_unlock_irqrestore(&qib_dev_table, flags); return nunits_active; } @@ -125,13 +123,12 @@ int qib_count_units(int *npresentp, int *nupp) { int nunits = 0, npresent = 0, nup = 0; struct qib_devdata *dd; - unsigned long flags; + unsigned long index, flags; int pidx; struct qib_pportdata *ppd; - spin_lock_irqsave(&qib_devs_lock, flags); - - list_for_each_entry(dd, &qib_dev_list, list) { + xa_lock_irqsave(&qib_dev_table, flags); + xa_for_each(&qib_dev_table, index, dd) { nunits++; if ((dd->flags & QIB_PRESENT) && dd->kregbase) npresent++; @@ -142,8 +139,7 @@ int qib_count_units(int *npresentp, int *nupp) nup++; } } - - spin_unlock_irqrestore(&qib_devs_lock, flags); + xa_unlock_irqrestore(&qib_dev_table, flags); if (npresentp) *npresentp = npresent; diff --git a/drivers/infiniband/hw/qib/qib_fs.c b/drivers/infiniband/hw/qib/qib_fs.c index 1d940a2885c9..ceb42d948412 100644 --- a/drivers/infiniband/hw/qib/qib_fs.c +++ b/drivers/infiniband/hw/qib/qib_fs.c @@ -508,8 +508,8 @@ bail: */ static int qibfs_fill_super(struct super_block *sb, void *data, int silent) { - struct qib_devdata *dd, *tmp; - unsigned long flags; + struct qib_devdata *dd; + unsigned long index; int ret; static const struct tree_descr files[] = { @@ -524,18 +524,12 @@ static int qibfs_fill_super(struct super_block *sb, void *data, int silent) goto bail; } - spin_lock_irqsave(&qib_devs_lock, flags); - - list_for_each_entry_safe(dd, tmp, &qib_dev_list, list) { - spin_unlock_irqrestore(&qib_devs_lock, flags); + xa_for_each(&qib_dev_table, index, dd) { ret = add_cntr_files(sb, dd); if (ret) goto bail; - spin_lock_irqsave(&qib_devs_lock, flags); } - spin_unlock_irqrestore(&qib_devs_lock, flags); - bail: return ret; } diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index 17d6b24b3473..5f4aa36e5ca4 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -6140,7 +6140,7 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change) static int setup_txselect(const char *str, const struct kernel_param *kp) { struct qib_devdata *dd; - unsigned long val; + unsigned long index, val; char *n; if (strlen(str) >= ARRAY_SIZE(txselect_list)) { @@ -6156,7 +6156,7 @@ static int setup_txselect(const char *str, const struct kernel_param *kp) } strncpy(txselect_list, str, ARRAY_SIZE(txselect_list) - 1); - list_for_each_entry(dd, &qib_dev_list, list) + xa_for_each(&qib_dev_table, index, dd) if (dd->deviceid == PCI_DEVICE_ID_QLOGIC_IB_7322) set_no_qsfp_atten(dd, 1); return 0; diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c index 9fd69903ca57..d4fd8a6cff7b 100644 --- a/drivers/infiniband/hw/qib/qib_init.c +++ b/drivers/infiniband/hw/qib/qib_init.c @@ -36,7 +36,6 @@ #include <linux/netdevice.h> #include <linux/vmalloc.h> #include <linux/delay.h> -#include <linux/idr.h> #include <linux/module.h> #include <linux/printk.h> #ifdef CONFIG_INFINIBAND_QIB_DCA @@ -95,7 +94,7 @@ MODULE_PARM_DESC(cc_table_size, "Congestion control table entries 0 (CCA disable static void verify_interrupt(struct timer_list *); -static struct idr qib_unit_table; +DEFINE_XARRAY_FLAGS(qib_dev_table, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ); u32 qib_cpulist_count; unsigned long *qib_cpulist; @@ -785,21 +784,9 @@ void __attribute__((weak)) qib_disable_wc(struct qib_devdata *dd) { } -static inline struct qib_devdata *__qib_lookup(int unit) -{ - return idr_find(&qib_unit_table, unit); -} - struct qib_devdata *qib_lookup(int unit) { - struct qib_devdata *dd; - unsigned long flags; - - spin_lock_irqsave(&qib_devs_lock, flags); - dd = __qib_lookup(unit); - spin_unlock_irqrestore(&qib_devs_lock, flags); - - return dd; + return xa_load(&qib_dev_table, unit); } /* @@ -1046,10 +1033,9 @@ void qib_free_devdata(struct qib_devdata *dd) { unsigned long flags; - spin_lock_irqsave(&qib_devs_lock, flags); - idr_remove(&qib_unit_table, dd->unit); - list_del(&dd->list); - spin_unlock_irqrestore(&qib_devs_lock, flags); + xa_lock_irqsave(&qib_dev_table, flags); + __xa_erase(&qib_dev_table, dd->unit); + xa_unlock_irqrestore(&qib_dev_table, flags); #ifdef CONFIG_DEBUG_FS qib_dbg_ibdev_exit(&dd->verbs_dev); @@ -1070,15 +1056,15 @@ u64 qib_int_counter(struct qib_devdata *dd) u64 qib_sps_ints(void) { - unsigned long flags; + unsigned long index, flags; struct qib_devdata *dd; u64 sps_ints = 0; - spin_lock_irqsave(&qib_devs_lock, flags); - list_for_each_entry(dd, &qib_dev_list, list) { + xa_lock_irqsave(&qib_dev_table, flags); + xa_for_each(&qib_dev_table, index, dd) { sps_ints += qib_int_counter(dd); } - spin_unlock_irqrestore(&qib_devs_lock, flags); + xa_unlock_irqrestore(&qib_dev_table, flags); return sps_ints; } @@ -1087,12 +1073,9 @@ u64 qib_sps_ints(void) * 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. */ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra) { - unsigned long flags; struct qib_devdata *dd; int ret, nports; @@ -1103,20 +1086,8 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra) if (!dd) return ERR_PTR(-ENOMEM); - INIT_LIST_HEAD(&dd->list); - - idr_preload(GFP_KERNEL); - spin_lock_irqsave(&qib_devs_lock, flags); - - ret = idr_alloc(&qib_unit_table, dd, 0, 0, GFP_NOWAIT); - if (ret >= 0) { - dd->unit = ret; - list_add(&dd->list, &qib_dev_list); - } - - spin_unlock_irqrestore(&qib_devs_lock, flags); - idr_preload_end(); - + ret = xa_alloc_irq(&qib_dev_table, &dd->unit, dd, xa_limit_32b, + GFP_KERNEL); if (ret < 0) { qib_early_err(&pdev->dev, "Could not allocate unit ID: error %d\n", -ret); @@ -1255,8 +1226,6 @@ static int __init qib_ib_init(void) * These must be called before the driver is registered with * the PCI subsystem. */ - idr_init(&qib_unit_table); - #ifdef CONFIG_INFINIBAND_QIB_DCA dca_register_notify(&dca_notifier); #endif @@ -1281,7 +1250,6 @@ bail_dev: #ifdef CONFIG_DEBUG_FS qib_dbg_exit(); #endif - idr_destroy(&qib_unit_table); qib_dev_cleanup(); bail: return ret; @@ -1313,7 +1281,7 @@ static void __exit qib_ib_cleanup(void) qib_cpulist_count = 0; kfree(qib_cpulist); - idr_destroy(&qib_unit_table); + WARN_ON(!xa_empty(&qib_dev_table)); qib_dev_cleanup(); } |